Yep, just as before. Actually, do it twice (wait for 'scrubbing' to go away each time). -Sam On Mon, Mar 7, 2016 at 5:25 PM, Jeffrey McDonald <jmcdonal@xxxxxxx> wrote: > Just to be sure I grab what you need: > > 1- set debug logs for the pg 70.459 > 2 - Issue a deep-scrub ceph pg deep-scrub 70.459 > 3- stop once the 70.459 pg goes inconsistent? > > Thanks, > Jeff > > > On Mon, Mar 7, 2016 at 6:52 PM, Samuel Just <sjust@xxxxxxxxxx> wrote: >> >> Hmm, I'll look into this a bit more tomorrow. Can you get the tree >> structure of the 70.459 pg directory on osd.307 (find . will do fine). >> -Sam >> >> On Mon, Mar 7, 2016 at 4:50 PM, Jeffrey McDonald <jmcdonal@xxxxxxx> wrote: >> > 307 is on ceph03. >> > Jeff >> > >> > On Mon, Mar 7, 2016 at 6:48 PM, Samuel Just <sjust@xxxxxxxxxx> wrote: >> >> >> >> Which node is osd.307 on? >> >> -Sam >> >> >> >> On Mon, Mar 7, 2016 at 4:43 PM, Samuel Just <sjust@xxxxxxxxxx> wrote: >> >> > ' I didn't see the errors in the tracker on the new nodes, but they >> >> > were only receiving new data, not migrating it.' -- What do you mean >> >> > by that? >> >> > -Sam >> >> > >> >> > On Mon, Mar 7, 2016 at 4:42 PM, Jeffrey McDonald <jmcdonal@xxxxxxx> >> >> > wrote: >> >> >> The filesystem is xfs everywhere, there are nine hosts. The two >> >> >> new >> >> >> ceph >> >> >> nodes 08, 09 have a new kernel. I didn't see the errors in the >> >> >> tracker on >> >> >> the new nodes, but they were only receiving new data, not migrating >> >> >> it. >> >> >> Jeff >> >> >> >> >> >> ceph2: Linux ceph2 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC >> >> >> 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph1: Linux ceph1 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC >> >> >> 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph3: Linux ceph3 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC >> >> >> 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph03: Linux ceph03 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph01: Linux ceph01 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph02: Linux ceph02 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph06: Linux ceph06 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph05: Linux ceph05 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph04: Linux ceph04 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph08: Linux ceph08 3.19.0-51-generic #58~14.04.1-Ubuntu SMP Fri >> >> >> Feb >> >> >> 26 >> >> >> 22:02:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph07: Linux ceph07 3.13.0-65-generic #106-Ubuntu SMP Fri Oct 2 >> >> >> 22:08:27 >> >> >> UTC 2015 x86_64 x86_64 x86_64 GNU/Linux >> >> >> ceph09: Linux ceph09 3.19.0-51-generic #58~14.04.1-Ubuntu SMP Fri >> >> >> Feb >> >> >> 26 >> >> >> 22:02:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux >> >> >> >> >> >> >> >> >> On Mon, Mar 7, 2016 at 6:39 PM, Samuel Just <sjust@xxxxxxxxxx> >> >> >> wrote: >> >> >>> >> >> >>> What filesystem and kernel are you running on the osds? This (and >> >> >>> your other bug, actually) could be explained by some kind of weird >> >> >>> kernel readdir behavior. >> >> >>> -Sam >> >> >>> >> >> >>> On Mon, Mar 7, 2016 at 4:36 PM, Samuel Just <sjust@xxxxxxxxxx> >> >> >>> wrote: >> >> >>> > Hmm, so much for that theory, still looking. If you can produce >> >> >>> > another set of logs (as before) from scrubbing that pg, it might >> >> >>> > help. >> >> >>> > -Sam >> >> >>> > >> >> >>> > On Mon, Mar 7, 2016 at 4:34 PM, Jeffrey McDonald >> >> >>> > <jmcdonal@xxxxxxx> >> >> >>> > wrote: >> >> >>> >> they're all the same.....see attached. >> >> >>> >> >> >> >>> >> On Mon, Mar 7, 2016 at 6:31 PM, Samuel Just <sjust@xxxxxxxxxx> >> >> >>> >> wrote: >> >> >>> >>> >> >> >>> >>> Have you confirmed the versions? >> >> >>> >>> -Sam >> >> >>> >>> >> >> >>> >>> On Mon, Mar 7, 2016 at 4:29 PM, Jeffrey McDonald >> >> >>> >>> <jmcdonal@xxxxxxx> >> >> >>> >>> wrote: >> >> >>> >>> > 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.kj@xxxxxxxxx> >> >> >>> >>> > 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 >> >> >>> >>> >> <sjust@xxxxxxxxxx> >> >> >>> >>> >> 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 >> >> >>> >>> >> > <sjust@xxxxxxxxxx> >> >> >>> >>> >> > 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 >> >> >>> >>> >> >> <sjust@xxxxxxxxxx> >> >> >>> >>> >> >> 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 >> >> >>> >>> >> >>> <jmcdonal@xxxxxxx> >> >> >>> >>> >> >>> 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 >> >> >>> >>> >> >>>> <sjust@xxxxxxxxxx> >> >> >>> >>> >> >>>> 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 >> >> >>> >>> >> >>>>> <sjust@xxxxxxxxxx> >> >> >>> >>> >> >>>>> wrote: >> >> >>> >>> >> >>>>> > The one just scrubbed and now inconsistent. >> >> >>> >>> >> >>>>> > -Sam >> >> >>> >>> >> >>>>> > >> >> >>> >>> >> >>>>> > On Mon, Mar 7, 2016 at 1:57 PM, Jeffrey McDonald >> >> >>> >>> >> >>>>> > <jmcdonal@xxxxxxx> >> >> >>> >>> >> >>>>> > 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 >> >> >>> >>> >> >>>>> >> <sjust@xxxxxxxxxx> >> >> >>> >>> >> >>>>> >> 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 >> >> >>> >>> >> >>>>> >>> <jmcdonal@xxxxxxx> >> >> >>> >>> >> >>>>> >>> 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 >> >> >>> >>> >> >>>>> >>> > <gfarnum@xxxxxxxxxx> >> >> >>> >>> >> >>>>> >>> > 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 >> >> >>> >>> >> >>>>> >>> >> <jmcdonal@xxxxxxx> >> >> >>> >>> >> >>>>> >>> >> 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 >> >> >>> >>> >> >>>>> >>> >> > <gfarnum@xxxxxxxxxx> >> >> >>> >>> >> >>>>> >>> >> > wrote: >> >> >>> >>> >> >>>>> >>> >> >> >> >> >>> >>> >> >>>>> >>> >> >> On Mon, Mar 7, 2016 at 12:07 PM, Jeffrey >> >> >>> >>> >> >>>>> >>> >> >> McDonald >> >> >>> >>> >> >>>>> >>> >> >> <jmcdonal@xxxxxxx> >> >> >>> >>> >> >>>>> >>> >> >> 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> >> >>>>> >>> >> >> > 117 Pleasant St SE phone: +1 612 >> >> >>> >>> >> >>>>> >>> >> >> > 625-6905 >> >> >>> >>> >> >>>>> >>> >> >> > Minneapolis, MN 55455 fax: +1 612 >> >> >>> >>> >> >>>>> >>> >> >> > 624-8861 >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > _______________________________________________ >> >> >>> >>> >> >>>>> >>> >> >> > ceph-users mailing list >> >> >>> >>> >> >>>>> >>> >> >> > ceph-users@xxxxxxxxxxxxxx >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > >> >> >>> >>> >> >>>>> >>> >> >> > 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> >> >>>>> >>> >> > 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> >> >>>>> >>> > 117 Pleasant St SE phone: +1 612 >> >> >>> >>> >> >>>>> >>> > 625-6905 >> >> >>> >>> >> >>>>> >>> > Minneapolis, MN 55455 fax: +1 612 >> >> >>> >>> >> >>>>> >>> > 624-8861 >> >> >>> >>> >> >>>>> >>> > >> >> >>> >>> >> >>>>> >>> > >> >> >>> >>> >> >>>>> >>> > >> >> >>> >>> >> >>>>> >>> > _______________________________________________ >> >> >>> >>> >> >>>>> >>> > ceph-users mailing list >> >> >>> >>> >> >>>>> >>> > ceph-users@xxxxxxxxxxxxxx >> >> >>> >>> >> >>>>> >>> > >> >> >>> >>> >> >>>>> >>> > >> >> >>> >>> >> >>>>> >>> > 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> >> >>>>> >> 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> >> >>>> 117 Pleasant St SE phone: +1 612 625-6905 >> >> >>> >>> >> >>>> Minneapolis, MN 55455 fax: +1 612 624-8861 >> >> >>> >>> >> >>>> >> >> >>> >>> >> >>>> >> >> >>> >>> >> > _______________________________________________ >> >> >>> >>> >> > ceph-users mailing list >> >> >>> >>> >> > ceph-users@xxxxxxxxxxxxxx >> >> >>> >>> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >>> >>> >> >> >> >>> >>> >> >> >> >>> >>> >> >> >> >>> >>> >> -- >> >> >>> >>> >> Email: >> >> >>> >>> >> shinobu@xxxxxxxxx >> >> >>> >>> >> 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.mcdonald@xxxxxxxxxxx >> >> >>> >>> > 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.mcdonald@xxxxxxxxxxx >> >> >>> >> 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.mcdonald@xxxxxxxxxxx >> >> >> 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.mcdonald@xxxxxxxxxxx >> > 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.mcdonald@xxxxxxxxxxx > 117 Pleasant St SE phone: +1 612 625-6905 > Minneapolis, MN 55455 fax: +1 612 624-8861 > > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |