Re: [ceph-users] fs as btrfs and ceph journal

2014-07-28 Thread Mark Nelson
Perhaps Cristian is thinking of the clone from journal work that we were talking about last year: http://wiki.ceph.com/Planning/Sideboard/osd%3A_clone_from_journal_on_btrfs I think we never did much beyond Sage's test branch, and it didn't seem to help as much as you would hope. Speaking of wh

Re: [ceph-users] fs as btrfs and ceph journal

2014-07-28 Thread Gregory Farnum
It still helps; the journal does just as much work. Less of the work *can* be in the critical path for IO, but for most of the applications it will be. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com On Sat, Jul 26, 2014 at 2:18 AM, Cristian Falcas wrote: > Hello, > > I'm usin

[ceph-users] fs as btrfs and ceph journal

2014-07-25 Thread Cristian Falcas
Hello, I'm using btrfs for OSDs and want to know if it still helps to have the journal on a faster drive. From what I've read I'm under the impression that with btrfs journal, the OSD journal doesn't do much work anymore. Best regards, Cristian Falcas _