Why the multipath failover is not working in RHEL?
Issue
- If one of 2 path do not work, multipath automatically do not change the path.
# rpm -qa | grep mult
device-mapper-multipath-0.4.7-48.el5
# multipath -ll
sdc: checker msg is "emc_clariion_checker: query command indicates error"
mpath0 (3600601608e1129005ec4811ec128e211) dm-0 DGC,VRAID
[size=15G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=1][active]
\_ 0:0:0:0 sda 8:0 [active][ready]
\_ 1:0:0:0 sdc 8:32 [failed][faulty]
\_ round-robin 0 [prio=0][enabled]
\_ 0:0:1:0 sdb 8:16 [active][ready]
\_ 1:0:1:0 sdd 8:48 [active][ready]
Environment
- Red Hat Enterprise Linux 5/6
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