Consistently backup your virtual machines using libvirt and zfs – part 1

How to backup virtual machines is a pretty interesting topic and a lot could be said. COW file systems like zfs or btrfs actually do most of the job for you, thanks to their snapshotting capabilities. Unfortunately that’s not enough to get consistent backups, because taking a snapshot of a running VM is very similar […]

Optane 900p 480G: zfs vs btrfs vs ext4 benchmarks

I recently bought a new server with an Optane 900p 480G and I decided to give zfs a try instead of using btrfs as usual (I will not use raid or other devices, just a single 900p).

I will use my Optane drive to host several KVM virtual machines.

I have been fooled to think […]