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 <[email protected]> Date: Thu, June 04, 2015 4:21 pm To: [email protected] 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 [email protected] 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 [email protected] 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/
