[Bug 1942935] Re: kernel io hangs during mdcheck/resync

Hi all. At the beginning of the year we upgraded from kernel 5.4 to 6.5
and have started since then to experience this issue on several HPE
servers.

The issue is very sporadic (some servers have experienced it only once
or twice this year), so we have been restarting the servers as a
workaround, but today we found this bug report and could confirm this is
our problem. The workaround suggested on
https://bugs.launchpad.net/ubuntu/+source/linux-signed-
hwe-5.11/+bug/1942935/comments/49 worked OK for us.

However, since we're on 6.5 we can confirm the problem still persists on
that version.

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https://bugs.launchpad.net/bugs/1942935

Title:
kernel io hangs during mdcheck/resync

Status in linux package in Ubuntu:
Confirmed
Status in linux-signed-hwe-5.11 package in Ubuntu:
Confirmed
Status in linux-signed-hwe-5.15 package in Ubuntu:
Confirmed
Status in linux-signed-hwe-5.4 package in Ubuntu:
Confirmed

Bug description:
It seems to always occur during an mdcheck/resync, if I am logged in
via SSH it is still somewhat responsive and basic utilities like dmesg
will work. But it apppears any write I/O will hang the terminal and
nothing is written to syslog (presumably because it is blocked).

Below is output of dmesg and cat /proc/mdstat, it appears the data
check was interrupted and /proc/mdstat still shows progress, and a
whole slew of hung tasks including md1_resync itself.

[756484.534293] md: data-check of RAID array md0
[756484.628039] md: delaying data-check of md1 until md0 has finished (they share one or more physical units)
[756493.808773] md: md0: data-check done.
[756493.829760] md: data-check of RAID array md1
[778112.446410] md: md1: data-check interrupted.
[810654.608102] md: data-check of RAID array md1
[832291.201064] md: md1: data-check interrupted.
[899745.389485] md: data-check of RAID array md1
[921395.835305] md: md1: data-check interrupted.
[921588.558834] INFO: task systemd-journal:376 blocked for more than 120 seconds.
[921588.558846] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921588.558850] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921588.558854] task:systemd-journal state:D stack: 0 pid: 376 ppid: 1 flags:0x00000220
[921588.558859] Call Trace:
[921588.558864] __schedule+0x44c/0x8a0
[921588.558872] schedule+0x4f/0xc0
[921588.558876] md_write_start+0x150/0x240
[921588.558880] ? wait_woken+0x80/0x80
[921588.558886] raid5_make_request+0x88/0x890 [raid456]
[921588.558898] ? wait_woken+0x80/0x80
[921588.558901] ? mempool_kmalloc+0x17/0x20
[921588.558904] md_handle_request+0x12d/0x1a0
[921588.558907] ? __part_start_io_acct+0x51/0xf0
[921588.558912] md_submit_bio+0xca/0x100
[921588.558915] submit_bio_noacct+0x112/0x4f0
[921588.558918] ? ext4_fc_reserve_space+0x110/0x230
[921588.558922] submit_bio+0x51/0x1a0
[921588.558925] ? _cond_resched+0x19/0x30
[921588.558928] ? kmem_cache_alloc+0x38e/0x440
[921588.558932] ? ext4_init_io_end+0x1f/0x50
[921588.558936] ext4_io_submit+0x4d/0x60
[921588.558940] ext4_writepages+0x2c6/0xcd0
[921588.558944] do_writepages+0x43/0xd0
[921588.558948] ? do_writepages+0x43/0xd0
[921588.558951] ? fault_dirty_shared_page+0xa5/0x110
[921588.558955] __filemap_fdatawrite_range+0xcc/0x110
[921588.558960] file_write_and_wait_range+0x74/0xc0
[921588.558962] ext4_sync_file+0xf5/0x350
[921588.558967] vfs_fsync_range+0x49/0x80
[921588.558970] do_fsync+0x3d/0x70
[921588.558973] __x64_sys_fsync+0x14/0x20
[921588.558976] do_syscall_64+0x38/0x90
[921588.558980] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921588.558984] RIP: 0033:0x7f4c97ee832b
[921588.558987] RSP: 002b:00007ffdceb29e50 EFLAGS: 00000293 ORIG_RAX: 000000000000004a
[921588.558991] RAX: ffffffffffffffda RBX: 000055ced34b0fa0 RCX: 00007f4c97ee832b
[921588.558993] RDX: 00007f4c97fc8000 RSI: 000055ced3487b70 RDI: 0000000000000021
[921588.558995] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffdceb29fa8
[921588.558996] R10: 00007f4c97d2c848 R11: 0000000000000293 R12: 00007ffdceb29fa8
[921588.558998] R13: 00007ffdceb29fa0 R14: 000055ced34b0fa0 R15: 000055ced34bcf90
[921588.559014] INFO: task mysqld:1505 blocked for more than 120 seconds.
[921588.559018] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921588.559022] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921588.559025] task:mysqld state:D stack: 0 pid: 1505 ppid: 1 flags:0x00000000
[921588.559030] Call Trace:
[921588.559032] __schedule+0x44c/0x8a0
[921588.559036] schedule+0x4f/0xc0
[921588.559040] md_write_start+0x150/0x240
[921588.559044] ? wait_woken+0x80/0x80
[921588.559047] raid5_make_request+0x88/0x890 [raid456]
[921588.559056] ? wait_woken+0x80/0x80
[921588.559059] ? mempool_kmalloc+0x17/0x20
[921588.559062] md_handle_request+0x12d/0x1a0
[921588.559065] ? __part_start_io_acct+0x51/0xf0
[921588.559068] md_submit_bio+0xca/0x100
[921588.559071] submit_bio_noacct+0x112/0x4f0
[921588.559075] submit_bio+0x51/0x1a0
[921588.559077] ? _cond_resched+0x19/0x30
[921588.559081] ? kmem_cache_alloc+0x38e/0x440
[921588.559084] ? ext4_init_io_end+0x1f/0x50
[921588.559088] ext4_io_submit+0x4d/0x60
[921588.559091] ext4_writepages+0x2c6/0xcd0
[921588.559094] ? __schedule+0x454/0x8a0
[921588.559097] ? hrtimer_start_range_ns+0x1aa/0x2f0
[921588.559100] ? timerqueue_del+0x24/0x50
[921588.559105] ? futex_wait+0x1ed/0x270
[921588.559109] do_writepages+0x43/0xd0
[921588.559112] ? do_writepages+0x43/0xd0
[921588.559115] ? futex_wake+0x7c/0x180
[921588.559118] __filemap_fdatawrite_range+0xcc/0x110
[921588.559123] file_write_and_wait_range+0x74/0xc0
[921588.559126] ext4_sync_file+0xf5/0x350
[921588.559129] vfs_fsync_range+0x49/0x80
[921588.559132] ? __fget_light+0x62/0x80
[921588.559136] do_fsync+0x3d/0x70
[921588.559139] __x64_sys_fsync+0x14/0x20
[921588.559142] do_syscall_64+0x38/0x90
[921588.559145] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921588.559148] RIP: 0033:0x7f36188d48db
[921588.559150] RSP: 002b:00007f35f05487d0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a
[921588.559154] RAX: ffffffffffffffda RBX: 00007f360502bf50 RCX: 00007f36188d48db
[921588.559156] RDX: 000d239200000000 RSI: 0000000000000000 RDI: 000000000000000a
[921588.559158] RBP: 00007f35f0548a00 R08: 0000000000000000 R09: 00007f360502beb0
[921588.559160] R10: 00007f35f0548ccf R11: 0000000000000293 R12: 00007f36042e9610
[921588.559162] R13: 000000000000000a R14: 0000000000000b00 R15: 0000000000000000
[921588.559175] INFO: task mdcheck:40625 blocked for more than 120 seconds.
[921588.559179] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921588.559182] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921588.559185] task:mdcheck state:D stack: 0 pid:40625 ppid: 1 flags:0x00000000
[921588.559189] Call Trace:
[921588.559191] __schedule+0x44c/0x8a0
[921588.559196] schedule+0x4f/0xc0
[921588.559200] schedule_timeout+0x202/0x290
[921588.559203] ? do_truncate+0x78/0xd0
[921588.559216] ? try_to_wake_up+0x66/0x5c0
[921588.559220] wait_for_completion+0x94/0x100
[921588.559225] kthread_stop+0x71/0x170
[921588.559229] md_unregister_thread+0x47/0x80
[921588.559232] md_reap_sync_thread+0x24/0x200
[921588.559236] action_store+0x160/0x2e0
[921588.559239] md_attr_store+0x82/0xc0
[921588.559243] sysfs_kf_write+0x3e/0x50
[921588.559246] kernfs_fop_write_iter+0x138/0x1c0
[921588.559249] new_sync_write+0x117/0x1b0
[921588.559254] vfs_write+0x1ca/0x280
[921588.559257] ksys_write+0x67/0xe0
[921588.559260] __x64_sys_write+0x1a/0x20
[921588.559264] do_syscall_64+0x38/0x90
[921588.559267] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921588.559271] RIP: 0033:0x7f8c6d2791e7
[921588.559273] RSP: 002b:00007ffea5d97178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[921588.559276] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8c6d2791e7
[921588.559278] RDX: 0000000000000005 RSI: 000055b618a3eb40 RDI: 0000000000000001
[921588.559280] RBP: 000055b618a3eb40 R08: 000000000000000a R09: 0000000000000004
[921588.559282] R10: 000055b616e97017 R11: 0000000000000246 R12: 0000000000000005
[921588.559284] R13: 00007f8c6d3546a0 R14: 00007f8c6d3554a0 R15: 00007f8c6d3548a0
[921588.559287] INFO: task md1_resync:40644 blocked for more than 120 seconds.
[921588.559291] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921588.559294] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921588.559297] task:md1_resync state:D stack: 0 pid:40644 ppid: 2 flags:0x00004000
[921588.559301] Call Trace:
[921588.559303] __schedule+0x44c/0x8a0
[921588.559308] schedule+0x4f/0xc0
[921588.559311] md_do_sync.cold+0x8b7/0x953
[921588.559315] ? wait_woken+0x80/0x80
[921588.559319] ? kernel_sigaction+0x3b/0xd0
[921588.559323] md_thread+0xb1/0x170
[921588.559326] kthread+0x114/0x150
[921588.559329] ? md_start_sync+0x60/0x60
[921588.559332] ? kthread_park+0x90/0x90
[921588.559335] ret_from_fork+0x22/0x30
[921588.559341] INFO: task kworker/u16:0:41409 blocked for more than 120 seconds.
[921588.559345] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921588.559348] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921588.559353] task:kworker/u16:0 state:D stack: 0 pid:41409 ppid: 2 flags:0x00004000
[921588.559357] Workqueue: writeback wb_workfn (flush-253:1)
[921588.559361] Call Trace:
[921588.559363] __schedule+0x44c/0x8a0
[921588.559367] schedule+0x4f/0xc0
[921588.559371] md_write_start+0x150/0x240
[921588.559375] ? wait_woken+0x80/0x80
[921588.559378] raid5_make_request+0x88/0x890 [raid456]
[921588.559387] ? wait_woken+0x80/0x80
[921588.559390] ? mempool_kmalloc+0x17/0x20
[921588.559393] md_handle_request+0x12d/0x1a0
[921588.559396] ? __part_start_io_acct+0x51/0xf0
[921588.559399] md_submit_bio+0xca/0x100
[921588.559402] submit_bio_noacct+0x112/0x4f0
[921588.559405] submit_bio+0x51/0x1a0
[921588.559408] ? _cond_resched+0x19/0x30
[921588.559412] ? kmem_cache_alloc+0x38e/0x440
[921588.559415] ? ext4_init_io_end+0x1f/0x50
[921588.559419] ext4_io_submit+0x4d/0x60
[921588.559422] ext4_writepages+0x2c6/0xcd0
[921588.559425] ? update_group_capacity+0x2c/0x1e0
[921588.559430] do_writepages+0x43/0xd0
[921588.559433] ? do_writepages+0x43/0xd0
[921588.559436] __writeback_single_inode+0x44/0x2b0
[921588.559439] writeback_sb_inodes+0x22d/0x4c0
[921588.559443] __writeback_inodes_wb+0x56/0xf0
[921588.559446] wb_writeback+0x1ea/0x2a0
[921588.559450] wb_workfn+0x31b/0x490
[921588.559453] ? __update_idle_core+0x9b/0xb0
[921588.559456] process_one_work+0x220/0x3c0
[921588.559459] worker_thread+0x4d/0x3f0
[921588.559462] kthread+0x114/0x150
[921588.559465] ? process_one_work+0x3c0/0x3c0
[921588.559467] ? kthread_park+0x90/0x90
[921588.559471] ret_from_fork+0x22/0x30
[921709.391056] INFO: task jbd2/dm-1-8:319 blocked for more than 120 seconds.
[921709.391068] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921709.391073] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921709.391077] task:jbd2/dm-1-8 state:D stack: 0 pid: 319 ppid: 2 flags:0x00004000
[921709.391083] Call Trace:
[921709.391087] __schedule+0x44c/0x8a0
[921709.391094] schedule+0x4f/0xc0
[921709.391098] md_write_start+0x150/0x240
[921709.391103] ? wait_woken+0x80/0x80
[921709.391108] raid5_make_request+0x88/0x890 [raid456]
[921709.391120] ? wait_woken+0x80/0x80
[921709.391123] ? mempool_kmalloc+0x17/0x20
[921709.391127] md_handle_request+0x12d/0x1a0
[921709.391130] ? __part_start_io_acct+0x51/0xf0
[921709.391134] md_submit_bio+0xca/0x100
[921709.391137] submit_bio_noacct+0x112/0x4f0
[921709.391141] submit_bio+0x51/0x1a0
[921709.391144] ? bio_add_page+0x6a/0x90
[921709.391147] submit_bh_wbc+0x195/0x1c0
[921709.391151] submit_bh+0x13/0x20
[921709.391154] jbd2_journal_commit_transaction+0x74b/0x18f0
[921709.391159] ? try_to_del_timer_sync+0x54/0x80
[921709.391164] kjournald2+0xb6/0x280
[921709.391168] ? wait_woken+0x80/0x80
[921709.391170] kthread+0x114/0x150
[921709.391174] ? commit_timeout+0x20/0x20
[921709.391177] ? kthread_park+0x90/0x90
[921709.391180] ret_from_fork+0x22/0x30
[921709.391186] INFO: task systemd-journal:376 blocked for more than 241 seconds.
[921709.391191] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921709.391195] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921709.391199] task:systemd-journal state:D stack: 0 pid: 376 ppid: 1 flags:0x00000220
[921709.391204] Call Trace:
[921709.391205] __schedule+0x44c/0x8a0
[921709.391210] schedule+0x4f/0xc0
[921709.391214] md_write_start+0x150/0x240
[921709.391218] ? wait_woken+0x80/0x80
[921709.391221] raid5_make_request+0x88/0x890 [raid456]
[921709.391230] ? wait_woken+0x80/0x80
[921709.391233] ? mempool_kmalloc+0x17/0x20
[921709.391236] md_handle_request+0x12d/0x1a0
[921709.391239] ? __part_start_io_acct+0x51/0xf0
[921709.391242] md_submit_bio+0xca/0x100
[921709.391245] submit_bio_noacct+0x112/0x4f0
[921709.391248] ? ext4_fc_reserve_space+0x110/0x230
[921709.391252] submit_bio+0x51/0x1a0
[921709.391255] ? _cond_resched+0x19/0x30
[921709.391259] ? kmem_cache_alloc+0x38e/0x440
[921709.391262] ? ext4_init_io_end+0x1f/0x50
[921709.391266] ext4_io_submit+0x4d/0x60
[921709.391270] ext4_writepages+0x2c6/0xcd0
[921709.391274] do_writepages+0x43/0xd0
[921709.391278] ? do_writepages+0x43/0xd0
[921709.391281] ? fault_dirty_shared_page+0xa5/0x110
[921709.391285] __filemap_fdatawrite_range+0xcc/0x110
[921709.391290] file_write_and_wait_range+0x74/0xc0
[921709.391293] ext4_sync_file+0xf5/0x350
[921709.391297] vfs_fsync_range+0x49/0x80
[921709.391300] do_fsync+0x3d/0x70
[921709.391303] __x64_sys_fsync+0x14/0x20
[921709.391306] do_syscall_64+0x38/0x90
[921709.391310] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921709.391314] RIP: 0033:0x7f4c97ee832b
[921709.391317] RSP: 002b:00007ffdceb29e50 EFLAGS: 00000293 ORIG_RAX: 000000000000004a
[921709.391321] RAX: ffffffffffffffda RBX: 000055ced34b0fa0 RCX: 00007f4c97ee832b
[921709.391323] RDX: 00007f4c97fc8000 RSI: 000055ced3487b70 RDI: 0000000000000021
[921709.391325] RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffdceb29fa8
[921709.391327] R10: 00007f4c97d2c848 R11: 0000000000000293 R12: 00007ffdceb29fa8
[921709.391329] R13: 00007ffdceb29fa0 R14: 000055ced34b0fa0 R15: 000055ced34bcf90
[921709.391343] INFO: task mysqld:1505 blocked for more than 241 seconds.
[921709.391348] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921709.391351] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921709.391355] task:mysqld state:D stack: 0 pid: 1505 ppid: 1 flags:0x00000000
[921709.391359] Call Trace:
[921709.391361] __schedule+0x44c/0x8a0
[921709.391366] schedule+0x4f/0xc0
[921709.391370] md_write_start+0x150/0x240
[921709.391373] ? wait_woken+0x80/0x80
[921709.391376] raid5_make_request+0x88/0x890 [raid456]
[921709.391386] ? wait_woken+0x80/0x80
[921709.391388] ? mempool_kmalloc+0x17/0x20
[921709.391391] md_handle_request+0x12d/0x1a0
[921709.391395] ? __part_start_io_acct+0x51/0xf0
[921709.391398] md_submit_bio+0xca/0x100
[921709.391401] submit_bio_noacct+0x112/0x4f0
[921709.391404] submit_bio+0x51/0x1a0
[921709.391407] ? _cond_resched+0x19/0x30
[921709.391411] ? kmem_cache_alloc+0x38e/0x440
[921709.391414] ? ext4_init_io_end+0x1f/0x50
[921709.391418] ext4_io_submit+0x4d/0x60
[921709.391421] ext4_writepages+0x2c6/0xcd0
[921709.391423] ? __schedule+0x454/0x8a0
[921709.391427] ? hrtimer_start_range_ns+0x1aa/0x2f0
[921709.391430] ? timerqueue_del+0x24/0x50
[921709.391435] ? futex_wait+0x1ed/0x270
[921709.391439] do_writepages+0x43/0xd0
[921709.391443] ? do_writepages+0x43/0xd0
[921709.391445] ? futex_wake+0x7c/0x180
[921709.391449] __filemap_fdatawrite_range+0xcc/0x110
[921709.391453] file_write_and_wait_range+0x74/0xc0
[921709.391456] ext4_sync_file+0xf5/0x350
[921709.391459] vfs_fsync_range+0x49/0x80
[921709.391463] ? __fget_light+0x62/0x80
[921709.391466] do_fsync+0x3d/0x70
[921709.391469] __x64_sys_fsync+0x14/0x20
[921709.391472] do_syscall_64+0x38/0x90
[921709.391475] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921709.391478] RIP: 0033:0x7f36188d48db
[921709.391481] RSP: 002b:00007f35f05487d0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a
[921709.391484] RAX: ffffffffffffffda RBX: 00007f360502bf50 RCX: 00007f36188d48db
[921709.391486] RDX: 000d239200000000 RSI: 0000000000000000 RDI: 000000000000000a
[921709.391488] RBP: 00007f35f0548a00 R08: 0000000000000000 R09: 00007f360502beb0
[921709.391490] R10: 00007f35f0548ccf R11: 0000000000000293 R12: 00007f36042e9610
[921709.391491] R13: 000000000000000a R14: 0000000000000b00 R15: 0000000000000000
[921709.391505] INFO: task mdcheck:40625 blocked for more than 241 seconds.
[921709.391510] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921709.391514] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921709.391518] task:mdcheck state:D stack: 0 pid:40625 ppid: 1 flags:0x00000000
[921709.391522] Call Trace:
[921709.391524] __schedule+0x44c/0x8a0
[921709.391528] schedule+0x4f/0xc0
[921709.391532] schedule_timeout+0x202/0x290
[921709.391535] ? do_truncate+0x78/0xd0
[921709.391538] ? try_to_wake_up+0x66/0x5c0
[921709.391542] wait_for_completion+0x94/0x100
[921709.391547] kthread_stop+0x71/0x170
[921709.391550] md_unregister_thread+0x47/0x80
[921709.391554] md_reap_sync_thread+0x24/0x200
[921709.391557] action_store+0x160/0x2e0
[921709.391561] md_attr_store+0x82/0xc0
[921709.391564] sysfs_kf_write+0x3e/0x50
[921709.391567] kernfs_fop_write_iter+0x138/0x1c0
[921709.391571] new_sync_write+0x117/0x1b0
[921709.391575] vfs_write+0x1ca/0x280
[921709.391578] ksys_write+0x67/0xe0
[921709.391581] __x64_sys_write+0x1a/0x20
[921709.391584] do_syscall_64+0x38/0x90
[921709.391588] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[921709.391591] RIP: 0033:0x7f8c6d2791e7
[921709.391593] RSP: 002b:00007ffea5d97178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[921709.391597] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f8c6d2791e7
[921709.391599] RDX: 0000000000000005 RSI: 000055b618a3eb40 RDI: 0000000000000001
[921709.391600] RBP: 000055b618a3eb40 R08: 000000000000000a R09: 0000000000000004
[921709.391602] R10: 000055b616e97017 R11: 0000000000000246 R12: 0000000000000005
[921709.391604] R13: 00007f8c6d3546a0 R14: 00007f8c6d3554a0 R15: 00007f8c6d3548a0
[921709.391607] INFO: task md1_resync:40644 blocked for more than 241 seconds.
[921709.391611] Not tainted 5.11.0-27-generic #29~20.04.1-Ubuntu
[921709.391615] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[921709.391619] task:md1_resync state:D stack: 0 pid:40644 ppid: 2 flags:0x00004000
[921709.391623] Call Trace:
[921709.391625] __schedule+0x44c/0x8a0
[921709.391631] schedule+0x4f/0xc0
[921709.391635] md_do_sync.cold+0x8b7/0x953
[921709.391639] ? wait_woken+0x80/0x80
[921709.391642] ? kernel_sigaction+0x3b/0xd0
[921709.391646] md_thread+0xb1/0x170
[921709.391650] kthread+0x114/0x150
[921709.391652] ? md_start_sync+0x60/0x60
[921709.391655] ? kthread_park+0x90/0x90
[921709.391658] ret_from_fork+0x22/0x30
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md1 : active raid5 sda3[0] sdd3[3] sdb3[1] sde3[5] sdc3[6]
15625582592 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]
[================>....] check = 84.2% (3289834208/3906395648) finish=82779.6min speed=124K/sec

md0 : active raid1 sda2[0] sdb2[1] sdc2[2](S)
488128 blocks super 1.2 [2/2] [UU]

unused devices: <none>

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.11.0-27-generic 5.11.0-27.29~20.04.1
ProcVersionSignature: Ubuntu 5.11.0-27.29~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Sep 7 16:35:01 2021
InstallationDate: Installed on 2014-03-12 (2736 days ago)
InstallationMedia: Ubuntu-Server 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.11
UpgradeStatus: Upgraded to focal on 2020-12-20 (261 days ago)
---
ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.13.0-16-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.11-0ubuntu69
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: unknown
DistroRelease: Ubuntu 21.10
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lspci: Error: [Errno 2] No such file or directory: 'lspci'
Lspci-vt: Error: [Errno 2] No such file or directory: 'lspci'
Lsusb: Error: [Errno 2] No such file or directory: 'lsusb'
Lsusb-t: Error: [Errno 2] No such file or directory: 'lsusb'
Lsusb-v: Error: [Errno 2] No such file or directory: 'lsusb'
MachineType: innotek GmbH VirtualBox
Package: linux-signed-hwe-5.11
PciMultimedia:

ProcEnviron:
TERM=linux
PATH=(custom, no user)
SHELL=/bin/bash
ProcFB: 0 svgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-16-generic root=/dev/mapper/vg1-root ro quiet splash
ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13
RelatedPackageVersions:
linux-restricted-modules-5.13.0-16-generic N/A
linux-backports-modules-5.13.0-16-generic N/A
linux-firmware 1.199
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
Tags: impish
Uname: Linux 5.13.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
_MarkForUpload: True
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:sku:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.family: Virtual Machine
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH

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