Hi all,
Our Lustre 2.1.5 client rebooted itself and kernel dump was generated in
/var/crash.
The backtrace output shows ldlm function which is Lustre-related. Any idea?
Thanks very much.
# crash /usr/lib/debug/lib/modules/2.6.32-279.19.1.el6_lustre.x86_64/vmlinux
vmcore
KERNEL:
/usr/lib/debug/lib/modules/2.6.32-279.19.1.el6_lustre.x86_64/vmlinux
DUMPFILE: vmcore-lustre-client-2013-07-26-14:04:43 [PARTIAL DUMP]
CPUS: 16
DATE: Fri Jul 26 14:03:36 2013
UPTIME: 01:56:27
LOAD AVERAGE: 0.25, 0.30, 0.18
TASKS: 840
NODENAME: lustre-client
RELEASE: 2.6.32-279.19.1.el6_lustre.x86_64
VERSION: #1 SMP Wed Mar 20 16:37:18 PDT 2013
MACHINE: x86_64 (2600 Mhz)
MEMORY: 64 GB
PANIC: "Oops: 0002 [#1] SMP " (check log for details)
PID: 3200
COMMAND: "ldlm_cb_01"
TASK: ffff881062dfd500 [THREAD_INFO: ffff880f250c2000]
CPU: 0
STATE: TASK_RUNNING (PANIC)
crash> bt
PID: 3200 TASK: ffff881062dfd500 CPU: 0 COMMAND: "ldlm_cb_01"
#0 [ffff880f250c3900] machine_kexec at ffffffff81031f7b
#1 [ffff880f250c3960] crash_kexec at ffffffff810b8c22
#2 [ffff880f250c3a30] oops_end at ffffffff814ed980
#3 [ffff880f250c3a60] no_context at ffffffff81042a0b
#4 [ffff880f250c3ab0] __bad_area_nosemaphore at ffffffff81042c95
#5 [ffff880f250c3b00] bad_area_nosemaphore at ffffffff81042d63
#6 [ffff880f250c3b10] __do_page_fault at ffffffff810434c1
#7 [ffff880f250c3c30] do_page_fault at ffffffff814ef95e
#8 [ffff880f250c3c60] page_fault at ffffffff814ecd15
[exception RIP: _spin_lock+14]
RIP: ffffffff814ec7fe RSP: ffff880f250c3d10 RFLAGS: 00010206
RAX: 0000000000010000 RBX: ffff880e437d66c0 RCX: ffff880e2c963370
RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff880f250c3d10 R8: 0000000000000000 R9: 5a5a5a5a5a5a5a5a
R10: 5a5a5a5a5a5a5a5a R11: 0000000000000000 R12: ffff880e2c963370
R13: ffff880e437d66c0 R14: ffff880f61b24688 R15: ffff88086659ce00
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#9 [ffff880f250c3d18] lock_res_and_lock at ffffffffa0841060 [ptlrpc]
#10 [ffff880f250c3d38] ldlm_callback_handler at ffffffffa0869e2e [ptlrpc]
#11 [ffff880f250c3dc8] ptlrpc_main at ffffffffa089bbae [ptlrpc]
#12 [ffff880f250c3f48] kernel_thread at ffffffff8100c0ca_______________________________________________
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