[140702.621665] Lustre: Evicted from MGS (at 192.168.123.124@tcp) after server handle changed from 0xfc2c02f3fe266c89 to 0xfc2c02f3fe26733c
[140702.900336] Lustre: lustre-MDT0000: in recovery but waiting for the first client to connect
[140703.520582] Lustre: lustre-MDT0000: Will be in recovery for at least 1:00, or until 3 clients reconnect
[140703.523277] Lustre: lustre-MDT0000: Denying connection for new client 32fa671c-9058-9e50-6bc8-7606ebe66b49(at 0@lo), waiting for 3 known clients (0 recovered, 0 in progress, and 0 evicted) to recover in -4:00
[140703.534338] LustreError: 167-0: lustre-MDT0000-lwp-MDT0001: This client was evicted by lustre-MDT0000; in progress operations using this service will fail.
[140703.537878] LustreError: 167-0: lustre-MDT0000-lwp-MDT0002: This client was evicted by lustre-MDT0000; in progress operations using this service will fail.
[140703.541355] LustreError: 167-0: lustre-MDT0000-lwp-OST0000: This client was evicted by lustre-MDT0000; in progress operations using this service will fail.
[140709.565760] LustreError: 21222:0:(lmv_obd.c:1391:lmv_statfs()) can't stat MDS #0 (lustre-MDT0000-mdc-ffff8802ffff5800), error -16
[140709.898351] LustreError: 21222:0:(lov_obd.c:831:lov_cleanup()) lustre-clilov-ffff8802ffff5800: lov tgt 0 not cleaned! deathrow=0, lovrc=1
[140710.039531] LustreError: 21222:0:(obd_mount.c:1599:lustre_fill_super()) Unable to mount (-16)
[140713.560743] Lustre: lustre-OST0000: Not available for connect from 0@lo (stopping)
[140713.563671] Lustre: lustre-OST0000: Not available for connect from 0@lo (stopping)
[140713.564344] Lustre: lustre-OST0000: Not available for connect from 0@lo (stopping)
[140717.647627] LustreError: 21462:0:(service.c:3200:ptlrpc_service_purge_all()) ASSERTION( list_empty(&svcpt->scp_rqbd_posted) ) failed:
[140717.661384] LustreError: 21462:0:(service.c:3200:ptlrpc_service_purge_all()) LBUG
[140717.663769] Pid: 21462, comm: umount 3.10.0-7.5-debug #1 SMP Sun Jun 3 13:35:38 EDT 2018
[140717.666057] Call Trace:
[140717.667293] [<ffffffffa01c47dc>] libcfs_call_trace+0x8c/0xc0 [libcfs]
[140717.668701] [<ffffffffa01c488c>] lbug_with_loc+0x4c/0xa0 [libcfs]
[140717.670037] [<ffffffffa0b534dd>] ptlrpc_unregister_service+0xced/0xd90 [ptlrpc]
[140717.673069] [<ffffffffa005e122>] ost_cleanup+0x82/0x1b0 [ost]
[140717.674430] [<ffffffffa08e0bfa>] class_free_dev+0x1ca/0x630 [obdclass]
[140717.675653] [<ffffffffa08e1240>] class_export_put+0x1e0/0x2b0 [obdclass]
[140717.676538] [<ffffffffa08e2cc5>] class_unlink_export+0x135/0x170 [obdclass]
[140717.677432] [<ffffffffa08f8030>] class_decref+0x80/0x160 [obdclass]
[140717.678431] [<ffffffffa08f8481>] class_detach+0x1b1/0x2e0 [obdclass]
[140717.681257] [<ffffffffa08fef21>] class_process_config+0x1a91/0x2820 [obdclass]
[140717.683267] [<ffffffffa08ffe90>] class_manual_cleanup+0x1e0/0x6d0 [obdclass]
[140717.685228] [<ffffffffa092a115>] server_stop_servers+0xd5/0x160 [obdclass]
[140717.686384] [<ffffffffa092f6c6>] server_put_super+0x126/0xca0 [obdclass]
[140717.687393] [<ffffffff8121068a>] generic_shutdown_super+0x6a/0xf0
[140717.688273] [<ffffffff81210a62>] kill_anon_super+0x12/0x20
[140717.689102] [<ffffffffa09027e2>] lustre_kill_super+0x32/0x50 [obdclass]
[140717.689994] [<ffffffff81210e59>] deactivate_locked_super+0x49/0x60
[140717.691242] [<ffffffff812115a6>] deactivate_super+0x46/0x60
[140717.692270] [<ffffffff8123019f>] cleanup_mnt+0x3f/0x80
[140717.693491] [<ffffffff81230232>] __cleanup_mnt+0x12/0x20
[140717.694669] [<ffffffff810ab085>] task_work_run+0xb5/0xf0
[140717.695813] [<ffffffff8102ac12>] do_notify_resume+0x92/0xb0
[140717.697035] [<ffffffff81783c83>] int_signal+0x12/0x17
[140717.697939] [<ffffffffffffffff>] 0xffffffffffffffff
[140717.699135] Kernel panic - not syncing: LBUG