Re: Storage Options
We are using Brocade switches. Sorry, I could not find the physical box, therefore I don't know the model or anything else about it. Michael Simms Systems Programmer zSeries VM, VSE, (z)Linux, AIX Naples Campus, Florida 239-552-3479 Enabling America's Best Local Healthcare Please consider the environment before printing this email and SAVE A TREE. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Davey, Clair Sent: Thursday, May 12, 2011 8:53 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Storage Options What model of switches are people using for Ficon to Fiber Channel connectivity to your SANS? The contents of this e-mail are confidential to the ordinary user of the e-mail address to which it was addressed and may also be privileged. If you are not the addressee of this e-mail you should not copy, forward, disclose or otherwise use it or any part of it in any form whatsoever. If you have received this e-mail in error, please notify us by telephone or e-mail the sender by replying to this message, and then delete this e-mail and other copies of it from your computer system. We reserve the right to monitor all e-mail communications through our network. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Is anyone multipathing on SLES 11 SP1?
Thank you. In process of testing. Will update list later. Michael Simms Systems Programmer zSeries VM, VSE, (z)Linux, AIX Naples Campus, Florida 239-552-3479 Enabling America's Best Local Healthcare Please consider the environment before printing this email and SAVE A TREE. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mark Post Sent: Tuesday, March 29, 2011 2:16 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Is anyone multipathing on SLES 11 SP1? On 3/29/2011 at 11:53 AM, Michael Simms simmsmichael1...@yahoo.com wrote: Scanning for LVM volume groups... Reading all physical volumes. This may take a while... Found duplicate PV nKTbzlk3XKmCNSegm50mK5LqnJgfo1sv: using /dev/sdb1 not /dev/sda1 Found volume group VGClinDoc using metadata type lvm2 Activating LVM volume groups... Found duplicate PV nKTbzlk3XKmCNSegm50mK5LqnJgfo1sv: using /dev/sdb1 not /dev/sda1 So, I am unable to get a clean startup using SuSE SLES 11 SP1. We did work through and get SuSE SLES 10 SP3+ working, after months of work/testing/questions. In this startup instance, the system reversed the 'available' disk to sdb1. Odd, should have been sda1. I don't know what to try next. You need to update the filter statement in /etc/lvm/lvm.conf to only look at /dev/disk/by-id/ devices. http://www.novell.com/documentation/sles11/stor_admin/?page=/documentation/sles11/stor_admin/data/bookinfo.html Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Is anyone multipathing on SLES 11 SP1?
Thank you. I am in the process of testing.
Will update list later.
Michael Simms
Systems Programmer
zSeries VM, VSE, (z)Linux, AIX
Naples Campus, Florida
239-552-3479
Enabling America's Best Local Healthcare
Please consider the environment before printing this email and SAVE A TREE.
-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Mauro
Souza
Sent: Tuesday, March 29, 2011 2:15 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Is anyone multipathing on SLES 11 SP1?
Hi Michael,
Looks a lot like your LVM is not blacklisting /dev/sda devices. You have to
edit /etc/lvm/lvm.conf and instruct LVM to not bind to /dev/sd*.
More info on
http://publib.boulder.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp?topic=/liaai/multiBcs/liaaimpbsclvm.htm
Mauro
http://mauro.limeiratem.com - registered Linux User: 294521
Scripture is both history, and a love letter from God.
On Tue, Mar 29, 2011 at 12:53 PM, Michael Simms
simmsmichael1...@yahoo.comwrote:
Help! If anyone has the type of environment described below and has it
working,
please share with us, if you can, how you configured things. If anyone has
any
advice, any advice, we welcome it!
Our environment is:
-SAN - EMC CLARiiON CX4-960
-Mainframe z10
-HBA - 2 zFCP
-Switches - 2 Brocade, between z10 and SAN
-Operating Systems - zVM 6.1 with zLinux SLES 11 SP1
-Contents of /etc/multipath.conf
hma-mf-lin12:/ # cat /etc/multipath.conf
*StartOfFile*
devices {
# Device attributed for EMC CLARiiON
device {
vendor DGC
product *
prio_callout /sbin/mpath_prio_alua /dev/%n
getuid_callout /lib/udev/scsi_id -g -u -d /dev/%n
features 1 queue_if_no_path
path_checker directio
failback immediate
hardware_handler 1 alua
}
}
multipaths{
}
*EndOfFile*
-Partial /etc/sysconfig/kernel
## Path:System/Kernel
## Description:
## Type:string
## Command: /sbin/mkinitrd
#
# This variable contains the list of modules to be added to the initial
# ramdisk by calling the script mkinitrd
# (like drivers for scsi-controllers, for lvm or reiserfs)
#
INITRD_MODULES=jbd ext3 zfcp dm-multipath
-For simplicity's sake, I am including 1 lun as an example. Below are
selected
entries from the startup log.
(Underlines are mine):
Booting default (SLES11_SP1V1)...
...
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered (default)
io scheduler cfq registered
...
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
...
doing fast boot
SCSI subsystem initialized
device-mapper: uevent: version 1.0.3
device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised:
dm-de...@redhat.com
device-mapper: multipath: version 1.1.0 loaded
Creating device nodes with udev
udevd version 128 started
udevd-event[154]: device node '/dev/mapper/control' already exists, link
to
'/dev/device-mapper' will not overwrite it
7 line(s) not displayed
device-mapper: multipath round-robin: version 1.0.0 loaded
emc: device handler registered
hp_sw: device handler registered
rdac: device handler registered
alua: device handler registered
3 line(s) not displayed
Setup multipath devices: ok.
12 line(s) not displayed
Copying static /dev content
..done
2 line(s) not displayed
Starting udevd:
udevd version 128 started
..done
Loading drivers, configuring devices:
scsi0 : zfcp
qdio: 0.0.4500 ZFCP on SC 0 using AI:1 QEBSM:1 PCI:1 TDD:1 SIGA: W AO
scsi 0:0:3:0: Direct-Access DGC RAID 10 0430 PQ: 0 ANSI:
4
scsi 0:0:3:0: emc: detected Clariion CX4-960, flags 0
scsi 0:0:3:0: emc: ALUA failover mode detected
scsi 0:0:3:0: emc: connected to SP A Port 4 (owned, default SP A)
zfcp.747e7d: 0.0.4500: LUN 0x6 on port 0x500601643b202b41 is
already
in use by CSS0, MIF Image ID 1
3 line(s) not displayed
scsi1 : zfcp
2 line(s) not displayed
qdio: 0.0.4600 ZFCP on SC 1 using AI:1 QEBSM:1 PCI:1 TDD:1 SIGA: W AO
1 line(s) not displayed
scsi 1:0:3:0: Direct-Access DGC RAID 10 0430 PQ: 0 ANSI:
4
scsi 1:0:3:0: emc: detected Clariion CX4-960, flags 0
scsi 1:0:3:0: emc: ALUA failover mode detected
scsi 1:0:3:0: emc: connected to SP A Port 6 (owned, default SP A)
sd 0:0:3:0: [sda] 1048576000 512-byte logical blocks: (536 GB/500 GiB)
sd 0:0:3:0: [sda] Write Protect is off
sd 0:0:3:0: [sda] Write cache: disabled, read cache: enabled, doesn't
support
DPO or FUA
sda: sda1
sd 1:0:3:0: [sdb] 1048576000 512-byte logical blocks:
Re: Moving Oracle off zLinux boxes -- comments from the field?
I suspect, I'm unfortunately not a fly on the wall, that Oracle simply wants to sell their newly acquired hardware 'division', Sun. But that is only speculation. This almost looks like a strong shove away from the hardware they can't handle, apparently. I can just see Jack Nickelson screaming to Larry, 'You can't handle the mainframe!!' (except for zO$, I guess it's $upported.) Unfortunately, the application we bought must use Oracle, at least that's my understanding. So that kind of messes with using DB2 as a replacement. The application we are gearing up will be very heavily used, 60+ sites, all with very frequent updates. So, we need the power of the mainframe IFLs and i/o system. But if Oracle doesn't get their support/certification in gear we may have to consider something less than what we were expecting and it would be similar to what is happening in James shop. We'll cross that road when we get to it. -Original Message- From: Linux on 390 Port on behalf of Christopher Cox Sent: Wed 3/23/2011 11:11 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Moving Oracle off zLinux boxes -- comments from the field? Oracle is NOT supporting them well on zLinux. So... there's both the financial and technical reason. Why would anyone stay with a platform that is not well supported? Oracle couldn't handle it, so they are moving. Now... certainly the false mindset issue surrounding mainframes is an issue... but I'd probably move Oracle too if they weren't willing to address support issues in a timely manner. Maybe it's time to change your database supplier?? You know, if if you have to move it, I wonder if moving to something a bit more heavy duty, like a IBM Power7 box was even considered... If DB2 isn't an option, maybe Oracle on Power7 would be a better fit (saying without knowledge of Oracle's commitment of support there as well). From: Barton Robinson bar...@vm1.velocity-software.com To: LINUX-390@vm.marist.edu Date: 03/18/2011 04:04 PM Subject:Re: Moving Oracle off zLinux boxes -- comments from the field? Sent by:Linux on 390 Port LINUX-390@vm.marist.edu wow, your DBAs have the authority to spend that kind of money and make that kind of change without management signature? So no financial analysis, no technical reason, sounds religious. CHAPLIN, JAMES (CTR) wrote: We just had a surprise announcement by one of the Oracle DBAs during a zLinux Application group planning meeting at our worksite. The DBA advised us that they (Database group) were going to move/migrate all the Oracle databases that we have on zLinux boxes off to an intel/unix platform. He did not offer details of the hardware, or when or how, just that they were going to do it. This is a bite of a surprise as we have just moved our MQ off the Mainframe (zOS) to the zLinux platform (guests on zVM) and that move is doing well. This may be due in part to the false mindset that we have in our upper management at our site that Mainframes are old technology. Also we have had slow response from Oracle on resolving issues we have identify (certifying Oracle 11 on z390x architecture, getting Oracle 10 support for RHEL 5.0 on z390x architecture). Has anyone else on this list had any related war stories similar to what we may be about to experience as this move takes place? James Chaplin Systems Programmer, MVS, zVM zLinux -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Moving Oracle off zLinux boxes -- comments from the field?
We are about to put into production, once we have gotten our multipath (failover) issues resolved with EMC, Oracle 10. We had to step back to SLES 10 SP3+ due to Oracles glacial speed with certification of Oracle 11 on zLinux. Also, the application only runs on Oracle 10, I imagine for the same reason. On a brighter note: Our DB2 on zLinux, the latest DB2 for zLinux, is running in test, again we await a resolution of multipathing (failover) issues with our EMC SAN before we make it production. I share your pain. It took us a long time to convince our management that consolidating/introducing Linux images on the z was a good idea. So far we (well, I) aren't disappointed. The part that sorta called off the nay sayers or hushed them up was when we ran a nightly flow that runs on a pSeries (multiple CPUs, same DS4700 subsystem) on Linux/DB2 that ran 5 times faster on our 1 IFL. Hmmm...hard to argue with that. :-) Just my opinion but it sounds to me like someone lost a bet or a poker game where the loser had to give up their platform for Oracle. Just a WAG, but sounds about as reasonable. When management makes decisions like the one you describe, well it leaves me speechless! At least for a little while. I wish you a good outcome. Michael Simms Systems Programmer zSeries VM, VSE, (z)Linux, AIX Naples Campus, Florida 239-552-3479 Enabling America's Best Local Healthcare Please consider the environment before printing this email and SAVE A TREE. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of CHAPLIN, JAMES (CTR) Sent: Friday, March 18, 2011 2:22 PM To: LINUX-390@VM.MARIST.EDU Subject: Moving Oracle off zLinux boxes -- comments from the field? We just had a surprise announcement by one of the Oracle DBAs during a zLinux Application group planning meeting at our worksite. The DBA advised us that they (Database group) were going to move/migrate all the Oracle databases that we have on zLinux boxes off to an intel/unix platform. He did not offer details of the hardware, or when or how, just that they were going to do it. This is a bite of a surprise as we have just moved our MQ off the Mainframe (zOS) to the zLinux platform (guests on zVM) and that move is doing well. This may be due in part to the false mindset that we have in our upper management at our site that Mainframes are old technology. Also we have had slow response from Oracle on resolving issues we have identify (certifying Oracle 11 on z390x architecture, getting Oracle 10 support for RHEL 5.0 on z390x architecture). Has anyone else on this list had any related war stories similar to what we may be about to experience as this move takes place? James Chaplin Systems Programmer, MVS, zVM zLinux -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
Re: Gotcha's
Me as well. We are in the process of making EMC CLARiiON work with multipathing and zFCP. We can't move forward with database development until we get multipathing working correctly, but we could greatly benefit from experiences with Oracle on z. Michael Simms Systems Programmer zSeries VM, VSE, (z)Linux, AIX Naples Campus, Florida 239-552-3479 Enabling America's Best Local Healthcare -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of David Stuart Sent: Tuesday, February 15, 2011 12:23 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Gotcha's I would be interested, too, as I'm in the process of installing Oracle and trying to get all the management tools to run. Right now, the database is up and running, but some of the management tools won't start. Thanks, Dave Dave Stuart Prin. Info. Systems Support Analyst County of Ventura, CA 805-662-6731 david.stu...@ventura.org Davey, Clair cda...@scspa.com 2/15/2011 8:25 AM I would like to hear some of your 'gotcha's when running Oracle databases on Linux on Zeries. You can send them offline if you would like. The contents of this e-mail are confidential to the ordinary user of the e-mail address to which it was addressed and may also be privileged. If you are not the addressee of this e-mail you should not copy, forward, disclose or otherwise use it or any part of it in any form whatsoever. If you have received this e-mail in error, please notify us by telephone or e-mail the sender by replying to this message, and then delete this e-mail and other copies of it from your computer system. We reserve the right to monitor all e-mail communications through our network. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/ -- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For more information on Linux on System z, visit http://wiki.linuxvm.org/
