Re: [ovirt-users] [Qemu-block] Scheduling daily Snapshot

On 2017-12-07 23:19, Nir Soffer wrote: > On Wed, Dec 6, 2017 at 6:02 PM Jason Lelievre <jlelievre(a)folksvfx.com > <mailto:jlelievre@folksvfx.com>> wrote: > > Hello, > > What is the best way to set up a daily live snapshot for all VM, and > have the possibility to recover, for example, a specific VM to a > specific day? > > > Each snapshot you create make reads and writes slower, as qemu has to > lookup data through the entire chain. > > When we take a snapshot, we create a new file (or block device) and make > the new file the active layer of the chain. I'm not sure how much this is going to slow you down exactly, but I can tell you that there are also incremental backups to look into. (e.g. https://wiki.qemu.org/Features/IncrementalBackup)

Max