[LU-2279] replay-single test 88 LustreError: 10305:0:(osp_precreate.c:694:osp_precreate_reserve()) LBUG

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Labels: MB sequoia
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Oleg Drokin

Description

Running replay-single, I hit this LBUG:

[50576.766529] Lustre: DEBUG MARKER: == replay-single test 88: MDS should not assign same objid to different files == 01:10:48 (1352095848)
[50576.964168] Turning device loop1 (0x700001) read-only
[50576.985608] Lustre: DEBUG MARKER: ost1 REPLAY BARRIER on lustre-OST0000
[50576.989899] Lustre: DEBUG MARKER: local REPLAY BARRIER on lustre-OST0000
[50577.290548] Turning device loop0 (0x700000) read-only
[50577.316807] Lustre: DEBUG MARKER: mds1 REPLAY BARRIER on lustre-MDT0000
[50577.323211] Lustre: DEBUG MARKER: local REPLAY BARRIER on lustre-MDT0000
[50577.541027] Lustre: lustre-OST0000-osc-MDT0000: slow creates, last=8104, next=8104, reserved=0, syn_changes=0, syn_rpc_in_progress=0, status=-19
[50577.541472] LustreError: 10305:0:(osp_precreate.c:694:osp_precreate_reserve()) LBUG
[50577.541985] Pid: 10305, comm: mdt00_000
[50577.542331] 
[50577.542332] Call Trace:
[50577.542866]  [<ffffffffa0455915>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[50577.543256]  [<ffffffffa0455f27>] lbug_with_loc+0x47/0xb0 [libcfs]
[50577.543618]  [<ffffffffa0e4473c>] osp_precreate_reserve+0x50c/0x600 [osp]
[50577.544000]  [<ffffffffa0e3d7a0>] ? osp_object_alloc+0x120/0x290 [osp]
[50577.544368]  [<ffffffffa0e43533>] osp_declare_object_create+0x163/0x540 [osp]
[50577.544785]  [<ffffffffa07384bd>] lod_qos_declare_object_on+0xed/0x4c0 [lod]
[50577.545173]  [<ffffffffa073b65b>] lod_qos_prep_create+0x92b/0x1848 [lod]
[50577.545549]  [<ffffffffa073686b>] lod_declare_striped_object+0x14b/0x920 [lod]
[50577.546558]  [<ffffffffa0737348>] lod_declare_object_create+0x308/0x4f0 [lod]
[50577.546905]  [<ffffffffa0cf1c4f>] mdd_declare_object_create_internal+0xaf/0x1d0 [mdd]
[50577.547452]  [<ffffffffa0d02aca>] mdd_create+0x39a/0x1550 [mdd]
[50577.547770]  [<ffffffffa0de9d28>] mdt_reint_open+0x1078/0x1870 [mdt]
[50577.548094]  [<ffffffffa0d08b0e>] ? md_ucred+0x1e/0x60 [mdd]
[50577.548403]  [<ffffffffa0db5655>] ? mdt_ucred+0x15/0x20 [mdt]
[50577.548718]  [<ffffffffa0dd4c81>] mdt_reint_rec+0x41/0xe0 [mdt]
[50577.549059]  [<ffffffffa0dce413>] mdt_reint_internal+0x4e3/0x7e0 [mdt]
[50577.549395]  [<ffffffffa0dce9dd>] mdt_intent_reint+0x1ed/0x500 [mdt]
[50577.549715]  [<ffffffffa0dca3ae>] mdt_intent_policy+0x38e/0x770 [mdt]
[50577.550077]  [<ffffffffa0783dda>] ldlm_lock_enqueue+0x2ea/0x890 [ptlrpc]
[50577.550424]  [<ffffffffa07ab187>] ldlm_handle_enqueue0+0x4e7/0x1010 [ptlrpc]
[50577.550761]  [<ffffffffa0dca8e6>] mdt_enqueue+0x46/0x130 [mdt]
[50577.551076]  [<ffffffffa0dbe1f2>] mdt_handle_common+0x932/0x1740 [mdt]
[50577.551425]  [<ffffffffa0dbf0d5>] mdt_regular_handle+0x15/0x20 [mdt]
[50577.551797]  [<ffffffffa07d9573>] ptlrpc_server_handle_request+0x463/0xe70 [ptlrpc]
[50577.552413]  [<ffffffffa045666e>] ? cfs_timer_arm+0xe/0x10 [libcfs]
[50577.552697]  [<ffffffffa07d2241>] ? ptlrpc_wait_event+0xb1/0x2a0 [ptlrpc]
[50577.552950]  [<ffffffff81051f73>] ? __wake_up+0x53/0x70
[50577.553303]  [<ffffffffa07dc10a>] ptlrpc_main+0xb9a/0x1960 [ptlrpc]
[50577.553709]  [<ffffffffa07db570>] ? ptlrpc_main+0x0/0x1960 [ptlrpc]
[50577.553927]  [<ffffffff8100c14a>] child_rip+0xa/0x20
[50577.554222]  [<ffffffffa07db570>] ? ptlrpc_main+0x0/0x1960 [ptlrpc]
[50577.554605]  [<ffffffffa07db570>] ? ptlrpc_main+0x0/0x1960 [ptlrpc]
[50577.554960]  [<ffffffff8100c140>] ? child_rip+0x0/0x20
[50577.555289] 
[50577.560016] Kernel panic - not syncing: LBUG

crashdump and modules are at /exports/crashdumps/192.168.10.210-2012-11-05-01\:10\:50