[CentOS] multipath

nate centos at linuxpowered.net
Tue Jan 12 00:33:30 UTC 2010


Paras pradhan wrote:
> Hi.
>
> Somehow I do not see any out put using multipath -l or multipath -ll . But I
> can see using dry run ie multipath -d.
>
> Also I do not see /dev/dm-*
>
> It was there before. How do I re claim it.

Are the modules loaded?

[root at dc1-mysql001a:~]# lsmod | grep dm
dm_zero                35265  0
dm_mirror              60617  0
dm_round_robin         36801  1
dm_multipath           52945  2 dm_round_robin
dm_mod                 99737  17 dm_zero,dm_mirror,dm_multipath
[root at dc1-mysql001a:~]# multipath -l
350002ac0006a0714dm-1 3PARdata,VV
[size=1.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 1:0:0:3 sdc 8:32  [active][undef]
 \_ 1:0:1:3 sde 8:64  [active][undef]
 \_ 2:0:0:3 sdg 8:96  [active][undef]
 \_ 2:0:1:3 sdi 8:128 [active][undef]
350002ac000790714dm-0 3PARdata,VV
[size=2.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 1:0:0:2 sdb 8:16  [active][undef]
 \_ 1:0:1:2 sdd 8:48  [active][undef]
 \_ 2:0:0:2 sdf 8:80  [active][undef]
 \_ 2:0:1:2 sdh 8:112 [active][undef]



nate




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