On 18 February 2014 14:30, Russell Coker <russell@coker.com.au> wrote:
On Tue, 18 Feb 2014, Petros <Petros.Listig@fdrive.com.au> wrote: BTRFS doesn't have any sort of RAID-5/6 support that's remotely usable. RAID- Z/Z2/Z3 works really well on ZFS.
If you use a BTRFS root filesystem with systemd then you can't balance or scrub the filesystem because systemd journal file use triggers a BTRFS data corruption bug. But then root on ZFS is pretty much unusable on Linux anyway.
The version of btrfs that ships with Ubuntu Saucy supports RAID levels: 0, 1, 5, 6, 10 You can mix and match, so metadata gets mirrored while data gets raid5, for instance, if you really want. I've been running btrfs as root on a few systems, and they've all been fine. Note that they're Ubuntu though, so they'll be Upstart, not systemd, and with almost certainly later versions (and more heavily patched versions) of the linux kernel. But presumably available on Debian via some backports. -T