Ok, got it, Thanks Paolo !
----- Mail original ----- De: "Paolo Bonzini" <pbonz...@redhat.com> À: qemu-devel@nongnu.org Envoyé: Lundi 27 Août 2012 12:10:34 Objet: Re: [Qemu-devel] qcow2: online snasphots : internal vs external ? Il 27/08/2012 11:26, Alexandre DERUMIER ha scritto: > how can I rollback to the point of the snapshot. > > exemple : > image1.qcow2 > file : /beforesnap1 > take a snaphot (snap1), so qemu switch to snap1.qcow2 > write some file: > file: > /aftersnap1. > /beforesnap1 > > Now, how can I rollback to the point of time of snap1 ? > I can reuse image1.qcow2, but if I write some datas on it, I don't > see how I can return to the point of time of the snap1. (like qemu-image -a > with internal snapshots) If you can drop snap1.qcow2 altogether, you just use image1.qcow2 the next time you start QEMU. If you cannot, you create snap2.qcow2 based on image1.qcow2: qemu-img -f qcow2 -obacking_file=image1.qcow2 snap2.qcow2 and use it the next time you start QEMU. Paolo -- -- Alexandre D e rumier Ingénieur Systèmes et Réseaux Fixe : 03 20 68 88 85 Fax : 03 20 68 90 88 45 Bvd du Général Leclerc 59100 Roubaix 12 rue Marivaux 75002 Paris
