| Rich Freeman on 11 Aug 2016 15:44:32 -0700 |
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| Re: [PLUG] BTRFS RAID massively broken |
On Thu, Aug 11, 2016 at 4:33 PM, Lee H. Marzke <lee@marzke.net> wrote: > > http://sdtimes.com/btrfs-raid-code-needs-rewrite/ > > Glad i've stayed away from BTRFS, I'm still on ZFS / FreeNAS for my > storage array. > The issue only applies to the raid5/6 code. I've been telling everybody I ever talk to that raid5/6 on btrfs is strictly experimental no matter what anybody tells you. I don't really have issues with it breaking in a serious way, because I expected it to. What I do have issues with is the number of people who go promoting raid5/6 on btrfs for anything other than pure experimentation or btrfs development. It definitely wasn't ready for even running your home enthusiast server on, unless it is again just to experiment and you keep a full set of backups handy and don't mind having to restore them. raid1 is reasonably safe, though not at ext4 or even zfs levels of safe. Stick to a longterm kernel series that has been out for more than six months and it is fairly dependable, with some well-known caveats (like running out of space). But, I STILL keep a full rsync backup to ext4 of my btrfs raid1 filesystems. I haven't had to touch it in ages, but I sleep a lot better knowing it is there. But, I wouldn't be using btrfs at all for a super-serious application unless I knew what I was doing. It isn't at "always just works" yet. -- Rich ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug