[LU-6616] recovery-small test_27: (mgs_handler.c:1379:mgs_fsc_debug()) ASSERTION( list_empty(&fsdb->fsdb_clients) ) failed

• Type: Bug
• Resolution: Won't Fix
• Priority: Minor
• Labels: zfs
• Severity: 3
• Assignee: WC Triage
• Reporter: Maloo

Description

This issue was created by maloo for sarah_lw <[e-mail]>

This issue relates to the following test suite run: https://testing.hpdd.intel.com/test_sets/32d97c9c-fa45-11e4-8c8b-5254006e85c2.

The sub-test test_27 failed with the following error:

test failed to respond and timed out

MDS console:

08:12:16:Lustre: DEBUG MARKER: == recovery-small test 27: fail LOV while using OSC's == 21:44:09 (1431578649)
08:12:16:Lustre: DEBUG MARKER: grep -c /mnt/mds1' ' /proc/mounts
08:12:16:Lustre: DEBUG MARKER: umount -d /mnt/mds1
08:12:16:Lustre: Failing over lustre-MDT0000
08:12:16:LustreError: 12100:0:(mgs_handler.c:1379:mgs_fsc_debug()) ASSERTION( list_empty(&fsdb->fsdb_clients) ) failed: Find FSC after cleanup, FSDB lustre
08:12:16:LustreError: 12100:0:(mgs_handler.c:1379:mgs_fsc_debug()) LBUG
08:12:17:Pid: 12100, comm: umount
08:12:18:
08:12:18:Call Trace:
08:12:18: [<ffffffffa0704875>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
08:12:18: [<ffffffffa0704e77>] lbug_with_loc+0x47/0xb0 [libcfs]
08:12:19: [<ffffffffa0e7c523>] mgs_fsc_debug+0x93/0xa0 [mgs]
08:12:19: [<ffffffffa0e7f6b5>] mgs_device_fini+0x115/0x5b0 [mgs]
08:12:19: [<ffffffffa083d582>] class_cleanup+0x552/0xd10 [obdclass]
08:12:19: [<ffffffffa081dbc6>] ? class_name2dev+0x56/0xe0 [obdclass]
08:12:19: [<ffffffffa083fd2a>] class_process_config+0x1fea/0x27c0 [obdclass]
08:12:19: [<ffffffffa0710c31>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
08:12:19: [<ffffffffa0838ce5>] ? lustre_cfg_new+0x435/0x630 [obdclass]
08:12:20: [<ffffffffa0840621>] class_manual_cleanup+0x121/0x870 [obdclass]
08:12:20: [<ffffffffa081dbc6>] ? class_name2dev+0x56/0xe0 [obdclass]
08:12:20: [<ffffffffa087b774>] server_put_super+0xc44/0xea0 [obdclass]
08:12:20: [<ffffffff81190adb>] generic_shutdown_super+0x5b/0xe0
08:12:20: [<ffffffff81190bc6>] kill_anon_super+0x16/0x60
08:12:20: [<ffffffffa0842876>] lustre_kill_super+0x36/0x60 [obdclass]
08:12:21: [<ffffffff81191367>] deactivate_super+0x57/0x80
08:12:22: [<ffffffff811b0fbf>] mntput_no_expire+0xbf/0x110
08:12:23: [<ffffffff811b1b0b>] sys_umount+0x7b/0x3a0
08:12:23: [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b
08:12:23:
08:12:23:Kernel panic - not syncing: LBUG
08:12:23:Pid: 12100, comm: umount Tainted: P           ---------------    2.6.32-504.16.2.el6_lustre.gd805a88.x86_64 #1
08:12:24:Call Trace:
08:12:24: [<ffffffff81529fbc>] ? panic+0xa7/0x16f
08:12:25: [<ffffffffa0704ecb>] ? lbug_with_loc+0x9b/0xb0 [libcfs]
08:12:25: [<ffffffffa0e7c523>] ? mgs_fsc_debug+0x93/0xa0 [mgs]
08:12:25: [<ffffffffa0e7f6b5>] ? mgs_device_fini+0x115/0x5b0 [mgs]
08:12:25: [<ffffffffa083d582>] ? class_cleanup+0x552/0xd10 [obdclass]
08:12:25: [<ffffffffa081dbc6>] ? class_name2dev+0x56/0xe0 [obdclass]
08:12:25: [<ffffffffa083fd2a>] ? class_process_config+0x1fea/0x27c0 [obdclass]
08:12:25: [<ffffffffa0710c31>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
08:12:26: [<ffffffffa0838ce5>] ? lustre_cfg_new+0x435/0x630 [obdclass]
08:12:26: [<ffffffffa0840621>] ? class_manual_cleanup+0x121/0x870 [obdclass]
08:12:27: [<ffffffffa081dbc6>] ? class_name2dev+0x56/0xe0 [obdclass]
08:12:27: [<ffffffffa087b774>] ? server_put_super+0xc44/0xea0 [obdclass]
08:12:27: [<ffffffff81190adb>] ? generic_shutdown_super+0x5b/0xe0
08:12:28: [<ffffffff81190bc6>] ? kill_anon_super+0x16/0x60
08:12:28: [<ffffffffa0842876>] ? lustre_kill_super+0x36/0x60 [obdclass]
08:12:28: [<ffffffff81191367>] ? deactivate_super+0x57/0x80
08:12:28: [<ffffffff811b0fbf>] ? mntput_no_expire+0xbf/0x110
08:12:29: [<ffffffff811b1b0b>] ? sys_umount+0x7b/0x3a0
08:12:29: [<ffffffff8100b072>] ? system_call_fastpath+0x16/0x1b
08:12:29:Initializing cgroup subsys cpuset
08:12:30:Initializing cgroup subsys cpu

Issue Links

• is related to: LU-4772 MGS is waiting for obd_unlinked_exports