So if you have an unmountable zfs pool, instead of reaching for fsck (which doesn't and won't exist) you can instead do: zpool clear -F data And it will t

So if you have an unmountable zfs pool, instead of reaching for fsck (which doesn't and won't exist) you can instead do: zpool clear -F data And it will take advantage of the copy-on-write nature of ZFS to roll back to the last verifiably consistent state of your filesystem. That's a lot better than the uncertain fixes applied by fsck to other file systems. It even tells you how old the restored state is.