[LU-16794] Assertion index already set in llog bitmap

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Fix Version/s: Lustre 2.17.0
• Affects Version/s: Lustre 2.16.0
• Assignee: WC Triage
• Reporter: Oleg Drokin

Description

This is a relatively low frequency crash that had several attempt to be fixed in other tickets but seems to still persist. I see in boilpot a few times a year and maloo also saw it at least once (reported in LU-15444):

LustreError: 955:0:(llog_osd.c:624:llog_osd_write_rec()) lustre-MDT0001-osp-MDT0000: index 2790 already set in llog bitmap [0x240000402:0x4:0x0]
LustreError: 955:0:(llog_osd.c:626:llog_osd_write_rec()) LBUG
Pid: 955, comm: mdt00_011 3.10.0-7.9-debug #2 SMP Tue Feb 1 18:17:58 EST 2022
Call Trace:
[<0>] libcfs_call_trace+0x90/0xf0 [libcfs]
[<0>] lbug_with_loc+0x4c/0xa0 [libcfs]
[<0>] llog_osd_write_rec+0x172c/0x1ba0 [obdclass]
[<0>] llog_write_rec+0x290/0x590 [obdclass]
[<0>] llog_cat_add_rec+0x201/0xa10 [obdclass]
[<0>] llog_add+0x17f/0x1f0 [obdclass]
[<0>] sub_updates_write+0x309/0xe55 [ptlrpc]
[<0>] top_trans_stop+0x49a/0xfb0 [ptlrpc]
[<0>] lod_trans_stop+0x264/0x350 [lod]
[<0>] mdd_trans_stop+0x28/0x16e [mdd]
[<0>] mdd_attr_set+0x897/0x11e0 [mdd]
[<0>] mdt_reint_setattr+0xab3/0x19a0 [mdt]
[<0>] mdt_reint_rec+0x87/0x240 [mdt]
[<0>] mdt_reint_internal+0x76c/0xba0 [mdt]
[<0>] mdt_reint+0x67/0x150 [mdt]
[<0>] tgt_request_handle+0x93a/0x19c0 [ptlrpc]
[<0>] ptlrpc_server_handle_request+0x251/0xc00 [ptlrpc]
[<0>] ptlrpc_main+0xc21/0x15f0 [ptlrpc]
[<0>] kthread+0xe4/0xf0
[<0>] ret_from_fork_nospec_begin+0x7/0x21
[<0>] 0xfffffffffffffffe 

 

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