Hi, On 06 Sep 2014, at 18:05, Christian Balzer <chibi at gol.com> wrote: > > Hello, > > On Sat, 6 Sep 2014 17:52:59 +0200 Josef Johansson wrote: > >> Hi, >> >> Just realised that it could also be with a popularity bug as well and >> lots a small traffic. And seeing that it?s fast it gets popular until it >> hits the curb. >> > I don't think I ever heard the term "popularity bug" before, care to > elaborate? I did! :D When you start out fine with great numbers, people like it and suddenly it?s not so fast anymore, and when you hit the magic number it starts to be trouble. > >> I?m seeing this in the stats I think. >> >> Linux 3.13-0.bpo.1-amd64 (osd1) 09/06/2014 >> _x86_64_ (24 CPU) > Any particular reason you're not running 3.14? No, just that we don?t have that much time on our hands. >> >> 09/06/2014 05:48:41 PM >> avg-cpu: %user %nice %system %iowait %steal %idle >> 2.21 0.00 1.00 2.86 0.00 93.93 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await r_await w_await svctm %util >> sdm 0.02 1.47 7.05 42.72 0.67 1.07 >> 71.43 0.41 8.17 6.41 8.46 3.44 17.13 sdn >> 0.03 1.42 6.17 37.08 0.57 0.92 70.51 0.08 >> 1.76 6.47 0.98 3.46 14.98 sdg 0.03 1.44 >> 6.27 36.62 0.56 0.94 71.40 0.34 8.00 6.83 >> 8.20 3.45 14.78 sde 0.03 1.23 6.47 39.07 >> 0.59 0.98 70.29 0.43 9.47 6.57 9.95 3.37 15.33 >> sdf 0.02 1.26 6.47 33.77 0.61 0.87 >> 75.30 0.22 5.39 6.00 5.27 3.52 14.17 sdl >> 0.03 1.44 6.44 40.54 0.59 1.08 72.68 0.21 >> 4.49 6.56 4.16 3.40 15.95 sdk 0.03 1.41 >> 5.62 35.92 0.52 0.90 70.10 0.15 3.58 6.17 >> 3.17 3.45 14.32 sdj 0.03 1.26 6.30 34.23 >> 0.57 0.83 70.84 0.31 7.65 6.56 7.85 3.48 14.10 >> >> Seeing that the drives are in pretty good shape but not giving lotsa >> read, I would assume that I need to tweak the cache to swallow more IO. >> > That looks indeed fine, as in, none of these disks looks suspicious to me. > >> When I tweaked it before production I did not see any performance gains >> what so ever, so they are pretty low. And it?s odd because we just saw >> these problems a little while ago. So probably that we hit a limit where >> the disks are getting lot of IO. >> >> I know that there?s some threads about this that I will read again. >> > URL? > Uhm, I think you?re involved in most of them. I'll post what I do and from where. > Christian > >> Thanks for the hints in looking at bad drives. >> >> Regards, >> Josef >> >> On 06 Sep 2014, at 17:41, Josef Johansson <josef at oderland.se> wrote: >> >>> Hi, >>> >>> On 06 Sep 2014, at 17:27, Christian Balzer <chibi at gol.com> wrote: >>> >>>> >>>> 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? >>>> >>> Awful slow io on the VMs, and iowait, it?s about 2MB/s or so. >>> But mostly a lot of iowait. >>> >>>>> 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. >>>> >>> Will read it through. >>>> 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. >>> No spare though, but I have a rough idea what it should be, what?s I?m >>> going at right now. Right, so the cluster should be fine after I stop >>> the OSD right? I though of stopping it a little bit to see if the IO >>> was better afterwards from within the VMs. Not sure how good effect it >>> makes though since it may be waiting for the IO to complete what not. >>>> >>>>> 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. >>>> >>> Great, that?s what I though as well. >>>> 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/ >>> >>> _______________________________________________ >>> 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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