On Tue, 6 Dec 2016, Dan van der Ster wrote: > 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). Hmm, I thought that 'noscrub' would also stop deep scrubs, but I just looked at the code and I was wrong. So you should set nodeep-scrub too! sage > > 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 > _______________________________________________ > 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
