Re: Debbuging a hung filesystem

On Fri Jan 30, 2026 at 2:52 AM UTC, H. Hartzer wrote:
> Hi misc@,
>
> Fully patched 7.8 on amd64.
>
> I'm having some troubles with a filesystem that I have mounted. It's on
> the same disk as everything else. The disk just passed a SMART test.
> There's no dmesg errors. Other partitions seem to be fine.
>
> I just remounted the partition with userquota -- maybe that's related?
>
> Anything like ls /files/more/ will sit and hang in D state.
>
> For example:
>
> root 61851 0.0 0.0 884 424 p3 D+p 2:40AM 0:00.00 ls /files/more/
> root 70837 0.0 0.0 884 428 p4 D+p 2:42AM 0:00.00 ls /files/more/parsnip
>
> # fstat | grep /files/more
> root ksh 25124 3 /files/more 2 drwxr-xr-x rep 512
>
> fstat /files/more hangs as well.
>
> I can't kill or even kill -9 anything in D state, it seems.
>
> This is the partition mount information:
>
> /dev/sd0o on /files/more type ffs (local, noatime, nodev, noexec, nosuid, with quotas, synchronous)
>
> # ps aux | grep D+
> root 25124 0.0 0.0 1688 1088 p0 D+p 2:16AM 0:00.30 -ksh (ksh)
> root 55327 0.0 0.0 1432 1064 p2 D+p 2:40AM 0:00.04 -ksh (ksh)
> root 61851 0.0 0.0 884 424 p3 D+p 2:40AM 0:00.00 ls /files/more/
> root 70837 0.0 0.0 884 428 p4 D+p 2:42AM 0:00.00 ls /files/more/parsnip
> root 2293 0.0 0.0 516 1108 p7 D+ 2:47AM 0:00.01 fstat /files/more
> root 56370 0.0 0.0 120 320 p8 R+/0 2:50AM 0:00.00 grep D+
>
> Not sure where to go from here.
>
> Thanks!
>
> -Henrich

Hi again,

This is still stuck, with nothing new in dmesg. I have tried quotaoff
and umount -f -- all are now hung in D state.

Fortunately, the system is stable, but it would be nice to use this
partition.

-Henrich