Re: Migrating Linux on zFCP to new cpu
We moved from a z9 to a z196- new ficon express cards- new wwn's . The san team had to rezone/remask luns. We also had an issue that the folks who do hardware config's gave us wrong information as to what the new wwpn's were to be. The san team scrambled to rezone on the day of cut over. HCD folks said wwpn's changed after their gen and POR. Our servers have the linux OS on mainframe dasd - only application and database data was on san. So could bring up servers and look to see what the wwpn's really were. -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Sue Sivets Sent: Friday, October 14, 2011 7:44 PM To: LINUX-390@VM.MARIST.EDU Subject: Migrating Linux on zFCP to new cpu We are getting ready to move from our old cpu to a new z114. I think most of my z/Linux guest machines will move to the new equipment without any problems, but I have one z/Linux machine that was built on zfcp dasd only, and it has me worried. I can change the world wide information in the vm profile exec, but how do I change the zipl.conf information, and the zfcp definition for the / dasd? Has anyone migrated a z/Linux image that boots from zFCP dasd from one machine to another? Is there anything I can do so that VM will make things easier? Sue Sivets -- Suzanne Sivets Systems Programmer Innovation Data Processing 275 Paterson Ave Little Falls, NJ 07424-1658 973-890-7300 Fax 973-890-7147 ssiv...@fdrinnovation.com -- 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/ This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this communication and destroy all copies. -- 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: Migrating Linux on zFCP to new cpu
Hi, If you are migrating (that is your CPU serial number does not change) and the migration plan includes moving the old FICON Express cards to the new machine then all you have to do is make sure the cards will receive the same CHPID numbers on your IODF. Other than that you don't have to do a thing (well maybe zoning - depends if you are using soft/hard zones - ask your SAN guys). If on the other hand you are replacing your FICON Express cards then the SAN guys will have to create new zones for the new WWPNs (as they will change with the new cards). If you are using NPIV then it is best to use the IBM WWPN prediction tool to make sure the new WWPNs numbers. You should supply this numbers to your SAN guys (you can use the tool if you are not using NPIV as well). Either way I can't see any reason for you to change your zfcp configuration on the Linux guest (all the Linux guest care about is the virtual fcp device and the target WWPNs - that is your disk subsystem that should not change during the migration). Hope this helps... Offer Baruch -Original Message- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Sue Sivets Sent: Saturday, October 15, 2011 1:44 AM To: LINUX-390@VM.MARIST.EDU Subject: Migrating Linux on zFCP to new cpu We are getting ready to move from our old cpu to a new z114. I think most of my z/Linux guest machines will move to the new equipment without any problems, but I have one z/Linux machine that was built on zfcp dasd only, and it has me worried. I can change the world wide information in the vm profile exec, but how do I change the zipl.conf information, and the zfcp definition for the / dasd? Has anyone migrated a z/Linux image that boots from zFCP dasd from one machine to another? Is there anything I can do so that VM will make things easier? Sue Sivets -- Suzanne Sivets Systems Programmer Innovation Data Processing 275 Paterson Ave Little Falls, NJ 07424-1658 973-890-7300 Fax 973-890-7147 ssiv...@fdrinnovation.com -- 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/ - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1411 / Virus Database: 1522/3951 - Release Date: 10/14/11 -- 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/
Migrating Linux on zFCP to new cpu
We are getting ready to move from our old cpu to a new z114. I think most of my z/Linux guest machines will move to the new equipment without any problems, but I have one z/Linux machine that was built on zfcp dasd only, and it has me worried. I can change the world wide information in the vm profile exec, but how do I change the zipl.conf information, and the zfcp definition for the / dasd? Has anyone migrated a z/Linux image that boots from zFCP dasd from one machine to another? Is there anything I can do so that VM will make things easier? Sue Sivets -- Suzanne Sivets Systems Programmer Innovation Data Processing 275 Paterson Ave Little Falls, NJ 07424-1658 973-890-7300 Fax 973-890-7147 ssiv...@fdrinnovation.com -- 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/
Migrating Linux on zFCP to new cpu
Sue, I just had the fun of moving 32 linux guests with allocated fcp luns. When it comes down to it this really depends on what is changing to your connection to the san switch. The SAN team will have to rezone the luns to the wwpn's of the new cpu chpid (to the san team this is an HBA). If you are lucky and he new cpu connects to the same switches the linux side may not need to change, but if the luns are connected through different wwpn's on the switch side the zfcp config must reflect this. regards Phil Tully -- 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/
