[LU-17448] LBUG in racer with layout change

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Affects Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Andreas Dilger

Description

Hit a crash with a new racer rename test in v4 of patch https://review.whamcloud.com/47643 "LU-15913 tests: add rename stress test via racer" that was still using complex file layouts (I've removed most complex layouts in v5 to focus on actual rename testing for LU-17426). It looks like an ldiskfs credits issue with the large file layout (note xattr_set: 2/103/0), as I don't see any crashes with ZFS.
https://testing.whamcloud.com/gerrit-janitor/38859/results.html

Lustre: lod_parse_striping()) lustre-MDT0000-mdtlov: EXTENSION flags=40 set on component[2]=1 of non-SEL file [0x200000402:0x2402:0x0] with magic=0xbd60bd0
[few seconds pass, but included to show SEL is definitely in use]
Lustre: osd_trans_exec_check()) lustre-MDT0000: opcode 7: used 14, used now 2, reserved 12
Lustre: osd_trans_dump_creds())   create: 0/0/0, destroy: 0/0/0
Lustre: osd_trans_dump_creds())   attr_set: 1/1/0, xattr_set: 2/103/0
Lustre: osd_trans_dump_creds())   write: 3/12/14, punch: 0/0/0, quota 1/3/2
Lustre: osd_trans_dump_creds())   insert: 0/0/0, delete: 0/0/0
Lustre: osd_trans_dump_creds())   ref_add: 0/0/0, ref_del: 0/0/0
LustreError: osd_trans_exec_check()) LBUG
Pid: 14124, comm: mdt00_019 3.10.0-7.9-debug #1 SMP Sat Mar 26 23:28:42 EDT 2022
Call Trace:
 libcfs_call_trace+0x90/0xf0 [libcfs]
 lbug_with_loc+0x4c/0xa0 [libcfs]
 osd_write+0x929/0xcc0 [osd_ldiskfs]
 dt_record_write+0x33/0x130 [obdclass]
 llog_osd_write_rec+0xfdb/0x1c80 [obdclass]
 llog_write_rec+0x290/0x590 [obdclass]
 llog_cat_add_rec+0x1d9/0xa50 [obdclass]
 llog_add+0x17f/0x1f0 [obdclass]
 osp_sync_add+0x1f9/0x760 [osp]
 osp_attr_set+0x3cd/0x680 [osp]
 lod_sub_attr_set+0x1d7/0x500 [lod]
 lod_obj_stripe_attr_set_cb+0x40/0x100 [lod]
 lod_obj_for_each_stripe+0x12d/0x310 [lod]
 lod_attr_set+0x51a/0xb60 [lod]
 lod_layout_change+0x367/0x3f0 [lod]
 dt_layout_change+0x20/0xc0 [mdd]
 mdd_layout_change+0x1712/0x1db0 [mdd]
 mdt_layout_change+0x2bf/0x450 [mdt]
 mdt_intent_layout+0x910/0xeb0 [mdt]
 mdt_intent_opc+0x1c8/0xc50 [mdt]
 mdt_intent_policy+0xfa/0x460 [mdt]
 ldlm_lock_enqueue+0x3b1/0xbb0 [ptlrpc]
 ldlm_handle_enqueue+0x359/0x17c0 [ptlrpc]
 tgt_enqueue+0x68/0x240 [ptlrpc]
 tgt_request_handle+0x74e/0x19d0 [ptlrpc]
 ptlrpc_server_handle_request+0x26e/0xcf0 [ptlrpc]
 ptlrpc_main+0xc37/0x16d0 [ptlrpc]

Issue Links

• is related to: LU-15913 rename stress test leads to REMOTE_PARENT_DIR corruption
• is related to: LU-17459 lod_statfs_and_check()) ASSERTION( desc->ld_active_tgt_count < desc->ld_tgt_count ) failed