Le lundi 23 septembre 2013 à 16:28 +0200, Thomas Stein a écrit : > 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-backup;hb=HEAD > > Hello Daniel. > > Thank you but unfortunately i don't have a LVM setup. I'm actually working on support for image based virtual disk (LVM still needed on the host where the image are stored) Regards, Daniel > > 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@xxxxxxxxxx > >> https://www.redhat.com/mailman/listinfo/libvirt-users > > > > _______________________________________________ > libvirt-users mailing list > libvirt-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvirt-users -- Daniel Berteaud FIREWALL-SERVICES SARL. Société de Services en Logiciels Libres Technopôle Montesquieu 33650 MARTILLAC Tel : 05 56 64 15 32 Fax : 05 56 64 15 32 Web : http://www.firewall-services.com _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
