I have a RELENG_9 machine that hangs when a snapshot is created on the
root fs (UFS, with SU+J). More accurately, all the processes show a
state of "suspfs" (with ^T) and no fs activity is completed from then
on. A hard reboot (power cycle) was the only way to proceed.
Here's some reference info - let me know what else I should provide.
$uname -a
FreeBSD xxx.xxx.net 9.0-PRERELEASE FreeBSD 9.0-PRERELEASE #0: Sun Dec
25 05:04:37 UTC 2011 r...@xxx.xxx.net:/usr/obj/usr/src/sys/GENERIC
amd64
csup was run just before build[world|kernel] so you have reference on
the version information.
$mount
/dev/gpt/root on / (ufs, local, journaled soft-updates)
devfs on /dev (devfs, local, multilabel)
linprocfs on /compat/linux/proc (linprocfs, local)
{ zfs info removed }
$df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/gpt/root 454G 9.1G 409G 2% /
devfs 1.0k 1.0k 0B 100% /dev
linprocfs 4.0k 4.0k 0B 100% /compat/linux/proc
{ zfs info removed }
After the hard reset, there was a snapshot file listed in /.snap and
it was ~465 GB, iirc. Unfortunately, I needed to get things going
again so I was not able to debug or diagnose further. I may be able
to schedule a time that I could recreate the issue and diagnose
better, but I wanted to get your input on what data points and/or
command you would be interested in.
Thanks in advance,
Bryce
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