Re: [bug report] INFO: task mdX_resync:42168 blocked for more than 122 seconds

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On Tue, May 21, 2024 at 9:09 AM Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> wrote:

>
> Thanks for the test! Since raid10 has the same problem as well, then the
> problem seems to be more common in raid. And related code to raid10 is
> more simpler, attached is a patch to add debuginfo to raid10.
>
> BTW, Xiao can reporduce the problem as well, and will lend a hand as
> well.
>
> Thanks,
> Kuai


Hi, Yu Kuai and Xiao

thanks for  efforts on this issue,
after applying the debug patch, I got the following results, please check it

[  597.491083] Create raid10
[  597.647987] device-mapper: raid: Superblocks created for new raid set
[  597.680540] md/raid10:mdX: not clean -- starting background reconstruction
[  597.680549] md/raid10:mdX: active with 4 out of 4 devices
[  597.683779] mdX: bitmap file is out of date, doing full recovery
[  597.692971] md: resync of RAID array mdX
[  597.753583] try_raise_barrier: resync depth exceed limit
[  597.759540] try_raise_barrier: resync depth exceed limit
[  597.765504] try_raise_barrier: resync depth exceed limit
[  597.771432] try_raise_barrier: resync depth exceed limit
[  597.779400] barrier_waiting: nr_waiting 1
[  597.783879] barrier_waiting: nr_waiting 1
[  597.788356] barrier_waiting: nr_waiting 1
[  597.792838] barrier_waiting: nr_waiting 1
[  597.797327] barrier_waiting: nr_waiting 1
[  597.801806] barrier_waiting: nr_waiting 1
[  597.806288] barrier_waiting: nr_waiting 1
[  597.810780] barrier_waiting: nr_waiting 1
[  597.815252] barrier_waiting: nr_waiting 1
[  597.819737] barrier_waiting: nr_waiting 1
[  597.824232] barrier_waiting: nr_waiting 1
[  597.828714] barrier_waiting: nr_waiting 1
[  597.833196] barrier_waiting: nr_waiting 1
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[  597.855610] barrier_waiting: nr_waiting 1
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[  599.540470] barrier_waiting: nr_waiting 1
[  599.544955] barrier_waiting: nr_waiting 1
[  599.549426] barrier_waiting: nr_waiting 1
[  599.553904] barrier_waiting: nr_waiting 1
[  599.558384] barrier_waiting: nr_waiting 1
[  599.562863] barrier_waiting: nr_waiting 1
[  599.567342] barrier_waiting: nr_waiting 1
[  599.571820] barrier_waiting: nr_waiting 1
[  599.576298] barrier_waiting: nr_waiting 1
[  599.580779] barrier_waiting: nr_waiting 1
[  599.585254] wait_barrier: nr_pending: 1
[  599.589540] try_raise_barrier: nr_pending 1
[  599.589547] raid10_read_request: r10_bio ff3b41340eb53600 start
[  599.594209] try_raise_barrier: nr_pending 1
[  599.605582] try_raise_barrier: nr_pending 1
[  599.605674] allow_barrier: nr_pending: 0
[  599.610620] wait_barrier: nr_pending: 1
[  599.614653] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  599.618935] try_raise_barrier: nr_pending 1
[  599.618938] try_raise_barrier: nr_pending 1
[  599.618965] raid10_read_request: r10_bio ff3b4134184a6100 start
[  599.641092] try_raise_barrier: nr_pending 1
[  599.641145] allow_barrier: nr_pending: 0
[  599.646251] wait_barrier: nr_pending: 1
[  599.650157] raid_end_bio_io: r10_bio ff3b4134184a6100 done
[  599.654437] try_raise_barrier: nr_pending 1
[  599.654446] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.654575] allow_barrier: nr_pending: 0
[  599.654583] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  599.682715] wait_barrier: nr_pending: 1
[  599.687000] try_raise_barrier: nr_pending 1
[  599.687012] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  599.691672] try_raise_barrier: nr_pending 1
[  599.703020] try_raise_barrier: nr_pending 1
[  599.703069] allow_barrier: nr_pending: 0
[  599.708037] wait_barrier: nr_pending: 1
[  599.712092] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  599.716368] try_raise_barrier: nr_pending 1
[  599.716372] try_raise_barrier: nr_pending 1
[  599.716377] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.738510] try_raise_barrier: nr_pending 1
[  599.738554] allow_barrier: nr_pending: 0
[  599.743663] wait_barrier: nr_pending: 1
[  599.747583] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  599.751853] try_raise_barrier: nr_pending 1
[  599.751857] try_raise_barrier: nr_pending 1
[  599.751864] raid10_read_request: r10_bio ff3b41340eb53600 start
[  599.773945] try_raise_barrier: nr_pending 1
[  599.774058] allow_barrier: nr_pending: 0
[  599.779116] wait_barrier: nr_pending: 1
[  599.783020] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  599.787298] try_raise_barrier: nr_pending 1
[  599.787307] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.787461] allow_barrier: nr_pending: 0
[  599.787469] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  599.815585] wait_barrier: nr_pending: 1
[  599.819872] try_raise_barrier: nr_pending 1
[  599.819883] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  599.824546] try_raise_barrier: nr_pending 1
[  599.835892] try_raise_barrier: nr_pending 1
[  599.835904] allow_barrier: nr_pending: 0
[  599.840922] wait_barrier: nr_pending: 1
[  599.844957] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  599.849235] try_raise_barrier: nr_pending 1
[  599.849239] try_raise_barrier: nr_pending 1
[  599.849244] raid10_read_request: r10_bio ff3b41340eb53600 start
[  599.871381] try_raise_barrier: nr_pending 1
[  599.871463] allow_barrier: nr_pending: 0
[  599.876542] wait_barrier: nr_pending: 1
[  599.880451] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  599.884730] try_raise_barrier: nr_pending 1
[  599.884735] try_raise_barrier: nr_pending 1
[  599.884740] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.884889] allow_barrier: nr_pending: 0
[  599.884897] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  599.917789] wait_barrier: nr_pending: 1
[  599.922088] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.922159] try_raise_barrier: nr_pending 1
[  599.928829] allow_barrier: nr_pending: 0
[  599.933736] wait_barrier: nr_pending: 1
[  599.937771] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  599.942045] try_raise_barrier: nr_pending 1
[  599.942049] try_raise_barrier: nr_pending 1
[  599.942058] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  599.964202] try_raise_barrier: nr_pending 1
[  599.964262] allow_barrier: nr_pending: 0
[  599.969461] wait_barrier: nr_pending: 1
[  599.973275] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  599.977553] try_raise_barrier: nr_pending 1
[  599.977559] try_raise_barrier: nr_pending 1
[  599.977562] raid10_read_request: r10_bio ff3b41340eb53900 start
[  599.977715] allow_barrier: nr_pending: 0
[  599.977723] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.010600] wait_barrier: nr_pending: 1
[  600.014887] try_raise_barrier: nr_pending 1
[  600.014898] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.019559] try_raise_barrier: nr_pending 1
[  600.030909] try_raise_barrier: nr_pending 1
[  600.030917] allow_barrier: nr_pending: 0
[  600.036049] wait_barrier: nr_pending: 1
[  600.039974] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.044253] try_raise_barrier: nr_pending 1
[  600.044257] try_raise_barrier: nr_pending 1
[  600.044263] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.066363] try_raise_barrier: nr_pending 1
[  600.066461] allow_barrier: nr_pending: 0
[  600.071440] wait_barrier: nr_pending: 1
[  600.075443] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.079722] try_raise_barrier: nr_pending 1
[  600.079727] try_raise_barrier: nr_pending 1
[  600.079731] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.079868] allow_barrier: nr_pending: 0
[  600.079875] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.112682] wait_barrier: nr_pending: 1
[  600.116967] try_raise_barrier: nr_pending 1
[  600.116978] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.121640] try_raise_barrier: nr_pending 1
[  600.132990] try_raise_barrier: nr_pending 1
[  600.133057] allow_barrier: nr_pending: 0
[  600.138070] wait_barrier: nr_pending: 1
[  600.142062] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.146337] try_raise_barrier: nr_pending 1
[  600.146342] try_raise_barrier: nr_pending 1
[  600.146348] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.168487] try_raise_barrier: nr_pending 1
[  600.168532] allow_barrier: nr_pending: 0
[  600.173662] wait_barrier: nr_pending: 1
[  600.177563] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.181840] try_raise_barrier: nr_pending 1
[  600.181845] try_raise_barrier: nr_pending 1
[  600.181849] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.181983] allow_barrier: nr_pending: 0
[  600.181991] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.214790] wait_barrier: nr_pending: 1
[  600.219075] try_raise_barrier: nr_pending 1
[  600.219087] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.223748] try_raise_barrier: nr_pending 1
[  600.235099] try_raise_barrier: nr_pending 1
[  600.235150] allow_barrier: nr_pending: 0
[  600.240130] wait_barrier: nr_pending: 1
[  600.244170] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.248446] try_raise_barrier: nr_pending 1
[  600.248450] try_raise_barrier: nr_pending 1
[  600.248456] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.270600] try_raise_barrier: nr_pending 1
[  600.270648] allow_barrier: nr_pending: 0
[  600.275752] wait_barrier: nr_pending: 1
[  600.279676] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.283952] try_raise_barrier: nr_pending 1
[  600.283956] try_raise_barrier: nr_pending 1
[  600.283961] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.284093] allow_barrier: nr_pending: 0
[  600.284100] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.316975] wait_barrier: nr_pending: 1
[  600.321262] try_raise_barrier: nr_pending 1
[  600.321273] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.325936] try_raise_barrier: nr_pending 1
[  600.337279] allow_barrier: nr_pending: 0
[  600.337649] wait_barrier: nr_pending: 1
[  600.341674] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.345947] try_raise_barrier: nr_pending 1
[  600.345951] try_raise_barrier: nr_pending 1
[  600.345958] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.368088] try_raise_barrier: nr_pending 1
[  600.368129] allow_barrier: nr_pending: 0
[  600.373070] wait_barrier: nr_pending: 1
[  600.377153] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.381430] try_raise_barrier: nr_pending 1
[  600.381434] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.381555] allow_barrier: nr_pending: 0
[  600.381562] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.409730] wait_barrier: nr_pending: 1
[  600.414012] try_raise_barrier: nr_pending 1
[  600.414015] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.418685] try_raise_barrier: nr_pending 1
[  600.430034] try_raise_barrier: nr_pending 1
[  600.430085] allow_barrier: nr_pending: 0
[  600.435126] wait_barrier: nr_pending: 1
[  600.439107] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.443388] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.443462] try_raise_barrier: nr_pending 1
[  600.443466] try_raise_barrier: nr_pending 1
[  600.465548] try_raise_barrier: nr_pending 1
[  600.465585] allow_barrier: nr_pending: 0
[  600.470613] wait_barrier: nr_pending: 1
[  600.474627] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.478903] try_raise_barrier: nr_pending 1
[  600.478910] try_raise_barrier: nr_pending 1
[  600.478912] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.479045] allow_barrier: nr_pending: 0
[  600.479053] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.511838] wait_barrier: nr_pending: 1
[  600.516124] try_raise_barrier: nr_pending 1
[  600.516135] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.520797] try_raise_barrier: nr_pending 1
[  600.532156] try_raise_barrier: nr_pending 1
[  600.532225] allow_barrier: nr_pending: 0
[  600.537288] wait_barrier: nr_pending: 1
[  600.541229] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.545505] try_raise_barrier: nr_pending 1
[  600.545509] try_raise_barrier: nr_pending 1
[  600.545515] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.567662] try_raise_barrier: nr_pending 1
[  600.567696] allow_barrier: nr_pending: 0
[  600.572778] wait_barrier: nr_pending: 1
[  600.576742] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.581017] try_raise_barrier: nr_pending 1
[  600.581023] try_raise_barrier: nr_pending 1
[  600.581028] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.581145] allow_barrier: nr_pending: 0
[  600.581152] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.613893] wait_barrier: nr_pending: 1
[  600.618178] try_raise_barrier: nr_pending 1
[  600.618188] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.622851] try_raise_barrier: nr_pending 1
[  600.634242] try_raise_barrier: nr_pending 1
[  600.634317] allow_barrier: nr_pending: 0
[  600.639159] wait_barrier: nr_pending: 1
[  600.643299] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.647575] try_raise_barrier: nr_pending 1
[  600.647579] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.647579] try_raise_barrier: nr_pending 1
[  600.647633] allow_barrier: nr_pending: 0
[  600.647637] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.680526] wait_barrier: nr_pending: 1
[  600.684819] try_raise_barrier: nr_pending 1
[  600.684841] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.689492] try_raise_barrier: nr_pending 1
[  600.700853] try_raise_barrier: nr_pending 1
[  600.700910] allow_barrier: nr_pending: 0
[  600.706030] wait_barrier: nr_pending: 1
[  600.709914] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.714193] try_raise_barrier: nr_pending 1
[  600.714197] try_raise_barrier: nr_pending 1
[  600.714205] raid10_read_request: r10_bio ff3b4134184a6100 start
[  600.714376] allow_barrier: nr_pending: 0
[  600.714383] raid_end_bio_io: r10_bio ff3b4134184a6100 done
[  600.747144] wait_barrier: nr_pending: 1
[  600.751430] try_raise_barrier: nr_pending 1
[  600.751442] raid10_read_request: r10_bio ff3b4134184a6b00 start
[  600.756102] try_raise_barrier: nr_pending 1
[  600.767448] try_raise_barrier: nr_pending 1
[  600.767537] allow_barrier: nr_pending: 0
[  600.772502] wait_barrier: nr_pending: 1
[  600.776516] raid_end_bio_io: r10_bio ff3b4134184a6b00 done
[  600.780795] try_raise_barrier: nr_pending 1
[  600.780799] try_raise_barrier: nr_pending 1
[  600.780808] raid10_read_request: r10_bio ff3b4134184a7f00 start
[  600.802876] try_raise_barrier: nr_pending 1
[  600.803016] allow_barrier: nr_pending: 0
[  600.808000] wait_barrier: nr_pending: 1
[  600.811943] raid_end_bio_io: r10_bio ff3b4134184a7f00 done
[  600.816225] try_raise_barrier: nr_pending 1
[  600.816229] try_raise_barrier: nr_pending 1
[  600.816245] raid10_read_request: r10_bio ff3b4134184a7400 start
[  600.838385] try_raise_barrier: nr_pending 1
[  600.838448] allow_barrier: nr_pending: 0
[  600.843556] wait_barrier: nr_pending: 1
[  600.847451] raid_end_bio_io: r10_bio ff3b4134184a7400 done
[  600.851722] try_raise_barrier: nr_pending 1
[  600.851726] try_raise_barrier: nr_pending 1
[  600.851732] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.851897] allow_barrier: nr_pending: 0
[  600.851904] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.884632] wait_barrier: nr_pending: 1
[  600.888917] try_raise_barrier: nr_pending 1
[  600.888929] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.893588] try_raise_barrier: nr_pending 1
[  600.904881] try_raise_barrier: nr_pending 1
[  600.905028] allow_barrier: nr_pending: 0
[  600.909930] wait_barrier: nr_pending: 1
[  600.913958] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  600.918233] try_raise_barrier: nr_pending 1
[  600.918237] try_raise_barrier: nr_pending 1
[  600.918245] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  600.940401] try_raise_barrier: nr_pending 1
[  600.940502] allow_barrier: nr_pending: 0
[  600.945589] wait_barrier: nr_pending: 1
[  600.949477] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  600.953755] try_raise_barrier: nr_pending 1
[  600.953760] try_raise_barrier: nr_pending 1
[  600.953765] raid10_read_request: r10_bio ff3b41340eb53600 start
[  600.953893] allow_barrier: nr_pending: 0
[  600.953901] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  600.986653] wait_barrier: nr_pending: 1
[  600.990939] try_raise_barrier: nr_pending 1
[  600.990949] raid10_read_request: r10_bio ff3b41340eb53900 start
[  600.995611] try_raise_barrier: nr_pending 1
[  601.006963] try_raise_barrier: nr_pending 1
[  601.007109] allow_barrier: nr_pending: 0
[  601.011808] wait_barrier: nr_pending: 1
[  601.016031] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  601.020309] try_raise_barrier: nr_pending 1
[  601.020313] try_raise_barrier: nr_pending 1
[  601.020319] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.042453] allow_barrier: nr_pending: 0
[  601.042803] wait_barrier: nr_pending: 1
[  601.046853] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.051120] try_raise_barrier: nr_pending 1
[  601.051125] raid10_read_request: r10_bio ff3b41340eb53600 start
[  601.051126] try_raise_barrier: nr_pending 1
[  601.051145] try_raise_barrier: nr_pending 1
[  601.051415] allow_barrier: nr_pending: 0
[  601.051422] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  601.088815] wait_barrier: nr_pending: 1
[  601.093099] try_raise_barrier: nr_pending 1
[  601.093111] raid10_read_request: r10_bio ff3b41340eb53900 start
[  601.097772] try_raise_barrier: nr_pending 1
[  601.109103] try_raise_barrier: nr_pending 1
[  601.109172] allow_barrier: nr_pending: 0
[  601.114259] wait_barrier: nr_pending: 1
[  601.118177] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  601.122446] try_raise_barrier: nr_pending 1
[  601.122450] try_raise_barrier: nr_pending 1
[  601.122459] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.144607] try_raise_barrier: nr_pending 1
[  601.144650] allow_barrier: nr_pending: 0
[  601.149688] wait_barrier: nr_pending: 1
[  601.153683] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.157960] try_raise_barrier: nr_pending 1
[  601.157964] try_raise_barrier: nr_pending 1
[  601.157970] raid10_read_request: r10_bio ff3b41340eb53600 start
[  601.180129] try_raise_barrier: nr_pending 1
[  601.180240] allow_barrier: nr_pending: 0
[  601.185207] wait_barrier: nr_pending: 1
[  601.189209] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  601.193485] try_raise_barrier: nr_pending 1
[  601.193497] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.193706] allow_barrier: nr_pending: 0
[  601.193714] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.221868] wait_barrier: nr_pending: 1
[  601.226153] try_raise_barrier: nr_pending 1
[  601.226164] raid10_read_request: r10_bio ff3b41340eb53900 start
[  601.230826] try_raise_barrier: nr_pending 1
[  601.242175] try_raise_barrier: nr_pending 1
[  601.242239] allow_barrier: nr_pending: 0
[  601.247321] wait_barrier: nr_pending: 1
[  601.251249] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  601.255526] try_raise_barrier: nr_pending 1
[  601.255530] try_raise_barrier: nr_pending 1
[  601.255536] raid10_read_request: r10_bio ff3b41340eb53600 start
[  601.277688] try_raise_barrier: nr_pending 1
[  601.277818] allow_barrier: nr_pending: 0
[  601.282730] wait_barrier: nr_pending: 1
[  601.286761] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  601.291037] try_raise_barrier: nr_pending 1
[  601.291043] try_raise_barrier: nr_pending 1
[  601.291047] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.313190] try_raise_barrier: nr_pending 1
[  601.313248] allow_barrier: nr_pending: 0
[  601.318267] wait_barrier: nr_pending: 1
[  601.322269] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.326544] try_raise_barrier: nr_pending 1
[  601.326551] try_raise_barrier: nr_pending 1
[  601.326556] raid10_read_request: r10_bio ff3b41340eb53600 start
[  601.326708] allow_barrier: nr_pending: 0
[  601.326716] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  601.359595] wait_barrier: nr_pending: 1
[  601.363882] try_raise_barrier: nr_pending 1
[  601.363893] raid10_read_request: r10_bio ff3b41340eb53900 start
[  601.368556] try_raise_barrier: nr_pending 1
[  601.379906] try_raise_barrier: nr_pending 1
[  601.379973] allow_barrier: nr_pending: 0
[  601.385040] wait_barrier: nr_pending: 1
[  601.388979] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  601.393255] try_raise_barrier: nr_pending 1
[  601.393260] try_raise_barrier: nr_pending 1
[  601.393268] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.415361] try_raise_barrier: nr_pending 1
[  601.415483] allow_barrier: nr_pending: 0
[  601.420443] wait_barrier: nr_pending: 1
[  601.424436] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.428713] try_raise_barrier: nr_pending 1
[  601.428716] try_raise_barrier: nr_pending 1
[  601.428723] raid10_read_request: r10_bio ff3b41340eb53600 start
[  601.450871] try_raise_barrier: nr_pending 1
[  601.450916] allow_barrier: nr_pending: 0
[  601.455878] wait_barrier: nr_pending: 1
[  601.459951] raid_end_bio_io: r10_bio ff3b41340eb53600 done
[  601.464227] try_raise_barrier: nr_pending 1
[  601.464231] raid10_read_request: r10_bio ff3b41340eb52d00 start
[  601.481634] try_raise_barrier: nr_pending 1
[  601.486439] allow_barrier: nr_pending: 0
[  601.486947] wait_barrier: nr_pending: 1
[  601.490841] raid_end_bio_io: r10_bio ff3b41340eb52d00 done
[  601.495112] try_raise_barrier: nr_pending 1
[  601.495116] try_raise_barrier: nr_pending 1
[  601.495122] raid10_read_request: r10_bio ff3b41340eb53900 start
[  601.517260] try_raise_barrier: nr_pending 1
[  601.517346] allow_barrier: nr_pending: 0
[  601.522456] wait_barrier: nr_pending: 1
[  601.526326] raid_end_bio_io: r10_bio ff3b41340eb53900 done
[  601.530603] try_raise_barrier: nr_pending 1
[  601.530608] try_raise_barrier: nr_pending 1
[  601.530612] raid10_write_request: r10_bio ff3b41340eb52d00 start
[  601.552782] try_raise_barrier: nr_pending 1
[  737.970751] INFO: task mdX_resync:3115 blocked for more than 122 seconds.
[  737.978361]       Not tainted 6.9.0+ #1
[  737.982654] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[  737.991398] task:mdX_resync      state:D stack:0     pid:3115
tgid:3115  ppid:2      flags:0x00004000
[  737.991407] Call Trace:
[  737.991410]  <TASK>
[  737.991414]  __schedule+0x222/0x670
[  737.991426]  schedule+0x2c/0xb0
[  737.991434]  raise_barrier+0xca/0x1a0 [raid10]
[  737.991450]  ? __pfx_autoremove_wake_function+0x10/0x10
[  737.991459]  raid10_sync_request+0x2c3/0x19d0 [raid10]
[  737.991472]  ? __switch_to_asm+0x39/0x70
[  737.991478]  ? finish_task_switch.isra.0+0x8e/0x2a0
[  737.991487]  ? __schedule+0x22a/0x670
[  737.991491]  ? prepare_to_wait_event+0x5f/0x190
[  737.991498]  md_do_sync+0x660/0x1040
[  737.991508]  ? __pfx_autoremove_wake_function+0x10/0x10
[  737.991517]  md_thread+0xad/0x160
[  737.991521]  ? __pfx_md_thread+0x10/0x10
[  737.991524]  kthread+0xdc/0x110
[  737.991531]  ? __pfx_kthread+0x10/0x10
[  737.991535]  ret_from_fork+0x2d/0x50
[  737.991544]  ? __pfx_kthread+0x10/0x10
[  737.991547]  ret_from_fork_asm+0x1a/0x30
[  737.991553]  </TASK>
[  860.850998] INFO: task mdX_resync:3115 blocked for more than 245 seconds.
[  860.858606]       Not tainted 6.9.0+ #1
[  860.862902] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[  860.871649] task:mdX_resync      state:D stack:0     pid:3115
tgid:3115  ppid:2      flags:0x00004000
[  860.871658] Call Trace:
[  860.871660]  <TASK>
[  860.871664]  __schedule+0x222/0x670
[  860.871674]  schedule+0x2c/0xb0
[  860.871681]  raise_barrier+0xca/0x1a0 [raid10]
[  860.871696]  ? __pfx_autoremove_wake_function+0x10/0x10
[  860.871704]  raid10_sync_request+0x2c3/0x19d0 [raid10]
[  860.871717]  ? __switch_to_asm+0x39/0x70
[  860.871722]  ? finish_task_switch.isra.0+0x8e/0x2a0
[  860.871729]  ? __schedule+0x22a/0x670
[  860.871733]  ? prepare_to_wait_event+0x5f/0x190
[  860.871740]  md_do_sync+0x660/0x1040
[  860.871748]  ? __pfx_autoremove_wake_function+0x10/0x10
[  860.871756]  md_thread+0xad/0x160
[  860.871761]  ? __pfx_md_thread+0x10/0x10
[  860.871765]  kthread+0xdc/0x110
[  860.871770]  ? __pfx_kthread+0x10/0x10
[  860.871774]  ret_from_fork+0x2d/0x50
[  860.871781]  ? __pfx_kthread+0x10/0x10
[  860.871785]  ret_from_fork_asm+0x1a/0x30
[  860.871790]  </TASK>

Thanks,
Changhui






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