Hi Sage, Could you please clarify: do we need to set nodeep-scrub also, or does this somehow only affect the (shallow) scrub? (Note that deep scrubs will start when the deep_scrub_interval has passed, even with noscrub set). Cheers, Dan On Tue, Nov 15, 2016 at 11:35 PM, Sage Weil <sweil@xxxxxxxxxx> wrote: > Hi everyone, > > There was a regression in jewel that can trigger long OSD stalls during > scrub. How long the stalls are depends on how many objects are in your > PGs, how fast your storage device is, and what is cached, but in at least > one case they were long enough that the OSD internal heartbeat check > failed and it committed suicide (120 seconds). > > The workaround for now is to simply > > ceph osd set noscrub > > as the bug is only triggered by scrub. A fix is being tested and will be > available shortly. > > If you've seen any kind of weird latencies or slow requests on jewel, I > suggest setting noscrub and seeing if they go away! > > The tracker bug is > > http://tracker.ceph.com/issues/17859 > > Big thanks to Yoann Moulin for helping track this down! > > sage > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
