Date: Fri, 5 Nov 2021 15:05:25 -0400 From: Chris Ross <cross+freebsd@distal.com> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS operations hanging, but no visible errors? Message-ID: <33253C33-9A8D-403B-A7E9-C511EA4ED34A@distal.com> In-Reply-To: <0AABEDF8-665F-465F-9792-0B0BE6CAE97F@distal.com> References: <B28E52F4-F475-4CF6-BE0C-F5C803AD5757@distal.com> <20211105173935.7aa53269@fabiankeil.de> <86999084-7007-4F08-A4C4-4A835A7E1C78@distal.com> <CAOeNLur6Db=vcwMS_0Tmwdim6JGFX-0sYLd=hOjgZzBLBEm4fQ@mail.gmail.com> <0AABEDF8-665F-465F-9792-0B0BE6CAE97F@distal.com>
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> On Nov 5, 2021, at 13:12, Chris Ross <cross+freebsd@distal.com> wrote:
>=20
> Okay. Despite everything I had running being stuck I was able to log =
into the console, and coincidentally or not, things have now recovered. =
Well, the old commands/sessions didn=E2=80=99t, but I can log in again. =
I can=E2=80=99t get to the tmux session it seems, but.
>=20
> I=E2=80=99m able to run that sysctl, which has a lot of data. The =
last records all about two hours ago are:
>=20
> 1636125429 metaslab.c:2538:metaslab_unload(): metaslab_unload: txg =
1033689, spa tank, vdev_id 1, ms_id 854, weight 780000000000001, =
selected txg 1033574 (601067 ms ago), alloc_txg 1033313, loaded 5902891 =
ms ago, max_size 2147475456
> 1636125429 metaslab.c:2538:metaslab_unload(): metaslab_unload: txg =
1033689, spa tank, vdev_id 2, ms_id 88, weight 880000000000001, selected =
txg 1033574 (601067 ms ago), alloc_txg 1020497, loaded 864138 ms ago, =
max_size 17179869184
> 1636125429 metaslab.c:2538:metaslab_unload(): metaslab_unload: txg =
1033689, spa tank, vdev_id 1, ms_id 859, weight 780000000000001, =
selected txg 1033574 (601067 ms ago), alloc_txg 1033029, loaded 2201252 =
ms ago, max_size 2147475456
> 1636125429 metaslab.c:2538:metaslab_unload(): metaslab_unload: txg =
1033689, spa tank, vdev_id 1, ms_id 860, weight 780000000000001, =
selected txg 1033574 (601067 ms ago), alloc_txg 1033229, loaded 3395548 =
ms ago, max_size 2147303424
> 1636125429 metaslab.c:2538:metaslab_unload(): metaslab_unload: txg =
1033689, spa tank, vdev_id 1, ms_id 863, weight 7c0000000000001, =
selected txg 1033574 (601067 ms ago), alloc_txg 1033448, loaded 4046753 =
ms ago, max_size 4294926336
>=20
> Not sure if that helps=E2=80=A6.
Okay. Following up just to close out the =E2=80=9Cactive=E2=80=9D state =
of the issue. It
became unresponsive again moments after the above. The kernel
was functional, as I was able to switch to multiple virtual consoles,
but logging in only yielded a =E2=80=9CLast login=E2=80=9D line, then =
nothing else.
C/R=E2=80=99s were echoed on consoles, but nothing else happened.
I issued a Ctrl-Alt-Delete, and it began stopping things, failed the 90
second watchdog timer and noted terminating shutdown abnormally.
The kernel did eventually report =E2=80=9CAll buffers synced.=E2=80=9D =
then nothing else.
After about 10 minutes, I tried Ctrl-Alt-Delete again, and then =
power-cycled
the box.
I=E2=80=99d still be interested in hearing any theories about what =
happened, but
I no longer have the device in this state to test.
- Chris=
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