> -----Original Message----- > From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of > Jacek Jarosiewicz > Sent: 19 August 2015 09:29 > To: ceph-users@xxxxxxxx > Subject: requests are blocked - problem > > Hi, > > Our setup is this: > > 4 x OSD nodes: > E5-1630 CPU > 32 GB RAM > Mellanox MT27520 56Gbps network cards > SATA controller LSI Logic SAS3008 > Storage nodes are connected to SuperMicro chassis: 847E1C-R1K28JBOD Each > node has 2-3 spinning OSDs (6TB drives) and 2 ssd OSDs (240GB drives) > 3 monitors running on OSD nodes > ceph hammer 0.94.2 > Ubuntu 14.04 > cache tier with ecpool (3+1) > > We've ran some tests on the cluster and results were promising - speeds, > iops etc as expected, but now we tried to use more than one client for > testing and ran into some problems: When you ran this test did you fill the RBD enough that it would have been flushing the dirty contents down to the base tier? > > We've created a couple rbd images and mapped them on clients (kernel > rbd) running two rsync processes and one dd on a large number of files (~ > 250 GB of maildirs rsync'ed from one rbd image to the other and a dd process > writing one big 2TB file on another rbd image) > > And the speeds now are less than OK, plus we have a lot requests blocked > warnings. We've left the processes to run over night but this morning I came > and none of the processes finished - they are able to write data, but at a > very, very slow rate. Once you have written to a block once, if the underlying object exists on the EC pool, it will have to be promoted to the Cache pool before it can be written to. This can have a severe impact on performance, especially if you are hitting lots of different blocks and the tiering agent can't keep up with the promotion requests. > > Please help me diagnose this problem, everything seems to work, just very, > very slow... when we ran the tests with fio (librbd engine) everything seemd > fine.. I know that kernel implementation is slower, but is this normal? I can't > understand why are so many requests blocked. I would suggest running the fio tests again, just to make sure that there isn't a problem with your newer config, but I suspect you will see equally bad performance with the fio tests now that the cache tier has begun to be more populated. > > Some diagnostic data: > > root@cf01:/var/log/ceph# ceph -s > cluster 3469081f-9852-4b6e-b7ed-900e77c48bb5 > health HEALTH_WARN > 31 requests are blocked > 32 sec > monmap e1: 3 mons at > {cf01=10.4.10.211:6789/0,cf02=10.4.10.212:6789/0,cf03=10.4.10.213:6789/0} > election epoch 202, quorum 0,1,2 cf01,cf02,cf03 > osdmap e1319: 18 osds: 18 up, 18 in > pgmap v933010: 2112 pgs, 19 pools, 10552 GB data, 2664 kobjects > 14379 GB used, 42812 GB / 57192 GB avail > 2111 active+clean > 1 active+clean+scrubbing > client io 0 B/s rd, 12896 kB/s wr, 35 op/s > > > root@cf01:/var/log/ceph# ceph health detail > HEALTH_WARN 23 requests are blocked > 32 sec; 6 osds have slow requests > 1 ops are blocked > 131.072 sec > 22 ops are blocked > 65.536 sec > 1 ops are blocked > 65.536 sec on osd.2 > 1 ops are blocked > 65.536 sec on osd.3 > 1 ops are blocked > 65.536 sec on osd.4 > 1 ops are blocked > 131.072 sec on osd.7 > 18 ops are blocked > 65.536 sec on osd.10 > 1 ops are blocked > 65.536 sec on osd.12 > 6 osds have slow requests > > > root@cf01:/var/log/ceph# grep WRN ceph.log | tail -50 > 2015-08-19 10:23:34.505669 osd.14 10.4.10.213:6810/21207 17942 : cluster > [WRN] 2 slow requests, 2 included below; oldest blocked for > 30.575870 secs > 2015-08-19 10:23:34.505796 osd.14 10.4.10.213:6810/21207 17943 : cluster > [WRN] slow request 30.575870 seconds old, received at 2015-08-19 > 10:23:03.929722: osd_op(client.9203.1:22822591 > rbd_data.37e02ae8944a.00000000000180ca [set-alloc-hint object_size > 4194304 write_size 4194304,write 0~462848] 5.1c2aff5f ondisk+write > e1319) currently waiting for blocked object > 2015-08-19 10:23:34.505803 osd.14 10.4.10.213:6810/21207 17944 : cluster > [WRN] slow request 30.560009 seconds old, received at 2015-08-19 > 10:23:03.945583: osd_op(client.9203.1:22822592 > rbd_data.37e02ae8944a.00000000000180ca [set-alloc-hint object_size > 4194304 write_size 4194304,write 462848~524288] 5.1c2aff5f ondisk+write > e1319) currently waiting for blocked object > 2015-08-19 10:23:35.489927 osd.1 10.4.10.211:6812/9198 7921 : cluster > [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.112783 secs > 2015-08-19 10:23:35.490326 osd.1 10.4.10.211:6812/9198 7922 : cluster > [WRN] slow request 30.112783 seconds old, received at 2015-08-19 > 10:23:05.376339: osd_op(osd.14.1299:731492 > rbd_data.37e02ae8944a.0000000000017a90 [copy-from ver 61293] 4.5aa9fb69 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:36.799861 osd.6 10.4.10.213:6806/22569 22663 : cluster > [WRN] 2 slow requests, 1 included below; oldest blocked for > 60.414800 secs > 2015-08-19 10:23:36.800018 osd.6 10.4.10.213:6806/22569 22664 : cluster > [WRN] slow request 60.414800 seconds old, received at 2015-08-19 > 10:22:36.384453: osd_op(osd.11.1299:705465 > rbd_data.37e02ae8944a.0000000000017cd2 [copy-from ver 61156] 4.c961fc05 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:34.652970 osd.7 10.4.10.213:6808/22888 21331 : cluster > [WRN] 16 slow requests, 1 included below; oldest blocked for > 58.978274 > secs > 2015-08-19 10:23:34.653013 osd.7 10.4.10.213:6808/22888 21332 : cluster > [WRN] slow request 30.703792 seconds old, received at 2015-08-19 > 10:23:03.948535: osd_op(osd.14.1299:731491 > rbd_data.37e02ae8944a.00000000000180ca [copy-get max 8388608] > 4.1c2aff5f > ack+read+ignore_cache+ignore_overlay+map_snap_clone+known_if_redire > cted > e1319) currently started > 2015-08-19 10:23:35.653883 osd.7 10.4.10.213:6808/22888 21333 : cluster > [WRN] 17 slow requests, 3 included below; oldest blocked for > 59.979456 > secs > 2015-08-19 10:23:35.654260 osd.7 10.4.10.213:6808/22888 21334 : cluster > [WRN] slow request 30.737485 seconds old, received at 2015-08-19 > 10:23:04.916024: MOSDECSubOpWrite(4.1aes1 1319 ECSubWrite(tid=508685, > reqid=osd.15.1301:577673, at_version=1319'5556, trim_to=1318'2500, > trim_rollback_to=1319'5554)) currently started > 2015-08-19 10:23:35.654268 osd.7 10.4.10.213:6808/22888 21335 : cluster > [WRN] slow request 30.533515 seconds old, received at 2015-08-19 > 10:23:05.119993: osd_op(osd.11.1299:705493 > rbd_data.37e02ae8944a.0000000000017dcc [copy-from ver 60974] 4.4c845496 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:35.654272 osd.7 10.4.10.213:6808/22888 21336 : cluster > [WRN] slow request 30.255396 seconds old, received at 2015-08-19 > 10:23:05.398113: MOSDECSubOpWrite(4.169s1 1319 ECSubWrite(tid=614933, > reqid=osd.14.1299:731492, at_version=1319'5541, trim_to=1318'2500, > trim_rollback_to=1319'5538)) currently started > 2015-08-19 10:23:36.654759 osd.7 10.4.10.213:6808/22888 21337 : cluster > [WRN] 16 slow requests, 2 included below; oldest blocked for > 60.980631 > secs > 2015-08-19 10:23:36.654766 osd.7 10.4.10.213:6808/22888 21338 : cluster > [WRN] slow request 60.980631 seconds old, received at 2015-08-19 > 10:22:35.674053: MOSDECSubOpWrite(4.1a9s1 1319 ECSubWrite(tid=604142, > reqid=osd.16.1272:599035, at_version=1319'5715, trim_to=1318'2700, > trim_rollback_to=1319'5711)) currently started > 2015-08-19 10:23:36.654772 osd.7 10.4.10.213:6808/22888 21339 : cluster > [WRN] slow request 60.271394 seconds old, received at 2015-08-19 > 10:22:36.383289: MOSDECSubOpWrite(4.1a9s1 1319 ECSubWrite(tid=604143, > reqid=osd.16.1272:599036, at_version=1319'5716, trim_to=1318'2700, > trim_rollback_to=1319'5711)) currently started > 2015-08-19 10:23:37.654933 osd.7 10.4.10.213:6808/22888 21340 : cluster > [WRN] 15 slow requests, 1 included below; oldest blocked for > 61.980829 > secs > 2015-08-19 10:23:37.655100 osd.7 10.4.10.213:6808/22888 21341 : cluster > [WRN] slow request 60.225464 seconds old, received at 2015-08-19 > 10:22:37.429417: MOSDECSubOpWrite(4.5s3 1319 ECSubWrite(tid=563247, > reqid=osd.11.1299:705465, at_version=1319'5545, trim_to=1318'2500, > trim_rollback_to=1319'5539)) currently started > 2015-08-19 10:23:42.656604 osd.7 10.4.10.213:6808/22888 21342 : cluster > [WRN] 10 slow requests, 1 included below; oldest blocked for > 66.272631 > secs > 2015-08-19 10:23:42.657055 osd.7 10.4.10.213:6808/22888 21343 : cluster > [WRN] slow request 30.549952 seconds old, received at 2015-08-19 > 10:23:12.105968: osd_op(osd.14.1299:731499 > rbd_data.37e02ae8944a.00000000000177ee [copy-from ver 66450] > 4.a71f73bb > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:35.164040 osd.2 10.4.10.211:6808/10427 7307 : cluster > [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.272625 secs > 2015-08-19 10:23:35.164208 osd.2 10.4.10.211:6808/10427 7308 : cluster > [WRN] slow request 30.272625 seconds old, received at 2015-08-19 > 10:23:04.890780: osd_op(osd.15.1301:577673 > rbd_data.37e02ae8944a.0000000000017b2c [copy-from ver 61313] 4.217af5ae > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:43.567637 osd.3 10.4.10.212:6804/31427 7180 : cluster > [WRN] 1 slow requests, 1 included below; oldest blocked for > 60.708292 secs > 2015-08-19 10:23:43.567645 osd.3 10.4.10.212:6804/31427 7181 : cluster > [WRN] slow request 60.708292 seconds old, received at 2015-08-19 > 10:22:42.859163: osd_op(osd.14.1299:731455 > rbd_data.37e02ae8944a.0000000000017f5c [copy-from ver 61192] 4.a6121781 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:36.762303 osd.4 10.4.10.212:6806/31912 7895 : cluster > [WRN] 4 slow requests, 1 included below; oldest blocked for > 61.142907 secs > 2015-08-19 10:23:36.762685 osd.4 10.4.10.212:6806/31912 7896 : cluster > [WRN] slow request 60.400444 seconds old, received at 2015-08-19 > 10:22:36.360861: osd_op(osd.16.1272:599036 > rbd_data.37e02ae8944a.0000000000017bf5 [copy-from ver 63134] > 4.95eb47a9 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:43.765242 osd.4 10.4.10.212:6806/31912 7897 : cluster > [WRN] 4 slow requests, 1 included below; oldest blocked for > 67.403887 secs > 2015-08-19 10:23:43.765623 osd.4 10.4.10.212:6806/31912 7898 : cluster > [WRN] slow request 30.849907 seconds old, received at 2015-08-19 > 10:23:12.914840: osd_op(osd.16.1272:599065 > rbd_data.37e02ae8944a.00000000000180ae [copy-get max 8388608] > 4.faca2da9 > ack+read+ignore_cache+ignore_overlay+map_snap_clone+known_if_redire > cted > e1319) currently started > 2015-08-19 10:23:45.493885 osd.1 10.4.10.211:6812/9198 7923 : cluster > [WRN] 1 slow requests, 1 included below; oldest blocked for > 30.014812 secs > 2015-08-19 10:23:45.494246 osd.1 10.4.10.211:6812/9198 7924 : cluster > [WRN] slow request 30.014812 seconds old, received at 2015-08-19 > 10:23:15.478121: osd_op(osd.16.1272:599072 > rbd_data.37e02ae8944a.0000000000017b1c [copy-from ver 65567] > 4.bead06e1 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:46.803793 osd.6 10.4.10.213:6806/22569 22665 : cluster > [WRN] 1 slow requests, 1 included below; oldest blocked for > 60.664609 secs > 2015-08-19 10:23:46.803971 osd.6 10.4.10.213:6806/22569 22666 : cluster > [WRN] slow request 60.664609 seconds old, received at 2015-08-19 > 10:22:46.138538: osd_op(osd.11.1299:705468 > rbd_data.37e02ae8944a.0000000000017abe [copy-from ver 61142] > 4.c0253e05 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:43.657718 osd.7 10.4.10.213:6808/22888 21344 : cluster > [WRN] 12 slow requests, 3 included below; oldest blocked for > 67.273998 > secs > 2015-08-19 10:23:43.657725 osd.7 10.4.10.213:6808/22888 21345 : cluster > [WRN] slow request 30.728099 seconds old, received at 2015-08-19 > 10:23:12.929188: osd_op(osd.11.1299:705499 > rbd_data.37e02ae8944a.0000000000017d85 [copy-from ver 60964] 4.ba4f1896 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:43.657887 osd.7 10.4.10.213:6808/22888 21346 : cluster > [WRN] slow request 30.675844 seconds old, received at 2015-08-19 > 10:23:12.981443: MOSDECSubOpRead(4.1a9s1 1319 ECSubRead(tid=604164, > to_read={faca2da9/rbd_data.37e02ae8944a.00000000000180ae/head//4=0,2 > 797408,0}, > attrs_to_read=)) currently no flag points reached > 2015-08-19 10:23:43.657894 osd.7 10.4.10.213:6808/22888 21347 : cluster > [WRN] slow request 60.771125 seconds old, received at 2015-08-19 > 10:22:42.886162: MOSDECSubOpWrite(4.181s2 1319 ECSubWrite(tid=566649, > reqid=osd.14.1299:731455, at_version=1319'5518, trim_to=1318'2500, > trim_rollback_to=1319'5514)) currently started > 2015-08-19 10:23:44.658111 osd.7 10.4.10.213:6808/22888 21348 : cluster > [WRN] 13 slow requests, 2 included below; oldest blocked for > 68.274757 > secs > 2015-08-19 10:23:44.658118 osd.7 10.4.10.213:6808/22888 21349 : cluster > [WRN] slow request 30.969646 seconds old, received at 2015-08-19 > 10:23:13.688399: osd_op(osd.10.1297:558590 > rbd_data.37e02ae8944a.0000000000017b0e [copy-from ver 63188] > 4.646dd0af > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently started > 2015-08-19 10:23:44.658122 osd.7 10.4.10.213:6808/22888 21350 : cluster > [WRN] slow request 30.969351 seconds old, received at 2015-08-19 > 10:23:13.688695: osd_op(osd.10.1297:558591 > rbd_data.37e02ae8944a.0000000000017973 [copy-from ver 63177] 4.fd21a2af > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently started > 2015-08-19 10:23:45.658546 osd.7 10.4.10.213:6808/22888 21351 : cluster > [WRN] 13 slow requests, 1 included below; oldest blocked for > 69.275060 > secs > 2015-08-19 10:23:45.658554 osd.7 10.4.10.213:6808/22888 21352 : cluster > [WRN] slow request 30.156082 seconds old, received at 2015-08-19 > 10:23:15.502267: MOSDECSubOpWrite(4.e1s2 1319 ECSubWrite(tid=614936, > reqid=osd.16.1272:599072, at_version=1319'5510, trim_to=1318'2500, > trim_rollback_to=1319'5508)) currently started > 2015-08-19 10:23:46.658900 osd.7 10.4.10.213:6808/22888 21353 : cluster > [WRN] 13 slow requests, 2 included below; oldest blocked for > 70.275453 > secs > 2015-08-19 10:23:46.658908 osd.7 10.4.10.213:6808/22888 21354 : cluster > [WRN] slow request 30.776570 seconds old, received at 2015-08-19 > 10:23:15.882172: osd_op(osd.11.1299:705504 > rbd_data.37e02ae8944a.0000000000018028 [copy-from ver 60995] 4.cf21fa96 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently started > 2015-08-19 10:23:46.658913 osd.7 10.4.10.213:6808/22888 21355 : cluster > [WRN] slow request 60.273271 seconds old, received at 2015-08-19 > 10:22:46.385472: MOSDECSubOpWrite(4.5s3 1319 ECSubWrite(tid=563263, > reqid=osd.11.1299:705468, at_version=1319'5546, trim_to=1318'2500, > trim_rollback_to=1319'5539)) currently started > 2015-08-19 10:23:49.659552 osd.7 10.4.10.213:6808/22888 21356 : cluster > [WRN] 12 slow requests, 1 included below; oldest blocked for > 73.276082 > secs > 2015-08-19 10:23:49.659559 osd.7 10.4.10.213:6808/22888 21357 : cluster > [WRN] slow request 30.075904 seconds old, received at 2015-08-19 > 10:23:19.583468: osd_op(osd.12.1298:558271 > rbd_data.37e02ae8944a.0000000000017f03 [copy-from ver 62273] 4.aafb718f > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:51.660604 osd.7 10.4.10.213:6808/22888 21358 : cluster > [WRN] 11 slow requests, 1 included below; oldest blocked for > 65.274645 > secs > 2015-08-19 10:23:51.661052 osd.7 10.4.10.213:6808/22888 21359 : cluster > [WRN] slow request 30.271682 seconds old, received at 2015-08-19 > 10:23:21.388434: osd_op(osd.12.1298:558278 > rbd_data.37e02ae8944a.0000000000017b74 [copy-from ver 62260] > 4.60d7e38f > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > 2015-08-19 10:23:53.768995 osd.4 10.4.10.212:6806/31912 7899 : cluster > [WRN] 2 slow requests, 1 included below; oldest blocked for > 60.660749 secs > 2015-08-19 10:23:53.769507 osd.4 10.4.10.212:6806/31912 7900 : cluster > [WRN] slow request 60.660749 seconds old, received at 2015-08-19 > 10:22:53.107765: osd_op(osd.16.1272:599047 > rbd_data.37e02ae8944a.000000000001803d [copy-from ver 63185] 4.a327fba9 > ondisk+write+ignore_overlay+enforce_snapc+known_if_redirected e1319) > currently commit_sent > > root@cf01:/var/log/ceph# ceph osd tree > ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY > -15 10.00000 root sata > -7 3.00000 disktype cf01sata > 0 1.00000 osd.0 up 1.00000 1.00000 > 1 1.00000 osd.1 up 1.00000 1.00000 > 2 1.00000 osd.2 up 1.00000 1.00000 > -9 2.00000 disktype cf02sata > 3 1.00000 osd.3 up 1.00000 1.00000 > 4 1.00000 osd.4 up 1.00000 1.00000 > -11 3.00000 disktype cf03sata > 5 1.00000 osd.5 up 1.00000 1.00000 > 6 1.00000 osd.6 up 1.00000 1.00000 > 7 1.00000 osd.7 up 1.00000 1.00000 > -13 2.00000 disktype cf04sata > 8 1.00000 osd.8 up 1.00000 1.00000 > 9 1.00000 osd.9 up 1.00000 1.00000 > -14 8.00000 root ssd > -6 2.00000 disktype cf01ssd > 10 1.00000 osd.10 up 1.00000 1.00000 > 11 1.00000 osd.11 up 1.00000 1.00000 > -8 2.00000 disktype cf02ssd > 12 1.00000 osd.12 up 1.00000 1.00000 > 13 1.00000 osd.13 up 1.00000 1.00000 > -10 2.00000 disktype cf03ssd > 14 1.00000 osd.14 up 1.00000 1.00000 > 15 1.00000 osd.15 up 1.00000 1.00000 > -12 2.00000 disktype cf04ssd > 17 1.00000 osd.17 up 1.00000 1.00000 > 16 1.00000 osd.16 up 1.00000 1.00000 > -1 18.00000 root default > -2 5.00000 host cf01 > -6 2.00000 disktype cf01ssd > 10 1.00000 osd.10 up 1.00000 1.00000 > 11 1.00000 osd.11 up 1.00000 1.00000 > -7 3.00000 disktype cf01sata > 0 1.00000 osd.0 up 1.00000 1.00000 > 1 1.00000 osd.1 up 1.00000 1.00000 > 2 1.00000 osd.2 up 1.00000 1.00000 > -3 4.00000 host cf02 > -8 2.00000 disktype cf02ssd > 12 1.00000 osd.12 up 1.00000 1.00000 > 13 1.00000 osd.13 up 1.00000 1.00000 > -9 2.00000 disktype cf02sata > 3 1.00000 osd.3 up 1.00000 1.00000 > 4 1.00000 osd.4 up 1.00000 1.00000 > -4 5.00000 host cf03 > -10 2.00000 disktype cf03ssd > 14 1.00000 osd.14 up 1.00000 1.00000 > 15 1.00000 osd.15 up 1.00000 1.00000 > -11 3.00000 disktype cf03sata > 5 1.00000 osd.5 up 1.00000 1.00000 > 6 1.00000 osd.6 up 1.00000 1.00000 > 7 1.00000 osd.7 up 1.00000 1.00000 > -5 4.00000 host cf04 > -12 2.00000 disktype cf04ssd > 17 1.00000 osd.17 up 1.00000 1.00000 > 16 1.00000 osd.16 up 1.00000 1.00000 > -13 2.00000 disktype cf04sata > 8 1.00000 osd.8 up 1.00000 1.00000 > 9 1.00000 osd.9 up 1.00000 1.00000 > > > Cheers, > J > > -- > Jacek Jarosiewicz > Administrator Systemów Informatycznych > > ---------------------------------------------------------------------------------------- > SUPERMEDIA Sp. z o.o. z siedzibą w Warszawie > ul. Senatorska 13/15, 00-075 Warszawa > Sąd Rejonowy dla m.st.Warszawy, XII Wydział Gospodarczy Krajowego > Rejestru Sądowego, > nr KRS 0000029537; kapitał zakładowy 42.756.000 zł > NIP: 957-05-49-503 > Adres korespondencyjny: ul. Jubilerska 10, 04-190 Warszawa > > ---------------------------------------------------------------------------------------- > SUPERMEDIA -> http://www.supermedia.pl > dostep do internetu - hosting - kolokacja - lacza - telefonia > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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