Hi list,
we're trying to get multipath working on a server (which run SLES 10)
connected to a STK FLEXLINE 380 SAN. This SAN has AVT (Auto Volume
Transfer) activated and we have two LUNs exported to the server, which
one on a different preferred path (one on controller A and the other on
controller B).
Since the SAN has AVT activated and that we are using preferred path,
i'm guessing that we have to use group_by_prio policy with the
mpath_prio_tpc callout program.
I can see that mpath_prio_tpc get the right priority :
# mpath_prio_tpc /dev/sda
3
# mpath_prio_tpc /dev/sdb
0
# mpath_prio_tpc /dev/sdd
0
# mpath_prio_tpc /dev/sde
3
and then if i issue "fdisk -l" on /dev/sda and /dev/sde, each LUN stay
on his preferred controller on the SAN.
The problem is when i start multipath, it will not coalesces the paths
together.
Here's my multipath.conf :
defaults {
udev_dir /dev
polling_interval 10
path_grouping_policy group_by_prio
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/sbin/mpath_prio_tpc /dev/%n"
path_checker tur
rr_weight priorities
failback immediate
# user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z][[0-9]*]"
devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]"
device {
vendor "STK"
product "Universal Xport"
}
}
multipaths {
multipath {
wwid 3600a0b8000119c20000002a445338779
alias test1
}
multipath {
wwid 3600a0b8000119c20000002a945338e7f
alias test2
}
}
and here's the relevant error part of the output of "multipath -v3" :
...
test1: set ACT_CREATE (map does not exist)
test1: domap (0) failure for create/reload map
...
test2: set ACT_CREATE (map does not exist)
test2: domap (0) failure for create/reload map
...
Am i missing something or multipath-tools just can't work on
STK FLEXLINE 380 with AVT enabled?
Thanks a lot for your time!
--
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