There is no zoning. These are all development systems used only by the z/vm and its linux guests. It was a machine upgrade rather than a new machine and the NPIVs for the z/vm systems were preserved. I did check them and I will check again but all the linux systems did start ok initially. The physical WWPNs may have changed, especially if they are associated with the ficon cards, which were permitted during the upgrade.
Btw can anyone tell me how I can stop the EDEV devices so that I can vary the Chris's offline without shutting down z/VM (which has some z/os guests). Keith > On 4 Jun 2015, at 21:30, David Kreuter <dkreu...@vm-resources.com> wrote: > > Hi Keith: Check the zoning and the NPIVs. The NPIVs presented to SVC > from the BC12 could have changed. > David Kreuter > > > -------- Original Message -------- > Subject: Problems with SCSI-over-FCP after machine upgrade > From: Keith Gooding <kw...@yahoo.co.uk> > Date: Thu, June 04, 2015 4:21 pm > To: LINUX-390@VM.MARIST.EDU > > This may not be the proper forum but maybe someone can help. > We have a small number of linux systems (<32) under z/VM 6.3 which use > SCSI connections to LUNs on a SAN Volume Controller via a couple of IBM > SAN24B switches (the equivalent of Brocade 300). There are also some > systems which use EDEVs on the same SVC. This had worked on z10 BC for > about 5 years without problems. > Last week the z10 was upgraded to a zBC12, retaining the same FICON > cards (4Gbs), but not necessarily associated with the same CHPIDs. Since > then a number of the LUN connections have been 'lost', cauing linux > systems to fail. SCSIDISC displays eg "HCPRXS975I Virtual FCP device > 1A05 ignored because the adapter was not able to connect to the fibre > channel network". It is then not possible to rebot the linux system. > > Restarting 'everything' - ie SVC nodes, SAN switches, CHIPD vary off/on > - cleared the problem for a while. > Any ideas where to start looking ?. I have discovered that we have > 32 > FCP subchannels defined on the CHPID (but highest used unit address is > 1f, and there are only about a dozen in use). Also the switch has not > been 'qualified' for use on z12 (but it appears that it was not > qualified for z10 either). > Any advice greatly appreciated ! > > > ---------------------------------------------------------------------- > 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/
