Hello, On Sat, 6 Sep 2014 17:10:11 +0200 Josef Johansson wrote: > We manage to go through the restore, but the performance degradation is > still there. > Manifesting itself how? > Looking through the OSDs to pinpoint a source of the degradation and > hoping the current load will be lowered. > You're the one looking at your cluster, the iostat, atop, iotop and whatnot data. If one particular OSD/disk stands out, investigate it, as per the "Good way to monitor detailed latency/throughput" thread. If you have a spare and idle machine that is identical to your storage nodes, you could run a fio benchmark on a disk there and then compare the results to that of your suspect disk after setting your cluster to noout and stopping that particular OSD. > I?m a bit afraid of doing the 0 to weight of an OSD, wouldn?t it be > tough if the degradation is still there afterwards? i.e. if I set back > the weight would it move back all the PGs? > Of course. Until you can determine that a specific OSD/disk is the culprit, don't do that. If you have the evidence, go ahead. Regards, Christian > Regards, > Josef > > On 06 Sep 2014, at 15:52, Josef Johansson <josef at oderland.se> wrote: > > > FWI I did restart the OSDs until I saw a server that made impact. > > Until that server stopped doing impact, I didn?t get lower in the > > number objects being degraded. After a while it was done with > > recovering that OSD and happily started with others. I guess I will be > > seeing the same behaviour when it gets to replicating the same PGs > > that were causing troubles the first time. > > > > On 06 Sep 2014, at 15:04, Josef Johansson <josef at oderland.se> wrote: > > > >> Actually, it only worked with restarting for a period of time to get > >> the recovering process going. Can?t get passed the 21k object mark. > >> > >> I?m uncertain if the disk really is messing this up right now as > >> well. So I?m not glad to start moving 300k objects around. > >> > >> Regards, > >> Josef > >> > >> On 06 Sep 2014, at 14:33, Josef Johansson <josef at oderland.se> wrote: > >> > >>> Hi, > >>> > >>> On 06 Sep 2014, at 13:53, Christian Balzer <chibi at gol.com> wrote: > >>> > >>>> > >>>> Hello, > >>>> > >>>> On Sat, 6 Sep 2014 13:37:25 +0200 Josef Johansson wrote: > >>>> > >>>>> Also putting this on the list. > >>>>> > >>>>> On 06 Sep 2014, at 13:36, Josef Johansson <josef at oderland.se> > >>>>> wrote: > >>>>> > >>>>>> Hi, > >>>>>> > >>>>>> Same issues again, but I think we found the drive that causes the > >>>>>> problems. > >>>>>> > >>>>>> But this is causing problems as it?s trying to do a recover to > >>>>>> that osd at the moment. > >>>>>> > >>>>>> So we?re left with the status message > >>>>>> > >>>>>> 2014-09-06 13:35:07.580007 mon.0 [INF] pgmap v12678802: 6860 pgs: > >>>>>> 6841 active+clean, 19 active+remapped+backfilling; 12299 GB data, > >>>>>> 36882 GB used, 142 TB / 178 TB avail; 1921KB/s rd, 192KB/s wr, > >>>>>> 74op/s; 41424/15131923 degraded (0.274%); recovering 0 o/s, > >>>>>> 2035KB/s > >>>>>> > >>>>>> > >>>>>> It?s improving, but way too slowly. If I restart the recovery > >>>>>> (ceph osd set no recovery /unset) it doesn?t change the osd what > >>>>>> I can see. > >>>>>> > >>>>>> Any ideas? > >>>>>> > >>>> I don't know the state of your cluster, i.e. what caused the > >>>> recovery to start (how many OSDs went down?). > >>> Performance degradation, databases are the worst impacted. It?s > >>> actually a OSD that we put in that?s causing it (removed it again > >>> though). So the cluster in itself is healthy. > >>> > >>>> If you have a replication of 3 and only one OSD was involved, what > >>>> is stopping you from taking that wonky drive/OSD out? > >>>> > >>> There?s data that goes missing if I do that, I guess I have to wait > >>> for the recovery process to complete before I can go any further, > >>> this is with rep 3. > >>>> If you don't know that or want to play it safe, how about setting > >>>> the weight of that OSD to 0? > >>>> While that will AFAICT still result in all primary PGs to be > >>>> evacuated off it, no more writes will happen to it and reads might > >>>> be faster. In either case, it shouldn't slow down the rest of your > >>>> cluster anymore. > >>>> > >>> That?s actually one idea I haven?t thought off, I wan?t to play it > >>> safe right now and hope that it goes up again, I actually found one > >>> wonky way of getting the recovery process from not stalling to a > >>> grind, and that was restarting OSDs. One at the time. > >>> > >>> Regards, > >>> Josef > >>>> Regards, > >>>> > >>>> Christian > >>>>>> Cheers, > >>>>>> Josef > >>>>>> > >>>>>> On 05 Sep 2014, at 11:26, Luis Periquito > >>>>>> <luis.periquito at ocado.com> wrote: > >>>>>> > >>>>>>> Only time I saw such behaviour was when I was deleting a big > >>>>>>> chunk of data from the cluster: all the client activity was > >>>>>>> reduced, the op/s were almost non-existent and there was > >>>>>>> unjustified delays all over the cluster. But all the disks were > >>>>>>> somewhat busy in atop/iotstat. > >>>>>>> > >>>>>>> > >>>>>>> On 5 September 2014 09:51, David <david at visions.se> wrote: > >>>>>>> Hi, > >>>>>>> > >>>>>>> Indeed strange. > >>>>>>> > >>>>>>> That output was when we had issues, seems that most operations > >>>>>>> were blocked / slow requests. > >>>>>>> > >>>>>>> A ?baseline? output is more like today: > >>>>>>> > >>>>>>> 2014-09-05 10:44:29.123681 mon.0 [INF] pgmap v12582759: 6860 pgs: > >>>>>>> 6860 active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9273KB/s rd, 24650KB/s wr, 2755op/s 2014-09-05 > >>>>>>> 10:44:30.125637 mon.0 [INF] pgmap v12582760: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9500KB/s rd, 20430KB/s wr, 2294op/s 2014-09-05 > >>>>>>> 10:44:31.139427 mon.0 [INF] pgmap v12582761: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9216KB/s rd, 20062KB/s wr, 2488op/s 2014-09-05 > >>>>>>> 10:44:32.144945 mon.0 [INF] pgmap v12582762: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 12511KB/s rd, 15739KB/s wr, 2488op/s 2014-09-05 > >>>>>>> 10:44:33.161210 mon.0 [INF] pgmap v12582763: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 18593KB/s rd, 14880KB/s wr, 2609op/s 2014-09-05 > >>>>>>> 10:44:34.187294 mon.0 [INF] pgmap v12582764: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 17720KB/s rd, 22964KB/s wr, 3257op/s 2014-09-05 > >>>>>>> 10:44:35.190785 mon.0 [INF] pgmap v12582765: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 19230KB/s rd, 18901KB/s wr, 3199op/s 2014-09-05 > >>>>>>> 10:44:36.213535 mon.0 [INF] pgmap v12582766: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 17630KB/s rd, 18855KB/s wr, 3131op/s 2014-09-05 > >>>>>>> 10:44:37.220052 mon.0 [INF] pgmap v12582767: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 12262KB/s rd, 18627KB/s wr, 2595op/s 2014-09-05 > >>>>>>> 10:44:38.233357 mon.0 [INF] pgmap v12582768: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 17697KB/s rd, 17572KB/s wr, 2156op/s 2014-09-05 > >>>>>>> 10:44:39.239409 mon.0 [INF] pgmap v12582769: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 20300KB/s rd, 19735KB/s wr, 2197op/s 2014-09-05 > >>>>>>> 10:44:40.260423 mon.0 [INF] pgmap v12582770: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 14656KB/s rd, 15460KB/s wr, 2199op/s 2014-09-05 > >>>>>>> 10:44:41.269736 mon.0 [INF] pgmap v12582771: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 8969KB/s rd, 11918KB/s wr, 1951op/s 2014-09-05 > >>>>>>> 10:44:42.276192 mon.0 [INF] pgmap v12582772: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 7272KB/s rd, 10644KB/s wr, 1832op/s 2014-09-05 > >>>>>>> 10:44:43.291817 mon.0 [INF] pgmap v12582773: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9316KB/s rd, 16610KB/s wr, 2412op/s 2014-09-05 > >>>>>>> 10:44:44.295469 mon.0 [INF] pgmap v12582774: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9257KB/s rd, 19953KB/s wr, 2633op/s 2014-09-05 > >>>>>>> 10:44:45.315774 mon.0 [INF] pgmap v12582775: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9718KB/s rd, 14298KB/s wr, 2101op/s 2014-09-05 > >>>>>>> 10:44:46.326783 mon.0 [INF] pgmap v12582776: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 20877KB/s rd, 12822KB/s wr, 2447op/s 2014-09-05 > >>>>>>> 10:44:47.327537 mon.0 [INF] pgmap v12582777: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 18447KB/s rd, 12945KB/s wr, 2226op/s 2014-09-05 > >>>>>>> 10:44:48.348725 mon.0 [INF] pgmap v12582778: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 15514KB/s rd, 19366KB/s wr, 1892op/s 2014-09-05 > >>>>>>> 10:44:49.357537 mon.0 [INF] pgmap v12582779: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16640KB/s rd, 19694KB/s wr, 1887op/s 2014-09-05 > >>>>>>> 10:44:50.365016 mon.0 [INF] pgmap v12582780: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9139KB/s rd, 10734KB/s wr, 1566op/s 2014-09-05 > >>>>>>> 10:44:51.385553 mon.0 [INF] pgmap v12582781: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 11493KB/s rd, 13827KB/s wr, 1928op/s 2014-09-05 > >>>>>>> 10:44:52.389189 mon.0 [INF] pgmap v12582782: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 12922KB/s rd, 12814KB/s wr, 1670op/s 2014-09-05 > >>>>>>> 10:44:53.403735 mon.0 [INF] pgmap v12582783: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 14880KB/s rd, 17532KB/s wr, 2145op/s 2014-09-05 > >>>>>>> 10:44:54.410581 mon.0 [INF] pgmap v12582784: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 15419KB/s rd, 19696KB/s wr, 2259op/s 2014-09-05 > >>>>>>> 10:44:55.420308 mon.0 [INF] pgmap v12582785: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 10964KB/s rd, 15739KB/s wr, 1701op/s 2014-09-05 > >>>>>>> 10:44:56.445017 mon.0 [INF] pgmap v12582786: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16195KB/s rd, 15554KB/s wr, 2444op/s 2014-09-05 > >>>>>>> 10:44:57.452136 mon.0 [INF] pgmap v12582787: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 15016KB/s rd, 16356KB/s wr, 2358op/s 2014-09-05 > >>>>>>> 10:44:58.465958 mon.0 [INF] pgmap v12582788: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 11668KB/s rd, 18443KB/s wr, 2029op/s 2014-09-05 > >>>>>>> 10:44:59.483462 mon.0 [INF] pgmap v12582789: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 12253KB/s rd, 10846KB/s wr, 1529op/s 2014-09-05 > >>>>>>> 10:45:00.492322 mon.0 [INF] pgmap v12582790: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 12247KB/s rd, 7084KB/s wr, 1464op/s 2014-09-05 > >>>>>>> 10:45:01.516581 mon.0 [INF] pgmap v12582791: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16460KB/s rd, 12089KB/s wr, 2537op/s 2014-09-05 > >>>>>>> 10:45:02.527110 mon.0 [INF] pgmap v12582792: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 13382KB/s rd, 15080KB/s wr, 2563op/s 2014-09-05 > >>>>>>> 10:45:03.538090 mon.0 [INF] pgmap v12582793: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 10902KB/s rd, 18745KB/s wr, 2863op/s 2014-09-05 > >>>>>>> 10:45:04.558261 mon.0 [INF] pgmap v12582794: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 10850KB/s rd, 15995KB/s wr, 2695op/s 2014-09-05 > >>>>>>> 10:45:05.565750 mon.0 [INF] pgmap v12582795: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 9636KB/s rd, 13262KB/s wr, 2372op/s 2014-09-05 > >>>>>>> 10:45:06.593984 mon.0 [INF] pgmap v12582796: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 18808KB/s rd, 19329KB/s wr, 3819op/s 2014-09-05 > >>>>>>> 10:45:07.595866 mon.0 [INF] pgmap v12582797: 6860 pgs: 6860 > >>>>>>> active+clean; 12253 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 21265KB/s rd, 20743KB/s wr, 3861op/s 2014-09-05 > >>>>>>> 10:45:08.624949 mon.0 [INF] pgmap v12582798: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 20114KB/s rd, 18543KB/s wr, 3248op/s 2014-09-05 > >>>>>>> 10:45:09.627901 mon.0 [INF] pgmap v12582799: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 14717KB/s rd, 15141KB/s wr, 2302op/s 2014-09-05 > >>>>>>> 10:45:10.643234 mon.0 [INF] pgmap v12582800: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 8328KB/s rd, 13950KB/s wr, 1919op/s 2014-09-05 > >>>>>>> 10:45:11.651602 mon.0 [INF] pgmap v12582801: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16978KB/s rd, 15921KB/s wr, 3377op/s 2014-09-05 > >>>>>>> 10:45:12.674819 mon.0 [INF] pgmap v12582802: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16471KB/s rd, 14034KB/s wr, 3379op/s 2014-09-05 > >>>>>>> 10:45:13.688080 mon.0 [INF] pgmap v12582803: 6860 pgs: 6860 > >>>>>>> active+clean; 12254 GB data, 36574 GB used, 142 TB / 178 TB > >>>>>>> avail; 16149KB/s rd, 12657KB/s wr, 2734op/s > >>>>>>> > >>>>>>> Aye, we actually saw latency on the disks go up a bit when we had > >>>>>>> 128GB of RAM on the OSDs and decided to beef them up to 256GB > >>>>>>> which helped. They?re running different workloads (shared > >>>>>>> hosting) but we?ve never encountered the issue we had yesterday > >>>>>>> even during our testing/benchmarking. > >>>>>>> > >>>>>>> Kind Regards, > >>>>>>> David > >>>>>>> > >>>>>>> 5 sep 2014 kl. 09:05 skrev Christian Balzer <chibi at gol.com>: > >>>>>>> > >>>>>>>> > >>>>>>>> Hello, > >>>>>>>> > >>>>>>>> On Fri, 5 Sep 2014 08:26:47 +0200 David wrote: > >>>>>>>> > >>>>>>>>> Hi, > >>>>>>>>> > >>>>>>>>> Sorry for the lack of information yesterday, this was "solved" > >>>>>>>>> after some 30 minutes, after having reloaded/restarted all osd > >>>>>>>>> daemons. Unfortunately we couldn?t pin point it to a single > >>>>>>>>> OSD or drive, all drives seemed ok, some had a bit higher > >>>>>>>>> latency and we tried to out / in them to see if it had any > >>>>>>>>> effect which it did not. > >>>>>>>>> > >>>>>>>> This is odd. > >>>>>>>> Having it "fixed" by restarting all OSDs would suggest either a > >>>>>>>> software problem (bug) with Ceph or some resource other than the > >>>>>>>> storage system being starved. But memory seems unlikely, even > >>>>>>>> with bloated, leaking OSD daemon. And CPU seems even less > >>>>>>>> likely. > >>>>>>>> > >>>>>>>>> The cluster consists of 3 mon servrers, 5 OSD servers with 10 > >>>>>>>>> enterprise HDDs backed with 2 S3700 SSDs for journals each. OSD > >>>>>>>>> servers have 256GB of RAM, 2x E5-2630 v2 @ 2.60GHz CPUs. > >>>>>>>>> > >>>>>>>>> The log that I posted yesterday was just a small taste of the > >>>>>>>>> full one ;) They were all pointing to different osd?s that > >>>>>>>>> they were waiting for. We?re also monitoring all of the VMs > >>>>>>>>> running on KVM, and we didn?t see any exceptional throughput > >>>>>>>>> or iops usage before or during this event. We were checking > >>>>>>>>> iostat etc and nothing was out of the ordinary.. > >>>>>>>>> > >>>>>>>>> Going to double check SMART and also see if we can off load > >>>>>>>>> some of the cluster in any way. If you have any other advice > >>>>>>>>> that?d be appreciated :) > >>>>>>>>> > >>>>>>>> If the mon output below is typical for your cluster (634KB/s rd, > >>>>>>>> 487KB/s wr, 90op/s) it should be able to handle that w/o > >>>>>>>> breaking a sweat. I guestimate it at about 13K write IOPS and > >>>>>>>> your reads should (after a while) come mostly from the nice big > >>>>>>>> pagecache you have on those 256GB RAM machines. > >>>>>>>> > >>>>>>>> Christian > >>>>>>>> > >>>>>>>>> Thanks for your help! > >>>>>>>>> > >>>>>>>>> Kind Regards, > >>>>>>>>> David > >>>>>>>>> > >>>>>>>>> 5 sep 2014 kl. 07:30 skrev Martin B Nielsen > >>>>>>>>> <martin at unity3d.com>: > >>>>>>>>> > >>>>>>>>>> Just echoing what Christian said. > >>>>>>>>>> > >>>>>>>>>> Also, iirc the "currently waiting for subobs on [" could also > >>>>>>>>>> mean a problem on those as it waits for ack from them (I might > >>>>>>>>>> remember wrong). > >>>>>>>>>> > >>>>>>>>>> If that is the case you might want to check in on osd 13 & 37 > >>>>>>>>>> as well. > >>>>>>>>>> > >>>>>>>>>> With the cluster load and size you should not have this > >>>>>>>>>> problem; I'm pretty sure you're dealing with a rogue/faulty > >>>>>>>>>> osd/node somewhere. > >>>>>>>>>> > >>>>>>>>>> Cheers, > >>>>>>>>>> Martin > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> On Fri, Sep 5, 2014 at 2:28 AM, Christian Balzer > >>>>>>>>>> <chibi at gol.com> wrote: On Thu, 4 Sep 2014 12:02:13 +0200 > >>>>>>>>>> David wrote: > >>>>>>>>>> > >>>>>>>>>>> Hi, > >>>>>>>>>>> > >>>>>>>>>>> We?re running a ceph cluster with version: > >>>>>>>>>>> > >>>>>>>>>>> 0.67.7-1~bpo70+1 > >>>>>>>>>>> > >>>>>>>>>>> All of a sudden we?re having issues with the cluster > >>>>>>>>>>> (running RBD images for kvm) with slow requests on all of > >>>>>>>>>>> the OSD servers. Any idea why and how to fix it? > >>>>>>>>>>> > >>>>>>>>>> You give us a Ceph version at least, but for anybody to make > >>>>>>>>>> guesses we need much more information than a log spew. > >>>>>>>>>> > >>>>>>>>>> How many nodes/OSDs, OS, hardware, OSD details (FS, journals > >>>>>>>>>> on SSDs), etc. > >>>>>>>>>> > >>>>>>>>>> Run atop (in a sufficiently large terminal) on all your nodes, > >>>>>>>>>> see if you can spot a bottleneck, like a disk being at 100% > >>>>>>>>>> all the time with a much higher avio than the others. > >>>>>>>>>> Looking at your logs, I'd pay particular attention to the disk > >>>>>>>>>> holding osd.22. > >>>>>>>>>> A single slow disk can bring a whole large cluster to a crawl. > >>>>>>>>>> If you're using a hardware controller with a battery backed up > >>>>>>>>>> cache, check if that is fine, loss of the battery would switch > >>>>>>>>>> from writeback to writethrough and massively slow down IOPS. > >>>>>>>>>> > >>>>>>>>>> Regards, > >>>>>>>>>> > >>>>>>>>>> Christian > >>>>>>>>>>> > >>>>>>>>>>> 2014-09-04 11:56:35.868521 mon.0 [INF] pgmap v12504451: 6860 > >>>>>>>>>>> pgs: 6860 active+clean; 12163 GB data, 36308 GB used, 142 > >>>>>>>>>>> TB / 178 TB avail; 634KB/s rd, 487KB/s wr, 90op/s 2014-09-04 > >>>>>>>>>>> 11:56:29.510270 osd.22 [WRN] 15 slow requests, 1 included > >>>>>>>>>>> below; oldest blocked for > >>>>>>>>>>>> 44.745754 secs 2014-09-04 11:56:29.510276 osd.22 [WRN] slow > >>>>>>>>>>>> request 30.999821 seconds > >>>>>>>>>>> old, received at 2014-09-04 11:55:58.510424: > >>>>>>>>>>> osd_op(client.10731617.0:81868956 > >>>>>>>>>>> rbd_data.967e022eb141f2.0000000000000e72 [write 0~4194304] > >>>>>>>>>>> 3.c585cebe e13901) v4 currently waiting for subops from > >>>>>>>>>>> [37,13] 2014-09-04 11:56:30.510528 osd.22 [WRN] 21 slow > >>>>>>>>>>> requests, 6 included below; oldest blocked for > 45.745989 > >>>>>>>>>>> secs 2014-09-04 11:56:30.510534 osd.22 [WRN] slow request > >>>>>>>>>>> 30.122555 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.387925: osd_op(client.13425082.0:11962345 > >>>>>>>>>>> rbd_data.54f24c3d1b58ba.0000000000003753 [stat,write > >>>>>>>>>>> 1114112~8192] 3.c9e49140 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [13,42] 2014-09-04 11:56:30.510537 osd.22 [WRN] > >>>>>>>>>>> slow request 30.122362 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.388118: osd_op(client.13425082.0:11962352 > >>>>>>>>>>> rbd_data.54f24c3d1b58ba.0000000000003753 [stat,write > >>>>>>>>>>> 1134592~4096] 3.c9e49140 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [13,42] 2014-09-04 11:56:30.510541 osd.22 [WRN] > >>>>>>>>>>> slow request 30.122298 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.388182: osd_op(client.13425082.0:11962353 > >>>>>>>>>>> rbd_data.54f24c3d1b58ba.0000000000003753 [stat,write > >>>>>>>>>>> 4046848~8192] 3.c9e49140 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [13,42] 2014-09-04 11:56:30.510544 osd.22 [WRN] > >>>>>>>>>>> slow request 30.121577 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.388903: osd_op(client.13425082.0:11962374 > >>>>>>>>>>> rbd_data.54f24c3d1b58ba.00000000000047f2 [stat,write > >>>>>>>>>>> 2527232~4096] 3.cd9a9015 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [45,1] 2014-09-04 11:56:30.510548 osd.22 [WRN] > >>>>>>>>>>> slow request 30.121518 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.388962: osd_op(client.13425082.0:11962375 > >>>>>>>>>>> rbd_data.54f24c3d1b58ba.00000000000047f2 [stat,write > >>>>>>>>>>> 3133440~4096] 3.cd9a9015 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [45,1] 2014-09-04 11:56:31.510706 osd.22 [WRN] > >>>>>>>>>>> 26 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 46.746163 secs 2014-09-04 11:56:31.510711 osd.22 [WRN] slow > >>>>>>>>>>> request 31.035418 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475236: osd_op(client.9266625.0:135900595 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2097152~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:31.510715 osd.22 [WRN] > >>>>>>>>>>> slow request 31.035335 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475319: osd_op(client.9266625.0:135900596 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2162688~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:31.510718 osd.22 [WRN] > >>>>>>>>>>> slow request 31.035270 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475384: osd_op(client.9266625.0:135900597 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2400256~16384] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:31.510721 osd.22 [WRN] > >>>>>>>>>>> slow request 31.035093 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475561: osd_op(client.9266625.0:135900598 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2420736~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:31.510724 osd.22 [WRN] > >>>>>>>>>>> slow request 31.034990 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475664: osd_op(client.9266625.0:135900599 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2428928~12288] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.510864 osd.22 [WRN] > >>>>>>>>>>> 28 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 47.746324 secs 2014-09-04 11:56:32.510871 osd.22 [WRN] slow > >>>>>>>>>>> request 32.035026 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475789: osd_op(client.9266625.0:135900600 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2453504~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.510876 osd.22 [WRN] > >>>>>>>>>>> slow request 32.034982 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475833: osd_op(client.9266625.0:135900601 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2502656~16384] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.510881 osd.22 [WRN] > >>>>>>>>>>> slow request 32.034917 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.475898: osd_op(client.9266625.0:135900602 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2600960~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.510885 osd.22 [WRN] > >>>>>>>>>>> slow request 32.034807 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476008: osd_op(client.9266625.0:135900603 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2617344~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.510890 osd.22 [WRN] > >>>>>>>>>>> slow request 32.034756 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476059: osd_op(client.9266625.0:135900604 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2637824~69632] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:32.723329 osd.17 [WRN] 4 > >>>>>>>>>>> slow requests, 4 included below; oldest blocked for > > >>>>>>>>>>> 30.605794 secs 2014-09-04 11:56:32.723335 osd.17 [WRN] slow > >>>>>>>>>>> request 30.605794 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.117495: osd_op(client.12646411.0:31118135 > >>>>>>>>>>> rbd_data.81aaf52eb141f2.0000000000000e4b [stat,write > >>>>>>>>>>> 0~4194304] 3.716b373b e13901) v4 currently waiting for > >>>>>>>>>>> subops from [31,1] 2014-09-04 11:56:32.723338 osd.17 [WRN] > >>>>>>>>>>> slow request 30.362042 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.361247: osd_op(client.12485793.0:121786489 > >>>>>>>>>>> rbd_data.4ae87f2eb141f2.000000000000e200 [stat,write > >>>>>>>>>>> 2834432~4096] 3.6b43de72 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [5,31] 2014-09-04 11:56:32.723341 osd.17 [WRN] > >>>>>>>>>>> slow request 30.179681 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.543608: osd_op(client.13425079.0:7014393 > >>>>>>>>>>> rbd_data.54f2522eb141f2.0000000000014d01 [stat,write > >>>>>>>>>>> 2502656~4096] 3.d8ceea89 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [31,18] 2014-09-04 11:56:32.723344 osd.17 [WRN] > >>>>>>>>>>> slow request 30.000568 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.722721: osd_op(client.9281279.0:144230325 > >>>>>>>>>>> rbd_data.2d99fc2eb141f2.000000000000e80a [stat,write > >>>>>>>>>>> 1589248~4096] 3.16dc0e89 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [31,18] 2014-09-04 11:56:33.511043 osd.22 [WRN] > >>>>>>>>>>> 33 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 48.746486 secs 2014-09-04 11:56:33.511049 osd.22 [WRN] slow > >>>>>>>>>>> request 33.034756 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476221: osd_op(client.9266625.0:135900605 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2715648~8192] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:33.511053 osd.22 [WRN] > >>>>>>>>>>> slow request 33.034620 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476357: osd_op(client.9266625.0:135900606 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2756608~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:33.511056 osd.22 [WRN] > >>>>>>>>>>> slow request 33.034446 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476531: osd_op(client.9266625.0:135900607 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2809856~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:33.511060 osd.22 [WRN] > >>>>>>>>>>> slow request 33.034387 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476590: osd_op(client.9266625.0:135900608 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2883584~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:33.511063 osd.22 [WRN] > >>>>>>>>>>> slow request 33.034341 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476636: osd_op(client.9266625.0:135900609 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2891776~8192] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:34.511206 osd.22 [WRN] > >>>>>>>>>>> 38 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 49.746664 secs 2014-09-04 11:56:34.511215 osd.22 [WRN] slow > >>>>>>>>>>> request 34.034426 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476729: osd_op(client.9266625.0:135900610 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2908160~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:34.511219 osd.22 [WRN] > >>>>>>>>>>> slow request 34.034298 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476857: osd_op(client.9266625.0:135900611 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2932736~28672] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:34.511222 osd.22 [WRN] > >>>>>>>>>>> slow request 34.034234 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.476921: osd_op(client.9266625.0:135900612 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2969600~8192] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:34.511225 osd.22 [WRN] > >>>>>>>>>>> slow request 34.034147 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477008: osd_op(client.9266625.0:135900613 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2981888~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:34.511228 osd.22 [WRN] > >>>>>>>>>>> slow request 34.034055 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477100: osd_op(client.9266625.0:135900614 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 2998272~12288] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:35.153813 osd.37 [WRN] 1 > >>>>>>>>>>> slow requests, 1 included below; oldest blocked for > > >>>>>>>>>>> 30.307864 secs 2014-09-04 11:56:35.153820 osd.37 [WRN] slow > >>>>>>>>>>> request 30.307864 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:04.845917: osd_op(client.10785413.0:129409910 > >>>>>>>>>>> rbd_data.96803f2eb141f2.00000000000042b0 [stat,write > >>>>>>>>>>> 1712128~4096] 3.6c5ac950 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [22,41] 2014-09-04 11:56:35.511450 osd.22 [WRN] > >>>>>>>>>>> 42 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 50.746638 secs 2014-09-04 11:56:35.511455 osd.22 [WRN] slow > >>>>>>>>>>> request 35.034219 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477178: osd_op(client.9266625.0:135900615 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 3022848~8192] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:35.511459 osd.22 [WRN] > >>>>>>>>>>> slow request 35.034143 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477254: osd_op(client.9266625.0:135900616 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 3035136~12288] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:35.511462 osd.22 [WRN] > >>>>>>>>>>> slow request 35.034082 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477315: osd_op(client.9266625.0:135900617 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 3055616~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:35.511465 osd.22 [WRN] > >>>>>>>>>>> slow request 35.033965 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:00.477432: osd_op(client.9266625.0:135900618 > >>>>>>>>>>> rbd_data.42d6792eb141f2.000000000000bc00 [stat,write > >>>>>>>>>>> 3063808~4096] 3.a2894ebe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:35.511469 osd.22 [WRN] > >>>>>>>>>>> slow request 34.162275 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:01.349122: osd_op(client.12485646.0:110385143 > >>>>>>>>>>> rbd_data.4ccab12eb141f2.0000000000015b66 [stat,write > >>>>>>>>>>> 909312~4096] 3.9c416abe e13901) v4 currently waiting for > >>>>>>>>>>> subops from [37,13] 2014-09-04 11:56:36.511603 osd.22 [WRN] > >>>>>>>>>>> 34 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 51.746797 secs 2014-09-04 11:56:36.511609 osd.22 [WRN] slow > >>>>>>>>>>> request 34.401476 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.110080: osd_op(client.12485643.0:117955489 > >>>>>>>>>>> rbd_data.4aad332eb141f2.0000000000002c00 [stat,write > >>>>>>>>>>> 2531328~4096] 3.b985ec92 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [33,1] 2014-09-04 11:56:36.511612 osd.22 [WRN] > >>>>>>>>>>> slow request 34.149511 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.362045: osd_op(client.12485793.0:121786505 > >>>>>>>>>>> rbd_data.4ae87f2eb141f2.0000000000018a0a [stat,write > >>>>>>>>>>> 3342336~4096] 3.26907492 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [33,1] 2014-09-04 11:56:36.511615 osd.22 [WRN] > >>>>>>>>>>> slow request 34.329528 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:02.182028: osd_op(client.12646411.0:31118266 > >>>>>>>>>>> rbd_data.81aaf52eb141f2.0000000000000e4f [stat,write > >>>>>>>>>>> 0~4194304] 3.168c978d e13901) v4 currently waiting for > >>>>>>>>>>> subops from [49,29] 2014-09-04 11:56:36.511618 osd.22 [WRN] > >>>>>>>>>>> slow request 31.871976 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:04.639580: osd_op(client.12485793.0:121786506 > >>>>>>>>>>> rbd_data.4ae87f2eb141f2.0000000000018a0a [stat,write 0~4096] > >>>>>>>>>>> 3.26907492 e13901) v4 currently waiting for subops from > >>>>>>>>>>> [33,1] 2014-09-04 11:56:36.511621 osd.22 [WRN] slow request > >>>>>>>>>>> 31.008867 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:05.502689: osd_op(client.9266625.0:135901516 > >>>>>>>>>>> rbd_data.42d6792eb141f2.0000000000017436 [stat,write > >>>>>>>>>>> 2682880~4096] 3.32067b97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] 2014-09-04 11:56:36.723882 osd.17 [WRN] > >>>>>>>>>>> 5 slow requests, 1 included below; oldest blocked for > > >>>>>>>>>>> 34.606349 secs 2014-09-04 11:56:36.723887 osd.17 [WRN] slow > >>>>>>>>>>> request 30.603057 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:06.120787: osd_op(client.12483520.0:11473870 > >>>>>>>>>>> rbd_data.4b8e9b3d1b58ba.0000000000004600 [stat,write > >>>>>>>>>>> 2293760~4096] 3.49398689 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [31,18] 2014-09-04 11:56:37.511787 osd.22 [WRN] > >>>>>>>>>>> 24 slow requests, 6 included below; oldest blocked for > > >>>>>>>>>>> 52.746984 secs 2014-09-04 11:56:37.511793 osd.22 [WRN] slow > >>>>>>>>>>> request 32.008986 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:05.502757: osd_op(client.9266625.0:135901517 > >>>>>>>>>>> rbd_data.42d6792eb141f2.0000000000017436 [stat,write > >>>>>>>>>>> 2695168~4096] 3.32067b97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] 2014-09-04 11:56:37.511798 osd.22 [WRN] > >>>>>>>>>>> slow request 31.749483 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:05.762260: osd_op(client.9281282.0:55728036 > >>>>>>>>>>> rbd_data.2d99f62eb141f2.0000000000003753 [stat,write > >>>>>>>>>>> 1630208~8192] 3.6625df97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] 2014-09-04 11:56:37.511801 osd.22 [WRN] > >>>>>>>>>>> slow request 31.745558 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:05.766185: osd_op(client.9281282.0:55728038 > >>>>>>>>>>> rbd_data.2d99f62eb141f2.0000000000003753 [stat,write > >>>>>>>>>>> 1941504~4096] 3.6625df97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] 2014-09-04 11:56:37.511803 osd.22 [WRN] > >>>>>>>>>>> slow request 31.390945 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:06.120798: osd_op(client.12483520.0:11473871 > >>>>>>>>>>> rbd_data.4b8e9b3d1b58ba.0000000000005c00 [stat,write > >>>>>>>>>>> 2424832~8192] 3.47dbbb97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] 2014-09-04 11:56:37.511806 osd.22 [WRN] > >>>>>>>>>>> slow request 31.390357 seconds old, received at 2014-09-04 > >>>>>>>>>>> 11:56:06.121386: osd_op(client.12483520.0:11473884 > >>>>>>>>>>> rbd_data.4b8e9b3d1b58ba.0000000000005c00 [stat,write > >>>>>>>>>>> 2457600~16384] 3.47dbbb97 e13901) v4 currently waiting for > >>>>>>>>>>> subops from [12,29] > >>>>>>>>>>> > >>>>>>>>>>> Kind Regards, > >>>>>>>>>>> > >>>>>>>>>>> David > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> _______________________________________________ > >>>>>>>>>>> ceph-users mailing list > >>>>>>>>>>> ceph-users at lists.ceph.com > >>>>>>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> > >>>>>>>>>> -- > >>>>>>>>>> Christian Balzer Network/Systems Engineer > >>>>>>>>>> chibi at gol.com Global OnLine Japan/Fusion > >>>>>>>>>> Communications http://www.gol.com/ > >>>>>>>>>> _______________________________________________ > >>>>>>>>>> ceph-users mailing list > >>>>>>>>>> ceph-users at lists.ceph.com > >>>>>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>>>>>> > >>>>>>>>>> _______________________________________________ > >>>>>>>>>> ceph-users mailing list > >>>>>>>>>> ceph-users at lists.ceph.com > >>>>>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> -- > >>>>>>>> Christian Balzer Network/Systems Engineer > >>>>>>>> chibi at gol.com Global OnLine Japan/Fusion Communications > >>>>>>>> http://www.gol.com/ > >>>>>>>> _______________________________________________ > >>>>>>>> ceph-users mailing list > >>>>>>>> ceph-users at lists.ceph.com > >>>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>>> > >>>>>>> _______________________________________________ > >>>>>>> ceph-users mailing list > >>>>>>> ceph-users at lists.ceph.com > >>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> -- > >>>>>>> Luis Periquito > >>>>>>> Unix Engineer > >>>>>>> > >>>>>>> Ocado.com > >>>>>>> > >>>>>>> Head Office, Titan Court, 3 Bishop Square, Hatfield Business > >>>>>>> Park, Hatfield, Herts AL10 9NE > >>>>>>> > >>>>>>> Notice: This email is confidential and may contain copyright > >>>>>>> material of members of the Ocado Group. Opinions and views > >>>>>>> expressed in this message may not necessarily reflect the > >>>>>>> opinions and views of the members of the Ocado Group. > >>>>>>> > >>>>>>> If you are not the intended recipient, please notify us > >>>>>>> immediately and delete all copies of this message. Please note > >>>>>>> that it is your responsibility to scan this message for viruses. > >>>>>>> > >>>>>>> References to the ?Ocado Group? are to Ocado Group plc > >>>>>>> (registered in England and Wales with number 7098618) and its > >>>>>>> subsidiary undertakings (as that expression is defined in the > >>>>>>> Companies Act 2006) from time to time. The registered office of > >>>>>>> Ocado Group plc is Titan Court, 3 Bishops Square, Hatfield > >>>>>>> Business Park, Hatfield, Herts. AL10 9NE. > >>>>>>> > >>>>>>> _______________________________________________ > >>>>>>> ceph-users mailing list > >>>>>>> ceph-users at lists.ceph.com > >>>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >>>>>> > >>>>> > >>>> > >>>> > >>>> -- > >>>> Christian Balzer Network/Systems Engineer > >>>> chibi at gol.com Global OnLine Japan/Fusion Communications > >>>> http://www.gol.com/ > >>> > >>> _______________________________________________ > >>> ceph-users mailing list > >>> ceph-users at lists.ceph.com > >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >> > >> _______________________________________________ > >> ceph-users mailing list > >> ceph-users at lists.ceph.com > >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users at lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Fusion Communications http://www.gol.com/
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