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?
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So this worked;
truncate --size=2G logfile
losetup /dev/loop0 logfile
mount /dev/vg_anette_data/datasnapshot /snapshot -o logdev=/dev/loop0,nouuid,ro
Freezing the fs looks to make the log zero. So assigning any device/file for the external log would work.
My mistake was not making the log dev an LVM. However I don't if a log on an LVM would have worked anyways.
At any rate, HTH some one else.
- aurf
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