I have but only small scale: single 2T drive and data, with maybe a dozen snapshots. I use Btrfs for most everything these days, with ZFS archive. The biggest i

I have but only small scale: single 2T drive and data, with maybe a dozen snapshots. I use Btrfs for most everything these days, with ZFS archive. The biggest issue I had, a while back now, with thinp is if the metadata volume gets full...kaboom. And it's non-trivial to repair.