I have one other very strange event happening, I've opened a ticket on it: http://tracker.ceph.com/issues/14766
During this migration, OSD failed probably over 400 times while moving data around. We move the empty directories and restarted the OSDs. I can't say if this is related--I have no reason to suspect it is. Jeff On Mon, Mar 7, 2016 at 5:31 PM, Shinobu Kinjo <shinobu...@gmail.com> wrote: > What could cause this kind of unexpected behaviour? > Any assumption?? > Sorry for interrupting you. > > Cheers, > S > > On Tue, Mar 8, 2016 at 8:19 AM, Samuel Just <sj...@redhat.com> wrote: > > Hmm, at the end of the log, the pg is still inconsistent. Can you > > attach a ceph pg query on that pg? > > -Sam > > > > On Mon, Mar 7, 2016 at 3:05 PM, Samuel Just <sj...@redhat.com> wrote: > >> If so, that strongly suggests that the pg was actually never > >> inconsistent in the first place and that the bug is in scrub itself > >> presumably getting confused about an object during a write. The next > >> step would be to get logs like the above from a pg as it scrubs > >> transitioning from clean to inconsistent. If it's really a race > >> between scrub and a write, it's probably just non-deterministic, you > >> could set logging on a set of osds and continuously scrub any pgs > >> which only map to those osds until you reproduce the problem. > >> -Sam > >> > >> On Mon, Mar 7, 2016 at 2:44 PM, Samuel Just <sj...@redhat.com> wrote: > >>> So after the scrub, it came up clean? The inconsistent/missing > >>> objects reappeared? > >>> -Sam > >>> > >>> On Mon, Mar 7, 2016 at 2:33 PM, Jeffrey McDonald <jmcdo...@umn.edu> > wrote: > >>>> Hi Sam, > >>>> > >>>> I've done as you requested: > >>>> > >>>> pg 70.459 is active+clean+inconsistent, acting > [307,210,273,191,132,450] > >>>> > >>>> # for i in 307 210 273 191 132 450 ; do > >>>>> ceph tell osd.$i injectargs '--debug-osd 20 --debug-filestore 20 > >>>>> --debug-ms 1' > >>>>> done > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> debug_osd=20/20 debug_filestore=20/20 debug_ms=1/1 > >>>> > >>>> > >>>> # date > >>>> Mon Mar 7 16:03:38 CST 2016 > >>>> > >>>> > >>>> # ceph pg deep-scrub 70.459 > >>>> instructing pg 70.459 on osd.307 to deep-scrub > >>>> > >>>> > >>>> > >>>> Scrub finished around > >>>> > >>>> # date > >>>> Mon Mar 7 16:13:03 CST 2016 > >>>> > >>>> > >>>> > >>>> > >>>> I've tar'd+gziped the files which can be downloaded from here. The > logs > >>>> start a minute or two after today at 16:00. > >>>> > >>>> > https://drive.google.com/folderview?id=0Bzz8TrxFvfema2NQUmotd1BOTnM&usp=sharing > >>>> > >>>> > >>>> Oddly(to me anyways), this pg is now active+clean: > >>>> > >>>> # ceph pg dump | grep 70.459 > >>>> dumped all in format plain > >>>> 70.459 21377 0 0 0 0 64515446306 3088 3088 active+clean 2016-03-07 > >>>> 16:26:57.796537 279563'212832 279602:628151 [307,210,273,191,132,450] > 307 > >>>> [307,210,273,191,132,450] 307 279563'212832 2016-03-07 16:12:30.741984 > >>>> 279563'212832 2016-03-07 16:12:30.741984 > >>>> > >>>> > >>>> > >>>> Regards, > >>>> Jeff > >>>> > >>>> > >>>> On Mon, Mar 7, 2016 at 4:11 PM, Samuel Just <sj...@redhat.com> wrote: > >>>>> > >>>>> I think the unfound object on repair is fixed by > >>>>> d51806f5b330d5f112281fbb95ea6addf994324e (not in hammer yet). I > >>>>> opened http://tracker.ceph.com/issues/15002 for the backport and to > >>>>> make sure it's covered in ceph-qa-suite. No idea at this time why > the > >>>>> objects are disappearing though. > >>>>> -Sam > >>>>> > >>>>> On Mon, Mar 7, 2016 at 1:57 PM, Samuel Just <sj...@redhat.com> > wrote: > >>>>> > The one just scrubbed and now inconsistent. > >>>>> > -Sam > >>>>> > > >>>>> > On Mon, Mar 7, 2016 at 1:57 PM, Jeffrey McDonald <jmcdo...@umn.edu > > > >>>>> > wrote: > >>>>> >> Do you want me to enable this for the pg already with unfound > objects > >>>>> >> or the > >>>>> >> placement group just scrubbed and now inconsistent? > >>>>> >> Jeff > >>>>> >> > >>>>> >> On Mon, Mar 7, 2016 at 3:54 PM, Samuel Just <sj...@redhat.com> > wrote: > >>>>> >>> > >>>>> >>> Can you enable > >>>>> >>> > >>>>> >>> debug osd = 20 > >>>>> >>> debug filestore = 20 > >>>>> >>> debug ms = 1 > >>>>> >>> > >>>>> >>> on all osds in that PG, rescrub, and convey to us the resulting > logs? > >>>>> >>> -Sam > >>>>> >>> > >>>>> >>> On Mon, Mar 7, 2016 at 1:36 PM, Jeffrey McDonald < > jmcdo...@umn.edu> > >>>>> >>> wrote: > >>>>> >>> > Here is a PG which just went inconsistent: > >>>>> >>> > > >>>>> >>> > pg 70.459 is active+clean+inconsistent, acting > >>>>> >>> > [307,210,273,191,132,450] > >>>>> >>> > > >>>>> >>> > Attached is the result of a pg query on this. I will wait > for your > >>>>> >>> > feedback before issuing a repair. > >>>>> >>> > > >>>>> >>> > From what I read, the inconsistencies are more likely the > result of > >>>>> >>> > ntp, > >>>>> >>> > but > >>>>> >>> > all nodes have the local ntp master and all are showing sync. > >>>>> >>> > > >>>>> >>> > Regards, > >>>>> >>> > Jeff > >>>>> >>> > > >>>>> >>> > On Mon, Mar 7, 2016 at 3:15 PM, Gregory Farnum < > gfar...@redhat.com> > >>>>> >>> > wrote: > >>>>> >>> >> > >>>>> >>> >> [ Keeping this on the users list. ] > >>>>> >>> >> > >>>>> >>> >> Okay, so next time this happens you probably want to do a pg > query > >>>>> >>> >> on > >>>>> >>> >> the PG which has been reported as dirty. I can't help much > beyond > >>>>> >>> >> that, but hopefully Kefu or David will chime in once there's a > >>>>> >>> >> little > >>>>> >>> >> more for them to look at. > >>>>> >>> >> -Greg > >>>>> >>> >> > >>>>> >>> >> On Mon, Mar 7, 2016 at 1:00 PM, Jeffrey McDonald < > jmcdo...@umn.edu> > >>>>> >>> >> wrote: > >>>>> >>> >> > Hi Greg, > >>>>> >>> >> > > >>>>> >>> >> > I'm running the ceph version hammer, > >>>>> >>> >> > ceph version 0.94.5 > (9764da52395923e0b32908d83a9f7304401fee43) > >>>>> >>> >> > > >>>>> >>> >> > The hardware migration was performed by just setting the > crush > >>>>> >>> >> > map to > >>>>> >>> >> > zero > >>>>> >>> >> > for the OSD we wanted to retire. The system was performing > >>>>> >>> >> > poorly > >>>>> >>> >> > with > >>>>> >>> >> > these older OSDs and we had a difficult time maintaining > >>>>> >>> >> > stability of > >>>>> >>> >> > the > >>>>> >>> >> > system. The old OSDs are still there but all of the data > is > >>>>> >>> >> > now > >>>>> >>> >> > migrated > >>>>> >>> >> > to new and/or existing hardware. > >>>>> >>> >> > > >>>>> >>> >> > Thanks, > >>>>> >>> >> > Jeff > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > On Mon, Mar 7, 2016 at 2:56 PM, Gregory Farnum > >>>>> >>> >> > <gfar...@redhat.com> > >>>>> >>> >> > wrote: > >>>>> >>> >> >> > >>>>> >>> >> >> On Mon, Mar 7, 2016 at 12:07 PM, Jeffrey McDonald > >>>>> >>> >> >> <jmcdo...@umn.edu> > >>>>> >>> >> >> wrote: > >>>>> >>> >> >> > Hi, > >>>>> >>> >> >> > > >>>>> >>> >> >> > For a while, we've been seeing inconsistent placement > groups > >>>>> >>> >> >> > on > >>>>> >>> >> >> > our > >>>>> >>> >> >> > erasure > >>>>> >>> >> >> > coded system. The placement groups go from a state of > >>>>> >>> >> >> > active+clean > >>>>> >>> >> >> > to > >>>>> >>> >> >> > active+clean+inconsistent after a deep scrub: > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > 2016-03-07 13:45:42.044131 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320s0 deep-scrub stat mismatch, got 21446/21428 > objects, > >>>>> >>> >> >> > 0/0 > >>>>> >>> >> >> > clones, > >>>>> >>> >> >> > 21446/21428 dirty, 0/0 omap, 0/0 hit_set_archive, 0/0 > >>>>> >>> >> >> > whiteouts, > >>>>> >>> >> >> > 64682334170/64624353083 bytes,0/0 hit_set_archive bytes. > >>>>> >>> >> >> > 2016-03-07 13:45:42.044416 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320s0 deep-scrub 18 missing, 0 inconsistent objects > >>>>> >>> >> >> > 2016-03-07 13:45:42.044464 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320 deep-scrub 73 errors > >>>>> >>> >> >> > > >>>>> >>> >> >> > So I tell the placement group to perform a repair: > >>>>> >>> >> >> > > >>>>> >>> >> >> > 2016-03-07 13:49:26.047177 7f385d118700 0 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [INF] : > >>>>> >>> >> >> > 70.320 repair starts > >>>>> >>> >> >> > 2016-03-07 13:49:57.087291 7f3858b0a700 0 -- > >>>>> >>> >> >> > 10.31.0.2:6874/13937 > >>>>> >>> >> >> > >> > >>>>> >>> >> >> > 10.31.0.6:6824/8127 pipe(0x2e578000 sd=697 :6874 > >>>>> >>> >> >> > > >>>>> >>> >> >> > The repair finds missing shards and repairs them, but > then I > >>>>> >>> >> >> > have > >>>>> >>> >> >> > 18 > >>>>> >>> >> >> > 'unfound objects' : > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > 2016-03-07 13:51:28.467590 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320s0 repair stat mismatch, got 21446/21428 objects, > 0/0 > >>>>> >>> >> >> > clones, > >>>>> >>> >> >> > 21446/21428 dirty, 0/0 omap, 0/0 hit_set_archive, 0/0 > >>>>> >>> >> >> > whiteouts, > >>>>> >>> >> >> > 64682334170/64624353083 bytes,0/0 hit_set_archive bytes. > >>>>> >>> >> >> > 2016-03-07 13:51:28.468358 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320s0 repair 18 missing, 0 inconsistent objects > >>>>> >>> >> >> > 2016-03-07 13:51:28.469431 7f385d118700 -1 > >>>>> >>> >> >> > log_channel(cluster) > >>>>> >>> >> >> > log > >>>>> >>> >> >> > [ERR] : > >>>>> >>> >> >> > 70.320 repair 73 errors, 73 fixed > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > I've traced one of the unfound objects all the way > through the > >>>>> >>> >> >> > system > >>>>> >>> >> >> > and > >>>>> >>> >> >> > I've found that they are not really lost. I can fail > over > >>>>> >>> >> >> > the > >>>>> >>> >> >> > osd > >>>>> >>> >> >> > and > >>>>> >>> >> >> > recover the files. This is happening quite regularly > now > >>>>> >>> >> >> > after a > >>>>> >>> >> >> > large > >>>>> >>> >> >> > migration of data from old hardware to new(migration is > now > >>>>> >>> >> >> > complete). > >>>>> >>> >> >> > > >>>>> >>> >> >> > The system sets the PG into 'recovery', but we've seen > the > >>>>> >>> >> >> > system > >>>>> >>> >> >> > in > >>>>> >>> >> >> > a > >>>>> >>> >> >> > recovering state for many days. Should we just be > patient > >>>>> >>> >> >> > or do > >>>>> >>> >> >> > we > >>>>> >>> >> >> > need > >>>>> >>> >> >> > to dig further into the issue? > >>>>> >>> >> >> > >>>>> >>> >> >> You may need to dig into this more, although I'm not sure > what > >>>>> >>> >> >> the > >>>>> >>> >> >> issue is likely to be. What version of Ceph are you > running? How > >>>>> >>> >> >> did > >>>>> >>> >> >> you do this hardware migration? > >>>>> >>> >> >> -Greg > >>>>> >>> >> >> > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > pg 70.320 is stuck unclean for 704.803040, current state > >>>>> >>> >> >> > active+recovering, > >>>>> >>> >> >> > last acting [277,101,218,49,304,412] > >>>>> >>> >> >> > pg 70.320 is active+recovering, acting > >>>>> >>> >> >> > [277,101,218,49,304,412], > >>>>> >>> >> >> > 18 > >>>>> >>> >> >> > unfound > >>>>> >>> >> >> > > >>>>> >>> >> >> > There is no indication of any problems with down OSDs or > >>>>> >>> >> >> > network > >>>>> >>> >> >> > issues > >>>>> >>> >> >> > with > >>>>> >>> >> >> > OSDs. > >>>>> >>> >> >> > > >>>>> >>> >> >> > Thanks, > >>>>> >>> >> >> > Jeff > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > -- > >>>>> >>> >> >> > > >>>>> >>> >> >> > Jeffrey McDonald, PhD > >>>>> >>> >> >> > Assistant Director for HPC Operations > >>>>> >>> >> >> > Minnesota Supercomputing Institute > >>>>> >>> >> >> > University of Minnesota Twin Cities > >>>>> >>> >> >> > 599 Walter Library email: > >>>>> >>> >> >> > jeffrey.mcdon...@msi.umn.edu > >>>>> >>> >> >> > 117 Pleasant St SE phone: +1 612 625-6905 > >>>>> >>> >> >> > Minneapolis, MN 55455 fax: +1 612 624-8861 > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > > >>>>> >>> >> >> > _______________________________________________ > >>>>> >>> >> >> > ceph-users mailing list > >>>>> >>> >> >> > ceph-users@lists.ceph.com > >>>>> >>> >> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>> >>> >> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> >> > -- > >>>>> >>> >> > > >>>>> >>> >> > Jeffrey McDonald, PhD > >>>>> >>> >> > Assistant Director for HPC Operations > >>>>> >>> >> > Minnesota Supercomputing Institute > >>>>> >>> >> > University of Minnesota Twin Cities > >>>>> >>> >> > 599 Walter Library email: > jeffrey.mcdon...@msi.umn.edu > >>>>> >>> >> > 117 Pleasant St SE phone: +1 612 625-6905 > >>>>> >>> >> > Minneapolis, MN 55455 fax: +1 612 624-8861 > >>>>> >>> >> > > >>>>> >>> >> > > >>>>> >>> > > >>>>> >>> > > >>>>> >>> > > >>>>> >>> > > >>>>> >>> > -- > >>>>> >>> > > >>>>> >>> > Jeffrey McDonald, PhD > >>>>> >>> > Assistant Director for HPC Operations > >>>>> >>> > Minnesota Supercomputing Institute > >>>>> >>> > University of Minnesota Twin Cities > >>>>> >>> > 599 Walter Library email: > jeffrey.mcdon...@msi.umn.edu > >>>>> >>> > 117 Pleasant St SE phone: +1 612 625-6905 > >>>>> >>> > Minneapolis, MN 55455 fax: +1 612 624-8861 > >>>>> >>> > > >>>>> >>> > > >>>>> >>> > > >>>>> >>> > _______________________________________________ > >>>>> >>> > ceph-users mailing list > >>>>> >>> > ceph-users@lists.ceph.com > >>>>> >>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>> >>> > > >>>>> >> > >>>>> >> > >>>>> >> > >>>>> >> > >>>>> >> -- > >>>>> >> > >>>>> >> Jeffrey McDonald, PhD > >>>>> >> Assistant Director for HPC Operations > >>>>> >> Minnesota Supercomputing Institute > >>>>> >> University of Minnesota Twin Cities > >>>>> >> 599 Walter Library email: jeffrey.mcdon...@msi.umn.edu > >>>>> >> 117 Pleasant St SE phone: +1 612 625-6905 > >>>>> >> Minneapolis, MN 55455 fax: +1 612 624-8861 > >>>>> >> > >>>>> >> > >>>> > >>>> > >>>> > >>>> > >>>> -- > >>>> > >>>> Jeffrey McDonald, PhD > >>>> Assistant Director for HPC Operations > >>>> Minnesota Supercomputing Institute > >>>> University of Minnesota Twin Cities > >>>> 599 Walter Library email: jeffrey.mcdon...@msi.umn.edu > >>>> 117 Pleasant St SE phone: +1 612 625-6905 > >>>> Minneapolis, MN 55455 fax: +1 612 624-8861 > >>>> > >>>> > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > -- > Email: > shin...@linux.com > GitHub: > shinobu-x > Blog: > Life with Distributed Computational System based on OpenSource > -- Jeffrey McDonald, PhD Assistant Director for HPC Operations Minnesota Supercomputing Institute University of Minnesota Twin Cities 599 Walter Library email: jeffrey.mcdon...@msi.umn.edu 117 Pleasant St SE phone: +1 612 625-6905 Minneapolis, MN 55455 fax: +1 612 624-8861
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