On 08/02/2017 01:25 PM, Austin S. Hemmelgarn wrote:
And this is a worst-case result of the fact that most distros added BTRFS support long before it was ready.
RedHat still advertises "Ceph", and given Ceph initially recommended btrfs as the filesystem to use for its nodes, it is interesting to read how clearly they recommend against btrfs now: http://docs.ceph.com/docs/master/rados/configuration/filesystem-recommendations/
We recommand against using btrfs due to the lack of a stable version to test against and frequent bugs in the ENOSPC handling.
German IT magazine "Golem" speculates that RedHat's decision is influenced by its recent acquisition of Permabit. But I don't really see how XFS or Permabit tackle the problem that if you need to create consistent backups of file systems while they are in use, block-device level snapshots damage the write performance big time. (That backup topic is the one reason we use btrfs for a lot of /home/ directories.) I understand that XFS is expected to get some COW-features in the future as well - but it remains to be seen what performance and robustness implications that will have on XFS. Regards, Lutz Vieweg -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
