[Gluster-users] filesystem type: Btrfs, ZFS

[Peter Grandi]

So I am going to setup one or more volumes on 40-60 4TB-8TB SSDs
(unfortunately without PLP but high speed is not a requirement).

For "reasons" I would use a filesystem type with built-in compression
and in practice that means Btrfs or ZFS: cacheFS is a bit immature still
and compression in F2FS (which is otherwise a very good choice in most
cases whether for HDD or SSD) is a bit weird. I have used bothb
extensively and I would use both on a single SSD, so no use of their
built-in volume manager.

The question is which one works better with GlusterFS and I guess a
significant aspect is how big the GlusterFS extended attributes are
"typically" and whether that much can be inlined in an i-node. ZFS
inodes can be pretty big (16KiB) and inline a lot of data; but inline
extended attributes for Btrfs IIRC are limited to around 3900B on
systems with 4KiB pages. Any other considerations?