[Lustre-discuss] lustre lbug

[Michael Di Domenico]

I have a scratch lustre filesystem setup running on rhel6.2 with
lustre 2.2 (whamcloud) rpms.  my meta data servers seems to be plagued
with this LBUG from time to time

any thoughts on what i should do?

[root at metal -]#
Message from syslogd at metal at Aug 109:46:26 ...
kernel: LustreError: 3218:0: (mdt_open.c:1035:mdt_reconstruct_open())
AssERTION( (!(rc < 0) I I (lustre_msg_get_transno(req->r~repmsg) ==
0)) ) failed:

Message from syslogd at metal at Aug 1 09:46:26 .,.
kernel:LustreError: 3218:0:(mdt_open.c:1035:mdt_reconstruct_open()) LBUG

Message from syslogd at metal at Aug 1 09:46:26
kernel:Kernel panic -not syncing: LBUG at o2ib:0/0 lens 192/0 e 0 to 0 dl
1343828771 ref 1 fl Interpret:H/0/ffffffff rc 0/

1 Aug 1 09:46:26 metal kernel: LustreError:
3218:0:(mdt_open.c:1035:mdt_reconstruct_open()) ASSERTION ( (!(rc < 0)
I I (lustre_msg_get_transno(req->r~repmsg) == 0)) ) failed:

Message from syslogd at metal at Aug 1 09:46:26 ...
kernel: LustreError: 3218:0:(mdt_open.c:1035:mdt_reconstruct_open())
AssERTION( (!(rc < 0) I I (lustre_msg_get_transno(req->r~repmsg) ==
0)) ) failed:

Message from syslogd at metal at Aug 1 09:46:26 ...
kernel: LustreError: 3218:0:(mdt_open.c:1035:mdt_reconstruct_open()) LBUG
Aug 1 09:46:26 metal kernel: LustreError: 3218:0:
(mdt_open.c:1035:mdt_reconstruct_open()) LBUG
Aug 1 09:46:26 metal kernel: Pid: 3218, comm: mdt_24
Aug 1 09:46:26 metal kernel:
Aug 1 09:46:26 metal kernel: Call Trace:
Aug 1 09:46:26 metal kernel: [<ffffffffa0422835>]
libcfs_debug_dumpstack+0x55/0x80 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa0422d67>]
lbug_with_loc+0x47/0xb0 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d6e60b>]
mdt_reconstruct_open+0x63b/0x8c0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d620fb>]
mdt_reconstruct+0x4b/0xb0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d511f9>]
mdt_reint_internal+0x609/0x7b0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d5l5d5>]
mdt_intent_reint+0x185/0x4a0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d5036l>]
mdt_intent_policy+0x2dl/0x600 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0668e39>]
ldlm_lock_enqueue+0x2f9/0x830 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa068gef0>]
ldlm_handle_enqueue0+0x420/0xd90 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d506d6>] mdt_enqueue+0x46/0x130 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d47b9d>]
mdt_handle_common+0x74d/0x1400 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d48925>]
mdt_regular_handle+0x15/0x20 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa06b10l1>]
ptlrpc_server_handle_request+0x3cl/0xcb0
[ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa04233ee>] ?
cfs_timer_arm+0xe/0x10 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa042de19>] ?
lc_watchdog_touch+0x79/0xl10 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa06ab0e2>] ?
ptlrpc_wait_event+0xb2/0x2c0 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffff8l0519c3>] ? __wake_up+0x53/0x70
Aug 1 09:46:26 metal kernel: [<ffffffffa06b201f>]
ptlrpc_main+0x7lf/0x12l0 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa06b1900>] ?
ptlrpc_main+0x0/0x12l0 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffff8100c14a>] child_rip+0xa/0x20
Aug 1 09:46:26 metal kernel: [<ffffffffa06b1900>] ?
ptlrpc_main+0x0/0x1210 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa06b1900>] ?
ptlrpc_main+0x0/0x1210 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20
Aug 1 09:46:26 metal kernel:
Aug 1 09:46:26 metal kernel: Kernel panic not syncing: LBUG

Message from syslogd at meta1 at Aug 109:46:26 ...
kernel:Kernel panic -not syncing: LBUG
Aug 1 09:46:26 metal kernel: Pid: 3218, comm: mdt_24 Not tainted
2.6.32-220.4.2.e16.x86_64 #1
Aug 1 09:46:26 metal kernel: Call Trace:
Aug 1 09:46:26 metal kernel: [<ffffffff814ec61a>] ? panic+0x78/0x143
Aug 1 09:46:26 metal kernel: [<ffffffffa0422dbb>] ?
lbug_with_loc+0x9b/0xb0 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d6e60b>] ?
mdt_reconstruct_open+0x63b/0x8c0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d620fb>] ?
mdt_reconstruct+0x4b/0xb0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0dS1lf9>] ?
mdt_reint_internal+0x609/0x7b0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0dSlSdS>] ?
mdt_intent_reint+0x18S/0x4a0 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d5036l>] ?
mdt_intent~olicy+0x2d1/0x600 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0668e39>] ?
ldlm_lock_enqueue+0x2f9/0x830 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa068gef0>] ?
ldlm_handle_enqueue0+0x420/0xd90 [ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa0dS06d6>] ?
mdt_enqueue+0x46/0x130 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d47b9d>] ?
mdt_handle_common+0x74d/0x1400 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa0d48925>] ?
mdt_regular_handle+0xlS/0x20 [mdt]
Aug 1 09:46:26 metal kernel: [<ffffffffa06b10ll>] ?
ptlrpc_server_handle_request+0x3c1/0xcb0
[ptlrpc]
Aug 1 09:46:26 metal kernel: [<ffffffffa04233ee>] ?
cfs_timer_arm+0xe/0x10 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa042del9>] ?
lc_watchdog_touch+0x79/0xl10 [libcfs]
Aug 1 09:46:26 metal kernel: [<ffffffffa06ab0e2>] ?
ptlrpc_wait_event+0xb2/0x2c0 [ptlrpc]