Re: Incremental Backups

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On 2013-09-20 15:41, Davide Guerri wrote:
Hi Thomas,

Hello Davide.

I'm using this script which leverages external snapshots and
blockpull: https://github.com/dguerri/LibVirtKvm-scripts

Yeah. I saw that and tried this already. But it needs to be adjusted to libvirtd-1.1.2 i think. Can you do this? I fiddled a litte bit around
but wasn't realy successfull.

hn LibVirtKvm-scripts # ./fi-backup.sh -b /opt/virt-backup-local/ -d serve.lordcritical
[DEB] qemu-img version '1.6.0' is supported
[DEB] KVM version '1.6.0,' is supported
[DEB] Snapshot for domain 'serve.lordcritical' requested
[DEB] Using timestamp '20130920-151742'
[DEB] Snapshotting block devices for 'serve.lordcritical' using suffix 'bimg-20130920-151742'
[VER] Snapshot for block devices of 'serve.lordcritical' successful
[ERR] Error getting backing file for '/var/lib/libvirt/images/serve.lordcritical.bimg-20130920-151742'.

At the moment i try:

https://bitbucket.org/guilhemfr/virt-back

cheers
t.

It's very simple and on ubuntu requires some tweaks on apparmour configuration.

Hth

Cheers,
 Davide

--

Davide Guerri
http://about.me/davide_guerri

On 20 Sep 2013, at 15:31, Thomas Stein <himbeere@xxxxxxxxxxxx> wrote:

Hello.

Is someone performing incremental backups via libvirt for qemu/kvm machines? I'm still having a hard time to find a nice procedure. I mean is it possible to make a full backup of an image on monday a do the next days of the week
incremental backups?

Another way could be mount the image and rsync its contents. Does that makes sense?

Also i read in qemu changelog:

---
Support for a new block device background job. Started by drive-backup, it will backup a disk's content to a new file. Unlike drive-mirror, the new file will include the source disk's content at the time the backup job was started. Atomic backup of multiple disks is supported using the "transaction" QMP command.
---

Is this supported by libvirt?

thanks and best regards
thomas

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