[TD-Linux]

There is a dedicated storage driver for zfs: https://www.jwillikers.com/podman-with-btrfs-and-zfs

That said, the default overlay storage driver already supports reflinks, which will get you most of the benefits.

[yencabulator]

Last I looked, ZFS didn't support reflinks. https://github.com/openzfs/zfs/issues/405