Hi, On 06 Sep 2014, at 17:59, Christian Balzer <chibi at gol.com> wrote: > > Hello, > > On Sat, 6 Sep 2014 17:41:02 +0200 Josef Johansson 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. >> > I was thinking about the storage nodes. ^^ > As in, does a particular node or disk seem to be redlined all the time? They?re idle, with little io wait. > >>>> 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. >>> > If you set your cluster to noout, as in "ceph osd set noout" per > http://ceph.com/docs/master/rados/troubleshooting/troubleshooting-osd/ > before shutting down a particular ODS, no data migration will happen. > > Of course you will want to shut it down as little as possible, so that > recovery traffic when it comes back is minimized. > Good, yes will do this. Regards, Josef > Christian > >>>> 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/ >> >> > > > -- > Christian Balzer Network/Systems Engineer > chibi at gol.com Global OnLine Japan/Fusion Communications > http://www.gol.com/
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