Chris, We've been talking about your migration problem internally. If you open a hardware PMH asking for migration assistance, we might be able to help you.
Regards, Ray Higgs System z FCP Firmware Development Bld. 706, B42 2455 South Road Poughkeepsie, NY 12601 (845) 435-8666, T/L 295-8666 rayhi...@us.ibm.com Linux on 390 Port <LINUX-390@vm.marist.edu> wrote on 01/13/2014 11:32:42 AM: > From: "Will, Chris" <cw...@bcbsm.com> > To: LINUX-390@vm.marist.edu > Date: 01/13/2014 11:38 AM > Subject: Re: Question on WWPN WP > Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> > > We try to keep the number of NPIV WWPNs at 32 or less per physical > channel. Otherwise we get nameserver and login problems. > > Chris Will > Systems Software > (313) 549-9729 > cw...@bcbsm.com > > > -----Original Message----- > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf > Of Raymond Higgs > Sent: Saturday, January 11, 2014 2:16 PM > To: LINUX-390@VM.MARIST.EDU > Subject: Re: Question on WWPN WP > > Chris, > > Yes, there is port zoning, but all of the vendors will recommend > small zones, and port zoning does not encourage small zones. When > setting up zoning, it is the number of virtual ports in it that > matter. Port zoning makes it easy to ignore the virtual > considerations because you are working with physical resources. > Extra care is needed to avoid making a zone too big, and sometimes > it only takes an add of 1 port. > > Fibre channel has a notification mechanism called state changes. > Whenever a virtual nport logs in or out of the fabric, all of the > other virtual ports in the fabric are notified by the fabric > controller service running on the switch(s). This can be a very big > burden on the switch fabric. The switch vendors have recommendations > about zone sizes which are much smaller than their consoles will let > a person set up. For the most part, newer switches will work with > larger zones so people really need to check for the hardware that they have. > > 600 Luns was mentioned in another email. If this means 600 NPIV > subchannels, then 1 giant zone with 600+ members would be too big! > > The other Chris said they were using Brocade. I believe Brocade > also recommends either port, or WWPN zoning. So no mixing port and > WWPN zoning. > > The toughest aspect of making zones too big is that it isn't > apparent right away. The symptoms do not show up until events like > fibre pulls, pchid/chpid/switch port vary off/on, guest IPL/ > shutdown, etc happen. > > Regards, > > Ray Higgs > System z FCP Firmware Development > Bld. 706, B42 > 2455 South Road > Poughkeepsie, NY 12601 > (845) 435-8666, T/L 295-8666 > rayhi...@us.ibm.com > > Linux on 390 Port <LINUX-390@vm.marist.edu> wrote on 01/10/2014 02:37:10 > PM: > > > From: "burgess, christopher" <christopher.burg...@emc.com> > > To: LINUX-390@vm.marist.edu > > Date: 01/10/2014 04:30 PM > > Subject: Re: Question on WWPN WP > > Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> > > > > You don't have to zone by WWPN. In the switch you can set up your > > zones by port number and then make sure the cables are in the right > ports. > > > > Thanks, > > Chris Burgess > > Phone: 1-800-445-2588 x42149 > > 1-508-249-2149 > > Fax: 1-508-497-8027 > > Email: christopher.burg...@emc.com > > > > > > > > > > > > > > > > -----Original Message----- > > From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of > > Raymond Higgs > > Sent: Friday, January 10, 2014 2:27 PM > > To: LINUX-390@VM.MARIST.EDU > > Subject: Re: Question on WWPN WP > > > > Chris, > > > > I don't agree with that. My memory is foggy because there are so many > > storage array vendors and their consoles are all different. I haven't > > run across one that doesn't let you enter WWPNs manually. > > It isn't always easy to find, and might be through a CLI, but it is > > always there. > > > > So, I bet you have 2 options: > > enter them in some manual way > > drag and drop with the GUI as you have been advised > > > > Regards, > > > > Ray Higgs > > System z FCP Firmware Development > > Bld. 706, B42 > > 2455 South Road > > Poughkeepsie, NY 12601 > > (845) 435-8666, T/L 295-8666 > > rayhi...@us.ibm.com > > > > Linux on 390 Port <LINUX-390@vm.marist.edu> wrote on 01/10/2014 > > 12:38:25 > > PM: > > > > > From: "Will, Chris" <cw...@bcbsm.com> > > > To: LINUX-390@vm.marist.edu > > > Date: 01/10/2014 12:40 PM > > > Subject: Re: Question on WWPN WP > > > Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> > > > > > > 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 > changinganything. > > > 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. 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