Re: disk freeze?

On Fri, Apr 22, 2005 at 03:33:37PM -1000, Randy Bush wrote:
> FreeBSD foo.bar.org 6.0-CURRENT FreeBSD 6.0-CURRENT #22: Thu Apr 21 19:09:22 GMT 2005     root_at_foo.bar.org:/usr/obj/usr/src/sys/FOO  i386
> 
> locks up where it will echo typing on console or ssh, but hit CR and that
> session locks.  i.e. probably some locked disk issue
> 
> did manage to get a reboot command in
> 
> Syncing disks, vnodes remaining...2 2 ipfw: pullup failed
> 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 timed out
> Syncing disks, buffers remaining... 24 24 24 24 24 24 24 1 24 24 1 24 24 24 1 24 1 24 24 1 24 1 24 1 24 24 1 24 1 
> Giving up on 24 buffers
> Uptime: 1d5h8m13s
> Shutting down ACPI
> Rebooting...

This seems to be my week for "me,too" ing Randy, but I'm seeing similar
hard lockups.  The machine locks to the point where it won't hear the
soft power switch - I have to yank the plug out to reboot it. 

Needless to say, this is really annoying.

I did come in this morning, cvsup a new kernel and make & install it (no
lockups yet, but it's only been running a few minutes).  When I rebooted
after make kernel, I got a lockup on reboot (!) and a message indicating
that one thread was not a sole owner of a lock.  (Sorry, I didn't copy
the text verbatim). And again a hard lock up to the pull the plug out of
the machine stage, though there was a panic and an attempt to rebbot
the machine.

It seems to happen more frequently on my desktop which NFS mounts most
of its filesystems (with -L).

All kinds of configs, etc, available on request.  I'm not set up for
dumps or debugging, but I can get set up if it helps.

-- 
Ted Faber
http://www.isi.edu/~faber           PGP: http://www.isi.edu/~faber/pubkeys.asc
Unexpected attachment on this mail? See http://www.isi.edu/~faber/FAQ.html#SIG