[hddherman]

btrfs has 1, 2 and 3, and if you count projects like WinBtrfs [0], then possibly 0 as well.

Been using it happily for years on my workstations, and about a year on my home server mainly because of the licensing issue and a kernel update possibly resulting in the ZFS pool not being imported.

ZFS is still great, but the kernel issue is still problematic on anything other than Ubuntu, where Canonical ships kernels with ZFS built right in.

[0]: https://github.com/maharmstone/btrfs

[doublepg23]

Maybe the problem is me but I’ve never had a good time with mainline btrfs. I use it on a Synology without issue (they use a lot of patches and seemingly however use the built in RAID support.) but btrfs takes the cake for “unrecoverable errors from a filesystem” whenever I’ve used it for more than a “ext4++” filesystem on a single disk.