[nijave]

Why not zfs snapshots? Besides using Hyper-V machine snapshots, that's been the easiest way, by far, for me. No need to worry about the 20 different proprietary tools that go with each piece of software.

Each VM or container gets a data mount on a zvol. Containers go to OS mount and each OS has its own volume (so most VMs end up with 2 volumes attached)

[FloatArtifact]

Well, one argument not to use ZFS is simply the resources it takes. It eats up a lot of ram. Also I'm under the impression that one should never live-snapshot a database without risk of corruption.