Re: request for help on IMSM-metadata RAID-5 array

[Joel Parthemore <joel@parthemores.com>]

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Den 2023-09-26 kl. 03:10, skrev Yu Kuai:


>>> It'll be much helper for developers to collect kernel stack for all 
>>> stuck thread(and it'll be much better to use add2line).
>>
>>
>> Presuming I can re-create the problem, let me know what I should do 
>> to collect that information for you. I'm very much a newbie in that 
>> area.
>
> You can use following cmd:
>
> for pid in `ps -elf | grep " D " | awk '{print $4}'`; do ps $pid; cat 
> /proc/$pid/stack; done
>
> Thanks,
> Kuai


for pid in `ps -elf | grep " D " | awk '{print $4}'`; do ps $pid; cat 
/proc/$pid/stack; done
   PID TTY      STAT   TIME COMMAND
  4017 tty1     D+     0:00 e2fsck /dev/md126
[<0>] md_write_start+0x191/0x310
[<0>] raid5_make_request+0x90/0x1230 [raid456]
[<0>] md_handle_request+0x129/0x210
[<0>] __submit_bio+0x7f/0x110
[<0>] submit_bio_noacct_nocheck+0x150/0x360
[<0>] __block_write_full_folio+0x1d8/0x3f0
[<0>] writepage_cb+0x11/0x70
[<0>] write_cache_pages+0x13a/0x390
[<0>] do_writepages+0x15b/0x1e0
[<0>] filemap_fdatawrite_wbc+0x5a/0x80
[<0>] __filemap_fdatawrite_range+0x53/0x80
[<0>] filemap_write_and_wait_range+0x3a/0xa0
[<0>] blkdev_put+0x116/0x1c0
[<0>] blkdev_release+0x22/0x30
[<0>] __fput+0xe5/0x290
[<0>] task_work_run+0x51/0x80
[<0>] exit_to_user_mode_prepare+0x132/0x140
[<0>] syscall_exit_to_user_mode+0x1d/0x50
[<0>] do_syscall_64+0x46/0x90
[<0>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
   PID TTY      STAT   TIME COMMAND
cat: /proc/5266/stack: Filen eller katalogen finns inte


-- 
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- Joel Parthemore - philosopher - academic proofreader --------
- English teacher - technology instructor - editor ------------
- "We are all in the gutter, but some of us are looking at the-
- "stars." - Oscar Wilde --------------------------------------
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