I have setup a new linux cluster to allow migration from our old SAN based cluster to a new cluster with ceph.
All systems running centos 7.2 with the 3.10.0-327.36.1 kernel.
I am basically running stock ceph settings, with just turning the write cache off via hdparm on the drives, and temporarily turning of scrubbing.
The 4 ceph servers are all Dell 730XD with 128GB memory, and dual xeon. So Server performance should be good. Since I am running cephfs, I have tiering setup.
Each server has 4 – 4TB drives for the erasure code pool, with K=3 and M=1. So the idea is to ensure a single host failure.
Each server also has a 1TB Seagate 850 Pro SSD for the cache drive, in a replicated set with size=2
The cache tier also has a 128GB SM863 SSD that is being used as a journal for the cache SSD. It has power loss protection
My crush map is setup to ensure the cache pool uses only the 4 850 pro and the erasure code uses only the 16 spinning 4TB drives.
The problems that I am seeing is that I start copying data from our old san to the ceph volume, and once the cache tier gets to my target_max_bytes of 1.4 TB, I start seeing:
HEALTH_WARN 63 requests are blocked > 32 sec; 1 osds have slow requests; noout,noscrub,nodeep-scrub,sortbitwise flag(s) set
26 ops are blocked > 65.536 sec on osd.0
37 ops are blocked > 32.768 sec on osd.0
1 osds have slow requests
noout,noscrub,nodeep-scrub,sortbitwise flag(s) set
osd.0 is the cache ssd
If I watch iostat on the cache ssd, I see the queue lengths are high and the await are high
Below is the iostat on the cache drive (osd.0) on the first host. The avgqu-sz is between 87 and 182 and the await is between 88ms and 1193ms
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
sdb
0.00 0.33 9.00 84.33 0.96 20.11 462.40 75.92 397.56 125.67 426.58 10.70 99.90
0.00 0.67 30.00 87.33 5.96 21.03 471.20 67.86 910.95 87.00 1193.99 8.27 97.07
0.00 16.67 33.00 289.33 4.21 18.80 146.20 29.83 88.99 93.91 88.43 3.10 99.83
0.00 7.33 7.67 261.67 1.92 19.63 163.81 117.42 331.97 182.04 336.36 3.71 100.00
If I look at the iostat for all the drives, only the cache ssd drive is backed up
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
Sdg (journal for cache drive)
0.00 6.33 0.00 8.00 0.00 0.07 19.04 0.00 0.33 0.00 0.33 0.33 0.27
Sdb (cache drive)
0.00 0.33 3.33 82.00 0.83 20.07 501.68 106.75 1057.81 269.40 1089.86 11.72 100.00
Sda (4TB EC)
0.00 0.00 0.00 4.00 0.00 0.02 9.33 0.00 0.00 0.00 0.00 0.00 0.00
Sdd (4TB EC)
0.00 0.00 0.00 2.33 0.00 0.45 392.00 0.08 34.00 0.00 34.00 6.86 1.60
Sdf (4TB EC)
0.00 14.00 0.00 26.00 0.00 0.22 17.71 1.00 38.55 0.00 38.55 0.68 1.77
Sdc (4TB EC)
0.00 0.00 0.00 1.33 0.00 0.01 8.75 0.02 12.25 0.00 12.25 12.25 1.63
While at this time is just complaining about slow osd.0, sometimes the other cache tier ssds show some slow response, but not as frequently.
I occasionally see complaints about a client not responding to cache pressure, and yesterday while copying serveral terabytes, the client doing the copy was noted for failing to respond to capability release, and I ended up rebooting it.
I just seems the cluster isn’t handling large amounts of data copies, like and nfs or san based volume would, and I am worried about moving our users to a cluster that already is showing signs of performance issues, even when I am just doing a copy with no other users. I am doing only one rsync at a time.
Is the problem that I need to user a later kernel for the clients mounting the volume ? I have read some posts about that, but the docs say centos 7 with 3.10 is ok.
Do I need more drives in my cache pool? I only have 4 ssd drive in the cache pool (one on each host), with each having a separate journal drive.
But is that too much of a hot spot since all i/o has to go to the cache layer?
It seems like my ssds should be able to keep up with a single rsync copy.
Is there something set wrong on my ssds that they cant keep up?
I put the metadata pool on the ssd cache tier drives as well.
Any ideas where the problem is or what I need to change to make this stable?
Thanks. Additional details below
The ceph osd tier drives are osd 0, 5, 10, 15
ceph df
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
63155G 50960G 12195G 19.31
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
cephfs-metadata 15 58943k 0 523G 28436
cephfs-data 16 7382G 15.59 36499G 5013128
cephfs-cache 17 1124G 3.56 523G 298348
ceph osd df
ID WEIGHT REWEIGHT SIZE USE AVAIL %USE VAR PGS
0 1.00000 1.00000 931G 669G 261G 71.88 3.72 280
5 1.00000 1.00000 931G 526G 404G 56.51 2.93 259
10 1.00000 1.00000 931G 589G 341G 63.35 3.28 266
15 1.00000 1.00000 931G 468G 462G 50.33 2.61 219
1 1.00000 1.00000 3714G 672G 3041G 18.11 0.94 139
2 1.00000 1.00000 3714G 593G 3120G 15.98 0.83 122
3 1.00000 1.00000 3714G 585G 3128G 15.77 0.82 121
4 1.00000 1.00000 3714G 632G 3081G 17.04 0.88 130
6 1.00000 1.00000 3714G 589G 3124G 15.87 0.82 120
7 1.00000 1.00000 3714G 627G 3087G 16.89 0.87 130
8 1.00000 1.00000 3714G 638G 3076G 17.18 0.89 132
9 1.00000 1.00000 3714G 630G 3083G 16.98 0.88 130
11 1.00000 1.00000 3714G 646G 3067G 17.41 0.90 132
12 1.00000 1.00000 3714G 580G 3133G 15.63 0.81 120
13 1.00000 1.00000 3714G 624G 3089G 16.82 0.87 129
14 1.00000 1.00000 3714G 633G 3081G 17.05 0.88 131
16 1.00000 1.00000 3714G 589G 3124G 15.88 0.82 122
17 1.00000 1.00000 3714G 624G 3090G 16.80 0.87 129
18 1.00000 1.00000 3714G 614G 3099G 16.55 0.86 127
19 1.00000 1.00000 3714G 656G 3057G 17.68 0.92 134
15 1.00000 1.00000 931G 468G 462G 50.33 2.61 219
16 1.00000 1.00000 3714G 589G 3124G 15.88 0.82 122
17 1.00000 1.00000 3714G 624G 3090G 16.80 0.87 129
18 1.00000 1.00000 3714G 614G 3099G 16.55 0.86 127
19 1.00000 1.00000 3714G 656G 3057G 17.68 0.92 134
10 1.00000 1.00000 931G 589G 341G 63.35 3.28 266
11 1.00000 1.00000 3714G 646G 3067G 17.41 0.90 132
12 1.00000 1.00000 3714G 580G 3133G 15.63 0.81 120
13 1.00000 1.00000 3714G 624G 3089G 16.82 0.87 129
14 1.00000 1.00000 3714G 633G 3081G 17.05 0.88 131
5 1.00000 1.00000 931G 526G 404G 56.51 2.93 259
6 1.00000 1.00000 3714G 589G 3124G 15.87 0.82 120
7 1.00000 1.00000 3714G 627G 3087G 16.89 0.87 130
8 1.00000 1.00000 3714G 638G 3076G 17.18 0.89 132
9 1.00000 1.00000 3714G 630G 3083G 16.98 0.88 130
0 1.00000 1.00000 931G 669G 261G 71.88 3.72 280
1 1.00000 1.00000 3714G 672G 3041G 18.11 0.94 139
2 1.00000 1.00000 3714G 593G 3120G 15.98 0.83 122
3 1.00000 1.00000 3714G 585G 3128G 15.77 0.82 121
4 1.00000 1.00000 3714G 632G 3081G 17.04 0.88 130
TOTAL 63155G 12195G 50959G 19.31
ceph osd tree
ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY
-14 4.00000 root ssd
-1 1.00000 disktype darkjedi-ceph01_ssd
0 1.00000 osd.0 up 1.00000 1.00000
-4 1.00000 disktype darkjedi-ceph02_ssd
5 1.00000 osd.5 up 1.00000 1.00000
-7 1.00000 disktype darkjedi-ceph03_ssd
10 1.00000 osd.10 up 1.00000 1.00000
-10 1.00000 disktype darkjedi-ceph04_ssd
15 1.00000 osd.15 up 1.00000 1.00000
-13 16.00000 root spinning
-2 4.00000 disktype darkjedi-ceph01_spinning
1 1.00000 osd.1 up 1.00000 1.00000
2 1.00000 osd.2 up 1.00000 1.00000
3 1.00000 osd.3 up 1.00000 1.00000
4 1.00000 osd.4 up 1.00000 1.00000
-5 4.00000 disktype darkjedi-ceph02_spinning
6 1.00000 osd.6 up 1.00000 1.00000
7 1.00000 osd.7 up 1.00000 1.00000
8 1.00000 osd.8 up 1.00000 1.00000
9 1.00000 osd.9 up 1.00000 1.00000
-8 4.00000 disktype darkjedi-ceph03_spinning
11 1.00000 osd.11 up 1.00000 1.00000
12 1.00000 osd.12 up 1.00000 1.00000
13 1.00000 osd.13 up 1.00000 1.00000
14 1.00000 osd.14 up 1.00000 1.00000
-11 4.00000 disktype darkjedi-ceph04_spinning
16 1.00000 osd.16 up 1.00000 1.00000
17 1.00000 osd.17 up 1.00000 1.00000
18 1.00000 osd.18 up 1.00000 1.00000
19 1.00000 osd.19 up 1.00000 1.00000
-12 5.00000 host darkjedi-ceph04
-10 1.00000 disktype darkjedi-ceph04_ssd
15 1.00000 osd.15 up 1.00000 1.00000
-11 4.00000 disktype darkjedi-ceph04_spinning
16 1.00000 osd.16 up 1.00000 1.00000
17 1.00000 osd.17 up 1.00000 1.00000
18 1.00000 osd.18 up 1.00000 1.00000
19 1.00000 osd.19 up 1.00000 1.00000
-9 5.00000 host darkjedi-ceph03
-7 1.00000 disktype darkjedi-ceph03_ssd
10 1.00000 osd.10 up 1.00000 1.00000
-8 4.00000 disktype darkjedi-ceph03_spinning
11 1.00000 osd.11 up 1.00000 1.00000
12 1.00000 osd.12 up 1.00000 1.00000
13 1.00000 osd.13 up 1.00000 1.00000
14 1.00000 osd.14 up 1.00000 1.00000
-6 6.00000 host darkjedi-ceph02
-4 2.00000 disktype darkjedi-ceph02_ssd
5 1.00000 osd.5 up 1.00000 1.00000
-5 4.00000 disktype darkjedi-ceph02_spinning
6 1.00000 osd.6 up 1.00000 1.00000
7 1.00000 osd.7 up 1.00000 1.00000
8 1.00000 osd.8 up 1.00000 1.00000
9 1.00000 osd.9 up 1.00000 1.00000
-3 5.00000 host darkjedi-ceph01
-1 1.00000 disktype darkjedi-ceph01_ssd
0 1.00000 osd.0 up 1.00000 1.00000
-2 4.00000 disktype darkjedi-ceph01_spinning
1 1.00000 osd.1 up 1.00000 1.00000
2 1.00000 osd.2 up 1.00000 1.00000
3 1.00000 osd.3 up 1.00000 1.00000
4 1.00000 osd.4 up 1.00000 1.00000
ceph -w
cluster 62ed97d6-adf4-12e4-8fd5-3d9701b22b86
health HEALTH_WARN
72 requests are blocked > 32 sec
noout,noscrub,nodeep-scrub,sortbitwise flag(s) set
monmap e2: 3 mons at {darkjedi-ceph01=192.168.19.241:6789/0,darkjedi-ceph02=192.168.19.242:6789/0,darkjedi-ceph03=192.168.19.243:6789/0}
election epoch 120, quorum 0,1,2 darkjedi-ceph01,darkjedi-ceph02,darkjedi-ceph03
fsmap e1156: 1/1/1 up {0=darkjedi-ceph04=up:active}, 1 up:standby
osdmap e4294: 20 osds: 20 up, 20 in
flags noout,noscrub,nodeep-scrub,sortbitwise
pgmap v674643: 1024 pgs, 3 pools, 8513 GB data, 5216 kobjects
12204 GB used, 50950 GB / 63155 GB avail
1024 active+clean
client io 4039 kB/s wr, 0 op/s rd, 4 op/s wr
cache io 10080 kB/s flush, 8064 kB/s evict, 0 op/s promote, 1 PG(s) evicting
2016-10-19 07:27:42.063881 mon.0 [INF] pgmap v674642: 1024 pgs: 1024 active+clean; 8513 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 10093 kB/s wr, 4 op/s
2016-10-19 07:27:38.539687 osd.0 [WRN] 47 slow requests, 1 included below; oldest blocked for > 87.453888 secs
2016-10-19 07:27:38.539695 osd.0 [WRN] slow request 30.771983 seconds old, received at 2016-10-19 07:27:07.767636: osd_op(client.1234553.1:412446 17.6f7367c 10000323d95.00000041 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:39.539883 osd.0 [WRN] 48 slow requests, 2 included below; oldest blocked for > 88.454076 secs
2016-10-19 07:27:39.539890 osd.0 [WRN] slow request 60.016825 seconds old, received at 2016-10-19 07:26:39.522982: osd_op(client.1234553.1:412252 17.1220dbd9 10000323d93.0000001b [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:39.539897 osd.0 [WRN] slow request 30.063037 seconds old, received at 2016-10-19 07:27:09.476770: osd_op(client.1234553.1:412458 17.dac4885c 10000323d95.0000004d [write 0~2260992 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:40.540136 osd.0 [WRN] 53 slow requests, 5 included below; oldest blocked for > 89.454282 secs
2016-10-19 07:27:40.540148 osd.0 [WRN] slow request 30.426319 seconds old, received at 2016-10-19 07:27:10.113694: osd_op(client.1234553.1:412483 17.dd3448b3 10000323d96.00000018 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:40.540153 osd.0 [WRN] slow request 30.557129 seconds old, received at 2016-10-19 07:27:09.982884: osd_op(client.1234553.1:412471 17.6dae7fe6 10000323d96.0000000c [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:40.540160 osd.0 [WRN] slow request 60.947034 seconds old, received at 2016-10-19 07:26:39.592979: osd_op(client.1234553.1:412259 17.5fecfad9 10000323d93.00000022 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:40.540165 osd.0 [WRN] slow request 30.218226 seconds old, received at 2016-10-19 07:27:10.321787: osd_op(client.1234553.1:412487 17.7e783a0b 10000323d96.0000001c [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:40.540173 osd.0 [WRN] slow request 30.669424 seconds old, received at 2016-10-19 07:27:09.870589: osd_op(client.1234553.1:412460 17.242c68e6 10000323d96.00000001 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:41.540415 osd.0 [WRN] 56 slow requests, 4 included below; oldest blocked for > 90.454559 secs
2016-10-19 07:27:41.540426 osd.0 [WRN] slow request 30.591025 seconds old, received at 2016-10-19 07:27:10.949264: osd_op(client.1234553.1:412490 17.f00571c7 10000323d96.0000001f [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:41.540431 osd.0 [WRN] slow request 30.584468 seconds old, received at 2016-10-19 07:27:10.955822: osd_op(client.1234553.1:412493 17.e5c93438 10000323d96.00000022 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:41.540438 osd.0 [WRN] slow request 30.570790 seconds old, received at 2016-10-19 07:27:10.969499: osd_op(client.1234553.1:412499 17.75f41c27 10000323d96.00000028 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:41.540445 osd.0 [WRN] slow request 31.588275 seconds old, received at 2016-10-19 07:27:09.952014: osd_op(client.1234553.1:412463 17.e66e96b6 10000323d96.00000004 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:42.540685 osd.0 [WRN] 56 slow requests, 4 included below; oldest blocked for > 91.454840 secs
2016-10-19 07:27:42.540694 osd.0 [WRN] slow request 60.595040 seconds old, received at 2016-10-19 07:26:41.945531: osd_op(client.1234553.1:412276 17.cae2b8f3 10000323d93.00000033 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:42.540702 osd.0 [WRN] slow request 30.032041 seconds old, received at 2016-10-19 07:27:12.508530: osd_op(client.1234553.1:412521 17.ec0d7938 10000323d96.0000003e [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:42.540716 osd.0 [WRN] slow request 60.589088 seconds old, received at 2016-10-19 07:26:41.951483: osd_op(client.1234553.1:412277 17.10107d9a 10000323d93.00000034 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently waiting for blocked object
2016-10-19 07:27:42.540726 osd.0 [WRN] slow request 60.573651 seconds old, received at 2016-10-19 07:26:41.966920: osd_op(client.1234553.1:412287 17.cac5d907 10000323d93.0000003e [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:43.073014 mon.0 [INF] pgmap v674643: 1024 pgs: 1024 active+clean; 8513 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 4039 kB/s wr, 4 op/s
2016-10-19 07:27:43.147883 mon.0 [INF] HEALTH_WARN; 72 requests are blocked > 32 sec; noout,noscrub,nodeep-scrub,sortbitwise flag(s) set
2016-10-19 07:27:43.540977 osd.0 [WRN] 60 slow requests, 5 included below; oldest blocked for > 92.455114 secs
2016-10-19 07:27:43.540987 osd.0 [WRN] slow request 30.946896 seconds old, received at 2016-10-19 07:27:12.593949: osd_op(client.1234553.1:412553 17.780b5c32 10000323d97.00000010 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:43.540992 osd.0 [WRN] slow request 30.940430 seconds old, received at 2016-10-19 07:27:12.600414: osd_op(client.1234553.1:412554 17.62f5a288 10000323d97.00000011 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:43.541002 osd.0 [WRN] slow request 30.930237 seconds old, received at 2016-10-19 07:27:12.610608: osd_op(client.1234553.1:412557 17.e6fe4157 10000323d97.00000014 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:43.541009 osd.0 [WRN] slow request 30.669228 seconds old, received at 2016-10-19 07:27:12.871617: osd_op(client.1234553.1:412568 17.dd1ccfe0 10000323d97.0000001f [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:43.541018 osd.0 [WRN] slow request 60.284696 seconds old, received at 2016-10-19 07:26:43.256148: osd_op(client.1234553.1:412302 17.dcfdcaad 10000323d93.0000004d [write 0~2260992 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:44.083654 mon.0 [INF] pgmap v674644: 1024 pgs: 1024 active+clean; 8513 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 4059 kB/s wr, 2 op/s
2016-10-19 07:27:45.105055 mon.0 [INF] pgmap v674645: 1024 pgs: 1024 active+clean; 8513 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 26360 kB/s wr, 6 op/s
2016-10-19 07:27:46.116200 mon.0 [INF] pgmap v674646: 1024 pgs: 1024 active+clean; 8514 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 90603 kB/s wr, 23 op/s
2016-10-19 07:27:47.126401 mon.0 [INF] pgmap v674647: 1024 pgs: 1024 active+clean; 8514 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 114 MB/s wr, 38 op/s
2016-10-19 07:27:48.145239 mon.0 [INF] pgmap v674648: 1024 pgs: 1024 active+clean; 8514 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 100 MB/s wr, 49 op/s
2016-10-19 07:27:49.153554 mon.0 [INF] pgmap v674649: 1024 pgs: 1024 active+clean; 8514 GB data, 12204 GB used, 50950 GB / 63155 GB avail; 64589 kB/s wr, 30 op/s
2016-10-19 07:27:50.158547 mon.0 [INF] pgmap v674650: 1024 pgs: 1024 active+clean; 8514 GB data, 12205 GB used, 50950 GB / 63155 GB avail; 34499 kB/s wr, 8 op/s
2016-10-19 07:27:51.175699 mon.0 [INF] pgmap v674651: 1024 pgs: 1024 active+clean; 8514 GB data, 12205 GB used, 50949 GB / 63155 GB avail; 79100 kB/s wr, 19 op/s
2016-10-19 07:27:52.180504 mon.0 [INF] pgmap v674652: 1024 pgs: 1024 active+clean; 8514 GB data, 12205 GB used, 50950 GB / 63155 GB avail; 95241 kB/s wr, 71 op/s
2016-10-19 07:27:44.541269 osd.0 [WRN] 59 slow requests, 3 included below; oldest blocked for > 93.455423 secs
2016-10-19 07:27:44.541276 osd.0 [WRN] slow request 31.985270 seconds old, received at 2016-10-19 07:27:12.555884: osd_op(client.1234553.1:412536 17.30639c12 10000323d96.0000004d [write 0~2260992 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:44.541282 osd.0 [WRN] slow request 31.980479 seconds old, received at 2016-10-19 07:27:12.560674: osd_op(client.1234553.1:412537 17.5c9321a8 10000323d97.00000000 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:44.541287 osd.0 [WRN] slow request 31.954483 seconds old, received at 2016-10-19 07:27:12.586670: osd_op(client.1234553.1:412545 17.49eb1b07 10000323d97.00000008 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:50.542250 osd.0 [WRN] 53 slow requests, 1 included below; oldest blocked for > 99.456434 secs
2016-10-19 07:27:50.542261 osd.0 [WRN] slow request 30.322487 seconds old, received at 2016-10-19 07:27:20.219678: osd_op(client.1234553.1:412574 17.6c703de 10000323d97.00000025 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:51.542498 osd.0 [WRN] 50 slow requests, 3 included below; oldest blocked for > 100.456658 secs
2016-10-19 07:27:51.542505 osd.0 [WRN] slow request 60.740689 seconds old, received at 2016-10-19 07:26:50.801700: osd_op(client.1234553.1:412320 17.802362e0 10000323d94.00000011 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:51.542513 osd.0 [WRN] slow request 60.574101 seconds old, received at 2016-10-19 07:26:50.968288: osd_op(client.1234553.1:412321 17.c529e2e6 10000323d94.00000012 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:51.542518 osd.0 [WRN] slow request 30.452691 seconds old, received at 2016-10-19 07:27:21.089698: osd_op(client.1234553.1:412576 17.65178e57 10000323d97.00000027 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:52.542740 osd.0 [WRN] 46 slow requests, 4 included below; oldest blocked for > 101.456908 secs
2016-10-19 07:27:52.542746 osd.0 [WRN] slow request 30.674005 seconds old, received at 2016-10-19 07:27:21.868634: osd_op(client.1234553.1:412582 17.722c7ade 10000323d97.0000002d [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:52.542757 osd.0 [WRN] slow request 60.439945 seconds old, received at 2016-10-19 07:26:52.102693: osd_op(client.1234553.1:412333 17.f8df72c7 10000323d94.0000001e [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:52.542763 osd.0 [WRN] slow request 30.875550 seconds old, received at 2016-10-19 07:27:21.667089: osd_op(client.1234553.1:412581 17.13ef9fd2 10000323d97.0000002c [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:52.542770 osd.0 [WRN] slow request 60.317892 seconds old, received at 2016-10-19 07:26:52.224747: osd_op(client.1234553.1:412338 17.7416d4bb 10000323d94.00000023 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently waiting for blocked object
2016-10-19 07:27:53.209272 mon.0 [INF] pgmap v674653: 1024 pgs: 1024 active+clean; 8514 GB data, 12205 GB used, 50949 GB / 63155 GB avail; 73115 kB/s wr, 75 op/s
2016-10-19 07:27:53.542922 osd.0 [WRN] 45 slow requests, 1 included below; oldest blocked for > 98.523012 secs
2016-10-19 07:27:53.542934 osd.0 [WRN] slow request 30.691735 seconds old, received at 2016-10-19 07:27:22.851117: osd_op(client.1234553.1:412586 17.905a3e43 10000323d97.00000031 [write 0~4194304 [1@-1]] snapc 1=[] ondisk+write e4294) currently reached_pg
2016-10-19 07:27:54.219455 mon.0 [INF] pgmap v674654: 1024 pgs: 1024 active+clean; 8514 GB data, 12205 GB used, 50949 GB / 63155 GB avail; 50465 kB/s wr, 21 op/s
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