I too dislike the fact that it's not "native" (ie developed inside the Linux Kernel), and this is why I'm not sure this project is a good solution. The userbase is necessarily much lower it would be if this was native, so less tests, less feedbacks, and potentially less security. When I use ZFS on FreeBSD, I know it's widely used and tested. Since you can have multiple backend FS for your OSD inside a Ceph cluster, what I do know is a mix between your alternatives 1 and 2. XFS for now, and upgrade to BTRFS once it is ready. On a test cluster (1 MON, 6 OSDs), I started with XFS (for a few months), then moved it to BTRFS (without losing a single bit) for a few months, then had a problem with BTRFS snapshots (without playing with any kind of snapshot in Ceph, weird), then moved it back to XFS (without losing a single bit). -- Thomas Lemarchand Cloud Solutions SAS - Responsable des systèmes d'information On lun., 2014-12-29 at 23:20 +0900, Christian Balzer wrote: > Hello, > > On Mon, 29 Dec 2014 11:22:34 +0100 Thomas Lemarchand wrote: > > > Hi Christian, > > > > Sure ZFS is way more mature than Btrfs, but what is ZFS status in > > Linux ? > > > > I use ZFS on FreeBSD (72TB - 12 disks (2 vdevs RaidZ2) for backup > > purposes) and it works great, but it's something I would be afraid to do > > in Linux. > > > > You are aware of http://zfsonlinux.org/ ? > > And while I dislike the fact that ZFS is not (and probably never will be) > part of the official Linux kernel tree, this is as good as it gets. > > As I see it the alternatives are: > 1) wait for BTRFS to fully mature (good luck with that) > 2) use something tried and trusted (I use ext4) and hope that the Ceph > developers add the missing parts. > 3) wait for full ZFS support in Ceph. > > I'm going with 2 for now and am kinda hoping/waiting for 3. > > But as I wrote, even with ZFS as backing storage there would be some > things like deduplication that need to be handled in Ceph, not the layer > below. > > Christian > -- > Christian Balzer Network/Systems Engineer > chibi@xxxxxxx Global OnLine Japan/Fusion Communications > http://www.gol.com/ > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |