[LU-6837] MDS panic during 24 hours failover test.

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

6>LDISKFS-fs (sde1): mounted filesystem with ordered data mode. quota=on. Opts:
<6>Lustre: lustre-MDT0002: Imperative Recovery enabled, recovery window shrunk from 300-900 down to 150-450
<4>LNet: 8453:0:(debug.c:219:libcfs_debug_str2mask()) You are trying to use a numerical value for the mask - this will be deprecated in a future release.
<4>general protection fault: 0000 [#1] SMP
<4>last sysfs file: /sys/devices/system/cpu/online
<4>CPU 5
<4>Modules linked in: osp(U) mdd(U) lod(U) mdt(U) lfsck(U) mgc(U) osd_ldiskfs(U) lquota(U) lustre(U) lov(U) mdc(U) fid(U) lmv(U) fld(U) ko2iblnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic sha256_generic crc32c_intel libcfs(U) ldiskfs(U) jbd2 nfsd exportfs nfs lockd fscache auth_rpcgss nfs_acl sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 iTCO_wdt iTCO_vendor_support microcode serio_raw mlx4_ib ib_sa ib_mad ib_core mlx4_en mlx4_core i2c_i801 lpc_ich mfd_core ioatdma i7core_edac edac_core ses enclosure sg igb dca i2c_algo_bit i2c_core ptp pps_core ext3 jbd mbcache sr_mod cdrom sd_mod crc_t10dif pata_acpi ata_generic ata_piix mpt2sas scsi_transport_sas raid_class dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
<4>
<4>Pid: 8345, comm: lod0002_rec0006 Not tainted 2.6.32-431.29.2.el6_lustre.g2382eb0.x86_64 #1 Supermicro X8DTH-i/6/iF/6F/X8DTH
<4>RIP: 0010:[<ffffffffa0905ee1>]  [<ffffffffa0905ee1>] insert_update_records_to_replay_list+0x1b1/0x1540 [ptlrpc]
<4>RSP: 0018:ffff880821697a60  EFLAGS: 00010296
<4>RAX: 5a5a5a5a5a5a5a5a RBX: 0000000000000006 RCX: 0000000000000000
<4>RDX: 0000000000005a5a RSI: 0000000000000000 RDI: 5a5a5a5a5a5a5a42
<4>RBP: ffff880821697ac0 R08: 0000000000000002 R09: ffff881008f5a000
<4>R10: 0000000000000001 R11: 0000000000000000 R12: ffff88100006a820
<4>R13: ffff88100006a830 R14: ffff88100006a800 R15: ffff8807fb377df8
<4>FS:  0000000000000000(0000) GS:ffff88085c420000(0000) knlGS:0000000000000000
<4>CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
<4>CR2: 000000000044fc20 CR3: 0000000001a85000 CR4: 00000000000007e0
<4>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>Process lod0002_rec0006 (pid: 8345, threadinfo ffff880821696000, task ffff880831268040)
<4>Stack:
<4> ffff880821697ac0 ffffffffa0512c01 0000000000000010 ffff880821697ad0
<4><d> ffff880fff438c88 ffff880ff8600ad8 00000a8900001118 ffff880fff438c78
<4><d> ffff880ff8600800 ffff8807f9a95c60 ffff880ff6e5ba80 ffff880fff438c78
<4>Call Trace:
<4> [<ffffffffa0512c01>] ? libcfs_debug_msg+0x41/0x50 [libcfs]
<4> [<ffffffffa0fc8739>] lod_process_recovery_updates+0x1e9/0x420 [lod]
<4> [<ffffffffa060a41a>] llog_process_thread+0x94a/0xfc0 [obdclass]
<4> [<ffffffffa060ab4d>] llog_process_or_fork+0xbd/0x5d0 [obdclass]
<4> [<ffffffffa0fc8550>] ? lod_process_recovery_updates+0x0/0x420 [lod]
<4> [<ffffffffa060d938>] llog_cat_process_cb+0x458/0x600 [obdclass]
<4> [<ffffffffa060a41a>] llog_process_thread+0x94a/0xfc0 [obdclass]
<4> [<ffffffffa060ab4d>] llog_process_or_fork+0xbd/0x5d0 [obdclass]
<4> [<ffffffffa060d4e0>] ? llog_cat_process_cb+0x0/0x600 [obdclass]
<4> [<ffffffffa060c39d>] llog_cat_process_or_fork+0x1ad/0x300 [obdclass]
<4> [<ffffffffa0ff2fa0>] ? lod_sub_prep_llog+0x4f0/0x7b0 [lod]
<4> [<ffffffffa0fc8550>] ? lod_process_recovery_updates+0x0/0x420 [lod]
<4> [<ffffffffa060c509>] llog_cat_process+0x19/0x20 [obdclass]
<4> [<ffffffffa0fc7cfa>] lod_sub_recovery_thread+0x69a/0xbc0 [lod]
<4> [<ffffffffa0fc7660>] ? lod_sub_recovery_thread+0x0/0xbc0 [lod]
<4> [<ffffffff8109abf6>] kthread+0x96/0xa0
<4> [<ffffffff8100c20a>] child_rip+0xa/0x20
<4> [<ffffffff8109ab60>] ? kthread+0x0/0xa0
<4> [<ffffffff8100c200>] ? child_rip+0x0/0x20
<4>Code: 8b 46 20 49 39 c4 48 8d 78 e8 75 1f e9 91 01 00 00 66 0f 1f 84 00 00 00 00 00 48 8b 47 18 49 39 c4 48 8d 78 e8 0f 84 77 01 00 00 <3b> 58 e8 75 ea 4c 89 e8 66 ff 00 66 66 90 48 85 ff 0f 84 38 02
<1>RIP  [<ffffffffa0905ee1>] insert_update_records_to_replay_list+0x1b1/0x1540 [ptlrpc]
<4> RSP <ffff880821697a60>

Issue Links

• is blocking: LU-6773 DNE2 Failover and recovery soak testing
• is related to: LU-6831 The ticket for tracking all DNE2 bugs