[Lustre-discuss] Lustre 1.8.4 - Local mount of ost for backup purposes, fs type ldiskfs or ext4?

[Kevin Van Maren]

Well, that's the opposite problem of Bug 24398.

Are you sure you are using the ext4-based ldiskfs?

Kevin


On May 11, 2011, at 4:23 PM, Jeff Johnson <jeff.johnson at aeoncomputing.com 
 > wrote:

> Greetings,
>
> I am doing a local mount of a >8TB ost device in a Lustre 1.8.4
> installation. The ost was built with a backfstype of ldiskfs.
>
> When attempting the local mount:
>
>    mount -t ldiskfs /dev/sdc /mnt/save/ost
>
> I get:
>
>    mount: wrong fs type, bad option, bad superblock on /dev/sdt,
>                missing codepage or other error
>
> I am able to mount the same block device as ext4, just not as  
> ldiskfs. I
> need to be able to mount as ldiskfs to get access to the extended
> attributes and back them up. Is this still the case with the ext4
> extensions for Lustre 1.8.4? I am able to mount read-only as ext4 but
> any attempt at reading the extended attributes with getfattr fails.
>
> Thanks,
>
> --Jeff
>
> -- 
> ------------------------------
> Jeff Johnson
> Manager
> Aeon Computing
>
> jeff.johnson at aeoncomputing.com
> www.aeoncomputing.com
> t: 858-412-3810 x101   f: 858-412-3845
> m: 619-204-9061
>
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>
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