On Jun 21, 2013, at 2:58 PM, Joseph L. Casale wrote:
>> So I have an XFS file system within LVM which has an external log.
>
>> A snapshot volume is created w/o issue;
>
>> But when i try to mount the file system;
>> mount: /dev/mapper/vg_spock_data-datasnapshot already mounted or /snapshot busy
>
> So the filesystem was built requiring an external log device?
> Let me guess, the original block device is still mounted and accessing its log device?
Bingo, you got it.
I did this for speed.
The log device is on a pair of mirrored SSD drives I had lying around.
Might as well put em to use.
I have a feeling that freezing the XFS filesystem while a snapshot is made is the way to fix this.
However while I have tested freezing and XFS volume, I am a little shy on doing it on a live production system.
I'll wait until the weekend midnight.
It should be fast;
1) freeze
2) snap shot it
3) mount the snap shot
4) unfreeze
5) do my rsnapshot
6) then unmount and remove the snap shot volume
What do you think?
- aurf
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