If this was covered in previous notes, sorry, but I didn't see it, and
I've been out for a few days so I didn't get into this at the beginning.
In Red Hat (and probably Suse too), there's a chicken-egg problem. The
DASD driver gets its list of valid devices from a parm that's passed to
the
Good point.. I've always advised giving ranges in modprobe.conf and
allowing for growth so you don't have to worry about initrd in most cases.
Also - use the ranges as an indicator of what's there.. example:
100 -- /boot
101-110 -- swap
120-130 -- OS disks ( / ) - LVMs for the
LVM gives you the option of swapping around the device numbers
transparently too. It will alway be able to build the volumes, even if
the nodes change. Red Hat also, by convention, sets up everything to
mount by label, giving the same flexibility to non-LVM devices. The
only one that NEEDS to
oh - and I forgot backup.. If your plan is to make physical backups of the
Linux OS and use TSM for the rest .. you can restrict your backup jobs to
particular ranges fairly easily.
On Mon, Feb 23, 2009 at 7:53 AM, Scott Rohling scott.rohl...@gmail.comwrote:
Sure .. the device numbers don't
Sure .. the device numbers don't matter to the LVM at all -- they just
matter to whoever is trying to figure out what disks to LINK/ATTACH to fix
something..
On Mon, Feb 23, 2009 at 7:45 AM, Hall, Ken (GTS) ken_h...@ml.com wrote:
LVM gives you the option of swapping around the device numbers
I need some DASD zLinux configuration help.
How can I configure multiple paths to a single disk in SUSE zLinux? I have
8 paths to our Shark and I’m running zLinux SUSE 10 in zVM V5.3 on
a z9 and I want to configure multiple paths to a single
22.8 GB 3390-27 disk.
Also has anyone used
On 2/23/09 11:12 AM, David K. Kelly dkke...@courts.state.va.us wrote:
How can I configure multiple paths to a single disk in SUSE zLinux? I have
8 paths to our Shark and I¹m running zLinux SUSE 10 in zVM V5.3 on
a z9 and I want to configure multiple paths to a single
22.8 GB 3390-27 disk.
David,
I was just wondering what the objective of running multi path was.
Is it to run PAV? Or is there some other reason?
Is your mod 27 a full pack minidisk or is it going to have multiple minidisks?
Ron Foster
--Original Message--
From: David K. Kelly
Sender: Linux on 390 Port
To:
Is anyone using Linux on Z accessing an FCP via an SVC (SAN Volume
Controller)? If so, do you see the WWPNs and LUNs displayed in the
Yast Zfcp panel after a GET_WWPNs or GET_LUNs?
As it trickles down it ends up in zfcp_san_disc. It skips any WWPN
that reports any type but Storage. Our SVC
Hi,
I just started back at a shop with SuSE 7.2 installed in an LPAR on a
z10 and no experienced sysadmin. The root password was changed and no
one knows what it is. We do not have VM, another Linux LPAR, or the
installation materials. Is there a way to resolve this?
Thanks,
Craig
Does anyone have SUDO authority without password?
On Mon, Feb 23, 2009 at 11:47 AM, Kittendorf, Craig X.
kittendorf.cr...@mail.dc.state.fl.us wrote:
Hi,
I just started back at a shop with SuSE 7.2 installed in an LPAR on a
z10 and no experienced sysadmin. The root password was changed and
On 2/23/2009 at 11:47 AM, Kittendorf, Craig X.
kittendorf.cr...@mail.dc.state.fl.us wrote:
Hi,
I just started back at a shop with SuSE 7.2 installed in an LPAR on a
z10 and no experienced sysadmin. The root password was changed and no
one knows what it is. We do not have VM, another
Kittendorf, Craig X. wrote:
Hi,
I just started back at a shop with SuSE 7.2 installed in an LPAR on a
z10 and no experienced sysadmin. The root password was changed and no
one knows what it is. We do not have VM, another Linux LPAR, or the
installation materials. Is there a way to resolve
On 2/23/2009 at 12:58 PM, Lee Stewart lstewart.dsgr...@attglobal.net
wrote:
-snip-
Is it the SVC that should be saying Storage? Or is it zfcp_san_disc
that should also be accepting Multi-function device??
Based on the fact that check was ripped out at some later time (it's not in the
On 2/23/2009 at 1:07 PM, Jack Woehr j...@well.com wrote:
-snip-
http://www.linuxquestions.org/questions/linux-software-2/forgot-password-suse-lin
ux-10-434891/
And there's also the (easiest) option of booting with init=/bin/bash
which lets you become root ...
I'm pretty sure that option
Lee,
We have a lab machine using Linux on Z accessing an FCP via an SVC (SAN
Volume Controller). We can confirm your observation that we don't see the
WWPNs and LUNs displayed in the Yast Zfcp panel after a GET_WWPNs or
GET_LUNs. As you mention, the zfcp_san_disc script runs san_disc and is
This may sound really off the wall, but what is ZZSA's opinion of
zLinux DASD? Could it be used to zap the root password?
Dave Gibney
Information Technology Services
Washington State University
-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Thanks Mike and Mark...
We'll modify the script...
Lee
Michael O'Reilly wrote:
Lee,
We have a lab machine using Linux on Z accessing an FCP via an SVC (SAN
Volume Controller). We can confirm your observation that we don't see the
WWPNs and LUNs displayed in the Yast Zfcp panel after a
Thank you David and Ron for the quick responses.
Let me explain what I'm trying to do.
In zLinux I have a DB2 file system that is setup on one large 3390-27
disk pack. And when I use Linux tools like iostat I see one disk
with one path to the Shark. What I would like to do is use the
eight
Hi Mark,
The z10 came by not having any increase in the monthly hardware charge,
but saving a bunch on IBM software and working deals with most vendors.
Also, Linux is being fought against by the Windows folks.
Thanks,
Craig
Date:Mon, 23 Feb 2009 11:12:18 -0700
From:Mark Post
It's a characteristic of the architecture that all eight paths will be used
under the covers, PROVIDING you can drive eight I/O operations at the same time
to different volumes (or cache, for some subsystems, when reading). Normally
you can't do this from a single guest. What you ARE getting
On 2/23/2009 at 3:46 PM, Kittendorf, Craig X.
kittendorf.cr...@mail.dc.state.fl.us wrote:
Hi Mark,
The z10 came by not having any increase in the monthly hardware charge,
but saving a bunch on IBM software and working deals with most vendors.
Also, Linux is being fought against by the
I haven't figured out how to download a new version without spending
money.
Craig
PS Sorry I forgot to change the subject on my last two posts.
-Original Message-
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
Mark Post
Sent: Monday, February 23, 2009 4:03 PM
To:
We are just now setting up our first hipersocket connection(s) from z/VM
and linux to z/OS and will primarily use this first cut for DB2 connect to
talk to DB2 on z/OS. Does anyone have a guide for the MTU size? ( redbook,
whitepaper, etc )
Thanks,
Bruce Lightsey
Mississippi Dept. of Information
On 2/23/2009 at 3:50 PM, bruce.light...@its.ms.gov wrote:
We are just now setting up our first hipersocket connection(s) from z/VM
and linux to z/OS and will primarily use this first cut for DB2 connect to
talk to DB2 on z/OS. Does anyone have a guide for the MTU size? ( redbook,
Plan to make the MTU size about the average size of the result set that
application
returns. That will probably be very difficult to determine, but probably the
easiest
way to find out will be to ask the developers how large the queries typically
are. Of
course there will be variations and
Actually, you *are* using all the paths the I/O subsystem in the hardware
is already aware of them if they are defined in your IOCP. An I/O presented
to the device by CP gets handed to the I/O processors. The I/O processors in
the frame handle deciding which path to use at any given point based
Jack Woehr wrote:
Kittendorf, Craig X. wrote:
Hi,
I just started back at a shop with SuSE 7.2 installed in an LPAR on a
z10 and no experienced sysadmin. The root password was changed and no
one knows what it is. We do not have VM, another Linux LPAR, or the
installation materials. Is there
John Summerfield wrote:
This is what I would do, and why I reckon Linux security to be so
feeble[1]. One does need to know the commands to mount needed
filesystems.
[1]Give me your disk or physical access to your computer, and not even
your boot-time password's enough.
Hmm.. Even boot-time
Mark Post wrote:
On 2/23/2009 at 1:07 PM, Jack Woehr j...@well.com wrote:
-snip-
http://www.linuxquestions.org/questions/linux-software-2/forgot-password-suse-lin
ux-10-434891/
And there's also the (easiest) option of booting with init=/bin/bash
which lets you become root ...
I'm pretty
John Summerfield wrote:
For completeness for the ignorant, whether that option is available
depends on the boot loader, not on Linux. Since the choice of bootloader
depends on the platform, translating Mark's reply to other platform is
risky.
Excusez moi ?
understanding the 'init=' boot
Ivan Warren wrote:
John Summerfield wrote:
This is what I would do, and why I reckon Linux security to be so
feeble[1]. One does need to know the commands to mount needed
filesystems.
[1]Give me your disk or physical access to your computer, and not even
your boot-time password's enough.
On 2/23/2009 at 6:36 PM, Ivan Warren i...@vmfacility.fr wrote:
And if the kernel shipped with SLES 7.2 doesn't understand 'init=', then
i t can't be used (regardless of the boot loader).
Of course the kernel did understand the init= parameter. Getting it passed to
the kernel at boot time
John Summerfield wrote:
Windows is a little more difficult, I need a Linux boot disk and the
right program, and if it's a domain controller there's another trick
after that.
Which reminds me, I still have a fight to win against OS X.
And then again..
It also depends whether you are trying to
Mark Post wrote:
Of course the kernel did understand the init= parameter. Getting it passed to
the kernel at boot time is the issue, and I'm not sure the s390-tools did it,
that far back in time.
That's where I'm surprised here..
Kernel parameters to the bootloader is just.. a blob !
A
Is there any email MUA package that I can load which will deliver email
directly to an MS Exchange server without a local MTA? This is on a RHEL
server. The closest that I can find is Alpine, but I cannot figure out how
to totally automate it. What I want is simple:
echo some line of information
Ken --
In the thread, we may have not specifically mentioned that list of
devices. Nice catch.
But ... be aware that the list-o-devices may not always be needed. In
particular, once the root is mounted, especially if UDEV is then also
available, additional disks can be marked online via
On Feb 23, 2009, at 8:13 PM, John McKown wrote:
Many thanks for any ideas.
I wrote a very simple MTA based on Net::SMTP in perl to do this. It's
straightforward. Net::SMTP makes it very, very easy, assuming you
already speak Perl. However:
Most Linux distros let you configure an MTA to
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