[CentOS] multipath

Paras pradhan pradhanparas at gmail.com
Tue Jan 12 16:37:15 UTC 2010


Upgrding the kernel to 2.6.18-164.10.1.el5xen brought back /dev/dm-* and now
multipath -ll has the ouput.

I am curious about what has caused the lost of /dev/dm* in my previous
kernel.

Any ideas?

Paras.


On Mon, Jan 11, 2010 at 8:09 PM, Paras pradhan <pradhanparas at gmail.com>wrote:

> Yes every thing's loaded.
>
> Here is the output:
>
> [root at cvprd1 ~]# lsmod | grep dm
> dm_round_robin         36801  0
> rdma_cm                68565  1 ib_iser
> ib_cm                  73449  1 rdma_cm
> iw_cm                  43465  1 rdma_cm
> ib_sa                  75209  2 rdma_cm,ib_cm
> ib_core               105157  6 ib_iser,rdma_cm,ib_cm,iw_cm,ib_sa,ib_mad
> ib_addr                41929  1 rdma_cm
> dm_multipath           56153  1 dm_round_robin
> scsi_dh                41665  1 dm_multipath
> dm_raid45              99401  0
> dm_message             36289  1 dm_raid45
> dm_region_hash         46273  1 dm_raid45
> dm_mem_cache           39489  1 dm_raid45
> dm_snapshot            52105  0
> dm_zero                35265  0
> dm_mirror              54737  0
> dm_log                 44993  3 dm_raid45,dm_region_hash,dm_mirror
> dm_mod                101521  11
> dm_multipath,dm_raid45,dm_snapshot,dm_zero,dm_mirror,dm_log
>
>
>
> Thanks
> Paras.
>
>
>
>
> On Mon, Jan 11, 2010 at 6:33 PM, nate <centos at linuxpowered.net> wrote:
>
>> 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
>>
>>
>> _______________________________________________
>> CentOS mailing list
>> CentOS at centos.org
>> http://lists.centos.org/mailman/listinfo/centos
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.centos.org/pipermail/centos/attachments/20100112/68b071bf/attachment.html 


More information about the CentOS mailing list