Hi,
Unfortunatly the journal tuning did not do much. That?s odd, because I don?t see much utilisation on OSDs themselves. Now this leads to a network-issue between the OSDs right?
On 06 Sep 2014, at 18:17, Josef Johansson <josef at oderland.se> wrote:
> 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.
It also shows it self as earlier, with slow requests now and then.
Like this
2014-09-06 19:13:28.469533 osd.25 10.168.7.23:6827/11423 362 : [WRN] slow request 31.554785 seconds old, received at 2014-09-06 19:12:56.914688: osd_op(client.12483520.0:12211087 rbd_data.4b8e9b3d1b58ba.0000000000001222 [stat,write 3813376~4096] 3.3bfab9da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:28.469536 osd.25 10.168.7.23:6827/11423 363 : [WRN] slow request 31.554736 seconds old, received at 2014-09-06 19:12:56.914737: osd_op(client.12483520.0:12211088 rbd_data.4b8e9b3d1b58ba.0000000000001222 [stat,write 3842048~8192] 3.3bfab9da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:28.469539 osd.25 10.168.7.23:6827/11423 364 : [WRN] slow request 30.691760 seconds old, received at 2014-09-06 19:12:57.777713: osd_op(client.12646408.0:36726433 rbd_data.81ab322eb141f2.000000000000ec38 [stat,write 749568~4096] 3.7ae1c1da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:31.469946 osd.25 10.168.7.23:6827/11423 365 : [WRN] 23 slow requests, 2 included below; oldest blocked for > 42.196747 secs
2014-09-06 19:13:31.469951 osd.25 10.168.7.23:6827/11423 366 : [WRN] slow request 30.344653 seconds old, received at 2014-09-06 19:13:01.125248: osd_op(client.18869229.0:100325 rbd_data.41d2eb2eb141f2.0000000000002732 [stat,write 2174976~4096] 3.55d437e e15861) v4 currently waiting for subops from [13,6]
2014-09-06 19:13:31.469954 osd.25 10.168.7.23:6827/11423 367 : [WRN] slow request 30.344579 seconds old, received at 2014-09-06 19:13:01.125322: osd_op(client.18869229.0:100326 rbd_data.41d2eb2eb141f2.0000000000002732 [stat,write 2920448~4096] 3.55d437e e15861) v4 currently waiting for subops from [13,6]
2014-09-06 19:13:32.470156 osd.25 10.168.7.23:6827/11423 368 : [WRN] 24 slow requests, 1 included below; oldest blocked for > 43.196971 secs
2014-09-06 19:13:32.470163 osd.25 10.168.7.23:6827/11423 369 : [WRN] slow request 30.627252 seconds old, received at 2014-09-06 19:13:01.842873: osd_op(client.10785413.0:136148901 rbd_data.96803f2eb141f2.00000000000033d7 [stat,write 4063232~4096] 3.cf740399 e15861) v4 currently waiting for subops from [1,13]
2014-09-06 19:13:37.470895 osd.25 10.168.7.23:6827/11423 370 : [WRN] 27 slow requests, 3 included below; oldest blocked for > 48.197700 secs
2014-09-06 19:13:37.470902 osd.25 10.168.7.23:6827/11423 371 : [WRN] slow request 30.769509 seconds old, received at 2014-09-06 19:13:06.701345: osd_op(client.18777372.0:1605468 rbd_data.2f1e4e2eb141f2.0000000000003541 [stat,write 1118208~4096] 3.db1ca37e e15861) v4 currently waiting for subops from [13,6]
2014-09-06 19:13:37.470907 osd.25 10.168.7.23:6827/11423 372 : [WRN] slow request 30.769458 seconds old, received at 2014-09-06 19:13:06.701396: osd_op(client.18777372.0:1605469 rbd_data.2f1e4e2eb141f2.0000000000003541 [stat,write 1130496~4096] 3.db1ca37e e15861) v4 currently waiting for subops from [13,6]
2014-09-06 19:13:37.470910 osd.25 10.168.7.23:6827/11423 373 : [WRN] slow request 30.266843 seconds old, received at 2014-09-06 19:13:07.204011: osd_op(client.18795696.0:847270 rbd_data.30532e2eb141f2.00000000000036bd [stat,write 3772416~4096] 3.76f1df7e e15861) v4 currently waiting for subops from [13,6]
2014-09-06 19:13:38.471152 osd.25 10.168.7.23:6827/11423 374 : [WRN] 30 slow requests, 3 included below; oldest blocked for > 49.197952 secs
2014-09-06 19:13:38.471158 osd.25 10.168.7.23:6827/11423 375 : [WRN] slow request 30.706236 seconds old, received at 2014-09-06 19:13:07.764870: osd_op(client.12483523.0:36628673 rbd_data.4defd32eb141f2.0000000000015200 [stat,write 2121728~4096] 3.cd82ed8a e15861) v4 currently waiting for subops from [0,13]
2014-09-06 19:13:38.471162 osd.25 10.168.7.23:6827/11423 376 : [WRN] slow request 30.695616 seconds old, received at 2014-09-06 19:13:07.775490: osd_op(client.10785416.0:72721328 rbd_data.96808f2eb141f2.0000000000002a37 [stat,write 1507328~4096] 3.323e11da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:38.471165 osd.25 10.168.7.23:6827/11423 377 : [WRN] slow request 30.623025 seconds old, received at 2014-09-06 19:13:07.848081: osd_op(client.18809749.0:315523 rbd_data.26fad12eb141f2.000000000000473a [stat,write 2248704~4096] 3.26e839da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:39.471304 osd.25 10.168.7.23:6827/11423 378 : [WRN] 31 slow requests, 1 included below; oldest blocked for > 50.198117 secs
2014-09-06 19:13:39.471310 osd.25 10.168.7.23:6827/11423 379 : [WRN] slow request 30.749529 seconds old, received at 2014-09-06 19:13:08.721742: osd_op(client.18780171.0:649232 rbd_data.55019a2eb141f2.000000000000097c [stat,write 188416~4096] 3.c31859da e15861) v4 currently waiting for subops from [13,2]
2014-09-06 19:13:40.471439 osd.25 10.168.7.23:6827/11423 380 : [WRN] 32 slow requests, 1 included below; oldest blocked for > 51.198249 secs
2014-09-06 19:13:40.471445 osd.25 10.168.7.23:6827/11423 381 : [WRN] slow request 30.842014 seconds old, received at 2014-09-06 19:13:09.629389: osd_op(client.9281213.0:39090073 rbd_data.4e1ed72eb141f2.0000000000003949 [stat,write 397312~4096] 3.94374f99 e15861) v4 currently waiting for subops from [1,13]
2014-09-06 19:14:16.976270 osd.24 10.168.7.23:6819/10217 721 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.706905 secs
2014-09-06 19:14:16.976276 osd.24 10.168.7.23:6819/10217 722 : [WRN] slow request 30.706905 seconds old, received at 2014-09-06 19:13:46.269338: osd_op(client.18933091.0:413037 rbd_data.967e522eb141f2.000000000000f838 [stat,write 2584576~163840] 3.54f712a6 e15861) v4 currently waiting for subops from [15,9]
2014-09-06 19:14:25.977474 osd.24 10.168.7.23:6819/10217 723 : [WRN] 7 slow requests, 6 included below; oldest blocked for > 39.708092 secs
2014-09-06 19:14:25.977480 osd.24 10.168.7.23:6819/10217 724 : [WRN] slow request 30.833974 seconds old, received at 2014-09-06 19:13:55.143456: osd_op(client.18371393.0:1892255 rbd_data.117d9df2ae8944a.0000000000000141 [write 262144~8192] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:25.977483 osd.24 10.168.7.23:6819/10217 725 : [WRN] slow request 30.833841 seconds old, received at 2014-09-06 19:13:55.143589: osd_op(client.18371393.0:1892256 rbd_data.117d9df2ae8944a.0000000000000141 [write 274432~4096] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:25.977486 osd.24 10.168.7.23:6819/10217 726 : [WRN] slow request 30.833735 seconds old, received at 2014-09-06 19:13:55.143695: osd_op(client.18371393.0:1892257 rbd_data.117d9df2ae8944a.0000000000000141 [write 282624~4096] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:25.977490 osd.24 10.168.7.23:6819/10217 727 : [WRN] slow request 30.833664 seconds old, received at 2014-09-06 19:13:55.143766: osd_op(client.18371393.0:1892258 rbd_data.117d9df2ae8944a.0000000000000141 [write 299008~8192] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:25.977493 osd.24 10.168.7.23:6819/10217 728 : [WRN] slow request 30.833570 seconds old, received at 2014-09-06 19:13:55.143860: osd_op(client.18371393.0:1892259 rbd_data.117d9df2ae8944a.0000000000000141 [write 319488~4096] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:18.955571 osd.19 10.168.7.23:6806/7701 384 : [WRN] 2 slow requests, 2 included below; oldest blocked for > 30.915626 secs
2014-09-06 19:14:18.955578 osd.19 10.168.7.23:6806/7701 385 : [WRN] slow request 30.915626 seconds old, received at 2014-09-06 19:13:48.039909: osd_op(client.18781018.0:1953063 rbd_data.4d02282eb141f2.0000000000000ce9 [stat,write 2121728~2072576] 3.b68613f e15861) v4 currently waiting for subops from [37,20]
2014-09-06 19:14:18.955581 osd.19 10.168.7.23:6806/7701 386 : [WRN] slow request 30.045546 seconds old, received at 2014-09-06 19:13:48.909989: osd_op(client.18516181.0:8356940 rbd_data.4700682eb141f2.000000000000003c [stat,write 1851392~16384] 3.d5b87cff e15861) v4 currently waiting for subops from [8,37]
2014-09-06 19:14:26.977710 osd.24 10.168.7.23:6819/10217 729 : [WRN] 7 slow requests, 1 included below; oldest blocked for > 40.708340 secs
2014-09-06 19:14:26.977715 osd.24 10.168.7.23:6819/10217 730 : [WRN] slow request 31.081591 seconds old, received at 2014-09-06 19:13:55.896087: osd_op(client.12483526.0:35096707 rbd_data.4b8ea12eb141f2.000000000000415a [stat,write 4169728~4096] 3.e8e9faa6 e15861) v4 currently waiting for subops from [15,9]
2014-09-06 19:14:32.978731 osd.24 10.168.7.23:6819/10217 731 : [WRN] 8 slow requests, 1 included below; oldest blocked for > 46.709336 secs
2014-09-06 19:14:32.978738 osd.24 10.168.7.23:6819/10217 732 : [WRN] slow request 30.115926 seconds old, received at 2014-09-06 19:14:02.862748: osd_op(client.18780177.0:320536 rbd_data.5501a62eb141f2.0000000000000057 [stat,write 1327104~4096] 3.bbb832a6 e15861) v4 currently waiting for subops from [15,9]
2014-09-06 19:14:35.979239 osd.24 10.168.7.23:6819/10217 733 : [WRN] 14 slow requests, 6 included below; oldest blocked for > 49.709837 secs
2014-09-06 19:14:35.979244 osd.24 10.168.7.23:6819/10217 734 : [WRN] slow request 30.825477 seconds old, received at 2014-09-06 19:14:05.153698: osd_op(client.18371393.0:1892404 rbd_data.117d9df2ae8944a.0000000000000142 [write 3932160~4096] 14.4822de9b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:35.979248 osd.24 10.168.7.23:6819/10217 735 : [WRN] slow request 30.825370 seconds old, received at 2014-09-06 19:14:05.153805: osd_op(client.18371393.0:1892405 rbd_data.117d9df2ae8944a.0000000000000142 [write 3940352~8192] 14.4822de9b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:35.979251 osd.24 10.168.7.23:6819/10217 736 : [WRN] slow request 30.825236 seconds old, received at 2014-09-06 19:14:05.153939: osd_op(client.18371393.0:1892406 rbd_data.117d9df2ae8944a.0000000000000142 [write 3960832~4096] 14.4822de9b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:35.979253 osd.24 10.168.7.23:6819/10217 737 : [WRN] slow request 30.823889 seconds old, received at 2014-09-06 19:14:05.155286: osd_op(client.18371393.0:1892420 rbd_data.117d9df2ae8944a.0000000000000141 [write 0~4096] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:35.979258 osd.24 10.168.7.23:6819/10217 738 : [WRN] slow request 30.823785 seconds old, received at 2014-09-06 19:14:05.155390: osd_op(client.18371393.0:1892421 rbd_data.117d9df2ae8944a.0000000000000141 [write 8192~8192] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:14:36.979441 osd.24 10.168.7.23:6819/10217 739 : [WRN] 14 slow requests, 1 included below; oldest blocked for > 50.710081 secs
2014-09-06 19:14:36.979446 osd.24 10.168.7.23:6819/10217 740 : [WRN] slow request 31.823918 seconds old, received at 2014-09-06 19:14:05.155501: osd_op(client.18371393.0:1892422 rbd_data.117d9df2ae8944a.0000000000000141 [write 28672~4096] 14.7569a69b e15861) v4 currently waiting for subops from [15]
2014-09-06 19:15:24.770188 osd.28 10.168.7.23:6843/14566 774 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.206086 secs
2014-09-06 19:15:24.770194 osd.28 10.168.7.23:6843/14566 775 : [WRN] slow request 30.206086 seconds old, received at 2014-09-06 19:14:54.564079: osd_op(client.9266625.0:147034227 rbd_data.42d6792eb141f2.000000000000f83f [stat,write 0~4194304] 3.4ff6bd9b e15861) v4 currently waiting for subops from [38,13]
2014-09-06 19:15:26.770435 osd.28 10.168.7.23:6843/14566 776 : [WRN] 2 slow requests, 1 included below; oldest blocked for > 32.206328 secs
2014-09-06 19:15:26.770440 osd.28 10.168.7.23:6843/14566 777 : [WRN] slow request 30.663403 seconds old, received at 2014-09-06 19:14:56.107004: osd_op(client.18780574.0:1021249 rbd_data.967d562eb141f2.00000000000042c0 [stat,write 3117056~4096] 3.186b7c1 e15861) v4 currently waiting for subops from [44,38]
2014-09-06 19:24:14.883152 osd.23 10.168.7.23:6814/9627 386 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.861143 secs
2014-09-06 19:24:14.883156 osd.23 10.168.7.23:6814/9627 387 : [WRN] slow request 30.861143 seconds old, received at 2014-09-06 19:23:44.021986: osd_op(client.18781018.0:2004280 rbd_data.4d02282eb141f2.0000000000000ba8 [stat,write 2506752~380928] 3.7a4382b e15861) v4 currently waiting for subops from [33,1]
2014-09-06 19:25:22.837826 osd.28 10.168.7.23:6843/14566 779 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.127923 secs
2014-09-06 19:25:22.837837 osd.28 10.168.7.23:6843/14566 780 : [WRN] slow request 30.127923 seconds old, received at 2014-09-06 19:24:52.709881: osd_op(client.18781018.0:2010421 rbd_data.4d02282eb141f2.0000000000000c9f [stat,write 1282048~2912256] 3.61cd6bc1 e15861) v4 currently waiting for subops from [44,38]
2014-09-06 19:26:05.035047 osd.19 10.168.7.23:6806/7701 388 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.488605 secs
2014-09-06 19:26:05.035052 osd.19 10.168.7.23:6806/7701 389 : [WRN] slow request 30.488605 seconds old, received at 2014-09-06 19:25:34.546419: osd_op(client.18781018.0:2027547 rbd_data.4d02282eb141f2.0000000000000ce9 [stat,write 2318336~1875968] 3.b68613f e15861) v4 currently waiting for subops from [37,20]
2014-09-06 19:27:55.381526 osd.22 10.168.7.23:6810/8748 1415 : [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.675678 secs
2014-09-06 19:27:55.381531 osd.22 10.168.7.23:6810/8748 1416 : [WRN] slow request 30.675678 seconds old, received at 2014-09-06 19:27:24.705808: osd_op(client.18516184.0:12873003 rbd_data.47006e2eb141f2.000000000000f839 [stat,write 1142784~1310720] 3.8520ce00 e15861) v4 currently waiting for subops from [49,46]
2014-09-06 19:27:57.381832 osd.22 10.168.7.23:6810/8748 1417 : [WRN] 2 slow requests, 1 included below; oldest blocked for > 32.676003 secs
2014-09-06 19:27:57.381837 osd.22 10.168.7.23:6810/8748 1418 : [WRN] slow request 30.559596 seconds old, received at 2014-09-06 19:27:26.822215: osd_op(client.12929758.0:55398694 rbd_data.b162f22eb141f2.0000000000005070 [stat,write 3178496~16384] 3.320d72fc e15861) v4 currently waiting for subops from [46,34]
2014-09-06 19:28:00.382119 osd.22 10.168.7.23:6810/8748 1419 : [WRN] 3 slow requests, 1 included below; oldest blocked for > 35.676289 secs
2014-09-06 19:28:00.382124 osd.22 10.168.7.23:6810/8748 1420 : [WRN] slow request 30.511158 seconds old, received at 2014-09-06 19:27:29.870939: osd_op(client.9757754.0:74509765 rbd_data.8a8ed52eb141f2.0000000000003bd3 [stat,write 3407872~4096] 3.5feb5e00 e15861) v4 currently waiting for subops from [49,46]
Did the obvious report as well
sudo grep 'slow request' /var/log/ceph/ceph.log | awk '{print $3}' | sort | uniq -c | sort -n | tail
1143 osd.4
1268 osd.19
2007 osd.25
2183 osd.26
2229 osd.27
2783 osd.24
4037 osd.17
4137 osd.23
4174 osd.22
4986 osd.28
It doesn?t seem that I actually gain much by stopping the most referred OSD.
I read somewhere that you actually could have a object-file that messed everything up, so when the OSD was running, you had very low performance. No idea how to find that though.
Regards,
Josef
>>
>>>>> 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/
>
> _______________________________________________
> ceph-users mailing list
> ceph-users at lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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