converting lvm based Virtual Machine to qcow image.

Ahmed Kamal ahmed.kamal at
Wed Jan 5 09:58:15 UTC 2011

I wouldn't really do it that way. The reason being, running applications 
like a database server, might have unflushed data, i.e. the on-disk data 
structures would not be fully consistent. I don't really like taking a 
backup in that state (called crash consistent state). If "possible" it's 
always safer to power off before snapshotting, otherwise, at least make 
sure your applications have flushed all data to disk (mysql can flush 
and lock tables to do that, but other apps behave differently)


On 01/05/2011 11:54 AM, Nikolai K. Bochev wrote:
> I would suggest the following :
> 1. Pause the virtual machine ( with virsh for example )
> 2. Take a snapshot of the logical volume.
> 3. Unpause the virtual machine
> 4. Convert the snaposhot ot qcow2.
> I'm doing something similar with a python script.

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