Hi Few more questions: - do you write to the snapshots? - do you create/delete snapshots while the crash happens? - do all the snapshots have the same chunk size? - how many snapshots do you have? Mikulas > Hi > > With the two patches of yesterday, the latest debug infomation is as follow: > > [ 197.073630] ------------[ cut here ]------------ > [ 197.073633] kernel BUG at drivers/md/dm-snap.c:405! > [ 197.073635] invalid opcode: 0000 [#1] SMP > [ 197.073637] last sysfs file: /sys/devices/virtual/block/dm-6/dev > [ 197.073639] Modules linked in: iscsi_trgt arcmsr bonding e1000 > [ 197.073642] > [ 197.073645] Pid: 4268, comm: kcopyd Not tainted (2.6.28.2-dm #8) S5000PSL > [ 197.073647] EIP: 0060:[<c03c5da8>] EFLAGS: 00010246 CPU: 2 > [ 197.073653] EIP is at free_pending_exception+0x88/0x90 > [ 197.073654] EAX: c05a0ce8 EBX: f55449f0 ECX: 00000282 EDX: ef3056d0 > [ 197.073656] ESI: f6c65bc0 EDI: 00000000 EBP: ef2a34e0 ESP: ef3d5ecc > [ 197.073657] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > [ 197.073659] Process kcopyd (pid: 4268, ti=ef3d4000 task=f6d77bc0 task.ti=ef3d4000) > [ 197.073660] Stack: > [ 197.073661] f55449f0 00000000 c03c6918 f75fbf70 ef2843c8 f75fbec0 00000000 ef2409c0 > [ 197.073665] 00000001 00000001 ef2a34e0 c03c82ca c03c6a20 002689a4 00000000 000030d8 > [ 197.073668] 00000000 f75fbf2c ef2a34e0 f75fbec0 eeded3c0 c03c69e2 ef2a34e0 eeded418 > [ 197.073672] Call Trace: > [ 197.073674] [<c03c6918>] pending_complete+0x2d8/0x360 > [ 197.073677] [<c03c82ca>] persistent_commit+0x34a/0x380 > [ 197.073679] [<c03c6a20>] commit_callback+0x0/0x40 > [ 197.073681] [<c03c69e2>] copy_callback+0x42/0x80 > [ 197.073683] [<c03c69a0>] copy_callback+0x0/0x80 > [ 197.073686] [<c03c1858>] run_complete_job+0x108/0x140 > [ 197.073688] [<c03c119c>] process_jobs+0x4c/0xe0 > [ 197.073690] [<c03c1750>] run_complete_job+0x0/0x140 > [ 197.073692] [<c03c1230>] do_work+0x0/0x50 > [ 197.073694] [<c03c124e>] do_work+0x1e/0x50 > [ 197.073696] [<c012ef32>] run_workqueue+0x72/0x100 > [ 197.073700] [<c0132570>] prepare_to_wait+0x20/0x60 > [ 197.073703] [<c012f840>] worker_thread+0x0/0xb0 > [ 197.073705] [<c012f8b9>] worker_thread+0x79/0xb0 > [ 197.073707] [<c01323d0>] autoremove_wake_function+0x0/0x50 > [ 197.073710] [<c012f840>] worker_thread+0x0/0xb0 > [ 197.073712] [<c01320d2>] kthread+0x42/0x70 > [ 197.073713] [<c0132090>] kthread+0x0/0x70 > [ 197.073715] [<c0103eff>] kernel_thread_helper+0x7/0x18 > [ 197.073718] Code: 04 89 42 04 89 10 c7 41 04 00 02 20 00 c7 43 40 00 01 10 00 fe 05 94 41 65 c0 8b 56 48 89 d8 e8 3f 30 d8 ff f0 ff 4e 4c 5b 5e c3 <0f> 0b eb fe 8d 74 26 00 55 89 c5 57 56 53 83 ec 0c 8b 75 30 8b > [ 197.073737] EIP: [<c03c5da8>] free_pending_exception+0x88/0x90 SS:ESP 0068:ef3d5ecc > [ 197.073754] ---[ end trace beb1c34d6186bec5 ]--- > > Jacky Kim > . -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
