Consider supporting VM hibernation (xl save/restore)

[andrewdavidwong]

On 2016-08-28 15:22, johnyjukya@[...].org wrote:

Are there any thoughts to support "hibernation" in VM's? (Not just a
pause, but something that could survive a reboot?) "xl save/restore" does
it, and I've had a bit of success with that, but I think it freaked out
the VM Manager on a couple of occasions. :P

Especially when memory is tight, it'd be nice to be able to hibernate a
less-critical VM or two, and fire up something more important.

[marmarek]

Similar/related: #832

[marmarek]

Similar/related: #832

[mfc]

@flamsmark re: our chat.

as a note this would make much easier doing back-ups so that you don't need to shutdown VMs to back them up, only hibernate them. As Marek notes, this could also be used in the "inactive VMs" scenario (#832). I see this as more useful functionality than the Pause feature.

[mfc]

@flamsmark re: our chat.

as a note this would make much easier doing back-ups so that you don't need to shutdown VMs to back them up, only hibernate them. As Marek notes, this could also be used in the "inactive VMs" scenario (#832). I see this as more useful functionality than the Pause feature.

[v6ak]

Hibernate is actually not needed for backing up running VMs. You might clone their image using LVM. This is also what I do (if the VM img is backed by LVM) in my backup PoC.

[v6ak]

Hibernate is actually not needed for backing up running VMs. You might clone their image using LVM. This is also what I do (if the VM img is backed by LVM) in my backup PoC.