[LU-13526] Client eviction mitigation

Wed, 6 Jan 2021 13:04:27 +0000
We have a user that writes/read 52000 restart files using 52000 cores on 1300 nodes. During write cycle a several clients were evicted. We would like to know if this is expected. What can we do to mitigate client evictions or manage client load.
Filesystem background:
OST# = 359
OSS# = 20
Filesystem Size= 18P
Free space = %5
 Apr 29 14:36:12 nbp2-oss11 rsyslogd: -- MARK --
Apr 29 14:39:27 nbp2-oss11 kernel: [13220183.158983] Lustre: 17955:0:(service.c:1372:ptlrpc_at_send_early_reply()) @@@ Couldn't add any time (30/30), not sending early reply
Apr 29 14:39:27 nbp2-oss11 kernel: [13220183.158983]   req@ffff91a2c9552050 x1664344156868944/t0(0) o4->fd329a67-7aa9-5ce6-277a-db7f93ba95aa@10.149.13.21@o2ib313:292/0 lens 488/448 e 0 to 0 dl 1588196397 ref 2 fl Interpret:/0/0 rc 0/0
Apr 29 14:39:27 nbp2-oss11 kernel: [13220183.247695] Lustre: 17955:0:(service.c:1372:ptlrpc_at_send_early_reply()) Skipped 34664 previous similar messages
Apr 29 14:40:28 nbp2-oss11 kernel: [13220244.019145] LustreError: 17999:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after 0+0s  req@ffff91a64368a850 x1664344138126592/t0(0) o4->b563eaec-b2d0-3747-168c-69ed81119736@10.149.6.81@o2ib313:323/0 lens 488/448 e 0 to 0 dl 1588196428 ref 1 fl Interpret:/0/0 rc 0/0
Apr 29 14:40:28 nbp2-oss11 kernel: [13220244.025295] Lustre: nbp2-OST00fa: Bulk IO write error with 0739fb77-7542-56ca-6966-bffa4195aecf (at 10.149.16.35@o2ib313), client will retry: rc = -110
Apr 29 14:40:28 nbp2-oss11 kernel: [13220244.025297] Lustre: Skipped 75 previous similar messages
Apr 29 14:40:28 nbp2-oss11 kernel: [13220244.153362] LustreError: 17999:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 75 previous similar messages
Apr 29 14:40:28 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.6.81@o2ib313:323/0 lens 488/448 e 0 to 0 dl 1588196428 ref 1 fl Interpret
Apr 29 14:40:29 nbp2-oss11 kernel: [13220245.018264] LustreError: 17858:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after 0+0s  req@ffff918d61360050 x1664344138633104/t0(0) o4->34a9ec93-e179-3f1b-62a7-22ad5a22aea9@10.149.6.119@o2ib313:324/0 lens 488/448 e 0 to 0 dl 1588196429 ref 1 fl Interpret:/0/0 rc 0/0
Apr 29 14:40:29 nbp2-oss11 kernel: [13220245.094523] LustreError: 17858:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 30 previous similar messages
Apr 29 14:40:29 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.6.119@o2ib313:324/0 lens 488/448 e 0 to 0 dl 1588196429 ref 1 fl Interpret
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.008901] LustreError: 17939:0:(service.c:2128:ptlrpc_server_handle_request()) @@@ Dropping timed-out request from 12345-10.149.7.10@o2ib313: deadline 348:1s ago
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.008901]   req@ffff919fd3fb2050 x1664344146942672/t0(0) o4->66debb2a-1df9-c27b-c48d-871b7d8fa964@10.149.7.10@o2ib313:324/0 lens 488/0 e 0 to 0 dl 1588196429 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.013387] Lustre: 17026:0:(service.c:2165:ptlrpc_server_handle_request()) @@@ Request took longer than estimated (348:1s); client may timeout.  req@ffff919fd3fb4050 x1664344147733408/t0(0) o4->167cdb14-3f34-ede1-05b4-a382f87e8f1d@10.149.15.213@o2ib313:324/0 lens 488/448 e 0 to 0 dl 1588196429 ref 1 fl Complete:/0/ffffffff rc -110/-1
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.013389] Lustre: 17026:0:(service.c:2165:ptlrpc_server_handle_request()) Skipped 27666 previous similar messages
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.124392] LustreError: 17854:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after -1+1s  req@ffff919516f30050 x1664344144144480/t0(0) o4->dbc49150-1d9b-0b95-85cb-88713b8bcc5c@10.149.8.228@o2ib313:324/0 lens 488/448 e 0 to 0 dl 1588196429 ref 1 fl Interpret:/0/0 rc 0/0
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.124394] LustreError: 17854:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 122 previous similar messages
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.124434] Lustre: nbp2-OST014a: Bulk IO write error with dbc49150-1d9b-0b95-85cb-88713b8bcc5c (at 10.149.8.228@o2ib313), client will retry: rc = -110
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.124435] Lustre: Skipped 177 previous similar messages
Apr 29 14:40:30 nbp2-oss11 kernel: [13220246.392656] LustreError: 17939:0:(service.c:2128:ptlrpc_server_handle_request()) Skipped 27619 previous similar messages
Apr 29 14:40:30 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.8.228@o2ib313:324/0 lens 488/448 e 0 to 0 dl 1588196429 ref 1 fl Interpret
Apr 29 14:40:42 nbp2-oss11 kernel: [13220258.327977] Lustre: 18004:0:(service.c:1372:ptlrpc_at_send_early_reply()) @@@ Couldn't add any time (30/30), not sending early reply
Apr 29 14:40:42 nbp2-oss11 kernel: [13220258.327977]   req@ffff91a4e91df850 x1664344145875136/t0(0) o4->c4bf71af-35ca-1c64-8e3c-551577dd6547@10.149.15.180@o2ib313:367/0 lens 488/0 e 1 to 0 dl 1588196472 ref 2 fl New:/0/ffffffff rc 0/-1
Apr 29 14:40:42 nbp2-oss11 kernel: [13220258.416941] Lustre: 18004:0:(service.c:1372:ptlrpc_at_send_early_reply()) Skipped 20239 previous similar messages
Apr 29 14:41:38 nbp2-oss11 kernel: [13220314.386763] Lustre: nbp2-OST0096: Connection restored to 665eb153-c8b4-ef08-9aa9-bc7678541e13 (at 10.151.48.225@o2ib)
Apr 29 14:41:38 nbp2-oss11 kernel: [13220314.386768] Lustre: Skipped 7880 previous similar messages
Apr 29 14:41:45 nbp2-oss11 kernel: [13220321.021082] LustreError: 17858:0:(service.c:2128:ptlrpc_server_handle_request()) @@@ Dropping timed-out request from 12345-10.149.12.51@o2ib313: deadline 349:36s ago
Apr 29 14:41:45 nbp2-oss11 kernel: [13220321.021082]   req@ffff91a58fec7050 x1664344142537360/t0(0) o4->3df9289b-2501-4c35-2d7e-72ef6a69b9d1@10.149.12.51@o2ib313:364/0 lens 488/0 e 1 to 0 dl 1588196469 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:41:45 nbp2-oss11 kernel: [13220321.027758] Lustre: 26698:0:(service.c:2165:ptlrpc_server_handle_request()) @@@ Request took longer than estimated (349:36s); client may timeout.  req@ffff91a58fec6050 x1664344142537344/t0(0) o4->3df9289b-2501-4c35-2d7e-72ef6a69b9d1@10.149.12.51@o2ib313:364/0 lens 488/0 e 1 to 0 dl 1588196469 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:41:45 nbp2-oss11 kernel: [13220321.027760] Lustre: 26698:0:(service.c:2165:ptlrpc_server_handle_request()) Skipped 10633 previous similar messages
Apr 29 14:41:45 nbp2-oss11 kernel: [13220321.240374] LustreError: 17858:0:(service.c:2128:ptlrpc_server_handle_request()) Skipped 10622 previous similar messages
Apr 29 14:43:12 nbp2-oss11 kernel: [13220408.647670] Lustre: 26697:0:(service.c:1372:ptlrpc_at_send_early_reply()) @@@ Couldn't add any time (30/30), not sending early reply
Apr 29 14:43:12 nbp2-oss11 kernel: [13220408.647670]   req@ffff91a3564d9850 x1664344152516880/t0(0) o4->53e3df5f-39de-a589-433b-daa41393218b@10.149.8.94@o2ib313:517/0 lens 488/0 e 1 to 0 dl 1588196622 ref 2 fl New:/0/ffffffff rc 0/-1
Apr 29 14:43:12 nbp2-oss11 kernel: [13220408.736173] Lustre: 26697:0:(service.c:1372:ptlrpc_at_send_early_reply()) Skipped 34738 previous similar messages
Apr 29 14:44:15 nbp2-oss11 kernel: [13220471.042441] LustreError: 14440:0:(service.c:2128:ptlrpc_server_handle_request()) @@@ Dropping timed-out request from 12345-10.149.6.20@o2ib313: deadline 349:100s ago
Apr 29 14:44:15 nbp2-oss11 kernel: [13220471.042441]   req@ffff91a67453a850 x1664344143041968/t0(0) o4->446d7667-304c-c3a9-7da5-ea05a2e11855@10.149.6.20@o2ib313:450/0 lens 488/0 e 1 to 0 dl 1588196555 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:44:15 nbp2-oss11 kernel: [13220471.053248] Lustre: 26698:0:(service.c:2165:ptlrpc_server_handle_request()) @@@ Request took longer than estimated (349:100s); client may timeout.  req@ffff91a67453a050 x1664344151066320/t0(0) o4->6734aee0-1342-6be1-80c5-28dcfe56f3d5@10.149.15.121@o2ib313:450/0 lens 488/0 e 1 to 0 dl 1588196555 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:44:15 nbp2-oss11 kernel: [13220471.053250] Lustre: 26698:0:(service.c:2165:ptlrpc_server_handle_request()) Skipped 21018 previous similar messages
Apr 29 14:44:15 nbp2-oss11 kernel: [13220471.262026] LustreError: 14440:0:(service.c:2128:ptlrpc_server_handle_request()) Skipped 21013 previous similar messages
Apr 29 14:45:03 nbp2-oss11 kernel: [13220519.060553] Lustre: nbp2-OST0122: Client c6660b13-b7df-d499-0da4-0bcd5b1ab97e (at 10.149.12.124@o2ib313) reconnecting
Apr 29 14:45:03 nbp2-oss11 kernel: [13220519.093100] Lustre: Skipped 4078 previous similar messages
Apr 29 14:46:07 nbp2-oss11 kernel: [13220583.068725] Lustre: nbp2-OST001e: Client e1d5b360-ccb3-148c-b5d5-84fa7d138daf (at 10.149.12.79@o2ib313) reconnecting
Apr 29 14:46:07 nbp2-oss11 kernel: [13220583.101037] Lustre: Skipped 6438 previous similar messages
Apr 29 14:48:13 nbp2-oss11 kernel: [13220709.291045] Lustre: 26723:0:(service.c:1372:ptlrpc_at_send_early_reply()) @@@ Couldn't add any time (30/30), not sending early reply
Apr 29 14:48:13 nbp2-oss11 kernel: [13220709.291045]   req@ffff91a5f248d050 x1664344180110656/t0(0) o4->4c9dc38a-8f49-9a8d-327d-79c3d54a46c4@10.149.6.139@o2ib313:63/0 lens 488/0 e 1 to 0 dl 1588196923 ref 2 fl New:/0/ffffffff rc 0/-1
Apr 29 14:48:13 nbp2-oss11 kernel: [13220709.379519] Lustre: 26723:0:(service.c:1372:ptlrpc_at_send_early_reply()) Skipped 29510 previous similar messages
Apr 29 14:48:15 nbp2-oss11 kernel: [13220711.121311] Lustre: nbp2-OST0032: Client 0afcf4fb-d9af-39fd-ea80-b5690be000e5 (at 10.149.11.180@o2ib313) reconnecting
Apr 29 14:48:15 nbp2-oss11 kernel: [13220711.153862] Lustre: Skipped 1964 previous similar messages
Apr 29 14:49:15 nbp2-oss11 kernel: [13220771.090816] Lustre: 17088:0:(service.c:2165:ptlrpc_server_handle_request()) @@@ Request took longer than estimated (441:86s); client may timeout.  req@ffff91a366d40050 x1664344157372688/t0(0) o4->7ba7dfa5-dbae-cafb-8bc0-e9253d5f248b@10.149.13.10@o2ib313:9/0 lens 504/0 e 1 to 0 dl 1588196869 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:49:15 nbp2-oss11 kernel: [13220771.178775] Lustre: 17088:0:(service.c:2165:ptlrpc_server_handle_request()) Skipped 42720 previous similar messages
Apr 29 14:49:15 nbp2-oss11 kernel: [13220771.396142] LustreError: 26723:0:(service.c:2128:ptlrpc_server_handle_request()) @@@ Dropping timed-out request from 12345-10.149.7.93@o2ib313: deadline 441:85s ago
Apr 29 14:49:15 nbp2-oss11 kernel: [13220771.396142]   req@ffff91a5a79da850 x1664344159391440/t0(0) o4->9a170297-06d1-674c-6a91-07c8fca552d6@10.149.7.93@o2ib313:10/0 lens 488/0 e 1 to 0 dl 1588196870 ref 1 fl Interpret:/0/ffffffff rc 0/-1
Apr 29 14:49:15 nbp2-oss11 kernel: [13220771.494220] LustreError: 26723:0:(service.c:2128:ptlrpc_server_handle_request()) Skipped 15128 previous similar messages
Apr 29 14:51:38 nbp2-oss11 kernel: [13220914.549113] Lustre: nbp2-OST010e: Connection restored to f69b2fd4-9b38-54c5-3208-db9c7f846e17 (at 10.151.2.31@o2ib)
Apr 29 14:51:38 nbp2-oss11 kernel: [13220914.549118] Lustre: Skipped 13576 previous similar messages
Apr 29 14:52:41 nbp2-oss11 kernel: [13220977.944989] Lustre: nbp2-OST006e: Client 46ab1987-e3e4-99f0-7564-ed9662109994 (at 10.149.16.61@o2ib313) reconnecting
Apr 29 14:52:41 nbp2-oss11 kernel: [13220977.977308] Lustre: Skipped 205 previous similar messages
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.133316] LustreError: 18054:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after 0+0s  req@ffff91a4d33dc850 x1664344159308096/t0(0) o4->4adb3af8-dc82-8ffb-8736-61b354e478c4@10.149.6.251@o2ib313:307/0 lens 488/448 e 1 to 0 dl 1588197167 ref 1 fl Interpret:/2/0 rc 0/0
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.134944] Lustre: nbp2-OST0046: Bulk IO write error with 4adb3af8-dc82-8ffb-8736-61b354e478c4 (at 10.149.6.251@o2ib313), client will retry: rc = -110
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.134946] Lustre: Skipped 110 previous similar messages
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.267840] LustreError: 18054:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 132 previous similar messages
Apr 29 14:52:47 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.6.251@o2ib313:307/0 lens 488/448 e 1 to 0 dl 1588197167 ref 1 fl Interpret
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.654382] LustreError: 18054:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after 0+0s  req@ffff919b2904f050 x1664344191291856/t0(0) o4->e4aed8fe-bccd-ec15-769f-6b0e9cc30004@10.149.7.223@o2ib313:307/0 lens 488/448 e 1 to 0 dl 1588197167 ref 1 fl Interpret:/2/0 rc 0/0
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.657505] Lustre: nbp2-OST0122: Bulk IO write error with e4aed8fe-bccd-ec15-769f-6b0e9cc30004 (at 10.149.7.223@o2ib313), client will retry: rc = -110
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.657507] Lustre: Skipped 66 previous similar messages
Apr 29 14:52:47 nbp2-oss11 kernel: [13220983.788633] LustreError: 18054:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 58 previous similar messages
Apr 29 14:52:47 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.7.223@o2ib313:307/0 lens 488/448 e 1 to 0 dl 1588197167 ref 1 fl Interpret
Apr 29 14:57:13 nbp2-oss11 kernel: [13221250.041828] LustreError: 93070:0:(service.c:3336:ptlrpc_svcpt_health_check()) ost_io: unhealthy - request has been waiting 635s
Apr 29 14:58:13 nbp2-oss11 kernel: [13221309.565832] Lustre: 17380:0:(service.c:1372:ptlrpc_at_send_early_reply()) @@@ Couldn't add any time (30/30), not sending early reply
Apr 29 14:58:13 nbp2-oss11 kernel: [13221309.565832]   req@ffff919d8c688850 x1664344177163312/t0(0) o4->a3a7a9ca-a291-5357-a974-27d6aca23eb6@10.149.16.70@o2ib313:663/0 lens 488/0 e 2 to 0 dl 1588197523 ref 2 fl New:/0/ffffffff rc 0/-1
Apr 29 14:58:13 nbp2-oss11 kernel: [13221309.654554] Lustre: 17380:0:(service.c:1372:ptlrpc_at_send_early_reply()) Skipped 53492 previous similar messages
Apr 29 14:58:21 nbp2-oss11 kernel: [13221317.290723] LustreError: 18024:0:(ldlm_lib.c:3243:target_bulk_io()) @@@ timeout on bulk WRITE after 0+0s  req@ffff919d530c9850 x1664344171829184/t0(0) o4->4ee4a5be-cd77-6c61-ff43-8f84801e5802@10.149.6.196@o2ib313:641/0 lens 504/448 e 2 to 0 dl 1588197501 ref 1 fl Interpret:/0/0 rc 0/0
Apr 29 14:58:21 nbp2-oss11 kernel: [13221317.296858] Lustre: nbp2-OST00e6: Bulk IO write error with 7cb63a26-acc1-c21e-deb5-06da7541e125 (at 10.149.7.105@o2ib313), client will retry: rc = -110
Apr 29 14:58:21 nbp2-oss11 kernel: [13221317.296860] Lustre: Skipped 63 previous similar messages
Apr 29 14:58:21 nbp2-oss11 kernel: [13221317.424993] LustreError: 18024:0:(ldlm_lib.c:3243:target_bulk_io()) Skipped 50 previous similar messages
Apr 29 14:58:21 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre bulk W Error - |client 10.149.6.196@o2ib313:641/0 lens 504/448 e 2 to 0 dl 1588197501 ref 1 fl Interpret
Apr 29 14:59:28 nbp2-oss11 kernel: [13221384.262654] LNetError: 12896:0:(o2iblnd_cb.c:3335:kiblnd_check_txs_locked()) Timed out tx: active_txs, 1 seconds
Apr 29 14:59:28 nbp2-oss11 kernel: [13221384.293877] LNetError: 12896:0:(o2iblnd_cb.c:3410:kiblnd_check_conns()) Timed out RDMA with 10.151.51.188@o2ib (339): c: 31, oc: 0, rc: 32
Apr 29 14:59:28 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre rdma timeout|nid 10.151.51.188@o2ib
Apr 29 15:01:30 nbp2-oss11 kernel: [13221506.622717] Lustre: nbp2-OST00fa: Client 0ecf2450-94bc-ebc0-dd57-47522e44f80c (at 10.149.15.82@o2ib313) reconnecting
Apr 29 15:01:30 nbp2-oss11 kernel: [13221506.654991] Lustre: Skipped 6279 previous similar messages
Apr 29 15:01:39 nbp2-oss11 kernel: [13221515.678756] Lustre: nbp2-OST00d2: Connection restored to  (at 10.141.5.250@o2ib417)
Apr 29 15:01:39 nbp2-oss11 kernel: [13221515.678761] Lustre: Skipped 15038 previous similar messages
Apr 29 15:02:46 nbp2-oss11 kernel: [13221582.426999] LustreError: 14419:0:(ldlm_lockd.c:256:expired_lock_main()) ### lock callback timer expired after 762s: evicting client at 10.149.15.193@o2ib313  ns: filter-nbp2-OST00e6_UUID lock: ffff918dbfc28900/0x51a717b6c3666956 lrc: 3/0,0 mode: PW/PW res: [0xadd8f1a:0x0:0x0].0x0 rrc: 3 type: EXT [0->18446744073709551615] (req 0->18446744073709551615) flags: 0x60000480020020 nid: 10.149.15.193@o2ib313 remote: 0xc7b02ca87786dcb expref: 16 pid: 17818 timeout: 13220018 lvb_type: 0
Apr 29 15:02:46 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre eviction - server lock callback|nid 10.149.15.193@o2ib313|target nbp2-OST00e6
Apr 29 15:03:45 nbp2-oss11 kernel: [13221641.234530] Lustre: nbp2-OST010e: haven't heard from client 998a6981-bf59-9f90-8853-473782cbfa09 (at 10.151.51.188@o2ib) in 597 seconds. I think it's dead, and I am evicting it. exp ffff91932d10b400, cur 1588197825 expire 1588197675 last 1588197228
Apr 29 15:03:45 nbp2-oss11 kernel: [13221641.301156] Lustre: Skipped 5 previous similar messages
Apr 29 15:03:45 nbp2-oss11 sec[10946]: Evaluating code '5 > 1500' and setting variable '%num'
Apr 29 15:03:45 nbp2-oss11 sec[10946]: Variable '%num' set to ''
Apr 29 15:04:22 nbp2-oss11 kernel: [13221678.438319] LustreError: 14419:0:(ldlm_lockd.c:256:expired_lock_main()) ### lock callback timer expired after 761s: evicting client at 10.149.11.54@o2ib313  ns: filter-nbp2-OST00e6_UUID lock: ffff918c2388f3c0/0x51a717b6c366750a lrc: 3/0,0 mode: PW/PW res: [0xadd8fd7:0x0:0x0].0x0 rrc: 3 type: EXT [0->18446744073709551615] (req 0->18446744073709551615) flags: 0x60000480020020 nid: 10.149.11.54@o2ib313 remote: 0x82d6b40bef341db9 expref: 17 pid: 17619 timeout: 13220114 lvb_type: 0
Apr 29 15:04:22 nbp2-oss11 sec[10946]: SEC_EVENT |msg lustre eviction - server lock callback|nid 10.149.11.54@o2ib313|target nbp2-OST00e6
Apr 29 15:05:33 nbp2-oss11 kernel: [13221749.241169] Lustre: nbp2-OST00e6: haven't heard from client 998a6981-bf59-9f90-8853-473782cbfa09 (at 10.151.51.188@o2ib) in 705 seconds. I think it's dead, and I am evicting it. exp ffff9194bb54c800, cur 1588197933 expire 1588197783 last 1588197228
Apr 29 15:11:40 nbp2-oss11 kernel: [13222116.235086] Lustre: nbp2-OST015e: Connection restored to 65ec87b7-8769-2c1a-a9b0-6a06a50f62a9 (at 10.151.5.38@o2ib)
Apr 29 15:11:40 nbp2-oss11 kernel: [13222116.235091] Lustre: Skipped 4232 previous similar messages
Whamcloud Community JIRA

[LU-13526] Client eviction mitigation
