I have three more pgs now showing up as inconsistent. Should I turn on debug for all OSDs to capture the transition from active+clean -> inconsistent? Do I understand correction that the repair cause the 'unfound' objects because of a bug in the repair command? Regards, Jeff
On Mon, Mar 7, 2016 at 6:36 PM, Samuel Just <sj...@redhat.com> 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 <jmcdo...@umn.edu> wrote: > > they're all the same.....see attached. > > > > On Mon, Mar 7, 2016 at 6:31 PM, Samuel Just <sj...@redhat.com> wrote: > >> > >> Have you confirmed the versions? > >> -Sam > >> > >> On Mon, Mar 7, 2016 at 4:29 PM, Jeffrey McDonald <jmcdo...@umn.edu> > 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...@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 > >> > > >> > > > > > > > > > > > -- > > > > 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
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