On Tue, Oct 27, 2015 at 11:22 AM, Andras Pataki <[email protected]> wrote: > Hi Greg, > > No, unfortunately I haven¹t found any resolution to it. We are using > cephfs, the whole installation is on 0.94.4. What I did notice is that > performance is extremely poor when backfilling is happening. I wonder if > timeouts of some kind could cause PG¹s to get stuck in replay. I lowered > the Œosd max backfills¹ parameter today from the default 10 all the way > down to 1 to see if it improves things. Client read/write performance has > definitely improved since then, whether this improves the > Œstuck-in-replay¹ situation, I¹m still waiting to see.
Argh. Looks like known bug http://tracker.ceph.com/issues/13116. I've pushed a new branch hammer-pg-replay to the gitbuilders which backports that patch and ought to improve things if you're able to install that to test. (It's untested but I don't foresee any issues arising.) I've also added it to the backport queue. -Greg _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
