[ClusterLabs] Antw: Re: Antw: Re: snapshots in a clvm environment - some questions for proceeding

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Thu Mar 2 02:48:50 EST 2017


>>> "Lentes, Bernd" <bernd.lentes at helmholtz-muenchen.de> schrieb am 01.03.2017 um
23:13 in Nachricht
<5769D607-E3F8-4C7D-BD70-F72E3A994B30 at helmholtz-muenchen.de>:

>> 
>> Actually that's what we are doing, but at some point in the past I had 
> ruined
>> the directory with the VM images (user error). THe problem then was that you
>> need a running VM to restore files inside the VM. This is when you would 
> like
>> to have a crash-consistent backup image of your VM. However I found no 
> working
>> solution yet (we have VM images hosted on OCFS2, hosted on a cLVM LV).
>> 
>> Regards,
>> Ulrich
>> 
>>> 
> 
> With OCFS2 you could snapshot (i think they call it reflink) the Image file.

I didn't find the proper tools to do so in SLES11, and the manual page is quite vage on using the REFLINK feature. How do you do it?

> 
> Bernd 
> 
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