Re: lsdasd is gone?

[Martha McConaghy]

Thanks, Dan.  That did the trick.  It was always part of the base on RHEL 7 and 
RHEL 8, so didn't know where it lived.  So, when IBM bought RHEL, they dropped 
the s390 package...huh   

Oh, and my colleague used ChatGBT to find the answer.  I prefer this...our 
"chat-sysadmins"

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Dan Horák 

Sent: Wednesday, May 10, 2023 5:14 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: lsdasd is gone?

On Wed, 10 May 2023 21:01:02 +0000
Martha McConaghy  wrote:

> I have just started working with RHEL 9 on z, only building my 2nd server.  I 
> went to add another ECKD DASD to the system and, to my shock, lsdasd doesn't 
> seem to be there.  The dasdfmt and fdasd commands are still there, but no 
> lsdasd.  I went through the Rhel 9 install guide on redhat.com and there is 
> no mention of it in the section on adding DASD to the system.  Anyone know 
> more about this?  It was a hugely helpful tool, why would they get rid of it. 
>  (I tried googling and didn't find any mention of it being retired.)
>
> Is there a package I can install to get it back?

a manually tuned minimal installation might omit the s390utils-base
package, where lsdasd lives, but a default install should include it,
so please try "dnf install s390utils-base"


Dan

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Re: lsdasd is gone?

[Martha McConaghy]

Yup, definitely not in the base, at least for 9.1.

[root@lxrhpth9 ~]# rpm -qil s390-tools
package s390-tools is not installed


Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Marcy Cortes 

Sent: Wednesday, May 10, 2023 5:07 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: lsdasd is gone?

It's part of the s390-tools package on SLES 15 so you'd think it'd be on RH9 as 
well.

Try rpm -qil s390-tools | grep lsdasd

On SLES it is in /sbin so if you aren't root, you'd need the full path



-Original Message-
From: Linux on 390 Port  On Behalf Of Martha McConaghy
Sent: Wednesday, May 10, 2023 2:01 PM
To: LINUX-390@VM.MARIST.EDU
Subject: [LINUX-390] lsdasd is gone?

I have just started working with RHEL 9 on z, only building my 2nd server.  I 
went to add another ECKD DASD to the system and, to my shock, lsdasd doesn't 
seem to be there.  The dasdfmt and fdasd commands are still there, but no 
lsdasd.  I went through the Rhel 9 install guide on redhat.com and there is no 
mention of it in the section on adding DASD to the system.  Anyone know more 
about this?  It was a hugely helpful tool, why would they get rid of it.  (I 
tried googling and didn't find any mention of it being retired.)

Is there a package I can install to get it back?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


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lsdasd is gone?

[Martha McConaghy]

I have just started working with RHEL 9 on z, only building my 2nd server.  I 
went to add another ECKD DASD to the system and, to my shock, lsdasd doesn't 
seem to be there.  The dasdfmt and fdasd commands are still there, but no 
lsdasd.  I went through the Rhel 9 install guide on redhat.com and there is no 
mention of it in the section on adding DASD to the system.  Anyone know more 
about this?  It was a hugely helpful tool, why would they get rid of it.  (I 
tried googling and didn't find any mention of it being retired.)

Is there a package I can install to get it back?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


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Re: Taking some time

[Martha McConaghy]

Mark,
You were one of my first friends in the Linux world and have always been a huge 
help to me over the years.  Your "Linux for Mainframers" presentations did a 
great deal to help many of us make the transition, to live in both the z/VM and 
the Linux world.  Thank you so much for everything you have done to support our 
community and me, personally.

I wish you all the best in the next phase and hope that you won't be a stranger.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Mark Post 

Sent: Wednesday, February 15, 2023 10:55 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Taking some time

All,

I'm retiring from SUSE. Today is my last day on the job. I intend to
stay involved with Linux on the mainframe, including this mailing list,
but I'm not sure just how involved. I'll know better after I've had some
time to adjust to my new life.

When I left EDS in 2007, the environment at the company had become very
toxic, with layoffs every quarter of good people with decades of
experience. Joining Novell/SUSE at that time was the best possible thing
that could have happened to me professionally. It's been very satisfying
to contribute to the creation of SUSE's products. It has literally been
a dream job for me.

I'm thankful to the many people that have helped me over the years.
Without them, I might never have been able to make working with
mainframe Linux my career for 20+ years.


Mark Post

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Re: Open Mainframe Project will be making a z15 available for all Open Source projects

[Martha McConaghy]

Actually, Mark, some z/OS resources have been provided over the last few years. 
 It was just not widely advertised.  The Zowe project has been using a z13 at 
Marist for several years.   Node.js and OpenJDK projects as well.   On the 
Linux side, the LinuxOne Community Cloud regularly supports over 1500 servers 
for short term work.  There is also a private cloud that supports ISVs who 
establish a relationship with IBM.  That one has over 200 instances.  Then, 
there are the systems that I have provided to the Linux Foundation projects for 
many years.  That continues to be very active.

I'm not involved with the new machine so I don't know exactly what is being 
planned for it.  Just wanted to point out that there have been resources for a 
long time and they are going to continue, in case there was any confusion.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Mark Post 

Sent: Thursday, September 22, 2022 3:05 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Open Mainframe Project will be making a z15 available for all Open 
Source projects

Cross-posted to Linux-390, IBMVM, and IBM-Main

At the Linux Foundation's Open Mainframe Project meeting this week, it
was announced that beginning in 2023, the OMP will have a z15 available
for any Open Source project that wants to make use of it. According to
the announcement at
https://www.openmainframeproject.org/press/2022/09/21/open-mainframe-announces-new-mainframe
"...this mainframe infrastructure will be available for broad open
source projects as a development, test, and continuous delivery
environment, enabling developers within these communities to be able to
support both z/OS and Linux on s390x."

The z15 will be hosted at Marist College, adding to their already
good-sized menagerie of IBM Z hardware. The hardware is being donated by
Broadcom Mainframe Software Division.

While we've had similar resources available for Linux-based OSS projects
for some time, this is the first that I'm aware of the availability of
no-cost access to IBM Z hardware for z/OS-based Open Source developers.
It will be interesting to see if any more z/OS-based OSS projects come
along to make use of this.


Mark Post

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Re: Moving LUNs using z/VM

[Martha McConaghy]

Just an update - I was able to move the 5 servers and their SAN LUNs over to 
the DS8910 using the EDEV trick.   Thanks for the tip!

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Barlow 

Sent: Tuesday, April 5, 2022 7:30 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

I moved LUNs from a DS8880 in CA to a new DS8910 in OH. I defined EDEVs on
both ends and used PIPEDDR  to send it across TCPIP  most of the way across
the country. I can probably share more details if you need them. a 4G LUN
took about 10 minutes depending on how much real data was there. I even
moved a 400G LUN.

Rick Barlow
Velocity Software, Inc

On Tue, Apr 5, 2022 at 5:47 PM Martha McConaghy 
wrote:

> That's also a good idea.  Thanks, Dave, Alan and Rick!  I think, while I'm
> at it, I could DDR them to file images so I have a back up too.
>
> Martha
>
>
> Martha McConaghy
>
> Marist:  System Architect/Technical Lead
>
> SHARE Association:  Secretary
>
> Marist College IT
>
> Poughkeepsie, NY 12601
>
> 
> From: Linux on 390 Port  on behalf of David
> Kreuter 
> Sent: Tuesday, April 5, 2022 5:41 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> Hi Martha
> I did this successfully some years back. Make the input a “full pack “
> mini on edev link it read only to reduce stress.
> Good luck
> Dave
> 
> From: Linux on 390 Port  on behalf of Martha
> McConaghy 
> Sent: Tuesday, April 5, 2022 5:34:22 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> OK, I want to make sure I am understanding it clearly.  Its an interesting
> idea, but I really can't afford to blow away the original disks, so want to
> be really sure.
>
> The existing disks are used by the virtual machine by having LOADDEV
> statements in the directory for the vm and then IPLing the raddr of the
> NPIV port on the FC channel, i.e.:
>
> LOADDEV PORT 500507630628D700
> LOADDEV LUN 40014009
> IPL 2000
>
> Now, the idea is to define an EDEV to VM that points to the same LUN, as
> well as one that points to the new LUN on the DS8910.  Attach both edev
> devices to my machine and then use DDR to copy from the old one to the new
> one.  Very interesting idea.  As long as I don't try to write to the
> original LUN, define a minidisk on it, etc, it should be OK, in theory.
> Has anyone ever tried this?
>
> Martha
>
>
> Martha McConaghy
>
> Marist:  System Architect/Technical Lead
>
> SHARE Association:  Secretary
>
> Marist College IT
>
> Poughkeepsie, NY 12601
>
> 
> From: Linux on 390 Port  on behalf of Rick Troth
> 
> Sent: Tuesday, April 5, 2022 5:27 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> What I mean is:
> define them even temporarily as EDEVs for the DDR and go for it.
>
>
>
> On Tue, Apr 5, 2022, 17:25 Rick Troth  wrote:
>
> > If they're defined as EDEVs then you can use DDR.
> >
> > FBA (EDEV or 3370, etc al) being fixed block, copying the whole disk will
> > include the boot partition. (Partition tables are not really needed on
> > fixed block disks, even laptop SSDs, but don't get me started.) Any
> > "partition table", and all partitions, would be included in the DDR copy.
> >
> >
> >
> > On Tue, Apr 5, 2022, 17:19 Martha McConaghy  >
> > wrote:
> >
> >> I have a few RHEL servers that run on z/VM but boot off of a direct
> >> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870
> and I
> >> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a
> way
> >> that I could use VM to copy these LUNs to the new storage?   I was
> looking
> >> at DDR, but wasn't sure if the FB-512 type would work for these.  They
> >> aren't CMS format disks, obviously, so that isn't an option.  I'm
> trying to
> >> avoid having to attach them to a Linux server to do the work, but will
> if
> >> that is the only option.  Since these are boot volumes, I have to copy
> the
> >> boot partition and boot record, not just the filesystems.  So, a
> physical
> >> copy would be the best.
> >>
> >> Any ideas?
> >>
> >> Martha
> >>
> >>
> >> Martha McConaghy
> >>
> >> Marist:  System Architect/Technical Lead
> >>
> >> SHARE Association:  Secretary
> >>

Re: Moving LUNs using z/VM

[Martha McConaghy]

Certainly makes it easy for us to remember.  

Thanks, I will check it out.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Troth 

Sent: Wednesday, April 6, 2022 11:48 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

Use 'dd' to copy block device to block device. (The name reminds me of DDR
every time I use it!)




On Wed, Apr 6, 2022, 11:44 Martha McConaghy 
wrote:

> Christian,
> Looks like I have a couple of Linux LPARs that I'm going to have to move
> to the new storage too.  (I was hoping to be able to retire them, but no
> such luck.)  The trick with the EDEV isn't going to work for them (LUNs are
> too big).
>
> What would be a good tool to use in Linux to do physical copies of LUNs?
> My colleagues usually only deal with copying filesystems, like rsync, which
> would not do the trick for me.
>
> Martha
>
>
> Martha McConaghy
>
> Marist:  System Architect/Technical Lead
>
> SHARE Association:  Secretary
>
> Marist College IT
>
> Poughkeepsie, NY 12601
>
> 
> From: Linux on 390 Port  on behalf of Christian
> Borntraeger 
> Sent: Wednesday, April 6, 2022 1:56 AM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> Am 05.04.22 um 23:19 schrieb Martha McConaghy:
> > I have a few RHEL servers that run on z/VM but boot off of a direct
> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I
> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way
> that I could use VM to copy these LUNs to the new storage?   I was looking
> at DDR, but wasn't sure if the FB-512 type would work for these.  They
> aren't CMS format disks, obviously, so that isn't an option.  I'm trying to
> avoid having to attach them to a Linux server to do the work, but will if
> that is the only option.  Since these are boot volumes, I have to copy the
> boot partition and boot record, not just the filesystems.  So, a physical
> copy would be the best.
>
> I think your last resort (using a Linux server) is actually  not a bad
> idea as direct attached FCP is usually faster than EDEV.
>
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>
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Re: Moving LUNs using z/VM

[Martha McConaghy]

Christian,
Looks like I have a couple of Linux LPARs that I'm going to have to move to the 
new storage too.  (I was hoping to be able to retire them, but no such luck.)  
The trick with the EDEV isn't going to work for them (LUNs are too big).

What would be a good tool to use in Linux to do physical copies of LUNs?  My 
colleagues usually only deal with copying filesystems, like rsync, which would 
not do the trick for me.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Christian 
Borntraeger 
Sent: Wednesday, April 6, 2022 1:56 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

Am 05.04.22 um 23:19 schrieb Martha McConaghy:
> I have a few RHEL servers that run on z/VM but boot off of a direct attached 
> SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I need to 
> move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way that I 
> could use VM to copy these LUNs to the new storage?   I was looking at DDR, 
> but wasn't sure if the FB-512 type would work for these.  They aren't CMS 
> format disks, obviously, so that isn't an option.  I'm trying to avoid having 
> to attach them to a Linux server to do the work, but will if that is the only 
> option.  Since these are boot volumes, I have to copy the boot partition and 
> boot record, not just the filesystems.  So, a physical copy would be the best.

I think your last resort (using a Linux server) is actually  not a bad idea as 
direct attached FCP is usually faster than EDEV.

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Re: Moving LUNs using z/VM

[Martha McConaghy]

Thanks, Rick.  That is very cool.  I don't think I'll need PIPEDDR right now, 
since it will be pretty easy for me to have both EDEVs on the same VM system.  
But that is a good trick to keep in mind.  Luckily, none of these LUNs are very 
big, only 120G each.  (Gosh, I remember when I would have thought that was 
huge.)

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Barlow 

Sent: Tuesday, April 5, 2022 7:30 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

I moved LUNs from a DS8880 in CA to a new DS8910 in OH. I defined EDEVs on
both ends and used PIPEDDR  to send it across TCPIP  most of the way across
the country. I can probably share more details if you need them. a 4G LUN
took about 10 minutes depending on how much real data was there. I even
moved a 400G LUN.

Rick Barlow
Velocity Software, Inc

On Tue, Apr 5, 2022 at 5:47 PM Martha McConaghy 
wrote:

> That's also a good idea.  Thanks, Dave, Alan and Rick!  I think, while I'm
> at it, I could DDR them to file images so I have a back up too.
>
> Martha
>
>
> Martha McConaghy
>
> Marist:  System Architect/Technical Lead
>
> SHARE Association:  Secretary
>
> Marist College IT
>
> Poughkeepsie, NY 12601
>
> 
> From: Linux on 390 Port  on behalf of David
> Kreuter 
> Sent: Tuesday, April 5, 2022 5:41 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> Hi Martha
> I did this successfully some years back. Make the input a “full pack “
> mini on edev link it read only to reduce stress.
> Good luck
> Dave
> 
> From: Linux on 390 Port  on behalf of Martha
> McConaghy 
> Sent: Tuesday, April 5, 2022 5:34:22 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> OK, I want to make sure I am understanding it clearly.  Its an interesting
> idea, but I really can't afford to blow away the original disks, so want to
> be really sure.
>
> The existing disks are used by the virtual machine by having LOADDEV
> statements in the directory for the vm and then IPLing the raddr of the
> NPIV port on the FC channel, i.e.:
>
> LOADDEV PORT 500507630628D700
> LOADDEV LUN 40014009
> IPL 2000
>
> Now, the idea is to define an EDEV to VM that points to the same LUN, as
> well as one that points to the new LUN on the DS8910.  Attach both edev
> devices to my machine and then use DDR to copy from the old one to the new
> one.  Very interesting idea.  As long as I don't try to write to the
> original LUN, define a minidisk on it, etc, it should be OK, in theory.
> Has anyone ever tried this?
>
> Martha
>
>
> Martha McConaghy
>
> Marist:  System Architect/Technical Lead
>
> SHARE Association:  Secretary
>
> Marist College IT
>
> Poughkeepsie, NY 12601
>
> 
> From: Linux on 390 Port  on behalf of Rick Troth
> 
> Sent: Tuesday, April 5, 2022 5:27 PM
> To: LINUX-390@VM.MARIST.EDU 
> Subject: Re: Moving LUNs using z/VM
>
> What I mean is:
> define them even temporarily as EDEVs for the DDR and go for it.
>
>
>
> On Tue, Apr 5, 2022, 17:25 Rick Troth  wrote:
>
> > If they're defined as EDEVs then you can use DDR.
> >
> > FBA (EDEV or 3370, etc al) being fixed block, copying the whole disk will
> > include the boot partition. (Partition tables are not really needed on
> > fixed block disks, even laptop SSDs, but don't get me started.) Any
> > "partition table", and all partitions, would be included in the DDR copy.
> >
> >
> >
> > On Tue, Apr 5, 2022, 17:19 Martha McConaghy  >
> > wrote:
> >
> >> I have a few RHEL servers that run on z/VM but boot off of a direct
> >> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870
> and I
> >> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a
> way
> >> that I could use VM to copy these LUNs to the new storage?   I was
> looking
> >> at DDR, but wasn't sure if the FB-512 type would work for these.  They
> >> aren't CMS format disks, obviously, so that isn't an option.  I'm
> trying to
> >> avoid having to attach them to a Linux server to do the work, but will
> if
> >> that is the only option.  Since these are boot volumes, I have to copy
> the
> >> boot partition and boot record, not just the filesystems.  So, a
> physical
> >> copy would be the best.
> >>
> >> Any ideas?
> >>
> >> Martha
> >

Re: Moving LUNs using z/VM

[Martha McConaghy]

I have not been able to define an EDEV larger than 1TB without getting errors.  
However, I have not tired it with z/VM 7.2 yet.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Neale Ferguson 

Sent: Tuesday, April 5, 2022 6:01 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

Is there a maximum edev size?



You can copy the LUNs with DDR, but you have to first define an EDEVICE for 
them.

Regards,
Alan

Alan Altmark
Senior Managing z/VM Consultant
IBM Systems Lab Services
1 607 321 7556 Mobile
alan_altm...@us.ibm.com

> -Original Message-
> From: Linux on 390 Port  On Behalf Of
> Martha McConaghy
> Sent: Tuesday, April 5, 2022 5:20 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: [EXTERNAL] [LINUX-390] Moving LUNs using z/VM
>
> I have a few RHEL servers that run on z/VM but boot off of a direct attached
> SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I need to
> move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way that I
> could use VM to copy these LUNs to the new storage?   I was looking at DDR,
> but wasn't sure if the FB-512 type would work for these.  They aren't CMS
> format disks, obviously, so that isn't an option.  I'm trying to avoid having 
> to
> attach them to a Linux server to do the work, but will if that is the only
> option.  Since these are boot volumes, I have to copy the boot partition and
> boot record, not just the filesystems.  So, a physical copy would be the best.
>
> Any ideas?

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Re: Moving LUNs using z/VM

[Martha McConaghy]

That's also a good idea.  Thanks, Dave, Alan and Rick!  I think, while I'm at 
it, I could DDR them to file images so I have a back up too.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of David Kreuter 

Sent: Tuesday, April 5, 2022 5:41 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

Hi Martha
I did this successfully some years back. Make the input a “full pack “ mini on 
edev link it read only to reduce stress.
Good luck
Dave

From: Linux on 390 Port  on behalf of Martha McConaghy 

Sent: Tuesday, April 5, 2022 5:34:22 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

OK, I want to make sure I am understanding it clearly.  Its an interesting 
idea, but I really can't afford to blow away the original disks, so want to be 
really sure.

The existing disks are used by the virtual machine by having LOADDEV statements 
in the directory for the vm and then IPLing the raddr of the NPIV port on the 
FC channel, i.e.:

LOADDEV PORT 500507630628D700
LOADDEV LUN 40014009
IPL 2000

Now, the idea is to define an EDEV to VM that points to the same LUN, as well 
as one that points to the new LUN on the DS8910.  Attach both edev devices to 
my machine and then use DDR to copy from the old one to the new one.  Very 
interesting idea.  As long as I don't try to write to the original LUN, define 
a minidisk on it, etc, it should be OK, in theory.  Has anyone ever tried this?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Troth 

Sent: Tuesday, April 5, 2022 5:27 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

What I mean is:
define them even temporarily as EDEVs for the DDR and go for it.



On Tue, Apr 5, 2022, 17:25 Rick Troth  wrote:

> If they're defined as EDEVs then you can use DDR.
>
> FBA (EDEV or 3370, etc al) being fixed block, copying the whole disk will
> include the boot partition. (Partition tables are not really needed on
> fixed block disks, even laptop SSDs, but don't get me started.) Any
> "partition table", and all partitions, would be included in the DDR copy.
>
>
>
> On Tue, Apr 5, 2022, 17:19 Martha McConaghy 
> wrote:
>
>> I have a few RHEL servers that run on z/VM but boot off of a direct
>> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I
>> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way
>> that I could use VM to copy these LUNs to the new storage?   I was looking
>> at DDR, but wasn't sure if the FB-512 type would work for these.  They
>> aren't CMS format disks, obviously, so that isn't an option.  I'm trying to
>> avoid having to attach them to a Linux server to do the work, but will if
>> that is the only option.  Since these are boot volumes, I have to copy the
>> boot partition and boot record, not just the filesystems.  So, a physical
>> copy would be the best.
>>
>> Any ideas?
>>
>> Martha
>>
>>
>> Martha McConaghy
>>
>> Marist:  System Architect/Technical Lead
>>
>> SHARE Association:  Secretary
>>
>> Marist College IT
>>
>> Poughkeepsie, NY 12601
>>
>>
>> --
>> For LINUX-390 subscribe / signoff / archive access instructions,
>> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
>> visit
>> http://www2.marist.edu/htbin/wlvindex?LINUX-390
>>
>

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Re: Moving LUNs using z/VM

[Martha McConaghy]

OK, I want to make sure I am understanding it clearly.  Its an interesting 
idea, but I really can't afford to blow away the original disks, so want to be 
really sure.

The existing disks are used by the virtual machine by having LOADDEV statements 
in the directory for the vm and then IPLing the raddr of the NPIV port on the 
FC channel, i.e.:

LOADDEV PORT 500507630628D700
LOADDEV LUN 40014009
IPL 2000

Now, the idea is to define an EDEV to VM that points to the same LUN, as well 
as one that points to the new LUN on the DS8910.  Attach both edev devices to 
my machine and then use DDR to copy from the old one to the new one.  Very 
interesting idea.  As long as I don't try to write to the original LUN, define 
a minidisk on it, etc, it should be OK, in theory.  Has anyone ever tried this?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Rick Troth 

Sent: Tuesday, April 5, 2022 5:27 PM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Moving LUNs using z/VM

What I mean is:
define them even temporarily as EDEVs for the DDR and go for it.



On Tue, Apr 5, 2022, 17:25 Rick Troth  wrote:

> If they're defined as EDEVs then you can use DDR.
>
> FBA (EDEV or 3370, etc al) being fixed block, copying the whole disk will
> include the boot partition. (Partition tables are not really needed on
> fixed block disks, even laptop SSDs, but don't get me started.) Any
> "partition table", and all partitions, would be included in the DDR copy.
>
>
>
> On Tue, Apr 5, 2022, 17:19 Martha McConaghy 
> wrote:
>
>> I have a few RHEL servers that run on z/VM but boot off of a direct
>> attached SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I
>> need to move them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way
>> that I could use VM to copy these LUNs to the new storage?   I was looking
>> at DDR, but wasn't sure if the FB-512 type would work for these.  They
>> aren't CMS format disks, obviously, so that isn't an option.  I'm trying to
>> avoid having to attach them to a Linux server to do the work, but will if
>> that is the only option.  Since these are boot volumes, I have to copy the
>> boot partition and boot record, not just the filesystems.  So, a physical
>> copy would be the best.
>>
>> Any ideas?
>>
>> Martha
>>
>>
>> Martha McConaghy
>>
>> Marist:  System Architect/Technical Lead
>>
>> SHARE Association:  Secretary
>>
>> Marist College IT
>>
>> Poughkeepsie, NY 12601
>>
>>
>> --
>> For LINUX-390 subscribe / signoff / archive access instructions,
>> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
>> visit
>> http://www2.marist.edu/htbin/wlvindex?LINUX-390
>>
>

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Moving LUNs using z/VM

[Martha McConaghy]

I have a few RHEL servers that run on z/VM but boot off of a direct attached 
SAN LUN (not an EDEV or ECKD).  They reside on an old DS8870 and I need to move 
them to a new DS8910.  (No PPRC, GDPS, etc.)  Is there a way that I could use 
VM to copy these LUNs to the new storage?   I was looking at DDR, but wasn't 
sure if the FB-512 type would work for these.  They aren't CMS format disks, 
obviously, so that isn't an option.  I'm trying to avoid having to attach them 
to a Linux server to do the work, but will if that is the only option.  Since 
these are boot volumes, I have to copy the boot partition and boot record, not 
just the filesystems.  So, a physical copy would be the best.

Any ideas?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Secretary

Marist College IT

Poughkeepsie, NY 12601


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Re: z15 on-board compression

[Martha McConaghy]

Bill,
Is this issue specific to WAS then?   What about other Java implementations 
such as TomCat?  Would they see the same problem?

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Bill Bitner 

Sent: Wednesday, July 22, 2020 7:55 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: z15 on-board compression


Thanks Andreas,
The problem is there is a bug in WAS when DFLTCC is used -
Assessment by Java Development is that Wells Fargo's symptoms line up to be
the same issue as experienced by another client  several days earlier. In
the first client's case, they were provided with an WAS Ifix (APAR PH27505)
which prevents the endless looping that occurs when the JVM API does not
report that the compressed data stream has reached the end. The client
tested the WAS iFix and confirmed that it does prevent the endless looping
during decompression. The current recommendation is for z15 zLinux clients
running JAVA8 SR6 is to apply WAS APAR PH27505 and run with HW compression
disabled (DFLTCC=0).

Wells Fargo has 2000 Linux guests they would have to patch to fix and were
looking for an easy way to just disable.

Regards,
Bill
___

Bill Bitner - z/VM Client Focus and Care - 607-429-3286
bitn...@us.ibm.com
"Making systems practical and profitable for customers through
virtualization and its exploitation." - z/VM



From:   Andreas Krebbel 
To: LINUX-390@VM.MARIST.EDU
Date:   07/22/2020 07:49 AM
Subject:[EXTERNAL] Re: z15 on-board compression
Sent by:Linux on 390 Port 



Hi,

I wrote a post about how to build and test zlib also for distros currently
not supported:

https://urldefense.proofpoint.com/v2/url?u=http-3A__linux-2Don-2Dz.blogspot.com_2019_10_howto-2Dexploiting-2Dhardware-2Dcompression.html=DwICaQ=jf_iaSHvJObTbx-siA1ZOg=5MoiGnRMsqjUxHq7C7RX4kthfAKqf40IRGxojgucrwA=x1vmZzvvtIGmEi8_Y7og3XDpzRz1wa5VLMnZ-0HDnMA=uQF9dwXC8luEMIVM-xxLnLikZ8q2yREoz_7unCt3O30=


You will find a quick one-liner test at the end of the post which can be
used to verify whether
hardware compression works in your installation.

Andreas

On 10.06.20 01:36, Michael MacIsaac wrote:
> Hello list,
>
> I heard about the new DFLTCC instruction on the z15, aka on board
> compression.  I tried a quick experiment to see the difference from a
z14.
> Disclaimer: I am not a performance expert.>
> Here are three commands to create, compress and decompress a 1G file on a
> z14:
>
> # grep Type: /proc/sysinfo
> Type: 3906
>
> # time dd if=/dev/zero of=1G.file bs=1G count=1
> 1+0 records in
> 1+0 records out
> 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 21.93 s, 49.0 MB/s
>
> real0m22.047s
> user0m0.001s
> sys 0m3.669s
>
> # time cat 1G.file | gzip -c > 1G.compressed.file
>
> real0m7.603s
> user0m5.362s
> sys 0m0.789s
>
> # time cat 1G.compressed.file | gzip -d > 1G.file
>
> real0m24.833s
> user0m4.103s
> sys 0m1.845s
>
> Here's the same commands on z15:
>
> # grep Type: /proc/sysinfo
> Type: 8561
>
> # time dd if=/dev/zero of=1G.file bs=1G count=1
> 1+0 records in
> 1+0 records out
> 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.59126 s, 675 MB/s
>
> real0m1.621s
> user0m0.000s
> sys 0m1.216s
>
> # time cat 1G.file | gzip -c > 1G.compressed.file
>
> real0m5.722s
> user0m4.946s
> sys 0m0.510s
> # time cat 1G.compressed.file | gzip -d > 1G.file
>
> real0m6.150s
> user0m3.922s
> sys 0m1.290s
>
> Wow more than 10x faster on dd - was not expecting that as I didn't think
> it uses compression. But the compress with gzip -c, was only 25% faster
on
> the z15 while the decompress was about 4x.
>
> Are these results expected?
>
> Thanks.
>
>
> --
>  -Mike MacIsaac
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
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>
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>

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Re: Multipathing and booting from SAN LUN

[Martha McConaghy]

Thanks, Alan.  Some really interesting ideas.  I had a faint hope that there 
was a "magic" option that I had missed in my reading, that would solve all my 
problems..I know, I can dream can't I?

Of the two issues, I think getting the multipathing working is the more 
important.  That would keep the server up even if there was a single fabric 
failure.  So, I'll concentrate on that first.  For the IPL, I think I'll go the 
simple route.  I'll add in the correct directory records for the 2nd path into 
the server's directory entry, but just comment them out and add a  note "use in 
case of emergency"..  It will require manual intervention to boot the 
server, but at that point, I would want to watch and make sure it works anyway.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Alan Altmark 

Sent: Friday, July 3, 2020 9:07 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Multipathing and booting from SAN LUN

On Thursday, 07/02/2020 at 09:33 GMT, Martha McConaghy
 wrote:
> I've run into something that is a bit beyond my Linux skills at this
point.
> So, I could use some advice.
:
> I don't know what to do with this situation, though, to get full use of
the 2nd
> fabric.  First there is the IPL issue...how can I have an alternate IPL
address
> if 2000 doesn't work?

>  IPL 2000
>  LOADDEV PORT 500507630628D700
>  LOADDEV LUN 40004007?

You'll need automation to start the server and monitor the IPL.  Depending
on what's wrong, you can just use the IPL option on XAUTOLOG to change to
a different local port.  For problems in the SAN, you'll need to XAUTOLOG
with NOIPL and use SEND or FOR to orchestrate the IPL.

One could wish for
IPL vdev1 vdev2
LOADDEV PORT port1
LOADDEV PORT port2
LOADDEV LUN  40004007?

Such that CP would try vdev1+port1, vdev1+port2, vdev2+port1, and finally
vdev2+port2, looking for a successful boot.  I might be tempted to allow
multiple LUNs, too.  SET LOADDEV would allow multiple entries, too.

Alternatively, provide for virtual load profiles:
*
LOADPROFILE 1
IPL vdev1
LOADDEV PORT port1
LOADDEV LUN  40004007?
*
LOADPROFILE 2
IPL vdev2
LOADDEV PORT port2
LOADDEV LUN  40004007?

And CP would try them in numerical order. Possibly allow the profile
number to be specified on XAUTOLOG.  And, ooh, I know!, a new POWERON
command that does what XAUTOLOG SYNCH does, but provides any of the boot
loader or "3-card loader" messages back to the command issuer to assist in
diagnosis.

And maybe look at more symbolics in the directory (user environment
variable references, perhaps).

If I keep typing it will get even more complex and wonderful, so I'll stop
here.  :-)

Alan Altmark

Senior Managing z/VM and Linux Consultant
IBM Systems Lab Services
IBM Z Delivery Practice
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott


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Multipathing and booting from SAN LUN

[Martha McConaghy]

I've run into something that is a bit beyond my Linux skills at this point.  
So, I could use some advice.

I have several RHEL 7 servers running on z/VM that are booting from SAN LUNs, 
not ECKD.  That isn't our normal practice, so it is different for me.  I use 
LOADDEV to define the port and LUN, and dedicate the device addresses to each 
server.  (All are using NPIV addressing and are zoned to a DS8870 on the SAN.)  
Here is what one of the directory entries looks like:

   IPL 2000
   LOADDEV PORT 500507630628D700
   LOADDEV LUN 40004007
   MACHINE ESA 4
   OPTION CHPIDV ONE
   DEDICATE 2000 5000
   DEDICATE 3000 6000

This works fine, the servers come up, everything is happy.  But, I noticed that 
only 1 path is used.  (We have 2 SAN fabrics for redundancy.)  Right now, each 
server is dependent on path 1 being available in order to boot.  Once up, they 
only use path 1, and would have a problem if that fabric went down.

Our usual build for Marist uses ECKD for the operating system, so this isn't an 
issue.  Multipath drivers are used to talk to SAN based LUNs, so we can use 
both fabrics for redundancy.

I don't know what to do with this situation, though, to get full use of the 2nd 
fabric.  First there is the IPL issue...how can I have an alternate IPL address 
if 2000 doesn't work?  Then, there is the issue of Linux once it boots...not 
sure how to get multipath drivers introduced after the boot process is already 
done.  The LUN contains the operating system as well as data.

Any ideas or suggestions?  These servers are not "production" yet, but will be 
eventually.  I'd like to be able to get them fixed before that happens.

Martha



Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601

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Re: Adding disk to root LVM with RHEL 7

[Martha McConaghy]

Thanks, Jan.  You identified the problem.  I failed to put the disk in 
/etc/zipl.conf before doing zipl.  A colleague and I managed to stumble onto 
that after some struggle last night.  I didn't see your email until this 
morning, but the link is just what I needed.  It looks familiar, I bet I have 
read it before, but had just forgotten about it.  I don't work with RHEL that 
often.  You can bet it is bookmarked now.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Jan Stodola 

Sent: Thursday, April 16, 2020 3:36 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Adding disk to root LVM with RHEL 7

On Wed, Apr 15, 2020 at 10:29 PM Martha McConaghy <
martha.mccona...@marist.edu> wrote:

> I feel like Alice through the looking glass at this point.  I was hopeful
> that mkinitrd would do the trick, but now I have a whole new problem.
> After bringing the disk online, adding it to /etc/dasd.conf, I ran mkinitrd
> and zipl.  Then, I rebooted.  I did NOT touch the LVM, or anything, at that
> point.  This resulted in a bunch of dracut timeout errors and am now in
> dracut emergency mode.  I'm about to give up and just give this darned
> thing a TB LUN and be done with it.  But, this shouldn't be so hard for
> crying out loud.  Its bugging me that I don't know what I'm doing wrong.
> The RedHat web site lets me log in, but won't show me their solution
> pagesarggg.
>

Hi Martha,
check the steps in the RHEL-7 documentation, there is no need to log in:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/installation_guide/chap-post-installation-configuration-s390#sect-post-installation-adding-dasds-s390
You should not need to re-create initrd if you specify the new DASD device
ID on the kernel command line.


>
> So, any thoughts?
>
> Martha
>
> Pre-reboot:
>
> [root@opncl42 ~]# cio_ignore -l
> Ignored devices:
> =
> [root@opncl42 ~]# chccwdev --online 0.0.0200
> Setting device 0.0.0200 online
> Done
> [root@opncl42 ~]# lsdasd
> Bus-ID Status  Name  Device  Type  BlkSz  Size  Blocks
>
> ==
> 0.0.0150   active  dasda 94:0ECKD  4096   46068MB   11793420
> 0.0.0200   active  dasdb 94:4ECKD  4096   23033MB   5896620
> [root@opncl42 ~]# vi /etc/dasd.conf
> [root@opncl42 ~]#  mkinitrd -f /boot/initramfs-3.10.0-1127.el7.s390x.img
> 3.10.0-1127.el7.s390x
> [root@opncl42 ~]# zipl
> Using config file '/etc/zipl.conf'
> Building bootmap in '/boot'
> Building menu 'zipl-automatic-menu'
> Adding #1: IPL section '3.10.0-1127.el7.s390x' (default)
> Adding #2: IPL section '3.10.0-1127.el7.s390x_with_debugging'
> Adding #3: IPL section 'linux'
> Preparing boot device: dasda (0150).
> Done.
> [root@opncl42 ~]# reboot
>
> Post-reboot:
>
> Ý"Ý32m  OK  "Ý0m+ Reached target System Initialization.
> Ý1.149462+ dasd-eckd 0.0.0150: A channel path to the device has become
> opera
> tional
> Ý1.151741+ dasd-eckd 0.0.0150: New DASD 3390/0C (CU 3990/01) with
> 65519 cyli
> nders, 15 heads, 224 sectors
> Ý1.153040+ dasd-eckd 0.0.0150: DASD with 4 KB/block, 47173680 KB total
> size,
>  48 KB/track, linux disk layout
> Ý1.153145+ qeth: register layer 2 discipline
>
> Ý1.154257+ qdio: 0.0.0702 OSA on SC 5 using AI:1 QEBSM:0 PRI:1 TDD:1
> SIGA:RW
>  A
> Ý1.155122+  dasda:VOL1/  0X0150: dasda1 dasda2
> Ý1.156584+ dasd-eckd 0.0.0200: A channel path to the device has become
> opera
> tional
> Ý1.159045+ dasd-eckd 0.0.0200: New DASD 3390/0C (CU 3990/01) with
> 32759 cyli
> nders, 15 heads, 224 sectors
> Ý1.159581+ dasd-eckd 0.0.0200: DASD with 4 KB/block, 23586480 KB total
> size,
>  48 KB/track, compatible disk layout
> Ý1.160634+  dasdb:VOL1/  0X0200: dasdb1
> Ý"Ý32m  OK  "Ý0m+ Started Show Plymouth Boot Screen.""
> Ý"Ý32m  OK  "Ý0m+ Reached target Paths.""
> Ý"Ý32m  OK  "Ý0m+ Started Forward Password Requests to Plymouth Directory
> Watch.
> ""
> Ý"Ý32m  OK  "Ý0m+ Reached target Basic System.""
> Ý1.169428+ netif_napi_add() called with weight 128 on device eth%d
> Ý1.169600+ qeth 0.0.0700: MAC address 02:01:42:00:00:08 successfully
> registered on device eth0
> Ý1.169613+ qeth 0.0.0700: Device is a Virtual NIC QDIO card (level:
> V712)
> Ý1.169613+ with link type Virt.NIC QDIO (portname: )
> Ý  124.355856+ dracut-initqueueÝ363+: Warning: dracut-initqueue timeout -
> starting timeout scripts""
> Ý  

Re: Adding disk to root LVM with RHEL 7

[Martha McConaghy]

I feel like Alice through the looking glass at this point.  I was hopeful that 
mkinitrd would do the trick, but now I have a whole new problem.  After 
bringing the disk online, adding it to /etc/dasd.conf, I ran mkinitrd and zipl. 
 Then, I rebooted.  I did NOT touch the LVM, or anything, at that point.  This 
resulted in a bunch of dracut timeout errors and am now in dracut emergency 
mode.  I'm about to give up and just give this darned thing a TB LUN and be 
done with it.  But, this shouldn't be so hard for crying out loud.  Its bugging 
me that I don't know what I'm doing wrong.  The RedHat web site lets me log in, 
but won't show me their solution pagesarggg.

So, any thoughts?

Martha

Pre-reboot:

[root@opncl42 ~]# cio_ignore -l
Ignored devices:
=
[root@opncl42 ~]# chccwdev --online 0.0.0200
Setting device 0.0.0200 online
Done
[root@opncl42 ~]# lsdasd
Bus-ID Status  Name  Device  Type  BlkSz  Size  Blocks
==
0.0.0150   active  dasda 94:0ECKD  4096   46068MB   11793420
0.0.0200   active  dasdb 94:4ECKD  4096   23033MB   5896620
[root@opncl42 ~]# vi /etc/dasd.conf
[root@opncl42 ~]#  mkinitrd -f /boot/initramfs-3.10.0-1127.el7.s390x.img 
3.10.0-1127.el7.s390x
[root@opncl42 ~]# zipl
Using config file '/etc/zipl.conf'
Building bootmap in '/boot'
Building menu 'zipl-automatic-menu'
Adding #1: IPL section '3.10.0-1127.el7.s390x' (default)
Adding #2: IPL section '3.10.0-1127.el7.s390x_with_debugging'
Adding #3: IPL section 'linux'
Preparing boot device: dasda (0150).
Done.
[root@opncl42 ~]# reboot

Post-reboot:

Ý"Ý32m  OK  "Ý0m+ Reached target System Initialization.
Ý1.149462+ dasd-eckd 0.0.0150: A channel path to the device has become opera
tional
Ý1.151741+ dasd-eckd 0.0.0150: New DASD 3390/0C (CU 3990/01) with 65519 cyli
nders, 15 heads, 224 sectors
Ý1.153040+ dasd-eckd 0.0.0150: DASD with 4 KB/block, 47173680 KB total size,
 48 KB/track, linux disk layout
Ý1.153145+ qeth: register layer 2 discipline

Ý1.154257+ qdio: 0.0.0702 OSA on SC 5 using AI:1 QEBSM:0 PRI:1 TDD:1 SIGA:RW
 A
Ý1.155122+  dasda:VOL1/  0X0150: dasda1 dasda2
Ý1.156584+ dasd-eckd 0.0.0200: A channel path to the device has become opera
tional
Ý1.159045+ dasd-eckd 0.0.0200: New DASD 3390/0C (CU 3990/01) with 32759 cyli
nders, 15 heads, 224 sectors
Ý1.159581+ dasd-eckd 0.0.0200: DASD with 4 KB/block, 23586480 KB total size,
 48 KB/track, compatible disk layout
Ý1.160634+  dasdb:VOL1/  0X0200: dasdb1
Ý"Ý32m  OK  "Ý0m+ Started Show Plymouth Boot Screen.""
Ý"Ý32m  OK  "Ý0m+ Reached target Paths.""
Ý"Ý32m  OK  "Ý0m+ Started Forward Password Requests to Plymouth Directory Watch.
""
Ý"Ý32m  OK  "Ý0m+ Reached target Basic System.""
Ý1.169428+ netif_napi_add() called with weight 128 on device eth%d
Ý1.169600+ qeth 0.0.0700: MAC address 02:01:42:00:00:08 successfully 
registered on device eth0
Ý1.169613+ qeth 0.0.0700: Device is a Virtual NIC QDIO card (level: V712)
Ý1.169613+ with link type Virt.NIC QDIO (portname: )
Ý  124.355856+ dracut-initqueueÝ363+: Warning: dracut-initqueue timeout - 
starting timeout scripts""
Ý  124.862823+ dracut-initqueueÝ363+: Warning: dracut-initqueue timeout - 
starting timeout scripts""
Ý  125.366826+ dracut-initqueueÝ363+: Warning: dracut-initqueue timeout - 
starting timeout scripts""
...lots of timeout script errors...
Ý  184.424496+ dracut-initqueueÝ363+: Warning: dracut-initqueue timeout - 
starting timeout scripts""
Ý  184.424755+ dracut-initqueueÝ363+: Warning: Could not boot.""
Ý  184.425825+ dracut-initqueueÝ363+: Warning: /dev/mapper/rhel_opncl41-root 
does not exist"
 Starting Dracut Emergency Shell..."
Warning: /dev/mapper/rhel_opncl41-root does not exist

Generating "/run/initramfs/rdsosreport.txt"


Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /boot
after mounting them and attach it to a bug report.






Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Marcy Cortes 

Sent: Wednesday, April 15, 2020 11:42 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Adding disk to root LVM with RHEL 7

I'm kind of assuming RH7 works like sles11 and doesn't use grub2, but did you 
"mkinird; zipl" after getting that disk online?

You can also "cat / run/initramfs/rdsosreport.txt" in that emergency mode to 
get more details.




-Original Message-
From: Linux on 390 Port  On Behalf Of Rick Troth
Sent: Wednesday, April 15, 2020 

Re: Adding disk to root LVM with RHEL 7

[Martha McConaghy]

Ah, DOH!  I did not run mkinitrd and am now kicking myself.  (Its OK, I need 
the exercise.)  I'll give that a try and see if it makes a difference.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Marcy Cortes 

Sent: Wednesday, April 15, 2020 11:42 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Adding disk to root LVM with RHEL 7

I'm kind of assuming RH7 works like sles11 and doesn't use grub2, but did you 
"mkinird; zipl" after getting that disk online?

You can also "cat / run/initramfs/rdsosreport.txt" in that emergency mode to 
get more details.




-Original Message-
From: Linux on 390 Port  On Behalf Of Rick Troth
Sent: Wednesday, April 15, 2020 8:26 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: [LINUX-390] Adding disk to root LVM with RHEL 7

Looks like you did everything right: online, dasdfmt, fdasd, lvextend,
vgextend, and using "1" instead of the whole disk (because it's ECKD and
requires the VTOC).

The first block where you get an error is 16380912. Maybe that's a clue?
Looks like cylinder #109206 (150 4K blocks per ECKD cyl). Someone check
my math? And the (new) root FS looks like 110100 cyls.
The VG has two disks, correct? How big are they?
So where is this troublesome block in the grand scheme?

I don't recall resizing a filesystem *down*, but I think it can be done.
I'm always nervous about that last block (or several) in any filesystem,
any backing store (CKD, FBA, SCSI/SAN), anymode (LVM, partitioned, whole).
Never know when the system or some program will walk to the end "just
because".

-- R; <><


On 4/15/20 10:58 AM, Martha McConaghy wrote:
> I have servers that I'm setting up with RHEL 7.8 on ECKD disk.  I installed 
> it with root in an LVM, all of that worked fine.  Now, I'm testing adding a 
> 2nd ECKD disk to the LVM as I know that will be required in the future, but 
> I'm running into a confusing problem.  Everything works as I expect and the 
> disk space shows up in / as it should.  When I reboot the server, however, it 
> goes to heck and ends up in emergency mode.  The most prominent feature of 
> the console are a bunch of I/O errors on device dm-2, which is the disk I 
> just added.  Below are the steps I followed to add the disk.  Before doing 
> this, I had activated the disk, added it to /etc/dasd.conf and run zipl.  
> After doing that, I rebooted to ensure that the disk came up online, which it 
> did.  So, I'm confident that the disk is there when the system rebooted the 
> 2nd time.
>
> I have a lot of colleagues who work with Linux all the time, but don't 
> usually have root as an LVM.  They haven't seen this problem before, but they 
> work mainly on X.  Could this be specific problem to using ECKD?  I have 
> thought of going to an FBA LUN, but had spare ECKD to use.
>
> Martha
>
>
> [root@opncl42 ~]# cio_ignore -r 0.0.0200
> [root@opncl42 ~]# chccwdev --online 0.0.0200
> Setting device 0.0.0200 online
> Done
> [root@opncl42 ~]# lsdasd
> Bus-ID Status  Name  Device  Type  BlkSz  Size  Blocks
> ==
> 0.0.0150   active  dasda 94:0ECKD  4096   46068MB   11793420
> 0.0.0200   active  dasdb 94:4ECKD  4096   23033MB   5896620
> [root@opncl42 ~]# vi /etc/dasd.conf
> [root@opncl42 ~]# zipl
> Using config file '/etc/zipl.conf'
> Building bootmap in '/boot'
> Building menu 'zipl-automatic-menu'
> Adding #1: IPL section '3.10.0-1127.el7.s390x' (default)
> Adding #2: IPL section '3.10.0-1127.el7.s390x_with_debugging'
> Adding #3: IPL section 'linux'
> Preparing boot device: dasda (0150).
> Done.
> [root@opncl42 ~]# reboot
> ---
> [root@opncl42 ~]# lsdasd
> Bus-ID Status  Name  Device  Type  BlkSz  Size  Blocks
> ==
> 0.0.0150   active  dasda 94:0ECKD  4096   46068MB   11793420
> 0.0.0200   active  dasdb 94:4ECKD  4096   23033MB   5896620
>
> [root@opncl42 ~]# dasdfmt -p -f /dev/dasdb
> Please enter the blocksize of the formatting [4096]:
> Drive Geometry: 32759 Cylinders * 15 Heads =  491385 Tracks
>
> I am going to format the device /dev/dasdb in the following way:
>Device number of device : 0x200
>Labelling device: yes
>Disk label  : VOL1
>Disk identifier : 0X0200
>Extent start (trk no)   : 0
>Extent end (trk no) : 491384
>Compatible Disk Layout  : yes
>Blocksize   : 4096
>Mode   

Adding disk to root LVM with RHEL 7

[Martha McConaghy]

/dev/mapper/rhel_opncl41-root   63G  2.0G   61G   4% /
/dev/dasda1   494M  136M  359M  28% /boot
tmpfs 2.0G 0  2.0G   0% 
/run/user/1000
[root@opncl42 ~]# reboot


Last part of console as it goes into emergency mode:

13 Ý Ý32m  OK   Ý0m¨ Started File System Check on /dev/mapper/rhel_opncl41-root.
14 Ý Ý32m  OK   Ý0m¨ Started dracut initqueue hook.
15  Mounting /sysroot...
16 Ý Ý32m  OK   Ý0m¨ Reached target Remote File Systems (Pre).
17 Ý Ý32m  OK   Ý0m¨ Reached target Remote File Systems.
18 Ý  123.794007¨ Buffer I/O error on dev dm-2, logical block 16380912, async 
page read
19 Ý Ý1;31mFAILED Ý0m¨ Failed to mount /sysroot.
20 See 'systemctl status sysroot.mount' for details.
21 Ý Ý1;33mDEPEND Ý0m¨ Dependency failed for Initrd Root File System.
22 Ý Ý1;33mDEPEND Ý0m¨ Dependency failed for Reload Configuration from the Real 
Root.
23 Ý Ý32m  OK   Ý0m¨ Stopped dracut pre-udev hook.
24 Ý Ý32m  OK   Ý0m¨ Stopped dracut cmdline hook.
25 Ý Ý32m  OK   Ý0m¨ Reached target Initrd File Systems.
26 Ý Ý32m  OK   Ý0m¨ Stopped target Basic System.
27 Ý Ý32m  OK   Ý0m¨ Stopped target System Initialization.
28 Ý Ý32m  OK   Ý0m¨ Stopped dracut initqueue hook.
29 Ý Ý32m  OK   Ý0m¨ Started Emergency Shell.
30 Ý Ý32m  OK   Ý0m¨ Reached target Emergency Mode.
31
32 Generating "/run/initramfs/rdsosreport.txt"
33 Ý  123.845595¨ Buffer I/O error on dev dm-2, logical block 16380912, async
   page read
34 Ý  123.846240¨ Buffer I/O error on dev dm-2, logical block 16380912, async
   page read
35
36
37 Entering emergency mode. Exit the shell to continue.
38 Type "journalctl" to view system logs.
39 You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /
   boot
40 after mounting them and attach it to a bug report.
41
42
43 :/#

Information from Journalctl while in emergency mode:

 ÝKApr 15 02:21:42 opncl42 systemdÝ1¨: Reached target Basic System. Ým
Apr 15 02:21:42 opncl42 kernel:  Ý1;31mnetif_napi_add() called with weight 128 o
n devic Ým
Apr 15 02:21:42 opncl42 kernel: qeth 0.0.0700: MAC address 02:01:42:00:00:08 suc
 Ým
Apr 15 02:21:42 opncl42 kernel: qeth 0.0.0700: Device is a Virtual NIC QDIO card
 Ým
with link type Virt.NIC QDIO (portname: ) Ým
Apr 15 02:23:45 opncl42 dracut-initqueueÝ398¨: Warning: dracut-initqueue timeout
 Ým
Apr 15 02:23:45 opncl42 kernel:  Ý1;31mBuffer I/O error on dev dm-2, logical blo
ck 1638 Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Found device /dev/mapper/rhel_opncl41-root.
Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Starting File System Check on /dev/mapper/rh
 Ým
Apr 15 02:23:45 opncl42 systemd-fsckÝ2026¨: fsck: error 2 (No such file or direc
 Ým
Apr 15 02:23:45 opncl42 systemd-fsckÝ2026¨:  Ý1;31mfsck failed with error code 8
. Ý0m Ým
Apr 15 02:23:45 opncl42 systemd-fsckÝ2026¨:  Ý1;39mIgnoring error. Ý0m Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Started File System Check on /dev/mapper/rhe
 Ým
Apr 15 02:23:45 opncl42 kernel:  Ý1;31mBuffer I/O error on dev dm-2, logical blo
ck 1638 Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Started dracut initqueue hook. Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Mounting /sysroot... Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Reached target Remote File Systems (Pre). Ým

Apr 15 02:23:45 opncl42 systemdÝ1¨: Reached target Remote File Systems. Ým
Apr 15 02:23:45 opncl42 mountÝ2042¨: mount: you must specify the filesystem type
 Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨:  Ý1;39msysroot.mount mount process exited, c
ode=exi Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨:  Ý1;31mFailed to mount /sysroot. Ý0m Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨:  Ý1;39mDependency failed for Initrd Root Fil
e Syste Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨:  Ý1;39mDependency failed for Reload Configur
ation f Ým
 Ý7mlines 193-215 Ý27m ÝK  ÝKApr 15 02:23:45 opncl42 systemdÝ1¨:  Ý1;39mJob ini
Ým
Apr 15 02:23:45 opncl42 kernel:  Ý1;31mBuffer I/O error on dev dm-2, logical blo
ck 1638 Ým
Apr 15 02:23:45 opncl42 systemdÝ1¨: Received SIGRTMIN+21 from PID 406 (plymouthd
 Ým
Apr 15 02:23:45 opncl42 kernel:  Ý1;31mBuffer I/O error on dev dm-2, logical blo
ck 1638 Ým
Apr 15 02:23:45 opncl42 kernel:  Ý1;31mBuffer I/O error on dev dm-2, logical blo
ck 1638 Ým
 Ý7mlines 211-233/233 (END) Ý27m ÝK  ÝK   ÝK Ý7mlines 211-233/233 (END) Ý27m ÝK





Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
http://www2.marist.edu/htbin/wlvindex?LINUX-390

Re: Dynamically turning on memory

[Martha McConaghy]

Oh, Doh!  That is just what I need.  Thanks so much, Marcy.  Guess my googling 
skills are on the fritz today.  Nothing I found mentioned either of those 
commands.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601


From: Linux on 390 Port  on behalf of Marcy Cortes 

Sent: Thursday, January 23, 2020 11:02 AM
To: LINUX-390@VM.MARIST.EDU 
Subject: Re: Dynamically turning on memory

I’ve never done it in an LPAR, but it should be the same.

Use chmem-e 256G

Use lsmem to check


Sent with BlackBerry Work
(www.blackberry.com<http://www.blackberry.com>)


From: Martha McConaghy 
mailto:martha.mccona...@marist.edu>>
Date: Thursday, Jan 23, 2020, 7:57 AM
To: LINUX-390@VM.MARIST.EDU 
mailto:LINUX-390@VM.MARIST.EDU>>
Subject: [LINUX-390] Dynamically turning on memory

I have a feeling that this is a "dumb user" question, but googling around has 
not provided an answer that fits our environment.  Since I'm messing with a 
production system, I don't want to screw around and do something wrong.

I have an LPAR on a z15 that is running Ubuntu 18.04 native.  It has 768G of 
memory with 256G in reserve.  I need to turn on some of that 256G and have the 
Ubuntu system use it.  Under z/VM, its one command and you are done..   In 
this environment, I have no idea how to:

  1.  Get some of the 256G released from reserve
  2.  Get Ubuntu to use it

I'm sure that this is something that many of you have done before, so, please, 
help. Point me to a doc or something that describes the process.  The system is 
running KVM and openstack, and there are nearly 100 servers running on it.  So, 
I can't afford to reboot to turn on the memory.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
http://www2.marist.edu/htbin/wlvindex?LINUX-390

--
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send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
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send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
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Dynamically turning on memory

[Martha McConaghy]

I have a feeling that this is a "dumb user" question, but googling around has 
not provided an answer that fits our environment.  Since I'm messing with a 
production system, I don't want to screw around and do something wrong.

I have an LPAR on a z15 that is running Ubuntu 18.04 native.  It has 768G of 
memory with 256G in reserve.  I need to turn on some of that 256G and have the 
Ubuntu system use it.  Under z/VM, its one command and you are done..   In 
this environment, I have no idea how to:

  1.  Get some of the 256G released from reserve
  2.  Get Ubuntu to use it

I'm sure that this is something that many of you have done before, so, please, 
help. Point me to a doc or something that describes the process.  The system is 
running KVM and openstack, and there are nearly 100 servers running on it.  So, 
I can't afford to reboot to turn on the memory.

Martha


Martha McConaghy

Marist:  System Architect/Technical Lead

SHARE Association:  Vice President

Marist College IT

Poughkeepsie, NY 12601

--
For LINUX-390 subscribe / signoff / archive access instructions,
send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit
http://www2.marist.edu/htbin/wlvindex?LINUX-390

Re: Happy birthday

[Martha McConaghy]

Reading all these emails, especially this one, brings back a lot of 
memories.   Especially, how we were rushing to get the web site up to 
make the "Marist distro" available before Y2K brought the whole world 
downdoh!


Martha

On 12/19/2019 8:20 AM, Rob van der Heij wrote:

On Thu, 19 Dec 2019 at 03:34, Rich Smrcina 
wrote:
  

I’m sure there were more than a few of us installing the ‘Marist’
distribution on our mainframes over Christmas.

  
For me the journey started a bit earlier, working on Melinda's system in

Princeton. I told my wife this was significant for z/VM and I would be
spending more spare time on it, for a few months. As all projects it took
longer. A few months later, at the office wearing my Marist sweat shirt,
someone pointed saying "Hey, that's a Mainframe Linux sweat shirt!"
  
Rob
  
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--
Martha McConaghy
Marist: System Architect/Technical Lead
SHARE: Vice President
Marist College IT
Poughkeepsie, NY 12601

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Re: backup product

[Martha McConaghy]

We have backed up all of our Linux servers (z or x86 based) on TSM for
years (now Spectrum Protectbut will always be ADSM to me).

We haven't gone to SLES 15 yet, but I don't know of a reason why it
would not work.

Martha

On 11/4/2019 1:38 PM, Mark Post wrote:

On 11/4/19 1:00 PM, Levy, Alan wrote:

Does anyone have any recommendations for a product that will backup up our 
linux servers (dasd and san) ?

I know that Tivoli Storage Manager works on Linux for IBM Z. If you have
SCSI tape drives, you can even run the TSM Server on Z.


Mark Post

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Re: KVM and FCP disk without SAN switch

[Martha McConaghy]

Carlos is right.  It really doesn't matter what system is on the Z (VM 
or Linux), it has more to do with the FCP FICON adapters. The v 
boxes don't have the protocol to talk to FCP directly, while the more 
sophistcated DS8xxx do.  So, no matter what system you are talking to on 
Z, you would need a switch for the v5010.


Martha

On 9/16/2019 4:44 PM, Jim Elliott wrote:

Carlos:
  
Thanks. It will be a V5010 so we will configure a small SAN switch.
  
Jim Elliott

Senior Consultant - GlassHouse Systems Inc.
  
  
On Mon, Sep 16, 2019 at 4:39 PM Bodra - Pessoal  wrote:
  

 From our experience with KVM running on a zBox if you use as storage
devices IBM V5000 or V7000 you need to use a San Switch (2498-Bxx) to
connect. If you use storage devices IBM DS8800/8870, you can connect
directly. These are some tests that we did here at our shop.


Carlos Bodra
IBM zEnterprise Certified
São Paulo – SP – Brazil


-Mensagem original-
De: Linux on 390 Port  Em nome de Jim Elliott
Enviada em: segunda-feira, 16 de setembro de 2019 16:20
Para: LINUX-390@VM.MARIST.EDU
Assunto: KVM and FCP disk without SAN switch

For z/VM you must have a SAN switch to connect FCP attached disk. Is this
also true for KVM (Ubuntu if it matters)?

Jim Elliott
Senior Consultant - GlassHouse Systems Inc.

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Re: Zimbra Collaboration server on Linux on Z

[Martha McConaghy]

Jim,

I don't think that was ever supported on Z.  We tried a few years ago, 
to get the Zimbra folks interested in porting it to Z, but they 
refused.  So, unless someone else was more successful, I don't think a Z 
port exists.  If you find out different, let me know.


Martha

On 8/19/2019 11:18 AM, Jim Elliott wrote:

I have a vague memory of this e-mail server being supported on Linux on Z
from a few years ago. Does anyone here know if it is still supported/works?
The Zimbra web site just list the various Linux distros supported with no
platform info.
  
Jim Elliott

Senior Consultant - GlassHouse Systems Inc.
  
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Re: Issues trying to install RHEL 8

[Martha McConaghy]

Thanks for all the suggestions so far.  I have tried it with both an 
EDEV minidisk and ECKD minidisk, same problem on each.  I've got a 
couple of people looking at the RDSOS file, so perhaps that will get me 
somewhere.  Oh, and its an 8G machine, not 3G as I first 
mentioned...typo'd it.  I am wondering about the ISO I'm using for the 
install, so am checking into that too.  (Someone supplied it to me, not 
sure where they got it.)


The only thing I find really weird in the rdsos file is that iscsid 
keeps showing up.  Not sure why for a RAM disk install, with a target on 
a ECKD disk.  But there are a bunch of iscsid errors just before the 
initqueue timeout errors start.  So, just wondering if that is a 
coincidence or cause/effect.


Martha

Ý    6.220883+ localhost systemdÝ1+: Starting dracut initqueue hook...
Ý    6.220921+ localhost systemdÝ1+: Reached target System Initialization.
Ý    6.220949+ localhost systemdÝ1+: Reached target Basic System.
Ý    6.257287+ localhost systemdÝ1+: Reloading.
Ý    6.343912+ localhost dracut-initqueueÝ932+: RTNETLINK answers: File 
exists
Ý    7.192756+ localhost iscsidÝ922+: can't open InitiatorName 
configuration file /etc/iscsi/initiatorname.iscsi
Ý    7.193054+ localhost iscsidÝ922+: Warning: InitiatorName file 
/etc/iscsi/initiatorname.iscsi does not exist or does not contain
a properly formatted InitiatorName. If using software iscsi (iscsi_tcp 
or ib_iser) or partial offlo

ad (bnx2i or cxgbi iscsi), you may not be able to log into or
Ý    7.193067+ localhost iscsidÝ922+: can't open InitiatorAlias 
configuration file /etc/iscsi/initiatorname.iscsi

Ý   80.870229+ localhost kernel: random: crng init done
Ý   80.870238+ localhost kernel: random: 7 urandom warning(s) missed due 
to ratelimiting
Ý  143.692051+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  144.281868+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  144.841835+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  145.403541+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  145.971745+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  146.531609+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  147.091997+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  147.661643+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  148.223507+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts
Ý  148.792142+ localhost dracut-initqueueÝ932+: Warning: 
dracut-initqueue timeout - starting timeout scripts


On 7/31/2019 5:52 AM, Rinaldo wrote:

Hi Martha!

If you are installing RHEL 8 in EDEV disk, there is an issue, the 
install fail.


I opened a ticket to RedHat and they told me installation will fail if 
it is a FBA type disk. They provided a fix until they correct the ISO 
file.


Basically, they provided me a "updates.img" and I added in the boot 
parameter "inst.update=ftp://<...>/updates.img"


If you are interested, I can send you the file. Or you can open a case 
in RedHat support.


Best Regards,

Rinaldo Akio Uehara
Serviço Federal de Processamento de Dados (SERPRO)
tel: (11) 2173-3228
e-mail: rinaldo.ueh...@serpro.gov.br

Em 30/07/2019 23:52, Martha McConaghy escreveu:
Has anyone run into problems getting RHEL 8 to install on Z? I've run 
into a weird problem.  Two different experienced Linux guys have 
looked at it, and we are all stumped.


Background:

The install is being done in a 3G virtual machine on z/VM 6.4 on a 
LinuxOne (z13 generation).  We have lots of different versions of 
Linux running on the same system, including RHEL 7, CentOS, Ubuntu 18 
and SLES 15.  So, I don't think its a kernel/cpu type problem.


Problem:

When I run the REDHAT exec to bring up the install kernel, it starts 
booting and things look like they will be OK.  Until it gets to the 
point where "dracut initqueue" starts.  There is a message "7 urandom 
warnings(s) missed due to ratelimiting".  It then pauses for a couple 
of minutes, followed by a series of messages, "dracut-initqueue 
timeout - starting timeout scripts". Eventually, it ends up in dracut 
in emergency mode.  The install process never starts.  I've changed 
numerous parameters, even changed what type of disk I'm using for the 
install.  It doesn't matter, its exactly the same problem each time.


Really scratching my head on this one.

Martha

Ý"Ý0;32m  OK  "Ý0m+ Reached target Local File Systems.""
 Starting Create Volatile Files and Directories...""
 Starting Open-iSCSI...""
Ý"Ý0;32m  OK  "Ý0m+ Sta

Issues trying to install RHEL 8

[Martha McConaghy]

Has anyone run into problems getting RHEL 8 to install on Z? I've run 
into a weird problem.  Two different experienced Linux guys have looked 
at it, and we are all stumped.


Background:

The install is being done in a 3G virtual machine on z/VM 6.4 on a 
LinuxOne (z13 generation).  We have lots of different versions of Linux 
running on the same system, including RHEL 7, CentOS, Ubuntu 18 and SLES 
15.  So, I don't think its a kernel/cpu type problem.


Problem:

When I run the REDHAT exec to bring up the install kernel, it starts 
booting and things look like they will be OK.  Until it gets to the 
point where "dracut initqueue" starts.  There is a message "7 urandom 
warnings(s) missed due to ratelimiting".  It then pauses for a couple of 
minutes, followed by a series of messages, "dracut-initqueue timeout - 
starting timeout scripts". Eventually, it ends up in dracut in emergency 
mode.  The install process never starts.  I've changed numerous 
parameters, even changed what type of disk I'm using for the install.  
It doesn't matter, its exactly the same problem each time.


Really scratching my head on this one.

Martha

Ý"Ý0;32m  OK  "Ý0m+ Reached target Local File Systems.""
 Starting Create Volatile Files and Directories...""
 Starting Open-iSCSI...""
Ý"Ý0;32m  OK  "Ý0m+ Started Open-iSCSI.""
Ý"Ý0;32m  OK  "Ý0m+ Started Create Volatile Files and Directories.""
Ý"Ý0;32m  OK  "Ý0m+ Reached target System Initialization.""
Ý"Ý0;32m  OK  "Ý0m+ Reached target Basic System.""
 Starting dracut initqueue hook...""
Ý    6.306800+ dracut-initqueueÝ929+: RTNETLINK answers: File exists""
Ý   84.168981+ random: crng init done
Ý   84.168992+ random: 7 urandom warning(s) missed due to ratelimiting
Ý  142.340863+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""
Ý  142.931884+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""
Ý  143.490965+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""
Ý  144.080845+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""


 209.140407+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout - 
starting timeout scripts""
Ý  209.700768+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""
Ý  210.270398+ dracut-initqueueÝ929+: Warning: dracut-initqueue timeout 
- starting timeout scripts""

Ý  210.270531+ dracut-initqueueÝ929+: Warning: Could not boot.""
 Starting Setup Virtual Console...""
Ý"Ý0;32m  OK  "Ý0m+ Started Setup Virtual Console.""
 Starting Dracut Emergency Shell...""
Warning: /dev/root does not exist

Generating "/run/initramfs/rdsosreport.txt"

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Marist: System Architect/Technical Lead
SHARE Association: Vice President
Marist College IT
Poughkeepsie, NY 12601

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Re: Server don't boot after patch

[Martha McConaghy]

Based on our recent experience, I would agree.  Imagine applying an RSU 
to a bunch of VM systems and then have them systematically die with file 
system corruption errors.  That's basically what happened to all of our 
SLES 12 systems.  We have been working with SUSE to find the cause 
(other than it being a BTFRS issue), but no solutions have worked.  So, 
we moved them all to ext4.


Martha

On 7/13/2019 11:46 PM, Marcy Cortes wrote:

In my case no.  I decided it wasn’t ready given the amount of things in the 
change logs.


Sent with BlackBerry Work
(www.blackberry.com)

From: Martha McConaghy 
mailto:martha.mccona...@marist.edu>>
Date: Saturday, Jul 13, 2019, 8:17 PM
To: LINUX-390@VM.MARIST.EDU 
mailto:LINUX-390@VM.MARIST.EDU>>
Subject: Re: [LINUX-390] Server don't boot after patch

Was this with BTRFS or another filesystem?  We have had huge problems
with BTRFS and now have had to convert all of our SLES 12 servers to
ext4 to avoid it.  The problems all hit when we moved to SP4 from
earlier levels of SLES 12.  One by one, even the stable servers failed.

Martha

On 7/13/2019 6:08 PM, Marcy Cortes wrote:

Exactly what happened to us.   I posted here last month when it happenend.

SUSE has given us a temp PTF that we've just started testing

What you need to do to recover is to boot a rescue system and bring on all your 
devices with chzdev.
Then run mkinitrd and grub2-install and cross your fingers.

Marcy

On 7/13/19, 6:11 AM, "Linux on 390 Port on behalf of Victor Echavarry" 
 wrote:

  Hi:

  Yesterday  after perform an update in one of our test servers (SLES12 SP4) 
and after updating & rebooting, now the server won't boot. This are the messages

  Booting default (grub2)
  dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting 
timeout scri
  pts
  dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting 
timeout scr

  dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting 
timeout scri
  pts
  dracut-initqueue[403]: Warning: Could not boot.
   Starting Dracut Emergency Shell...
  Warning: /dev/mapper/sys-user does not exist
  Warning: /dev/sys/user does not exist


  Generating "/run/initramfs/rdsosreport.txt"


  Entering emergency mode. Exit the shell to continue.
  Type "journalctl" to view system logs.
  You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or 
/boot
  after mounting them and attach it to a bug report.


  Give root password for maintenance

  Please note, this server has the following filesystem layout:


1.  DASD device (non-LVM) --- (root filesystem)
  (5) DASD devices for "sys" volume group for the rest of filesystem: /var, 
/usr etc..

  We can mount / filesystem on another zLinux system and have access to 
/boot and  /etc and trying to rebuild grub and is unsussceful.

  Any help?

  Regards,

  Victor Echavarry
  System Programmer
  Operating Systems
  EVERTEC, LLC




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Re: Server don't boot after patch

[Martha McConaghy]

Was this with BTRFS or another filesystem?  We have had huge problems 
with BTRFS and now have had to convert all of our SLES 12 servers to 
ext4 to avoid it.  The problems all hit when we moved to SP4 from 
earlier levels of SLES 12.  One by one, even the stable servers failed.


Martha

On 7/13/2019 6:08 PM, Marcy Cortes wrote:

Exactly what happened to us.   I posted here last month when it happenend.
  
SUSE has given us a temp PTF that we've just started testing
  
What you need to do to recover is to boot a rescue system and bring on all your devices with chzdev.

Then run mkinitrd and grub2-install and cross your fingers.
  
Marcy
  
On 7/13/19, 6:11 AM, "Linux on 390 Port on behalf of Victor Echavarry"  wrote:
  
 Hi:
 
 Yesterday  after perform an update in one of our test servers (SLES12 SP4) and after updating & rebooting, now the server won't boot. This are the messages
 
 Booting default (grub2)

 dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting 
timeout scri
 pts
 dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting 
timeout scr
 
 dracut-initqueue[403]: Warning: dracut-initqueue timeout - starting timeout scri

 pts
 dracut-initqueue[403]: Warning: Could not boot.
  Starting Dracut Emergency Shell...
 Warning: /dev/mapper/sys-user does not exist
 Warning: /dev/sys/user does not exist
 
 
 Generating "/run/initramfs/rdsosreport.txt"
 
 
 Entering emergency mode. Exit the shell to continue.

 Type "journalctl" to view system logs.
 You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or 
/boot
 after mounting them and attach it to a bug report.
 
 
 Give root password for maintenance
 
 Please note, this server has the following filesystem layout:
 
 
   1.  DASD device (non-LVM) --- (root filesystem)

 (5) DASD devices for "sys" volume group for the rest of filesystem: /var, 
/usr etc..
 
 We can mount / filesystem on another zLinux system and have access to /boot and  /etc and trying to rebuild grub and is unsussceful.
 
 Any help?
 
 Regards,
 
 Victor Echavarry

 System Programmer
 Operating Systems
 EVERTEC, LLC
 
 
 
 
 WARNING: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it immediately. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of EVERTEC, Inc. or its affiliates. Finally, the integrity and security of this message cannot be guaranteed on the Internet, and as such EVERTEC, Inc. and its affiliates accept no liability for any damage caused by any virus transmitted by this email.
 
 --

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Re: Horizontal vs. Vertical on guest on z/VM

[Martha McConaghy]

I really admire Alan's ability to be lyrical in a technical email.  It 
rhymes too! =-O


Martha

On 3/21/2019 1:19 AM, Alan Altmark wrote:

There is no virtualization of the topology, so horizontal it must be.
  
  
Regards,

Alan Altmark
IBM
  

On Mar 21, 2019, at 12:45 AM, Marcy Cortes

 wrote:

So knowing z/VM is running vertical, should I be concerned that linux is

horizontal?

This is sles12 sp3

# lscpu
Architecture:  s390x
CPU op-mode(s):32-bit, 64-bit
Byte Order:Big Endian
CPU(s):6
On-line CPU(s) list:   0-5
Thread(s) per core:1
Core(s) per socket:1
Socket(s) per book:1
Book(s) per drawer:1
Drawer(s): 6
NUMA node(s):  1
Vendor ID: IBM/S390
Machine type:  2964
BogoMIPS:  3033.00
Hypervisor:z/VM 6.4.0
Hypervisor vendor: IBM
Virtualization type:   full
Dispatching mode:  horizontal
L1d cache: 128K
L1i cache: 96K
L2d cache: 2048K
L2i cache: 2048K
L3 cache:  65536K
L4 cache:  491520K
NUMA node0 CPU(s): 0-63
Flags: esan3 zarch stfle msa ldisp eimm dfp edat etf3eh

highgprs te vx sie

Marcy

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Re: Xymon

[Martha McConaghy]

Thanks, Juha.  I wasn't aware that anyone had picked them up and 
continued development.  Its good to know.


Martha

On 1/23/2019 6:56 PM, Juha Vuori wrote:

Hi,

Xymon clients for z/OS, z/VSE and z/VM (currently called zXymon) can 
be downloaded in


http://download.savannah.nongnu.org/releases/zxymon/

They still work well together with the latest Xymon server (stable 
version 4.3.28).


zXymon development tree has few enhancements (too few worth of a new 
release).


If you have made good enhancements to the code/functionality, I'd be 
more than happy if you'd like to share them to the development tree!



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Re: Xymon

[Martha McConaghy]

Defining the template to match the MIB information is the big PITA, 
though.  There is a Xymon plugin named devmon, which is what we use to 
monitor the network equipment, environmentals, etc.  It talks snmp, but 
has limited capabilities.  There might be a newer one out there, I 
haven't kept up on it in a few years.


I think the z/OS clients are also in REXX, so should be easy to port to 
VSE, if it supports that.  (Sorry, I don't recall off the top of my 
head.)  Then it is just a matter of updating the execs to look at the 
right spots in the system.


Martha

On 1/23/2019 4:12 PM, Stuart, David wrote:

If Xymon can talk SNMP, which it probably can if it's monitoring network 
equipment, there's an SNMP 'agent' (?) that's part of z/VSE that will tell you 
if the System is responding, at a minimum. I believe there is other info you 
can get from the SNMP 'agent' as well. I've played with it some, but we don’t 
actually use it.


Dave


Dave Stuart
Principal Info. Systems Support Analyst
County of Ventura
805-662-6731
david.stu...@ventura.org


-Original Message-
From: Linux on 390 Port  On Behalf Of Martha McConaghy
Sent: Wednesday, January 23, 2019 1:05 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Xymon

Its just a set of REXX execs that Rich wrote some years ago. They used to be on 
the site, but that was back when it was Hobbit.  I'm not sure they are still 
there.  (Richare you listening?)

If all else fails, I can pack up what I have and make them available somewhere.

Martha

On 1/23/2019 3:49 PM, Diep, David (OCTO) wrote:

Martha, I had no idea there is a XYMON client for z/VM. Is it downloadable from 
the XYMON project website?


-Original Message-
From: Linux on 390 Port  On Behalf Of Martha
McConaghy
Sent: Wednesday, January 23, 2019 3:38 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Xymon

CAUTION: This email originated from outside of the DC Government. Do not click 
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SLES 12 on z/VM.  Should not matter to the clients, though.  We monitor z/OS, 
z/VM, hundreds of zLinux and hundreds of ESX based Linux/Windows.
Also monitor all network equipment.

Martha

On 1/23/2019 3:29 PM, Tom Huegel wrote:

Martha, What platform do you run Xymon server on? Thanks - Tom

On Wed, Jan 23, 2019 at 2:27 PM Martha McConaghy <
martha.mccona...@marist.edu> wrote:


We use Xymon to monitor all of our servers, regardless of platform.  I
have not done VSE as we don't have it.   However, there is a client that
works on z/OS, which we use a lot.  It probably can be modified to
work on VSE.  I think Rich Smrcina wrote it.

Martha

On 1/23/2019 3:15 PM, Tom Huegel wrote:

Just wondering if anyone has used Xymon in z/LINUX to monitor other
OS's

ie

z/VSE?

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Re: Xymon

[Martha McConaghy]

Its just a set of REXX execs that Rich wrote some years ago. They used 
to be on the site, but that was back when it was Hobbit.  I'm not sure 
they are still there.  (Richare you listening?)


If all else fails, I can pack up what I have and make them available 
somewhere.


Martha

On 1/23/2019 3:49 PM, Diep, David (OCTO) wrote:

Martha, I had no idea there is a XYMON client for z/VM. Is it downloadable from 
the XYMON project website?


-Original Message-
From: Linux on 390 Port  On Behalf Of Martha McConaghy
Sent: Wednesday, January 23, 2019 3:38 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Xymon

CAUTION: This email originated from outside of the DC Government. Do not click 
on links or open attachments unless you recognize the sender and know that the 
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SLES 12 on z/VM.  Should not matter to the clients, though.  We monitor z/OS, 
z/VM, hundreds of zLinux and hundreds of ESX based Linux/Windows.
Also monitor all network equipment.

Martha

On 1/23/2019 3:29 PM, Tom Huegel wrote:

Martha, What platform do you run Xymon server on? Thanks - Tom

On Wed, Jan 23, 2019 at 2:27 PM Martha McConaghy <
martha.mccona...@marist.edu> wrote:


We use Xymon to monitor all of our servers, regardless of platform.  I
have not done VSE as we don't have it.   However, there is a client that
works on z/OS, which we use a lot.  It probably can be modified to
work on VSE.  I think Rich Smrcina wrote it.

Martha

On 1/23/2019 3:15 PM, Tom Huegel wrote:

Just wondering if anyone has used Xymon in z/LINUX to monitor other
OS's

ie

z/VSE?


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Re: Xymon

[Martha McConaghy]

SLES 12 on z/VM.  Should not matter to the clients, though.  We monitor 
z/OS, z/VM, hundreds of zLinux and hundreds of ESX based Linux/Windows.  
Also monitor all network equipment.


Martha

On 1/23/2019 3:29 PM, Tom Huegel wrote:

Martha, What platform do you run Xymon server on? Thanks - Tom
  
On Wed, Jan 23, 2019 at 2:27 PM Martha McConaghy <

martha.mccona...@marist.edu> wrote:
  

We use Xymon to monitor all of our servers, regardless of platform.  I
have not done VSE as we don't have it.   However, there is a client that
works on z/OS, which we use a lot.  It probably can be modified to work
on VSE.  I think Rich Smrcina wrote it.

Martha

On 1/23/2019 3:15 PM, Tom Huegel wrote:

Just wondering if anyone has used Xymon in z/LINUX to monitor other OS's

ie

z/VSE?

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Re: Xymon

[Martha McConaghy]

We use Xymon to monitor all of our servers, regardless of platform.  I 
have not done VSE as we don't have it.   However, there is a client that 
works on z/OS, which we use a lot.  It probably can be modified to work 
on VSE.  I think Rich Smrcina wrote it.


Martha

On 1/23/2019 3:15 PM, Tom Huegel wrote:

Just wondering if anyone has used Xymon in z/LINUX to monitor other OS's ie
z/VSE?
  
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Re: xymon on zLinux anyone?

[Martha McConaghy]

We use Xymon a great deal, it monitors all of our servers and network 
equipment (several thousand items).  We run the server on zLinux (SLES) 
and the client runs just about anywhere.  There are even clients for 
z/VM and z/OS (thanks Rich!).  Its all PhP based, so I don't think an 
RPM is necessary.  (I haven't done the install in a long time, someone 
else in our group does that.)  Its definitely not specific to any 
version of Linux.  As long as you have Apache and PhP installed, it 
should run on Clef.


Martha


On 7/24/2018 8:43 AM, Frank M. Ramaekers wrote:

Anyone doing xymon on zLinux?   Know where a RPM for ClefOS might be found?
  
Frank M. Ramaekers Jr. | Systems Programmer | Information Technology | American Income Life Insurance Company | 254-761-6649 (732-6649)
  
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Re: Spectre and Meltdown stupid question...

[Martha McConaghy]

Paul,

The answer is "yes". A MCL for hardware came out last week.  I believe it
applies to models z14 down through z114.  At least, our z13s, BC12 and z114
all received it.  (We wanted it on as soon as possible.)

In addition, there is a z/VM PTF, though I'm not sure it is out yet.  Its z/VM
6.4 only, so I can't get it until I finish getting my systems upgraded.  I'm
not as worried about z/VM since our users/customers have no direct access to
it.

The Linux distributions have been our main concern and the patches have been
coming out slowly.  Its my understanding that "meltdown" is not much of a
concern for Z but "spectre" is.  (Someone correct me if I'm misstating
anything.)  SUSE has some patches out already, expecting more today.  RedHat
does not have theirs out yet.  Last I heard, they are expected sometime next
week.  I don't know about any of the other distributions that run on Z.  I
haven't heard that they have any patches out yet.

Martha

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Re: Tuning setting in Ubuntu?

[Martha McConaghy]

Thanks, Christian.  Excellent suggestions.  I actually already have Bill
Bitner looking at monitor data from z/VM to get his view on what is going on.
I'll send you more information off-list, its a complicated situation.

Martha

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Tuning setting in Ubuntu?

[Martha McConaghy]

I have a project that is experiencing something interesting.  They are doing
continuous integration builds on zLinux servers using various versions of
Linux, i.e. SLES, RHEL and Ubuntu.  All are running on the same z/VM system
(6.3) and there seems to be plenty of available CPU and memory overall.  The
jobs running on the RHEL and SLES systems run in a reasonable amount of time,
but the ones on the Ubuntu system run more than twice as long.  Some have even
timed out because they didn't finish in the expected CI window.  Meanwhile,
the LPAR and z/VM system are not even breaking a sweat.  All of them have the
same resources, i.e. 8 vcpus, and 16G of memory.

The project folks report seeing a lot of cpu "steals" on the Ubuntu system.
I'm thinking of giving them more vcpus to help out with that.  However, I also
wonder if there is a tuning variable or kernel setting that is different by
default on Ubuntu than on the SLES or RHEL distributions?  The problem seemed
to start back in August, though they have been running these jobs for over a
year.  Perhaps a patch got pushed out that changed some settings?  (I've seen
Ubuntu service do weird things to other servers.)

I don't much about Ubuntu except that I dislike it intensely.  Does anyone
have any suggestions as to what to look at?

Martha

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Re: SHARE Providence

[Martha McConaghy]

Andrew,

Its great to hear that you are interested in coming to SHARE in Providence
this August!  Many of us on this list are volunteers who help put each SHARE
event together (such as Mark and Alan), so it is always good to hear that
people are interested in attending.

We are pulling the schedule for the event together this coming weekend in
fact.  The final agenda will be published online in mid-June.  In the
meantime, I can tell you that there will be a lot of sessions covering
information in the expected IBM announcements early this summer.  The VM and
Linux sessions at SHARE are always strong, even more so this time, IMHO.
There will also be two SHARE Academy sessions on the Sunday before SHARE
starts.  One will be on securing mainframe based systems and will be mainly
z/OS oriented.  The other will be on blockchain and Hyperledger, and will be
LInux oriented.  So, there will be a lot to choose from.  The one thing we can
guarantee at SHARE is that you'll not be bored!  %-)

Keep an eye on the SHARE website, share.org, for when more details get
published.  There will also be mentions about it on this list as well as the
IBMVM list.

Martha McConaghy
System Architect/Technical Lead - Marist College
Director of Operations - SHARE (volunteer)

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Re: Best way to edit Linux files in z/VM 3270

[Martha McConaghy]

I prefer ed, myself.  It reminds me of the old days, before we had full screen
editors.  Screw up enough fstab or network config files and you get real good
at it.  Always
impresses my younger colleages when I can fix a fstab with a few keystrokes,
even on their precious non-z based Linux servers. It also helps to keep a
"cheat sheet" bookmarked for when your stuck.  My go-to page is:

http://linux.about.com/library/cmd/blcmdl1_ed.htm

Martha


On Thu, 22 Sep 2016 13:07:46 -0400 Robert J Brenneman said:
>the /best/ way to edit linux files on 3270 is not to. Plan ahead and make
>backup copies of important config files before making changes and rebooting
>so you can just rename the backup back in place.
>
>but when one must, ed is available. You have to think of it as a typewriter
>though. It is not capable or aware of a terminal that can display multiple
>lines - basically you have a keyboard with no arrow keys, no PF keys, no
>pgup pgdn home end keys to use to talk to ed, and ed is only able to talk
>back to you by spitting out a single line of output at a time with a
>carriage return at the end.
>
>cat / head / tail / sed can also be used to assemble a new file out of an
>existing but broken one.
>
>
>
>--
>Jay Brenneman
>
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Re: Debian install using LVM

[Martha McConaghy]

Mark,

I've been using the installer, so I don't get to see the underlying config
files.  I'll try it again and see if I can get to /etc/zipl.conf.  The
installer doesn't say why it can't write out ZIPL, just that it cannot.  I
tried partitioning /boot and formatting it ext2 (which is the way we do
SLES12), then partitioning the rest of the volume as /.  It doesn't seem to
like that either.

It is at least comforting to know I'm not the only one who has run into this
issue.

Martha

On Mon, 11 Apr 2016 17:25:05 -0600 Mark Post said:
>>>> On 4/11/2016 at 07:00 PM, Martha McConaghy <u...@vm.marist.edu> wrote:
>> I've been fighting with a Debian install all day and wonder if anyone else
>> has run into the same problem. I wanted to use LVM for the root filesystem,
>> so created a /boot partition and an LVM for the rest.  Everything works fine
>> until it comes to the step where it tries to write out ZIPL.  That step
>> fails.
>
>By "that step" do you mean something the installer is doing that you can't tell
>exactly what is happening?  Or is it a command you're running yourself?
>
>> I tried all sorts of combinations, but the only that actually works is
>> creating 1 partition for / with no LVM at all.  Something is not right.
>
>While I don't personally care for this kind of setup, it should be fairly
>straightforward.  /boot needs to be mounted at the time zipl is run.  It needs
>to have a file system of ext*, xfs, reiserfs, etc. on it, not something like
>btrfs.
>
>What do the contents of /etc/zipl.conf look like?  What are the messages you're
>getting back that indicate failure?
>
>
>Mark Post
>
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Re: Debian install using LVM

[Martha McConaghy]

Thanks, Ray.  I thought I was going crazy too!

Martha

On Mon, 11 Apr 2016 21:01:26 -0400 Ray Mansell said:
>Martha...
>
>I've been fighting the same thing all afternoon. Thought I was going
>bonkers, since it all worked so well last week. For the moment I've
>installed without LVM, but there's certainly a problem.
>
>Ray
>
>On 4/11/2016 19:00, Martha McConaghy wrote:
>> I've been fighting with a Debian install all day and wonder if anyone else
>> has run into the same problem. I wanted to use LVM for the root filesystem,
>> so created a /boot partition and an LVM for the rest.  Everything works fine
>> until it comes to the step where it tries to write out ZIPL.  That step
>fails.
>> I tried all sorts of combinations, but the only that actually works is
>> creating 1 partition for / with no LVM at all.  Something is not right.
>>
>> The timestamp on the install files I'm using is April 2, so they are pretty
>> new.  The level of Debian is jessie.
>>
>> Has anyone run into this?
>>
>> Martha
>>
>> Martha McConaghy
>> System Architect/Technical Lead
>> Marist College
>>
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Re: Debian install using LVM

[Martha McConaghy]

If Jessie's installer doesn't accept it, then why is it provided as an option?
Seriously, it makes no sense.

Martha

On Tue, 12 Apr 2016 10:29:58 +0200 Viktor Mihajlovski said:
>On 12.04.2016 01:11, Dimitri John Ledkov wrote:
>> Hello,
>>
>> On 12 April 2016 at 00:00, Martha McConaghy <u...@vm.marist.edu> wrote:
>>> I've been fighting with a Debian install all day and wonder if anyone else
>>> has run into the same problem. I wanted to use LVM for the root filesystem,
>>> so created a /boot partition and an LVM for the rest.  Everything works fine
>>> until it comes to the step where it tries to write out ZIPL.  That step
>fails.
>>> I tried all sorts of combinations, but the only that actually works is
>>> creating 1 partition for / with no LVM at all.  Something is not right.
>>>
>>> The timestamp on the install files I'm using is April 2, so they are pretty
>>> new.  The level of Debian is jessie.
>>>
>>
>> I recommend to try testing aka stretch. There were LVM fixes uploaded
>> there. As usual do attach /var/log/syslog from the d-i to help
>> debugging what's going wrong.
>That is exactly the point, Debian Jessie's installer only accepts the
>root device on a DASD partition. With Stretch, root can be anywhere
>including LVM volumes.
>>
>> Note there is also Debian specific mailing debian-s390:
>> https://lists.debian.org/debian-s390/
>>
>> Regards,
>>
>> Dimitri.
>>
>[...]
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Debian install using LVM

[Martha McConaghy]

I've been fighting with a Debian install all day and wonder if anyone else
has run into the same problem. I wanted to use LVM for the root filesystem,
so created a /boot partition and an LVM for the rest.  Everything works fine
until it comes to the step where it tries to write out ZIPL.  That step fails.
I tried all sorts of combinations, but the only that actually works is
creating 1 partition for / with no LVM at all.  Something is not right.

The timestamp on the install files I'm using is April 2, so they are pretty
new.  The level of Debian is jessie.

Has anyone run into this?

Martha

Martha McConaghy
System Architect/Technical Lead
Marist College

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Looking for Innovative workloads!

[Martha McConaghy]

The next SHARE event is being held in Atlanta, GA July 31-Aug. 5.

We are actively looking for presentations for this event that discuss
experiences with new and innovative workloads being run on z Systems.  This is
especially true for zLinux and z/VM workloads.  So, if you are experimenting
with or running in production new types of workloads, we want to hear from
you!  Whether they are the hot new stuff like docker or blockchain, or a Java
based workload that has been around a couple of years, SHARE is interested in
your experiences, good, bad and ugly.

First time, non-vendor speakers are eligible for a registration fee benefit.

The call for presentations is currently open at:

http://www.share.org/submit-atlanta


Martha McConaghy
Marist: System Architect/Technical Lead
SHARE:  Director of Operations

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Using solid state drives with Linux guests

[Martha McConaghy]

Has anyone had experience using solid state drives (SSD) with a zLinux guest
running under z/VM 6.3?  We recently got a DS8870 that has quite a few SSDs.
However, I haven't done anything with them yet.  I would guess that I just
configure arrays on them like normal disks, make them FB, create a LUN on them
and then connect the LUN to the Linux guest like any SAN LUN.

Is there anything special I should be aware of before jumping in?

Martha

System Architect/Technical Lead
Marist College

SHARE San Antonio - Feb 28-March 4, 2016

Hope to see y'all there!

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Re: Fw: OpenMainframeProject

[Martha McConaghy]

I believe Marist is involved, but through my boss, Harry Williams.  I haven't
been directly involved, but still do support zLinux servers for Linux
Foundation projects.

Martha

On Fri, 11 Dec 2015 20:52:36 -0500 Bryan Foley said:
>The Open Mainframe Project is a project set up by the Linux Foundation to
>promote and grow the capabilities of Linux meeting current and future
>demands of the digital economy.  It is intended to bring together clients -
>who are looking to marry the openness and agility of the open world, with
>the enterprise-grade capabilities of a server that can meet those demands
>like z Systems and LinuxONE - with vendors and academia to deliver upon the
>requirements needed to drive forward the state of the art.
>
>Steven Dickens (steven.dick...@us.ibm.com) has led this initiative for IBM
>(one of many members), and can provide more information.  It would be great
>for the members on this mailing list to be part of this initiative.
>
>
>Bryan Foley
>Program Director, z Systems Strategy & Linux for z Systems Business Line
>Manager
>Internet:   fol...@us.ibm.com
>Tieline: 293-5955/External: (845) 433-5955
>
>
>
>
>- Forwarded by Bryan Foley/Poughkeepsie/IBM on 12/11/2015 20:44 -
>
>From:   John Campbell 
>To: LINUX-390@VM.MARIST.EDU
>Date:   12/11/2015 20:24
>Subject:Re: OpenMainframeProject
>Sent by:Linux on 390 Port 
>
>
>
>Open Mainframe?  News to me.
>
>Mainframes require three criteria:
>
>1) Maximum *reliable* single-thread performance (see the "Linux on S/390"
>redbook "Appendix A" for how reliability is tricked out);
>2) Maximum I/O throughput; and
>3) Maximum I/O connectivity.
>
>Admittedly, criterion 3 is kind of undercut by SAN technology.
>
>Additionally, the instruction set need not mimic the zSeries to be a
>mainframe.  We already know that handling memory access faults in IBM's SS
>instructions for virtual machine functionality that much harder to pull
>off...
>
>Now you've all just added to my reading list.
>
>(laughs maniacally)
>
>"You are the MS-DOS of Evil...   Only 640K... Not EVIL Enough!"
>
>-soup
>
>On Fri, Dec 11, 2015 at 6:39 PM, Christer Solskogen <
>christer.solsko...@gmail.com> wrote:
>
>> I haven't seen that been discussed here. Are any of you guys involved
>> somehow?
>>
>> --
>> chs
>>
>> --
>> For LINUX-390 subscribe / signoff / archive access instructions,
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>> For more information on Linux on System z, visit
>> http://wiki.linuxvm.org/
>>
>
>
>
>--
>John R. Campbell Speaker to Machines  souperb at gmail dot
>com
>MacOS X proved it was easier to make Unix user-friendly than to fix Windows
>"It doesn't matter how well-crafted a system is to eliminate errors;
>Regardless
> of any and all checks and balances in place, all systems will fail
>because,
> somewhere, there is meat in the loop." - me
>
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>
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Re: Advice on doing RHEL 7 LPAR install

[Martha McConaghy]

Actually, I did do a VM install to get a running RHEL 7 system they could play
with.  However, the project they are working on involves adapting software
that currently runs in an appliance to be installed into an LPAR.  Its been
tough because these guys have next to no Linux skills at all.  So, besides
giving them a running RHEL 7 system to play with, myself and a colleague have
been trying to educate them on how LPARs and HMCs work in general.

Ultimately, they are going to need to develop their own installer that won't
have to depend on an outside source for Linux.  But, since they don't
understand how to do a traditional install, we were starting with that. I
think the light is finallying beginning to dawn on them that a z doesn't work
like an Intel pizza box.  sigh...

Well, at least I have learned more about RHEL than I knew before.  Just wish
I didn't have so many other projects going on that this is delaying.

Martha


On Thu, 17 Sep 2015 14:40:15 -0400 Rick Troth said:
>On 09/15/2015 03:38 PM, Martha McConaghy wrote:
>> We've got some folks from outside the school working on a project in our
>> lab.  They want to do an RHEL 7 LPAR install,   ...
>
>Forgive me if I'm harping on the wrong point. I really just want to see
>all parties happy.
>
>Do they need to perform an LPAR installation or do they simply need the
>result in LPAR?
>If the latter, then clearly using VM for the install step makes more sense.
>(Not to say successful execution of LPAR mode install isn't interesting.)
>
>Call it "V to P". Works.
>
>-- R; <><
>
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Re: Advice on doing RHEL 7 LPAR install

[Martha McConaghy]

Jan,

Thanks for that info.  I've been going by some older docs, so will look
into this one more closely.  I'm not sure what level is on the DVD they
have been using, but will check on it.  I'll bet a dollar that its 7.0.  They
know nearly nothing about Linux and want me to guide them.  However, never
having done an LPAR install, and not being very familiar with RHEL, its
been difficult.  This may be the piece of info we needed to get past this.

Martha

On Wed, 16 Sep 2015 13:05:27 +0200 Jan Stodola said:
>Martha,
>When you start the installation from DVD, you should see a prompt early
>at the beginning of the installation asking for additional parameters.
>That's the time to enter the path to your installation repository and
>network configuration parameters. More information and examples can be
>found at the following URL:
>
>https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7-Beta/h
>0
>
>Note that this prompt is not available in RHEL-7.0, you need RHEL-7.1
>DVD or later.
>
>Regards,
>Jan
>
>
>On 09/15/2015 09:38 PM, Martha McConaghy wrote:
>> We've got some folks from outside the school working on a project in our
>> lab.  They want to do an RHEL 7 LPAR install, but are running into problems.
>> I've never done a Linux install in an LPAR, always using virtual machines. So
>> I can't really advise them.
>>
>> They want to be able to boot the starter system off the HMC's DVD and then do
>> the install from a system holding the ISO images (either FTP or NFS).  They
>> have been able to boot the starter system into the LPAR.  However, it falls
>> into the dreaded safe mode because it cannot find /dev/root.  I had this
>> trouble when I was doing a practice install in a virtual machine and found
>> that I had a typo in my REDHAT PRM file.  However, in this case, they don't
>> have a customized PRM file at all. They just have a bootable DVD.
>>
>> So, is there a way to do this?  Build a RHEL 7 install DVD that just boots
>> into the LPAR and is already customized to do the install?
>>
>> Please pardon me if that sounds like an ignorant question.  I've looked for
>> any redbooks that might cover this, but wasn't able to find any and these guy
>> won't do any research on their ownsigh
>>
>> Martha
>>
>> --
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>> http://wiki.linuxvm.org/
>
>
>--
>Jan Stodola
>Quality Assurance Engineer
>
>Red Hat Czech s.r.o., Purkynova 99/71, 612 45  Brno, Czech Republic
>Email: jstod...@redhat.com
>
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Advice on doing RHEL 7 LPAR install

[Martha McConaghy]

We've got some folks from outside the school working on a project in our
lab.  They want to do an RHEL 7 LPAR install, but are running into problems.
I've never done a Linux install in an LPAR, always using virtual machines. So,
I can't really advise them.

They want to be able to boot the starter system off the HMC's DVD and then do
the install from a system holding the ISO images (either FTP or NFS).  They
have been able to boot the starter system into the LPAR.  However, it falls
into the dreaded safe mode because it cannot find /dev/root.  I had this
trouble when I was doing a practice install in a virtual machine and found
that I had a typo in my REDHAT PRM file.  However, in this case, they don't
have a customized PRM file at all. They just have a bootable DVD.

So, is there a way to do this?  Build a RHEL 7 install DVD that just boots
into the LPAR and is already customized to do the install?

Please pardon me if that sounds like an ignorant question.  I've looked for
any redbooks that might cover this, but wasn't able to find any and these guys
won't do any research on their ownsigh

Martha

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Re: Using OSA port 1 in LPAR

[Martha McConaghy]

Trying to figure this out with RHEL 7 only makes me miss SLES more!

Martha

On Tue, 8 Sep 2015 10:20:29 -0600 Mark Post said:
>qeth_configure is a SUSE-specific script.
>
>Mark PostMarcy Cortes  wrote:
 "Marcy Cortes"  09/08/2015 09:08 >>>
>qeth_configure
>
>Or use Yast2 in SUSE.   Can't speak to RH.
>
>Usage: /sbin/qeth_configure [options]   
>
>-i Configure IP takeover
>-l Configure Layer2 support
>-f force creation of udev rules, do not check values in /sys
>-t Valid cardtypes are: qeth, hsi, osn
>-o General QETH options, separated by spaces
>-n QETH port number to use, 0 or 1. Only needed for real, not virtual
>devices.
>-p QETH Portname to use. Only needed if sharing a real OSA with z/OS.
>read/write/data chan = x.y. where
>  x is always 0 until IBM creates something
>that
>uses that number
>  y is the logical channel subsystem (lcss)
>number. Most often this is 0, but it could be non-zero
>   is the four digit subchannel address of
>the device, in hexidecimal, with leading zeros.
>online = 0 to take the device offline
> 1 to bring the device online
>
>
>
>
>-Original Message-
>From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Alan
>Altmark
>Sent: Tuesday, September 08, 2015 7:51 AM
>To: LINUX-390@VM.MARIST.EDU
>Subject: Re: [LINUX-390] Using OSA port 1 in LPAR
>
>On Saturday, 09/05/2015 at 07:23 EDT, Ronald van der Laan 
>wrote:
>> Just configure a second eth device on another triplet on the same chpid.
>> Then in the udev rule, you find the portno parameter.
>>
>> ACTION=="add", SUBSYSTEM=="ccwgroup", KERNEL=="0.0.",
>ATTR{portno}="1"
>
>Isn't there a sysconfig or whatever configuration option to do that?  IMO,
>humans shouldn't be updating the udev rules file.
>
>Alan Altmark
>
>Senior Managing z/VM and Linux Consultant Lab Services System z Delivery
>Practice IBM Systems & Technology Group ibm.com/systems/services/labservices
>office: 607.429.3323
>mobile; 607.321.7556
>alan_altm...@us.ibm.com
>IBM Endicott
>
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>
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Using OSA port 1 in LPAR

[Martha McConaghy]

I'm working on a project that requires RHEL 7 running in an LPAR.  I've never
done Linux in an LPAR, always on top of z/VM, so its a new experience...ugh..

We've got it running finally and need to configure a 2nd network connection.
The OSA that is available for use is on port 1 of the OSA card.  Under z/VM,
that would not be an issue as you add "p1" to the address when defining the
vswitch, etc.  However, I can't tell how to tell Linux that the device is on
port 1.  To make matters more complicated, the other port is already being
used by this system for its main connection.  So, basically, I need to use
both port 0 and 1 on the OSA for different network connections.

I've been looking at znetconf, but it doesn't seen to see any port
distinctions and only sees the device addresses.  Can someone point me in the
right direction?

Martha

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Re: Ubuntu on z?

[Martha McConaghy]

That's one of the articles I saw, written in 2011.  I can't see whatever
comment may have been made, the page is not displaying it.

Sounds like it was never consumated.

Martha



On Mon, 6 Apr 2015 12:50:14 -0500 Ron Wells said:
http://www.unixmen.com/will-ubuntu-make-to-mainframes/#comments



From:   Rick Troth r...@casita.net
To: LINUX-390@VM.MARIST.EDU
Date:   04/06/2015 12:12 PM
Subject:Re: Ubuntu on z?
Sent by:Linux on 390 Port LINUX-390@VM.MARIST.EDU



On 04/06/2015 12:48 PM, Martha McConaghy wrote:
 We have an upcoming project that may need Ubuntu running on z/VM.  I
have
 never heard of Ubuntu being supported on z before, so did some googling.
 It
 looks like there was talk of it back in 2011, but I can't find anything
later
 than that.

Ubuntu is a little different than the other distros because Canonical
has different incentives than the other distributors.
In this case, you might want to phone them so they know there is a
business opportunity.


 Did anything ever come of this?  Has anyone come up with a version of
Ubuntu
 that will run on z?

It's a Debian derivative (as, for example, CentOS and ClefOS are a
RedHat derivatives) and that *does* run on z Systems.
If you happen to have Debian for z Systems then your upcoming project
probably could be made to fit there with little difficulty.

-- R; 

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Ubuntu on z?

[Martha McConaghy]

We have an upcoming project that may need Ubuntu running on z/VM.  I have
never heard of Ubuntu being supported on z before, so did some googling.  It
looks like there was talk of it back in 2011, but I can't find anything later
than that.

Did anything ever come of this?  Has anyone come up with a version of Ubuntu
that will run on z?

Martha

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Re: Network Time Protocol Daemon needed for zLinux?

[Martha McConaghy]

We do the same thing, but for a different reason.  We want all of our Linux
servers to be coordinated to the same time, no matter what platform they are
running on.  Makes syslog processing easier.

Martha



On Wed, 18 Mar 2015 20:57:02 + Marcy Cortes said:
We run NTP on all the Linux guests under zVM (and we have STP for VM).
There were just too many things that require it and it wasn't worth the effort
to make them believe that it wasn't necessary.

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Vitale,
Joseph
Sent: Wednesday, March 18, 2015 1:00 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: [LINUX-390] Network Time Protocol Daemon needed for zLinux?

Using  STP to set clock for zVM LPAR.  zVM and zLinux guest show time, both in
sync.  Trying to avoid setting up NTPD and starting on all zLinux if not
necessary.

Came about due to checks comparing zLinux software configuration vs  X86
configuration, they run NTPD. So, I was asked to do same.  Never seen an issue
with time under zLinux.


Thank you for your assistance
Joe


Joseph Vitale
Technology Services Group
Mainframe Operating Systems

Pershing Plaza
95 Christopher Columbus Drive
Floor 14
Jersey City,  N.J.  07302
Work  201-395-1509
Cell917-903-0102


-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Rob van
der Heij
Sent: Wednesday, March 18, 2015 3:54 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Network Time Protocol Daemon needed for zLinux?

On 18 March 2015 at 20:04, Vitale, Joseph joseph.vit...@bnymellon.com
wrote:


 My Linux runs under zVM, not in a stand alone LPAR.  So, NTP or STP
 not required, correct ?


That depends on whether you have STP steer the clock for the LPARs. It's a
priced feature. If Q TIME on z/VM is now very accurate, then you're most likely
steering and your Linux guests will follow. When z/VM is not running on time,
then all Linux guests will get a clock (the same) that is slightly off as well.
If that bothers you (your applications rather) then you can either implement
STP
or have each guest synchronize it's won clock with ntpd etc. If you frequently
reboot, then ntpdate during startup might be enough to stay somewhat on time
(eg
3 seconds per week). Some things like Kerberos expect you to be sort-of on time
(10's of seconds, iirc).

My experience is that the quality of the clock with ntpd is somewhat less, but
that's a moot point when it's your only option. Yes, it's true that running
ntpd
takes resources. But much middleware does too and we're not on
G3 anymore.

PS Yes, I did do an ntpq for CMS a while back, but the year does not have
nearly enough Friday nights to come up with an alternative for STP.

Rob

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Mirroring and recovering LVM volumes

[Martha McConaghy]

We are working on trying out some new HA and/or recovery techniques with SLES
11 SP3 and our new SVC hardware.  One thing that I would like to try is
setting up mirroring via the SVC of a LUN that has mysql data on it.  This
LUN is dedicated to a SLES 11 SP3 server on our z114, but it is also part of
a logical volume.  (Right now, its a 1 physical volume LVM.)

Setting up the mirroring is not a problem.  My question is more related to
recovery.  I don't know a lot about how LVM works.  How much about the volume
is stored on the LUN itself and how much is stored elsewhere in the opsys
filesystem?  If we have a recovery server pointed to the mirrored volume, will
it see the LVM metadata?

Any hints/tips on mirroring LVM volumes?  Or, should we stay away from LVM
for anything we want to mirror?

Martha

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Re: Thoughts on multiple certificates for Apache host

[Martha McConaghy]

Mauro,

Thanks for the info on SNI.  Russ Herrold also mentioned it last week and
that appears to be exactly what we were looking for.  I just received
confirmation from my colleague (I had forwarded Russ' email to him) that he
now has it working, without having to mess with IPs!


I appreciate the advice, Russ!

Martha

On Mon, 2 Dec 2013 12:37:13 -0200 Mauro Souza said:
There's a feature on Apache names SNI (Server Name Indication). It's
supported on almost all modern browsers, so you can set it up and almost
nobody will complain.

You can see the complete explanation along with examples at
http://wiki.apache.org/httpd/NameBasedSSLVHostsWithSNI

This way you can host all servers on the same Apache, with the same IP
address, and have different certificates for each. I never tested this
setup, but I think it will work.

Mauro
http://mauro.limeiratem.com - registered Linux User: 294521
Scripture is both history, and a love letter from God.


2013/12/2 Veencamp, Jonathon D. jdveenc...@fedins.com

 I think it's called IP aliasing or something like that.  We have a single
 NIC advertising a bunch of IP addresses, and have a different apache
 listener on each one.

 We do that via this command in a system startup script on Suse Linux.
 ip address add 192.168.69.60/24 brd + dev eth0 label eth0:60

 And then ifconfig to list the network addresses shows this:

 lnx-dhttp:~ # ifconfig
 eth0  Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.34  Bcast:161.250.69.255  Mask:255.255.255.0
   inet6 addr: fe80::200:300:100:5/64 Scope:Link
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
   RX packets:51739450 errors:0 dropped:0 overruns:0 frame:0
   TX packets:51033519 errors:0 dropped:0 overruns:0 carrier:0
   collisions:0 txqueuelen:1000
   RX bytes:25357355357 (24182.6 Mb)  TX bytes:28616518230 (27290.8
 Mb)

 eth0:60   Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.60  Bcast:161.250.69.255  Mask:255.255.255.0
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1

 eth0:61   Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.61  Bcast:161.250.69.255  Mask:255.255.255.0
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1

 eth0:62   Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.62  Bcast:161.250.69.255  Mask:255.255.255.0
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1

 eth0:63   Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.63  Bcast:161.250.69.255  Mask:255.255.255.0
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1

 eth0:64   Link encap:Ethernet  HWaddr 02:00:03:00:00:05
   inet addr:192.168.69.64  Bcast:161.250.69.255  Mask:255.255.255.0
   UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1

 And then start all the different apache's with something like this:
 /opt/local/HTTPServer/bin/apachectl -f conf/httpd.eth061.conf -k start -D
 eth061
 /opt/local/HTTPServer/bin/apachectl -f conf/httpd.eth062.conf -k start -D
 eth062
 /opt/local/HTTPServer/bin/apachectl -f conf/httpd.eth063.conf -k start -D
 eth063
 /opt/local/HTTPServer/bin/apachectl -f conf/httpd.eth064.conf -k start -D
 eth064

 And I'm reasonably sure when I created the certificates for these, I added
 the various IP addresses  DNS hostnames for them to the extension aliases
 field, and one certificate covered all of them.

 Jon Veencamp


 -Original Message-
 From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of
 Marcy Cortes
 Sent: Friday, November 29, 2013 12:38 PM
 To: LINUX-390@VM.MARIST.EDU
 Subject: Re: Thoughts on multiple certificates for Apache host

 Martha wrote:
  For example, could we host multiple IPs from the same NIC if the
  server is on a layer 2 vswitch?  (Will it do trunking, basically?)  Is
  there an easier way to approach this?

 If you haven't already figured this out (and hopefully you've been off
 eating turkey and pumpkin pie instead of having to configure IP
 addresses...)

 This is very simple with yast2 on SuSE.

 Just go into Yast2
 Click Network Devices
 Select the current one and click Edit
 Go down to the Additional Addresses section
 Click Add
 Name it (vip0 or whatever you'd like)
 put in the IP and Netmask

 Et voila!   Immediately usable and visible in ifconfig.

 (It basically just adds a couple of lines to the eth0 device (or whatever
 device yours is called)  in /etc/sysconfig/network and does whatever is
 needed to dynamically activate it.

 Marcy

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Thoughts on multiple certificates for Apache host

[Martha McConaghy]

Certs for securing connections have always been a black art to me.  So, I
have a feeling that a few of you on this list will probably have some good
ideas for us.

We run a lot of Apache web servers on zLinux (SLES 11 mainly).  Several are
general use web servers, i.e. we have a lot of little web sites running as
vhosts on one virtual server.  They all share the same IP address and Apache
sorts out who is who on the incoming transaction based on the URL requested.

Now, from what little I understand of certs, there can be only 1 per IP
address.  So, if we get cert for the general use web server, it will apply to
all vhosts on that server.  If we want individual certs for each vhost, we
would have to supply an IP/NIC for each.  Do I have that correct?  If so,
any ideas on how to get around that?

For example, could we host multiple IPs from the same NIC if the server is
on a layer 2 vswitch?  (Will it do trunking, basically?)  Is there an easier
way to approach this?

Martha

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Re: Multipath/zFCP problem

[Martha McConaghy]

Martin,

Don't worry about it.  It was another DUH moment.  As soon as I put the
correct LUN ID in, zFCP worked fine.  I was working through Yast, which is
not big on explaining why something didn't work or even giving you an error
message.  But it isn't a big deal, I should have seen the problem.  I was
concentrating more on training my colleague (looking over his shoulder) than
on what I was doing.

Martha

On Wed, 20 Nov 2013 18:54:59 +0100 Martin Peschke said:
On Wed, 2013-11-20 at 11:57 -0500, Martha McConaghy wrote:
 Rick,

 We already did the zoning, etc.  (I can do that stuff in my sleep now.)  I'm
 training someone as my backup, so he needed the practice.

 However, I agree that using the same devices for both LUNs would be good,
 especially since one of the LUNs is not very busy.  I just could not get
 zFCP to let me do it.  The two original devices are 2000 and 3000.  I tried
 to define LUN 1 on them in addition to LUN 0.  It just won't take.  Is there

Martha,
could you provide some details? Actual command line, error messages?
Do you use zfcp_disk_configure?

Thanks,
Martin


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Multipath/zFCP problem

[Martha McConaghy]

I've run into an annoying problem and hope someone can point me in the right
direction.  Its probably a wrong config parm somewhere, but I'm just not
seeing it.

I have a SLES 11 SP1 server running under z/VM.  It already has 1 SAN LUN
attached to it via direct connections and NPIV.  zFCP and multipathd are
already in place and it works fine.  I'm adding a 2nd LUN to the server, from
the same storage host.  At first, I assumed that I should add 2 new paths to
the server for the new LUN, which is what I did.  The original 2 vdevices
are 2000 and 3000.  So, I added 2100 and 3100 and connected them to two new
rdevs on the VM side, as usual.  The LUN was created on the storage host,
mapped to server and SAN zones created.  All good.

Now, I defined the zFCP configs for 2100 and 3100 and mapped them to LUN 1.
2000 and 3000 are still mapped to LUN 0.  Things look OK.

lxfdrwb2:/etc # lszfcp -D
0.0.2000/0x500507680130eda4/0x 1:0:2:0
0.0.3000/0x500507680140ed9c/0x 0:0:7:0
0.0.2100/0x500507680120eda4/0x0001 2:0:3:0
0.0.3100/0x500507680110ed9c/0x0001 3:0:2:0

However, multipathd continues to ONLY see the original 3.9TB LUN.  It seems
to interpret the changes as 4 paths to LUN 0, instead of 2 paths to LUN 0 and
2 paths to LUN 1.

lxfdrwb2:/etc # multipath -ll
3600507680180876ce029 dm-0 IBM,2145
size=3.9T features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 0:0:7:0   sda   8:0   active ready running
| `- 3:0:2:0   sdd   8:48  active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
  |- 1:0:2:0   sdb   8:16  active ready running
  `- 2:0:3:0   sdc   8:32  active ready running

I've tried flushing the multipath map.  I've even deleted the original zFCP
configuration and rebuilding it.  Nothing seems to help.  It also occurred to
me that I might use the original 2 paths (2000 and 3000) to also connect to
LUN 1, but zFCP will have none of that.

I suspect that there is a multipath or zfcp parameter that I have wrong, but
Googling around hasn't yielded any answers yet.  I'm sure others have done
this, can you steer me in the right direction?  I do this all the time with
Edev disks, but not as much for direct attaches.

Martha

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Re: Multipath/zFCP problem

[Martha McConaghy]

Michael,

DOH!  Of course, that is exactly the problem.  I was so fixated on the
complicated stuff that I missed the obvious.  Thanks for pointing it out.  I
changed the LUN ID and it works fine now.

Martha

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Re: Multipath/zFCP problem

[Martha McConaghy]

Rick,

We already did the zoning, etc.  (I can do that stuff in my sleep now.)  I'm
training someone as my backup, so he needed the practice.

However, I agree that using the same devices for both LUNs would be good,
especially since one of the LUNs is not very busy.  I just could not get
zFCP to let me do it.  The two original devices are 2000 and 3000.  I tried
to define LUN 1 on them in addition to LUN 0.  It just won't take.  Is there
some parm I need to set instead of the defaults to make it work?

Martha


On Wed, 20 Nov 2013 11:55:57 -0500 Richard Troth said:
I recommend that you use the same FCP adapters for the new LUN. That
way, your (NPIV or not) WWPNs for the guest are unique to that guest
regardless how many LUNs it gets. If you add another set of FCP
adapters for each LUN, then you'll have to zone and mask each new LUN
to a different set of WWPNs ... even though they're intended for the
same guest client.

In this case, you need to be sure you brought the new FCPs online to
Linux. (Maybe you already did and I missed that. Sorry.)






On Wed, Nov 20, 2013 at 11:15 AM, Martha McConaghy u...@vm.marist.edu wrote:
 I've run into an annoying problem and hope someone can point me in the right
 direction.  Its probably a wrong config parm somewhere, but I'm just not
 seeing it.

 I have a SLES 11 SP1 server running under z/VM.  It already has 1 SAN LUN
 attached to it via direct connections and NPIV.  zFCP and multipathd are
 already in place and it works fine.  I'm adding a 2nd LUN to the server, from
 the same storage host.  At first, I assumed that I should add 2 new paths to
 the server for the new LUN, which is what I did.  The original 2 vdevices
 are 2000 and 3000.  So, I added 2100 and 3100 and connected them to two new
 rdevs on the VM side, as usual.  The LUN was created on the storage host,
 mapped to server and SAN zones created.  All good.

 Now, I defined the zFCP configs for 2100 and 3100 and mapped them to LUN 1.
 2000 and 3000 are still mapped to LUN 0.  Things look OK.

 lxfdrwb2:/etc # lszfcp -D
 0.0.2000/0x500507680130eda4/0x 1:0:2:0
 0.0.3000/0x500507680140ed9c/0x 0:0:7:0
 0.0.2100/0x500507680120eda4/0x0001 2:0:3:0
 0.0.3100/0x500507680110ed9c/0x0001 3:0:2:0

 However, multipathd continues to ONLY see the original 3.9TB LUN.  It seems
 to interpret the changes as 4 paths to LUN 0, instead of 2 paths to LUN 0 and
 2 paths to LUN 1.

 lxfdrwb2:/etc # multipath -ll
 3600507680180876ce029 dm-0 IBM,2145
 size=3.9T features='1 queue_if_no_path' hwhandler='0' wp=rw
 |-+- policy='round-robin 0' prio=50 status=active
 | |- 0:0:7:0   sda   8:0   active ready running
 | `- 3:0:2:0   sdd   8:48  active ready running
 `-+- policy='round-robin 0' prio=10 status=enabled
   |- 1:0:2:0   sdb   8:16  active ready running
   `- 2:0:3:0   sdc   8:32  active ready running

 I've tried flushing the multipath map.  I've even deleted the original zFCP
 configuration and rebuilding it.  Nothing seems to help.  It also occurred to
 me that I might use the original 2 paths (2000 and 3000) to also connect to
 LUN 1, but zFCP will have none of that.

 I suspect that there is a multipath or zfcp parameter that I have wrong, but
 Googling around hasn't yielded any answers yet.  I'm sure others have done
 this, can you steer me in the right direction?  I do this all the time with
 Edev disks, but not as much for direct attaches.

 Martha

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--
-- R;
Rick Troth
Velocity Software
http://www.velocitysoftware.com/

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Re: Advice on TomCat and portal tuning

[Martha McConaghy]

Thanks Mark.  We actually have moved to SP3 for all of our new servers.  This
one just happens to be old enough to have been created with SP1.  We plan on
upgrading it but don't want to change too many things at once.

Martha



On Tue, 3 Sep 2013 13:23:32 -0600 Mark Post said:
 On 9/3/2013 at 01:35 PM, Martha McConaghy u...@vm.marist.edu wrote:
 We have embarked on a project to support our main student/faculty/staff
 portal
 on zLinux.  It works fine under a normal workload, but falls over badly when
 under a heavy load such as during class add/drop. The portal is running open
 source software named LifeRay on top of TomCat on SLES 11 SP1.

I can't really help you with your main question on tuning, but I can tell you
that there were significant performance improvements in SLES11 SP2 over SP1,
and
likely some more in SP3 over SP2.  Since SP1 has been out of support for 12
months now, and SP2 will be out of support December 31, you really should be
looking at SP3 for this project.


Mark Post

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Re: Advice on TomCat and portal tuning

[Martha McConaghy]

Thanks Aria.  We will contact you off list.  Its probably better if our
applications person describes the problem rather than me.  In general, once
it gets up to a certain load of users, response goes into the crapper and the
virtual server starts chewing up CPU.  However, Brian can give you more
detailed information from the application point of view.

Thanks everyone for your comments and tips.  We are still in the data
gathering phase right now, in addition to trying to recreate the problem
(without needing 1000 students hitting the server that is).  I'll post more
specific information when I have it.  We are definitely looking at it from all
angles including real resources, z/VM, Linux, etc.  We want to take a
systematic approach to evaluating the problem and making changes. I'm sure you
all know as well as I that it is likely not one magic bullet that fixes all,
but a whole series of tweaks.

Martha


On Wed, 4 Sep 2013 09:12:03 -0400 Aria Bamdad said:
Martha,

We have been using a supported version of Liferay (Liferay EE) for over 2
years now and have not had any problems.  Currently we are on IBM JRE 1.7
and 1.6 on a dev server.  We use tomcat as provided by  SLES 11 SP2 and SP3.
When you say 'falls over badly', can you elaborate as to what the actual
problem is?

By the way, I can safely say that few other vendors come close to the type
of support Liferay provides if you sign up for a support contract, both in
terms of speed and knowledge.  We have been very happy with them fixing bugs
quickly and providing patches sometimes within days.

Feel free to contact me off list if you like.

Aria

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Martha
McConaghy
Sent: Tuesday, September 03, 2013 1:35 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Advice on TomCat and portal tuning

We have embarked on a project to support our main student/faculty/staff
portal
on zLinux.  It works fine under a normal workload, but falls over badly when
under a heavy load such as during class add/drop. The portal is running open
source software named LifeRay on top of TomCat on SLES 11 SP1.

We know there is a lot of tuning that needs to be done, but there are a ton
of
variables to consider.  If anyone on the list has any experience tuning this
sort of environment, i.e. Java without Websphere, we would love to talk with
you.  Please drop me a note.

Martha McConaghy
System Architect/Technical Lead
Marist College

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Advice on TomCat and portal tuning

[Martha McConaghy]

We have embarked on a project to support our main student/faculty/staff portal
on zLinux.  It works fine under a normal workload, but falls over badly when
under a heavy load such as during class add/drop. The portal is running open
source software named LifeRay on top of TomCat on SLES 11 SP1.

We know there is a lot of tuning that needs to be done, but there are a ton of
variables to consider.  If anyone on the list has any experience tuning this
sort of environment, i.e. Java without Websphere, we would love to talk with
you.  Please drop me a note.

Martha McConaghy
System Architect/Technical Lead
Marist College

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Business Continuance call for presentations

[Martha McConaghy]

In conjunction with the summer conference (Aug. 11-16), SHARE would like to
put on a 1 day symposium on managing business continuance during natural
emergencies or disasters.  All of us are involved in planning for disasters and
other emergencies.  All that planning and testing is done with the hopes that
it never actually has to be put into action.  So, what happens when the real
thing occurs?

During the past year, the north east part of the US has experienced a super
storm, and a blizzard that affected many major corporations as well as small
businesses.  Other parts of the country have also experienced major weather
events as well as earthquakes, etc.

The focus of the symposium will be application of disaster and business
continuance plans during a real emergency.  We are especially looking for
experiences from different types of industries, i.e. health, education,
financial, etc.  It does not have to be limited to mainframe technology.

Please pass this message on to anyone in your organization who might be
interested in taking part in this symposium.  Presentation proposals can be
submitted through the normal SHARE CFP process at http://www.share.org/ under
either General Submissions or Enterprise Data Center.

Martha McConaghy
Deputy Director of Operations
SHARE, Inc.

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Happy 40th birthday to VM

[Martha McConaghy]

Last night, at SHARE, we celebrated the 40th birthday of VM (the
anniversary of its product announcement).  A great time was had by all,
including a spirited game of VM Jeopardy hosted by Neale Ferguson
and the induction of the 2012 group of Knights of VM.

We were also happy to welcome a number of old friends to join the celebration.

You can see pictures of the party at:

https://www.facebook.com/media/set/?
set=a.3096543912251.103759.1823703339type=3l=0798644daf

(Sorry, the URL doesn't fit on one line in my email program.)

The full presentation of the Knights of VM has been uploaded to the SHARE
proceedings and should be available later today.

Martha

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Voting for 2012 Knights of VM

[Martha McConaghy]

The voting continues until noon tomorrow (Wed).  If you are a member
of the Knights of VM, and you wish to participate in the voting
contact me directly at martha.mccona...@marist.edu.

Martha

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Volunteers for customer panel

[Martha McConaghy]

As you all know, SHARE is coming in early August in Anaheim, CA.

I am hosting a Linux and System z customer experience panel on Thursday
Aug. 9 at 11am and I am looking for some volunteers to serve on the panel.
Its very easy, no heavy lifting is required.  You just sit in the front of the
room with a smile on your face and talk a bit about how your company uses
Linux, z/VM and System z.  Nothing has to be prepared, no fancy powerpoints
and stuff.  Just a chat with your peers.  Everyone who has done this before
has survived and even had some fun in the process.

If you will be at SHARE and would like to be part of our panel, please
contact me directly at martha.mccona...@marist.edu.

Martha

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Attention all Knights of VM

[Martha McConaghy]

If you have not been part of our discussion on LinkedIn and you would like
to participate in our survey, please contact me directly at

martha.mccona...@marist.edu

Please, this is only open to Knights.

Martha

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Re: Linux router

[Martha McConaghy]

Alan,

Thanks for the tip. I was able to at last get this working with a VM TCPIP
machine for now.  I will continue to see if I can get it working with Linux
too.  Unfortunately, layer 2 isn't possible on our network right now.  The
Cisco switches are too old.

Martha

On Sun, 15 Apr 2012 09:28:20 -0400 Alan Altmark said:
On Friday, 04/13/2012 at 03:07 EDT, Martha McConaghy u...@vm.marist.edu
wrote:
 However, when we try to ping the adapter on the far side of the router
from
 the network, the packets make it as far as the OSA and then drop.  Our
TCPIP
 routing guru, Alan Altmark, reminded me that the PRIROUTER setting has
to be
 turned on in the vswitch for the OSA to recognize that it will be
routing
 other traffic through it.  I've got that set now, but am still seeing
the
 problem.

 If this were a VM TCPIP machine, I would have to also set PRIROUTER on
the
 DEVICE statement to get this to work (I'm tempted to switch over to this
if I
 can't get it working).  Is there an equivelent setting for qeth?  I've
been
 googling around, but haven't found anything.

Yes.  Look for primary_router in the Linux Device Driver book.

# echo primary_router  /sys/bus/ccwgroup/drivers/qeth/0.0.addr/route4
(Similarly for route6.)

Sorry I forgot to remind you of the need for primary router status in the
guest, too.  This is why I don't like Layer 3 OSA.  Too much to remember.
:-)

Since each guest has its own dedicated virtual NIC, all guests can have
primary_router status, but keep in mind that that all incoming packets
with unrecognized (by CP) destinations IPs are copied to all guests with
primary or active secondary router status.  (The VSWITCH doesn't have
learning mode and doesn't maintaing a forwarding database.)

Alan Altmark

Senior Managing z/VM and Linux Consultant
IBM System Lab Services and Training
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott

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Linux router

[Martha McConaghy]

I've been working on setting up a zLinux (SLES 11) system to act as a router
between two networks (its on an ensemble, but that doesn't really matter at
the moment).  Everything is set up within Linux (yes, I have IP routing turned
on) and the real network has been updated to have a static route to this
system.  Pings are successful to the main IP address on the adapter (on a
vswitch connected to a 1000BaseT OSA).  Pings are also successful from the
other adapter as well.

However, when we try to ping the adapter on the far side of the router from
the network, the packets make it as far as the OSA and then drop.  Our TCPIP
routing guru, Alan Altmark, reminded me that the PRIROUTER setting has to be
turned on in the vswitch for the OSA to recognize that it will be routing
other traffic through it.  I've got that set now, but am still seeing the
problem.

If this were a VM TCPIP machine, I would have to also set PRIROUTER on the
DEVICE statement to get this to work (I'm tempted to switch over to this if I
can't get it working).  Is there an equivelent setting for qeth?  I've been
googling around, but haven't found anything.

Martha

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Looking for a few good stories...

[Martha McConaghy]

Once again, we are in the midst of putting together a slate of speakers and
presentations for the upcoming SHARE conference this summer in Anaheim, CA
USA.  (Please see http://share.org for details.)

One thing that we have learned is that people really want to hear from other
folks like themselves, not just the technical experts and marketing suits
you usually find at most conferences.  Everyone on the IBMVM and LINUX-390
lists have worked with System z, z/VM and Linux.  Everyone has a story to tell
about their experiences (both good and bad).  Well, there are a lot of people
who want to hear that story.

Please consider presenting an experience session at the upcoming SHARE
conference.  There is no need to fear public speaking, etc. when you are at
SHARE.  The audiences are friendly, and might even buy you a beverage after you
are done.

The call for presentations is now open on the share.org web site until 4/13.
You can submit a proposed presentation even if you don't have a complete title
or abstract yet. We will be happy to work with you to build one.

If you have questions, you can contact any of the following people:

Martha McConaghy (Linux and VM Program Manager): martha.mccona...@marist.edu
Rick Barlow (VM Project Manager): rrhbar...@gmail.com
Mark Post (Linux Project Manager): mp...@suse.com


Martha

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Test email

[Martha McConaghy]

This is just Marist doing a test.  Please ignore.

Martha

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Panel discussion at SHARE

[Martha McConaghy]

On Thursday, 3/8 at 11am, we will be hosting a customer panel session at
SHARE on experiences running Linux on System z and all that goes with it.
This is a no holds barred, lively session that has been very well received
at the last few SHARES.  So, if you are going to be in Atlanta next week, be
sure to look for it.

Better yet, we are still looking for some customers (i.e. not IBM or a vendor)
who would like to particpate in the panel.  There is no work involved.  Just
answer questions and give opinions based on your experience.  If you like
being part of a lively discussion, then you would be great as a panelist.

If you are are interested, and will be attending SHARE in Atlanta, please
contact me off list.

Martha McConaghy
SHARE: Linux and VM Program Manager
Marist: System Architect/Technical Lead
Marist College

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Re: Panel discussion at SHARE

[Martha McConaghy]

Yes, thanks for catching that (I don't know what day it is today!).

The session is on 3/15 NOT 3/8.

Martha

On Mon, 5 Mar 2012 13:22:10 -0500 Michael MacIsaac said:
Martha,

 On Thursday, 3/8 at 11am, we will be hosting a customer panel session at
 SHARE
Do you mean 3/15?  Isn't SHARE next week?

Mike MacIsaac mike...@us.ibm.com   (845) 433-7061

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Discussion list for IBM System z Ensembles

[Martha McConaghy]

I've created a new LISTSERV list for the discussion of running in an IBM
System z Ensemble environment, ibmen...@marist.edu.

We have just ventured into this world.  I've been working to set up a z114/zBX
ensemble for our research lab and have run into numerous challenges unlike
anything I've seen before.  I've heard similar things from the few others who
are also venturing into this brave new world. So, I figured it would help
to have some place to share information, tips on getting around problems or
just commiserating about it.  Some have suggested using the existing lists,
but I've found that these challenges are very complex and don't lend
themselves to one of the more specific lists.

Discussions on the new list will not be limited to a specific operating
system, but should involve the ensemble environment.  So, there will probably
be things involving multiple levels, such as Unified Resource Manager,
network, SAN, Blades, Windows, etc. along with z/VM, Linux and z/OS.

To subscribe, send an email to lists...@vm.marist.edu containing the text:

sub ibmens-l

The list is open to all subscribers, but you must be subscribed in order to
post to it.  Feel free to share this note on other lists or forums where there
may be people who would be interested.

Martha McConaghy
System Architect/Technical Lead
Marist College

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Re: z114

[Martha McConaghy]

Bob,

I assume you are interested in SAN based storage, not direct attached
(System z can do it either way).  I'm only familiar with IBM storage, so
the others on the list will have to chime in on other vendors.  The FICON
adapters in the z114 can run in either FICON or FCP mode.  In FCP mode, they
can talk to any SCSI based SAN.  We use Cisco at Marist, but I'm pretty
certain that it can talk to the others as well.  On the storage side, we
use DS8000s for both direct attached (FICON) and SAN storage.  Most of the
cheaper IBM boxes such as DS4000s and DS5000s cannot talk directly to a System
z as they do not have the emulation code.  However, if you have an SVC, System
z can talk to it and any storage behind it.  (SVC does the emulation.)  There
is also the newer IBM XIV storage, which System z should be able to handle
without an SVC.  (We don't have one but that is what I've been told.)

Martha McConaghy
System Architect/Technical Lead
Marist College

On Thu, 18 Aug 2011 08:29:32 -0400 Robert J Molerio said:
We may be getting a z114 to test the feasibility of z/VM/Linux on Z for our
shop.

I'm not a mainframer but I'd like to know what storage devices can be
provisioned for the z114 and what the preferred method is to accomplish
this.
--
Thank you,

Bob Molerio
Systems Administrator
New York University
ITS Computer Facilities Services/Infrastructure
Level C-2
75 Third Avenue
New York NY 10003-5527
email:robert.mole...@nyu.edu robert.mole...@nyu.edu

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Opportunity to meet with IBM

[Martha McConaghy]

This is a follow up to an email I sent a few weeks ago.  Its directed to
anyone who will be attending SHARE in Orlando and has in interest in the
state of Java support running in zLinux and/or in a virtualized environment in
general.  We will be having a meeting with a member of the IBM Software Group
about issues related to the current IBM Java support in these environments.

If you wish to participate in this meeting, please contact me directly (off
list).  While space is limited, there is still room available.

Martha McConaghy
Linux and VM Program Manager, SHARE Inc.

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Opportunity at SHARE in Orlando (fwd)

[Martha McConaghy]

Over the last few years, the state of Java support on z/Linux and on
virtualized platforms in general, has become an important issue for Marist.
In particular, the difficulty in migrating open source applications from
the SUN Java to the IBM Java on z/Linux has been a major problem for us.  I
have heard from other people about concerns with the performance of Java in
virtualized environments such as z/VM and VMWare as well.

At SHARE in Orlando this August, we have the opportunity to sit down and
discuss these issues with Marcel Mitran, Senior Technical Manager with the
IBM compiler team.  We will be able to share our concerns with him as well as
hear the latest on support for Java and the OpenJDK efforts.

So, if you have a concern about these issues and would like to participate
in this closed door meeting, please respond to me directly (off list
please).  Space will be limited, so don't wait too long.  You must be
registered for the conference in order to participate.

SHARE Orlando will be held Aug. 8-12 at the Dolphin Resort,
http://www.share.org for more information.

Martha McConaghy
Linux and VM Program Manager
SHARE, Inc.

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Non System z question

[Martha McConaghy]

Sorry to bring up something that is not related to System z, but we are
stumped and I hope someone on this list might have some helpful information.

We have RHEL 5 running on a p550 in several LPARs.  The LUNs for these systems
reside on a storage device that is going away, so I'm moving them to an IBM
SVC.  I've followed the process to move them from an image mode Vdisk to a
managed Vdisk on the SVC.  I can confirm that the process works because I
mapped one of the new disks to another Linux running on a different platform
and we can read the data on it, see the partitions, files, etc.
However, when the disk is mapped to the p550 and attached to the LPAR via VIO,
the data seems to get corrupted.  An AIX formatted label ends up on the disk
and it is unusable.  Even if we remove it from the p550 and map it to a
different system, the disk is still unusable.

I was just wondering if anyone of you have ever run Linux in this type of
configuration (on a p550 with VIO) and have any idea what is happening?  I
suspect that VIO is initializing the disk, but another person is doing that
work and she doesn't know why this is happening.  (I really don't know
anything about pSeries.)

Anyone have any suggestions?


Martha

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Logtail2 utility

[Martha McConaghy]

There is a utility that comes in Debian and Ubantu named logtail2.  Does
anyone know if there is a version that will run on SLES 10?

Martha

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Re: SunGard SCT Banner applications in zLinux

[Martha McConaghy]

Jose,

We have been running with Oracle database and Banner for a couple of years,
while we have been converting over from IA.  Over the summer, the application
servers were also moved to z/Linux and we just recently moved the SIS
component into production.  We are going through our first full student
registration with all of Banner entirely on z/Linux this month.  Its been an
adventure.

We will be doing a presentation on our experiences at SHARE in Anaheim this
coming February.  However, feel free to drop us a note and we would be
glad to discuss it before that.

Martha McConaghy
Marist College

On Tue, 9 Nov 2010 18:58:42 +0300 Jose Munoz said:
Hi,

Someone know if *SunGard SCT Banner* applications are running in zLinux or
if they can execute in z/Linux with Oracle DB.

Thanks,
*
*
*Jose Munoz
Senior IT Consultant*
*skype: jmunoz61*

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Re: Suggestions for web based dashboard

[Martha McConaghy]

Yeah, we actually do run Xymon and Rich's clients on VM.  We use Xymon
very heavily to monitor our systems. I'm not sure yet what kind of data
they want to present.  However, it did occur to me that some of the
components of Xymon, such as rrd could be used to presents graphs of data,
etc.  I have to get them to better define the project, I think, before
jumping at any technology.

Thanks for the ideas.

Martha


On Thu, 26 Aug 2010 08:34:40 -0500 Dave Jones said:
I would like to add tha the Hobbit z/VM client support was done by Rich
Smrcina and it's a slick piece of work. I run it here on my z/VM system.

On 08/26/2010 06:29 AM, Thomas Kern wrote:
 You could also look at hobbit. There is a hobbit client for z/VM so
 that you can report on the host data as well as the various linuxes.

 /Tom Kern

 On 8/26/2010 1:38 AM, David Boyes wrote:
 Have a look at the combination of OTRS (otrs.com) and Nagios to
 collect the data. Both run acceptably well, and are pretty
 adaptable to different kinds of stats and services to monitor.


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--
Dave Jones
V/Soft Software
www.vsoft-software.com
Houston, TX
281.578.7544

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Looking for some good stories...

[Martha McConaghy]

The Linux and VM Program at SHARE is looking for some good stories.   In
particular, we are looking for people who can talk about their experiences
implementing and running large, critical applications on Linux on System z,
either with or without z/VM.

At the recent conference in Boston, LVM sponsored a day dedicated to
discussing experiences using Oracle under Linux on System z and it was very
well received.  So, at the next conference (Anaheim CA 2/27-3/4/11), we
would like to continue that topic, plus have presentations on other large
applications such as SAP, WAS and Cognos.  Other suggestions are also welcome.

So, if you have a story to tell, we bet that there are others who would like
to hear it.  Speaking at SHARE is a rewarding experience, not intimidating at
all.  The members of the LVM Program team will help you through it.

We are currently starting our scheduling process for the Anaheim conference.
The call for presentations is open at http://www.share.org.  Please submit
your proposal via the web site.  If you want to discuss it with someone before
creating a proposal, please contact me off-list and I'll be happy to help.

Martha McConaghy
LVM Program Manager

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Group dinner at SHARE

[Martha McConaghy]

The Linux and VM Program of SHARE will be having their group dinner on
Tuesday, 8/3/10 at Durgin Park in Boston.  Anyone attending SHARE is welcome
to join us.  Its a great way to chat one-on-one with developers and leaders
in the Linux and VM community, and we always have a great time.

The arrangements are strictly informal, everyone is responsible for their
own dinner bill.

To join us, please send an email to Gail Riley (riley_g...@emc.com) so
she can add you to the head count.

Also, don't forget our big Oracle Day on Wed, 8/4.  If you are or will be
running Oracle databases or applications on Linux on z, then you will want to
see these presentations.

Martha McConaghy

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Running Oracle on zLinux

[Martha McConaghy]

Running Oracle databases and applications on Linux on System z has become a
hot topic for many of us now.  How to get them working and, especially,
how to get them to perform well are of major concern.  However, since this is
all still relatively new, there isn't a lot of information or real life
experience available yet.

Because of the growing interest in this area, the Linux and VM Program
of SHARE has put together a series of presentations dedicated to this subject.
These presentations will feature people with real life experience in porting
Oracle applications to zLinux, such as Gerard Shockley of Boston University
and David Lacey of Aetna, as well as experts who have supported numerous
customers during their transitions to this environment.  This series will
feature up-to-date information on new releases, hidden hazards as well as
hints and tips to make everything work well.  If you are running or are about
to port Oracle based applications to zLinux, you cannot afford to miss these
presentations.

This series will take place on Wed, Aug. 4 in Boston, MA as part of the
overall SHARE conference.  (For a specific listing of the presentations being
offered, please see http://share.org )  There is still plenty of time to
register for SHARE.  Full week and single day registrations are available.

Martha McConaghy
(Linux and VM Program Manager)
Marist College

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FC over IP advice

[Martha McConaghy]

Forgive me for posting something that is not strictly Linux related.  However,
I know a lot of you also have SAN experience too.

We are looking to extend our SAN infrastructure to include a remote location
in Syracuse, NY (approx. 250 miles from Poughkeepsie). We already have a
network connection to the site and now want to do FC over IP to it.  We are
having trouble identifying the Cisco equipment we will need to make this
work (we have all Cisco on our network).

Currently, we have a Cisco 3845 edge router that connects both our Internet 1
and Internet 2 links.  Our main SAN infrastructure is made up of 2 Cisco
9513 MDS.

We know that we will need to add something here and
something up at Syracuse to do the FC over IP.  Everything we find, however,
appears to be approaching end of life.

Does anyone have any thoughts or recommendations?  Feel free to send them
to me directly.

Martha

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OpenOffice on SLES 11 install problem

[Martha McConaghy]

One of my colleagues is trying to install openoffice on SLES 11 on z and
is running into a problem with an RPM error:


installation of openoffice.org-ure-1.6.0-9483 failed:
(with --nodeps --force) Error: Subprocess failed.  Error:RPM failed: error:
unpacking of archive failed: cpio: Bad magic

I google'd this and found some email discussions about the problem, but
no clear resolution.  Does anyone have any ideas?

Is anyone using something other than OpenOffice to convert .doc files to
.pdf?

Martha

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Re: Gentoo VM request

[Martha McConaghy]

A few years ago, Marist College became involved with the Open Source
Development Lab.  We hosted a z/VM system on a large z990 and provided
virtual machines for anyone who wanted to do open source development work
on it.  The OSDL is pretty much gone now, but we still maintain that system
and there are a number of developers who use it to maintain their s390/System
z builds (Slackware and Debian among others).

We can provide you with a virtual machine and disk space in order to do your
work.  I'll contact you off-list to work out the details.

Martha McConaghy
Marist College


On Sun, 6 Jun 2010 16:09:38 +0200 =?ISO-8859-1?Q?Ra=FAl_Porcel?= said:
Hello list,

I'm one of the developers of the Gentoo Linux[1] on zSeries team. I'm
writing this mail in case someone on this list can help us:

Since some months ago the S390 VM's we were using for maintaining the
s390/s390x port were stopped due to a problem with the air conditioner
on the room where the machine was running.

That makes us unable to continue supporting the s390 port

If you or your company are able to provide us an S390 VM, it would be
greatly appreciated by the s390 team.

We would need the following:
- SSH access
- At least 10GB of disk space

Thanks

PS: The Hercules emulator is NOT an option, so please don\u2019t suggest
that.

[1] http://www.gentoo.org

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Test note, please ignore

[Martha McConaghy]

Just delete this note.

Martha

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Re: Rejected posting to LINUX-390@VM.MARIST.EDU

[Martha McConaghy]

Thanks for the heads up on this.  I don't post to the list often enough
to notice these things.  I found the original bounce notice in our spam
filters and was able to trace the received headers back to a problem Lotus
Notes server at Progressive.com.  It appears to be bouncing postings back to
LISTSERV, which is then notifying the poster of a duplicate. I can't tell
which of the three progressive.com subscribers is at the heart of the problem.
The headers don't have that information.  One of the three is being rejected
as a bad address, so I'm pretty sure that one is not causing it.

So, I've removed all three addresses from the list.  That should stop the
bounce notifications.  If any of them are still legit, they'll be able to
resubscribe to the list and, hopefully, the problem won't happen again.  If it
does, please drop me a note off-list.

Martha

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Re: Linux and z/VM Wiki

[Martha McConaghy]

Wow..I don't really know how this discussion got so far off-base.

For several years now, there has been a lot of discussion in the z/VM
community about the need to have a place to collect the wisdom of the
elders, i.e. the knowledge and experience of those of us who have been
doing this a long time and which can be of help to the new folks who keep
showing up asking for help.  A wiki seemed like a useful place to try and do
that.  (Dave even tried to get something like this going a few years ago.)
Mark Post is simply trying to get that movement going again and I appreciate
his efforts.

Since Linux continues to be the hot thing that companies are putting on
z/VM, it makes sense to include information on it in the wiki too.  Absolutely
no one has suggested getting rid of this list or supplanting it with the wiki.
There is certainly no reason the two cannot coexist nicely.

Whether or not you are willing to trust the information provided on the wiki
is totally up to each individual.  Just because some wiki's are full of crap
isn't really a good reason not to try this one.  If there are problems with
the way the wiki is managed, we'll deal with it.  We are simply trying to fill
a need that, so far, no one has successfully addressed.

Martha McConaghy   (SHARE Linux and VM Program Manager)
Strategic Planner/Project Manager
Marist College

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VM-FCP connections

[Martha McConaghy]

I've finally, after some pain and frustration, have gotten our z990 and DS8300
communicating via the SAN.  I'm defining the devices on the z/VM 5.4 side
using edev.  So far, this has just been a test to figure out how to make it
work.  However, I'm planning on making use of this on a z9 for our production
Linux guests who need access to large data volumes (i.e. our Oracle servers,
etc.).

I know very little about the performance issues of edev vs. direct SCSI
connections, NPIV and all of that stuff.  I've read some of the presentations
and red books and, well, after some bouts of dizziness, I realize that I don't
get it.

So, can anyone who is doing this in real life like to share some pearls of
wisdom?  What are the practical limits to the number of edevs you should
create on a single FCP connection?  Are there limits to how big a LUN you
should have connected, or does it matter?

Martha

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Tuning Oracle memory use (fwd)

[Martha McConaghy]

We have a bunch of Oracle databases running on SLES 10 in one of our z/9
partitions.  We are only getting started with this, so we don't much (i.e.
nothing) about tuning Oracle to be a polite guest in this environment and
our DBA is just as new to it.  He is getting advice from a vendor, but
I have no faith in that as they think a mainframe is just a big PCsigh...

Anyway, we are looking at memory usage on these servers and things don't
seem right to me.  However, I know little to nothing about how Linux uses
memory.  One servers hows physical memory at 99% used, but actual is
only at 9%.  Swap is also at 99%.  Those numbers don't sound healthy.

What types of things can our DBA do to tune how Oracle uses memory or should I
just up its virtual storage and postpone the problem?  (Our CP paging is going
up dramatically too.)

Martha

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Re: WHat are people doing

[Martha McConaghy]

Terry,

We are moving to a new ERP for the college, and utilizing Oracle on Linux
on z for all the backend database functions. We already have 5 production
and test servers going.

Martha McConaghy
Marist College

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Weird application freeze problem

[Martha McConaghy]

I've been testing out Hobbit in a SLES 10 virtual machine on z/VM.  It is
a monitoring application based off of Big Brother.  So far, it works great
except for one weird thing.  We have a cron task that runs once a night
that does ntpdate to sync the time with an NTP server.  If the time is
in sync, no problem.  However, if the time is out of sync and is adjusted,
Hobbit freezes.  The tasks still exist, but they just stop doing anything.
Apache continues to display the same web page without an update.  Stopping
the Hobbit daemon doesn't help, in fact, it does nothing.  The tasks never
stop.  I have to recycle the entire system in order to free it up.

Has anyone seen a problem similar to this?  Any ideas?

Martha

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SAN and Linux on zSeries

[Martha McConaghy]

We are currently looking to add some disk storage to our SAN and I'm
anticipating connecting our z9 to it at some point to support Linux guests
on z/VM.  We are looking at buying at least one, perhaps two DS4800's.
However, there doesn't seem to be any info for supporting Linux on zSeries
on them.  They have host kits available for Linux on Power and Linux
on Intel, but not zSeries.

Does anyone have any experience with the DS4000 series and Linux on z?
If you have your z on the SAN, what types of devices are you using?

Any info would be helpful.  Thanks and happy holidays to everyone!

Martha

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