[Lustre-discuss] Cannot mount snapshot volume

[Hans-Juergen Schnitzer]

Daire Byrne wrote:
> Hi,
> 
> ----- "Hans-Juergen Schnitzer" <schnitzer at rz.RWTH-Aachen.DE> wrote:
> 
>> I cannot mount the snapshot volumes of lustre devices
>> (lustre 1.6.6, Scientific Linux 5.2).
>> For example for the MDT device:
>>
>> $ lvcreate -L 10G -s -n s2 /dev/volgroup_mdt/mdt
>> $ tunefs.lustre --reformat --writeconf --fsname=s2
>> /dev/volgroup_mdt/s2
>> $ mount -t lustre /dev/volgroup_mdt/s2 /lustre_s2_mdt
>> mount.lustre: mount /dev/volgroup_mdt/s2 at /lustre_s2_mdt failed: 
> 
> You should also remove the "last_rcvd" file from the snapshot to avoid doing recovery. Is your MGS on the same device as your MDT? Maybe it is trying to start the MGS too as part of the snapshot which is confusing matters? We use a standalone MGS server/device. 
> 

To remove the last_rcvd file did resolve the problem. Thank you for your 
help.

Hans Schnitzer

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