[Lustre-discuss] Inactive OST

[Andreas Dilger]

On 2010-04-19, at 01:41, xgl at xgl.pereslavl.ru wrote:
> I have 1 OST that seems like inactive device on client:
> [Client] lfs df -h
> UUID                     bytes      Used Available  Use% Mounted on
> lustre00-MDT0000_UUID    814.8G    471.8M    767.8G    0% /mnt/ 
> lustre00[MDT:0]
> lustre00-OST0000_UUID: inactive device
> lustre00-OST0001_UUID      7.2T     10.4G      6.8T    0% /mnt/ 
> lustre00[OST:1]
> How can I activate this device?
>
> I have 2 OSSs theoretically configured as a failover pair using  
> heartbeat, 1 MDS and 2 OSTs accessible from both OSS-es.
> haresources:
> my1.localdomain Filesystem::/dev/disk/by-id/scsi-801::/mnt/ 
> ost0::lustre
> my2.localdomain Filesystem::/dev/disk/by-id/scsi-800::/mnt/ 
> mdt::lustre Filesystem::/dev/disk/by-id/scsi-802::/mnt/ost1::lustre
>
> On both OSS-es this device seems like active:
> [my2.localdomain ~]# lctl dl
>  5 UP osc lustre00-OST0001-osc lustre00-mdtlov_UUID 5
>  6 UP osc lustre00-OST0000-osc lustre00-mdtlov_UUID 5
>  8 UP obdfilter lustre00-OST0001 lustre00-OST0001_UUID 7
>
>  0 UP mgc MGC192.168.11.152 at o2ib 89a7ffad-6d5e-8468-1b95- 
> c694f35b8ad1 5
>  1 UP ost OSS OSS_uuid 3
>  2 UP obdfilter lustre-OST0000 lustre-OST0000_UUID 3
>
> What  am I missing?


If, in fact, the OST is active on both OSSes, that would be VERY bad.   
However, it seems like you have two different OSTs, one in the  
"lustre" filesystem, one in the "lustre00" filesystem, so it seems you  
have some sort of a configuration problem.

Cheers, Andreas
--
Andreas Dilger
Principal Engineer, Lustre Group
Oracle Corporation Canada Inc.