Hi all. Welcome to Monday :)
We have a v890 with a 2540 attached. One controller goes into one qlc
FC card, and the other controller into the other FC card on the host.
A volume has been created on the 2540 and mapped to the host. All
was good. However, while luxadm showed the one WWN with two paths
(/dev/dsk/c2t0d7s2 and /dev/dsk/c4t0d7s2) format showed two seperate
From my minimal understanding of the multipathing (enabled with
stmsboot -e) the system should be seeing this as one device node with
a long name for the uniqueness.
Following a thread I found online (it must be true! :) I added the
device-type-scsi-options-list ="SUN LCSM100_F",
to the scsi_vhci.conf file and rebooted. This let the system
recognize the multiple paths and gave me one device name for it.
However, I can't do anything. newfs returns a "i/o error". prtvtoc
shows the correct partition table for the drive, with slice 6 being my
1.99TB space. luxadm shows everything online and happy.
I have found this post here:
that talks about the 2540 not really acting like you'd think. The
gist of it is that yes, it has two controllers, but for a LUN only one
is active for that LUN at a time. So basically, trying to do
round-robin to acheive better performance doesn't work on this device.
Would that be the opinion of the group or am I missing something?
If that is the case, if I take the lines back out of scsi_vhci, would
I at least still get failover if one of the fibers were to go out? Or
does it only failover if the controller dies?
||9/22/2008 11:56:21 AM