I would appreciate it if anyone could confirm, or even suggest a fix for, a problem we have with S10 x86 servers running MPXIO to connect to multiple 6140 units. In particular, if there is more than one path from a server to each 6140 controller then a reboot of the server will cause some of the volumes on the 6140 to fail-over to their non-preferred controller. However, if there is just a single path per host/controller pair then there is no problem. By more than one path I mean either multiple initiators on the same server being able to see the same target port (out of the 4 available) on a single 6140 controller, or a single initiator able to see more than 1 of the 4 physical target ports on a 6140 controller. We are controlling which HBA initiators can see which controller port targets through the use of soft zoning on a set of Qlogic FC switches.
While the system heals itself with all of the 6140 volumes eventually reverting back to their preferred controller this is a particularly annoying problem since there is another bug in Solaris which causes some of our servers to kernel panic under certain I/O loads when this unnecessary "flapping" happens. Has anyone else seen this and/or found a solution? P.S. At first glance this seems to rather defeat the M in MPXIO, so hopefully we have just missed a magic setting somewhere. Thanks. -- Stuart Anderson [EMAIL PROTECTED] http://www.ligo.caltech.edu/~anderson _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
