Re: [libvirt-users] Incremental Backups

Am 23.09.13 16:00, schrieb Daniel Berteaud: > Le vendredi 20 septembre 2013 à 15:31 +0200, Thomas Stein a écrit : >> 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? > > You can take a look at this script: > http://gitweb.firewall-services.com/?p=virt-backup;a=blob_plain;f=virt-ba... Hello Daniel. Thank you but unfortunately i don't have a LVM setup.

cheers t. > I'm using it on several servers. You can either take a full backup (raw > dd of your LV), or incremential backups. Incrementials are done this > way: > > - pause the VM > - take an LVM snapshot of each of its disk > - resume the VM > - use chunkfs to mount the LVM snapshots as if it was a lot of small > files > - now you can rsync the fuse mount point using rsync, and only modified > blocks will be transfered. If you use something like BackupPC or > rsnapshot, it'll also only store on disk the modified blocks > > > Regards, Daniel >> >> 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 >> >> _______________________________________________ >> libvirt-users mailing list >> libvirt-users(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvirt-users > _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users