Re: mount: 10.0.6.10:/: can't read superblock

[Wido den Hollander <wido@widodh.nl>]

Hi Martin,

On 06/05/2012 08:07 PM, Martin Wilderoth wrote:
> Hello
>
> Is there a way to recover this error.
>
> mount -t ceph 10.0.6.10:/ /mnt -vv -o name=admin,secret=XXXXXXXXXXXXXXXXXXXXXXX
> [  506.640433] libceph: loaded (mon/osd proto 15/24, osdmap 5/6 5/6)
> [  506.650594] ceph: loaded (mds proto 32)
> [  506.652353] libceph: client0 fsid a9d5f9e1-4bb9-4fab-b79b-ba4457631b01
> [  506.670876] Intel AES-NI instructions are not detected.
> [  506.678861] libceph: mon0 10.0.6.10:6789 session established
> mount: 10.0.6.10:/: can't read superblock
>

Could you share some more information? For example the output from: ceph -s

Did you change anything to the cluster since it worked? And what version 
are you running?

> One of my mds logs has 24G of data.

Is it still running?

>
> I have some rbd devices that I would like to keep.

RBD doesn't use the MDS nor the POSIX filesystem, so you will probably 
be fine, but we need the output of "ceph -s" first.

Does this work?
$ rbd ls
$ rados -p rbd ls

Wido

>
> /Regards Martin
>
>
>
>
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