> Our issue is that z/VM and the zLinux guests have to be up > and the npiv channel logged in before the new NPIV WWPN > can be zoned from the SAN side.
I've heard this before and am not sure it's strictly true. > At least this is my understanding with EMC storage. The server side (whether z/VM or zLinux or something else) has to be "up" and must have initiated a fabric login for convenience tools to "see" them. Makes sense: they come online, the storage side sees the traffic, it gets more WWPNs to make note of. Call it discovery mode. Difficult to believe the storage side truly cannot be pre-populated with the new WWPNs. More likely it is a hassle, outside the scope of what your storage guys have done up to now. But it's KIND OF IMPORTANT that they find and use the pre-pop feature on their end. It's a question of scalability. (Not just a speed bump for you. They too would be up all night long zoning and masking LUNs if they can't script it ahead of time.) My experience was with EMC and my storage team made it work. Pre-loading transition WWPNs was outside their day-to-day work, but System z was far from the only server platform stretching them. Again, it will probably HELP your storage guys to be able to pre-enter the new WWPNs. How many are in use now? If just a half dozen, then not worth the trouble. But some z/VM and zLinux have literally hundreds, even thousands, of WWPN and LUN pairs to punch. On Fri, Jan 10, 2014 at 12:38 PM, Will, Chris <cw...@bcbsm.com> wrote: > Our issue is that z/VM and the zLinux guests have to be up and the npiv > channel logged in before the new NPIV WWPN can be zoned from the SAN side. > At least this is my understanding with EMC storage. > > Chris Will > > -----Original Message----- > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Scott > Rohling > Sent: Friday, January 10, 2014 12:28 PM > To: LINUX-390@VM.MARIST.EDU > Subject: Re: Question on WWPN WP > > I'm not familiar with the WPT tool, but my experience using NPIV would leave > me to believe that the tool simply tells you what you're new WWPN's will be > for the FCP channels, so that you can get zoning, etc established > before migrating to it. I don't believe you'll have to change anything > on the Linux guests - as the target WWPN's on the fabric won't change - only > the WWPN associated with the virtual device you attach to the Linux > guests will. So if you know which virtual devices you'll use - they can > zone things so those new WWPNs have access to same SAN as the old. Then > you should be able to come up on the new box without changing anything. > After you migrate - they can remove the old WWPN's from the zoning. > That's my understanding, but my experience is mostly on the z/VM side and > using EDEV with NPIV WWPN's.. I assume the same concepts apply to Linux > guests directly attaching the stuff.. > > Scott Rohling > > > > > On Fri, Jan 10, 2014 at 8:47 AM, Will, Chris <cw...@bcbsm.com> wrote: > >> We are migrating from a Z10 to an EC12 mainframe and have questions >> about the WPT tool. Can we use this to import our existing NPIV WWPN >> definitions from the Z10 to the EC12 so we do not have to reconfigure >> the SAN definitions? If not, how does the WWPN prediction tool help >> if we have to bring the new system and zLinux guests up to do the SAN >> configuration? We are using EMC storage with directly attached zfcp LUNs. >> >> Chris Will >> Systems Software >> (313) 549-9729 >> cw...@bcbsm.com >> >> >> >> The information contained in this communication is highly confidential >> and is intended solely for the use of the individual(s) to whom this >> communication is directed. If you are not the intended recipient, you >> are hereby notified that any viewing, copying, disclosure or >> distribution of this information is prohibited. Please notify the >> sender, by electronic mail or telephone, of any unintended receipt and >> delete the original message without making any copies. >> >> Blue Cross Blue Shield of Michigan and Blue Care Network of Michigan >> are nonprofit corporations and independent licensees of the Blue Cross >> and Blue Shield Association. >> >> ---------------------------------------------------------------------- >> 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/ > > > The information contained in this communication is highly confidential and is > intended solely for the use of the individual(s) to whom this communication > is directed. If you are not the intended recipient, you are hereby notified > that any viewing, copying, disclosure or distribution of this information is > prohibited. Please notify the sender, by electronic mail or telephone, of any > unintended receipt and delete the original message without making any copies. > > Blue Cross Blue Shield of Michigan and Blue Care Network of Michigan are > nonprofit corporations and independent licensees of the Blue Cross and Blue > Shield Association. > > ---------------------------------------------------------------------- > 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/ -- -- R; Rick Troth Velocity Software http://www.velocitysoftware.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/
