Virtual Block device resize corrupts XFS

[Markus]

Hi,

I am in a foreign country right now, but I will be back next week, will 
write all information down as soon as I am back.

kind regards

Markus

Am 16.11.2014 um 20:34 schrieb Markus Rhonheimer:
> Hi,
>
> I am running Centos 7 and have created a virtual block device with ZFS 
> (ZVOL). I put XFS onto the block device without partitioning it.
>
> This worked very well as storage disk for a VM.
>
> A few days ago I wanted to increase the size of the block device, but 
> accidently decreased it by 1 TB (from 7 to 6). I found out about it 
> and immediately increased the size of the drive to 8 TB afterward.
>
> The XFS partition can still be mounted and I can list the files on it, 
> but xfs_repair -n says: "/Sorry/, /could not find valid secondary 
> superblock"
>
> /Is there the possibility to rescue some files?
>
> kind regards
>
> Markus
>
>
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