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This issue was originally described in LU-1459.
When an OSC/OST is set to active for the file system a client will not be able to activate the OST
[root@test-340-5 lustre-release]# dmesg
LustreError: 19991:0:(lov_obd.c:220:lov_notify()) event(9) of test-OST0000_UUID failed: -22
[root@test-340-5 lustre-release]# lctl dk /root/lustre2.log
Debug log: 19 lines, 19 kept, 0 dropped, 0 bad.
[root@test-340-5 lustre-release]# cat /root/lustre2.log
10000000:01000000:0:1338449754.150751:0:19935:0:(mgc_request.c:595:mgc_blocking_ast()) Lock res 0x5665746953 (test)
10000000:01000000:6:1338449754.150836:0:19990:0:(mgc_request.c:281:mgc_requeue_thread()) Starting requeue thread
10000000:01000000:6:1338449757.820844:0:19990:0:(mgc_request.c:307:mgc_requeue_thread()) updating log test-client
10000000:01000000:6:1338449757.820847:0:19990:0:(mgc_request.c:1128:mgc_process_log()) Process log test-client:ffff81182eb8dc00 from 83
10000000:01000000:6:1338449757.820849:0:19990:0:(mgc_request.c:657:mgc_enqueue()) Enqueue for test-client (res 0x5665746953)
00000020:01000000:0:1338449757.822392:0:19991:0:(obd_config.c:1075:class_config_llog_handler()) Marker, inst_flg=0x0 mark_flg=0x1
00000020:00000080:0:1338449757.822397:0:19991:0:(obd_config.c:788:class_process_config()) processing cmd: cf010
00000020:00000080:0:1338449757.822399:0:19991:0:(obd_config.c:857:class_process_config()) marker 30 (0x1) test-OST0000-os osc.active
00000020:01000000:0:1338449757.822403:0:19991:0:(obd_config.c:1152:class_config_llog_handler()) cmd cf00f, instance name: test-OST0000-osc-ffff81182eb8dc00
00000020:00000080:0:1338449757.822404:0:19991:0:(obd_config.c:788:class_process_config()) processing cmd: cf00f
00000100:00080000:0:1338449757.822413:0:19991:0:(recover.c:258:ptlrpc_set_import_active()) setting import test-OST0000_UUID VALID
00000100:00080000:0:1338449757.822415:0:19991:0:(import.c:182:ptlrpc_set_import_discon()) osc: import ffff81182ad69800 already not connected (conn 0, was 0): NEW
00020000:00020000:0:1338449757.822422:0:19991:0:(lov_obd.c:220:lov_notify()) event(9) of test-OST0000_UUID failed: -22
00000020:01000000:0:1338449757.830661:0:19991:0:(obd_config.c:1017:class_process_proc_param()) test-OST0000-osc-ffff81182eb8dc00.osc: set parameter active=1
00000020:01000000:0:1338449757.830664:0:19991:0:(obd_config.c:1075:class_config_llog_handler()) Marker, inst_flg=0x2 mark_flg=0x2
00000020:00000080:0:1338449757.830666:0:19991:0:(obd_config.c:788:class_process_config()) processing cmd: cf010
00000020:00000080:0:1338449757.830668:0:19991:0:(obd_config.c:857:class_process_config()) marker 30 (0x2) test-OST0000-os osc.active
00000020:01000000:6:1338449757.830730:0:19990:0:(obd_config.c:1230:class_config_parse_llog()) Processed log test-client gen 83-85 (rc=0)
10000000:01000000:6:1338449757.830740:0:19990:0:(mgc_request.c:1196:mgc_process_log()) MGC10.10.2.80@o2ib: configuration from log 'test-client' succeeded (0).
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