Hi,
I have been running IOZONE tests to 32 LVM volumes with ext2
filesystems on them. I am using a Sles11 SP4 guest on z/VM 6.3. I keep seeing
unusable path messages in /var/log/messages from Multipathd. However I don't
see any path faults or any other messages indicating problems. Does anyone have
any idea what these messages mean? Internet searches have yielded little. I
appreciate any help.
Sep 19 09:49:34 vm63ckds11sp4jta5 multipathd: sdbj: unusable path
Sep 19 14:42:58 vm63ckds11sp4jta5 multipathd: sdag: unusable path
Sep 20 12:26:05 vm63ckds11sp4jta5 multipathd: sdco: unusable path
Sep 20 12:32:45 vm63ckds11sp4jta5 multipathd: sdbf: unusable path
vm63ckds11sp4jta5:/extra # multipathd -k'show maps stats'
name path_faults switch_grp map_loads total_q_time q_timeouts
mpatha 0 0 1 0 0
mpathb 0 0 1 0 0
mpathc 0 0 1 0 0
mpathd 0 0 1 0 0
mpathe 0 0 1 0 0
mpathf 0 0 1 0 0
mpathg 0 0 1 0 0
mpathh 0 0 1 0 0
mpathi 0 0 1 0 0
mpathj 0 0 1 0 0
mpathk 0 0 1 0 0
mpathl 0 0 1 0 0
mpathm 0 0 1 0 0
mpathn 0 0 1 0 0
mpatho 0 0 1 0 0
mpathp 0 0 1 0 0
mpathq 0 0 1 0 0
mpathr 0 0 1 0 0
mpaths 0 0 1 0 0
mpatht 0 0 1 0 0
mpathu 0 0 1 0 0
mpathv 0 0 1 0 0
mpathw 0 0 1 0 0
mpathx 0 0 1 0 0
mpathy 0 0 1 0 0
mpathz 0 0 1 0 0
mpathaa 0 0 1 0 0
mpathab 0 0 1 0 0
mpathac 0 0 1 0 0
mpathad 0 0 1 0 0
mpathae 0 0 1 0 0
mpathaf 0 0 1 0 0
Thanks,
Chris Burgess
Phone: 1-800-445-2588 x42149
1-508-249-2149
Fax: 1-508-497-8027
Email: christopher.burg...@emc.com<mailto:burgess_christop...@emc.com>
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