Why does 'multipath -l' output shows paths as "undef" in Red Hat Enterprise Linux?
Issue
- In
multipath -loutput, the paths are listed as[undef] - It appeared
multipath –ltrying to retrieve some information that is not defined. It's output looks like LUNs are not available, but it is not. multipath -llists the paths as[active][undef]where asmultipath -llpath status as[active][ready]?
[root@localhost ~]# multipath -l
mpathh (3600c0ff0001187d84537fe5101000000) dm-2 HP,P2000 G3 FC
size=93G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=0 status=active
|- 2:0:0:1 sdk 8:160 active undef running
`- 2:0:1:1 sdl 8:176 active undef running
[root@localhost ~]# multipath -ll
mpathh (3600c0ff0001187d84537fe5101000000) dm-2 HP,P2000 G3 FC
size=93G features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=130 status=active
|- 2:0:0:1 sdk 8:160 active ready running
`- 2:0:1:1 sdl 8:176 active ready running
Environment
- Red Hat Enterprise Linux 5/6
- device-mapper-multipath
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