Hi Ben,

At first glance i would say the CPU's are a bit weak for this setup.
Recommended is to have at least 1 core per OSD. Since you have 8 cores and
10 OSD's there isn't much left for other processes.

Furthermore, did you upgrade the firmware of those DC S4500's to the latest
firmware? (SCV10142)
If not, you can upgrade them via the Intel Data Center upgrade tool:
https://downloadcenter.intel.com/download/27863?v=t

Kind regards,
Caspar

2018-07-04 10:26 GMT+02:00 Benjamin Naber <der-co...@coders-area.de>:

> Hi @all,
>
> im currently in testing for setup an production environment based on the
> following OSD Nodes:
>
> CEPH Version: luminous 12.2.5
>
> 5x OSD Nodes with following specs:
>
> - 8 Core Intel Xeon 2,0 GHZ
>
> - 96GB Ram
>
> - 10x 1,92 TB Intel DC S4500 connectet via SATA
>
> - 4x 10 Gbit NIC 2 bonded via LACP for Backend Network 2 bonded via LACP
> for Backend Network.
>
> if i run some fio benchmark via a VM that ist running on a RBD Device on a
> KVM testing Host. the cluster always runs into slow request warning. Also
> the performance goes heavy down.
>
> If i dump the osd that stucks, i get the following output:
>
> {
>     "ops": [
>         {
>             "description": "osd_op(client.141944.0:359346834 13.1da
> 13:5b8b7fd3:::rbd_data.170a3238e1f29.00000000000000be:head [write
> 2097152~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.475879",
>             "age": 287.180328,
>             "duration": 287.180355,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346834
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.475879",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.476935",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.477547",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.477578",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.477614",
>                         "event": "waiting for subops from 5,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484679",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484681",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.485588",
>                         "event": "sub_op_commit_rec from 5"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346835 13.1da
> 13:5b8b7fd3:::rbd_data.170a3238e1f29.00000000000000be:head [write
> 3145728~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.477065",
>             "age": 287.179143,
>             "duration": 287.179221,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346835
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.477065",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478116",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478178",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478201",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478232",
>                         "event": "waiting for subops from 5,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484695",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484696",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.485621",
>                         "event": "sub_op_commit_rec from 5"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346440 13.11d
> 13:b8afbe4a:::rbd_data.170a3238e1f29.000000000000005c:head [write
> 0~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.091127",
>             "age": 287.565080,
>             "duration": 287.565196,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346440
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.091127",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.092764",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.092787",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093062",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093107",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.099496",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.099502",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.100772",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346441 13.11d
> 13:b8afbe4a:::rbd_data.170a3238e1f29.000000000000005c:head [write
> 1048576~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.092772",
>             "age": 287.563436,
>             "duration": 287.563588,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346441
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.092772",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093766",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093865",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093895",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.093937",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.099505",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.099506",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.100788",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346442 13.11d
> 13:b8afbe4a:::rbd_data.170a3238e1f29.000000000000005c:head [write
> 2097152~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.093773",
>             "age": 287.562434,
>             "duration": 287.562622,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346442
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.093773",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.095388",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.095403",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.095428",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.095466",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.103411",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.103413",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.106365",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346443 13.11d
> 13:b8afbe4a:::rbd_data.170a3238e1f29.000000000000005c:head [write
> 3145728~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.095395",
>             "age": 287.560813,
>             "duration": 287.561037,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346443
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.095395",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.097194",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.098851",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.098878",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.098914",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.103704",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.103706",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.107064",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346172 13.11d
> 13:b88a4b5e:::rbd_data.170a3238e1f29.000000000000001a:head
> [set-alloc-hint object_size 4194304 write_size 4194304,write 0~1048576]
> snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:48.836391",
>             "age": 287.819817,
>             "duration": 287.820078,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346172
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:48.836391",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.837419",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.837438",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.837548",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.837605",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847008",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847013",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.862005",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346372 13.bc
> 13:3d131f8b:::rbd_data.170a3238e1f29.000000000000004b:head [write
> 0~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.023513",
>             "age": 287.632694,
>             "duration": 287.632990,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346372
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.023513",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.025442",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.025464",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.025796",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.025844",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033594",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033600",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.036086",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346173 13.11d
> 13:b88a4b5e:::rbd_data.170a3238e1f29.000000000000001a:head
> [set-alloc-hint object_size 4194304 write_size 4194304,write
> 1048576~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:48.837425",
>             "age": 287.818782,
>             "duration": 287.819113,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346173
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:48.837425",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.838409",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.838427",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.838463",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.838505",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847328",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847330",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.862049",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346373 13.bc
> 13:3d131f8b:::rbd_data.170a3238e1f29.000000000000004b:head [write
> 1048576~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.025449",
>             "age": 287.630759,
>             "duration": 287.631126,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346373
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.025449",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027010",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027030",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027071",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027126",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033603",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033605",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.036143",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346174 13.11d
> 13:b88a4b5e:::rbd_data.170a3238e1f29.000000000000001a:head
> [set-alloc-hint object_size 4194304 write_size 4194304,write
> 2097152~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:48.838414",
>             "age": 287.817793,
>             "duration": 287.818196,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346174
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:48.838414",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.839187",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.839203",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.839229",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.839269",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847345",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847347",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.862060",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346374 13.bc
> 13:3d131f8b:::rbd_data.170a3238e1f29.000000000000004b:head [write
> 2097152~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.027016",
>             "age": 287.629192,
>             "duration": 287.629634,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346374
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.027016",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027972",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.027987",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028017",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028053",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033606",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.033609",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.036159",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346175 13.11d
> 13:b88a4b5e:::rbd_data.170a3238e1f29.000000000000001a:head
> [set-alloc-hint object_size 4194304 write_size 4194304,write
> 3145728~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:48.839192",
>             "age": 287.817015,
>             "duration": 287.817491,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346175
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:48.839192",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.840612",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.840626",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.840658",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.840693",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847361",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.847363",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:48.862089",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346375 13.bc
> 13:3d131f8b:::rbd_data.170a3238e1f29.000000000000004b:head [write
> 3145728~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.027978",
>             "age": 287.628229,
>             "duration": 287.628739,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346375
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.027978",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028846",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028863",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028889",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.028924",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.035948",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.035950",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.038542",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346792 13.bc
> 13:3d313592:::rbd_data.170a3238e1f29.00000000000000b4:head [write
> 0~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.423998",
>             "age": 287.232209,
>             "duration": 287.232753,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346792
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.423998",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.425331",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.425350",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.425655",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.425715",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434856",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434869",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.436410",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346793 13.bc
> 13:3d313592:::rbd_data.170a3238e1f29.00000000000000b4:head [write
> 1048576~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.425349",
>             "age": 287.230859,
>             "duration": 287.231436,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346793
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.425349",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.426349",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.426877",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427022",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427112",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434876",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434877",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.436661",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346794 13.bc
> 13:3d313592:::rbd_data.170a3238e1f29.00000000000000b4:head [write
> 2097152~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.426356",
>             "age": 287.229852,
>             "duration": 287.230461,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346794
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.426356",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427126",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427729",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427771",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.427812",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434878",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.434879",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.436686",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346795 13.bc
> 13:3d313592:::rbd_data.170a3238e1f29.00000000000000b4:head [write
> 3145728~1048576] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.427141",
>             "age": 287.229066,
>             "duration": 287.229715,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346795
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.427141",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.428212",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.431693",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.431730",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.431794",
>                         "event": "waiting for subops from 21,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.437279",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.437282",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.442448",
>                         "event": "sub_op_commit_rec from 21"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346832 13.1da
> 13:5b8b7fd3:::rbd_data.170a3238e1f29.00000000000000be:head [write
> 0~901120] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.473234",
>             "age": 287.182974,
>             "duration": 287.183657,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346832
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.473234",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.474116",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.474135",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.474444",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.474489",
>                         "event": "waiting for subops from 5,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478163",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.478170",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.485418",
>                         "event": "sub_op_commit_rec from 5"
>                     }
>                 ]
>             }
>         },
>         {
>             "description": "osd_op(client.141944.0:359346833 13.1da
> 13:5b8b7fd3:::rbd_data.170a3238e1f29.00000000000000be:head [write
> 901120~1196032] snapc 0=[] ondisk+write+known_if_redirected e2755)",
>             "initiated_at": "2018-07-04 10:00:49.474651",
>             "age": 287.181557,
>             "duration": 287.182274,
>             "type_data": {
>                 "flag_point": "waiting for sub ops",
>                 "client_info": {
>                     "client": "client.141944",
>                     "client_addr": "10.111.90.1:0/3532639465",
>                     "tid": 359346833
>                 },
>                 "events": [
>                     {
>                         "time": "2018-07-04 10:00:49.474651",
>                         "event": "initiated"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.475829",
>                         "event": "queued_for_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.475845",
>                         "event": "reached_pg"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.475881",
>                         "event": "started"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.475923",
>                         "event": "waiting for subops from 5,26"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484417",
>                         "event": "op_commit"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.484420",
>                         "event": "op_applied"
>                     },
>                     {
>                         "time": "2018-07-04 10:00:49.485539",
>                         "event": "sub_op_commit_rec from 5"
>                     }
>                 ]
>             }
>         }
>     ],
>     "num_ops": 20
> }
>
> can someone explain me how i can find the source of the Problem ?
>
> kind regards
>
> Ben
> _______________________________________________
> ceph-users mailing list
> ceph-users@lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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