[pve-devel] KVM Live Backup performance

[Dietmar Maurer]

> I would like to perform some benchmarks where CPU/IO/RAM intensive tasks
> are run inside the VM while performing a LVM Snapshot backup and then a KVM
> Live Backup.  Comparing the completion times of the CPU/IO/RAM tasks would
> allow us to assess what subsystems are affected, good or bad, by KVM Live
> Backup.

You said that you have some VMs which behave badly with new backup? May I ask
what you run inside those VMs?

> Since all of the LVM Snapshot code was removed I am unable to perform the
> above benchmarks, anyone have a suggestion how we could perform such tests
> easily?

Simpyl make a lvm snapshot manually - that is quite easy.