My VMs are raw disk images as logical volumes. My backup script takes a snapshot of a VM's volume, copies it off to another machine and then deletes the snapshot.
For some reason I have a snapshot that didn't delete which is now preventing the backups from proceeding:
...
Friday 1 July 02:10:01 AEST 2016: Taking snapshot of /dev/vms-lvm/MBE3-MythUbu-14.04-64bit.raw...
ERR: The specified snapshot volume /dev/vms-lvm/MBE3-MythUbu-14.04-64bit.snap already exists. Operation canceled.
...
But if I try to remove the snapshot volume I get an error that it's in use:
$ sudo lvremove /dev/vms-lvm/MBE3-MythUbu-14.04-64bit.snap
Logical volume vms-lvm/MBE3-MythUbu-14.04-64bit.snap in use.
Can anyone please advise on how I find out what's using the snapshot, then kill that process so I can remove the snapshot so my backups can work again?
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