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Bug
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Resolution: Fixed
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Minor
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Lustre 2.12.0
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None
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3
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9223372036854775807
In ll_lookup_it(IT_OPEN) is called by PCC, it always allocates FID on MDT0 for this new file, but if parent directory is striped or is remote, it will cause this create RPC sent to the MDT where its name hash points to, but not where its FID belongs to, and finally it will trigger assertion in osp_md_create:
[22573.885685] LustreError: 29626:0:(osp_md_object.c:167:osp_md_create()) ASSERTION( attr->la_valid & LA_TYPE ) failed: [22573.886840] LustreError: 29626:0:(osp_md_object.c:167:osp_md_create()) LBUG [22573.887513] Pid: 29626, comm: mdt00_000 3.10.0-1127.8.2.el7_lustre.x86_64 #1 SMP Wed Jul 22 17:22:45 UTC 2020 [22573.888637] Call Trace: [22573.889029] [] libcfs_call_trace+0x8c/0xc0 [libcfs] [22573.890130] [] lbug_with_loc+0x4c/0xa0 [libcfs] [22573.891078] [] osp_md_create+0x442/0x490 [osp] [22573.892202] [] lod_sub_create+0x1f5/0x480 [lod] [22573.893094] [] lod_create+0x54/0x2d0 [lod] [22573.893698] [] mdd_create_object_internal+0xae/0x2f0 [mdd] [22573.894630] [] mdd_create_object+0x83/0x940 [mdd] [22573.895450] [] mdd_create+0xf3f/0x1690 [mdd] [22573.896197] [] mdt_reint_open+0x2413/0x3270 [mdt] [22573.897188] [] mdt_reint_rec+0x83/0x210 [mdt] [22573.897812] [] mdt_reint_internal+0x720/0xaf0 [mdt] [22573.898654] [] mdt_intent_open+0x82/0x3a0 [mdt] [22573.899522] [] mdt_intent_opc+0x1ba/0xb40 [mdt] [22573.900292] [] mdt_intent_policy+0x1a4/0x360 [mdt] [22573.901200] [] ldlm_lock_enqueue+0x3cb/0xad0 [ptlrpc] [22573.902216] [] ldlm_handle_enqueue0+0xa56/0x1610 [ptlrpc] [22573.903120] [] tgt_enqueue+0x62/0x210 [ptlrpc] [22573.903966] [] tgt_request_handle+0x96a/0x1640 [ptlrpc] [22573.904718] [] ptlrpc_server_handle_request+0x256/0xb10 [ptlrpc] [22573.905691] [] ptlrpc_main+0xb3c/0x14d0 [ptlrpc] [22573.906627] [] kthread+0xd1/0xe0 [22573.907307] [] ret_from_fork_nospec_end+0x0/0x39 [22573.908266] [] 0xffffffffffffffff [22573.908991] Kernel panic - not syncing: LBUG
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- Resolved
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