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[Duplicity-talk] Direct backup of LVM snapshot partitions?
From: |
George MacKerron |
Subject: |
[Duplicity-talk] Direct backup of LVM snapshot partitions? |
Date: |
Fri, 7 Dec 2012 18:01:27 +0000 |
Hi all.
I'm trying to use duplicity to back up LVM snapshots (which are Xen domU
disks).
I've seen scripts that take a snapshot, mount the snapshot, and then back up
the files inside it. But my preference is to just back up the LVM logical
volume directly. I feel more comfortable knowing I have an exact,
filesystem-level snapshot.
However, this doesn't appear to work: if I specify a volume such as /dev/dm-10,
this isn't backed up. So at the moment I am using dd to copy the volume data to
a temporary file, and then using Duplicity on this. However, this causes a lot
of seemingly unnecessary disk thrashing.
So, a couple of questions:
1. Should Duplicity be able to back up the LVM partition directly? If so, how?
(If not, why?).
2. Am I misguided? Is it a much better idea just to mount the snapshot and back
up the files? If so, why?
Many thanks,
George
- [Duplicity-talk] Direct backup of LVM snapshot partitions?,
George MacKerron <=
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, George MacKerron, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, edgar . soldin, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, George MacKerron, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, edgar . soldin, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, GDR!, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, edgar . soldin, 2012/12/10
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, GDR!, 2012/12/11
- Re: [Duplicity-talk] Direct backup of LVM snapshot partitions?, edgar . soldin, 2012/12/11