Re: fsck_ufs after every reboot

2008/11/12, Jeremy Chadwick <koitsu_at_freebsd.org>:
> On Wed, Nov 12, 2008 at 04:44:52PM +0100, Attilio Rao wrote:
>  > 2008/11/12, Jeremy Chadwick <koitsu_at_freebsd.org>:
>  > > On Wed, Nov 12, 2008 at 02:44:05PM +0000, O. Hartmann wrote:
>  > >  > I run FreeBSD 8.0/AMD64 on two boxes (one is a UP older AMD64 Athlon64
>  > >  > 3500, other an 8-Core Dell Poweredge 1950).
>  > >  >
>  > >  > After nearly every reboot the box does fsck on all UFS2 filesystems. In
>  > >  > most cases, while shuting down, the box reports about not willing to die
>  > >  > processes and after a reboot, the filesystems are unclean.
>  > >  >
>  > >  > Is this a common problem at the moment or special?
>  > >
>  > >
>  > > I've seen this happen on my CURRENT box at home when using "shutdown -p
>  > >  now".  Instead of the box powering off, it would lock up near the very
>  > >  end of the shutdown process (before marking the filesystems clean).
>  > >
>  > >  Oddly, this works fine in RELENG_7, so I'm guessing there's some ACPI
>  > >  development going on (I can't complain, it *is* CURRENT).
>  >
>  > This could cames after my VFS works.
>  > Could you spend some time on this?
>  > I will tell you what to look at.
>
>
> Sure thing!
>
>  Let me know what I need to do to help, what information you need, or if
>  I should revert some commits to see if the behaviour changes.  Build
>  date of the box (src-all csup'd about 45 minutes prior to the build
>  date):
>
>  FreeBSD icarus.home.lan 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Fri Nov  7 14:19:03 PST 2008     root_at_icarus.home.lan:/usr/obj/usr/src/sys/X7SBA_CURRENT_amd64  amd64

Is this reproducible?
I need you build a kernel with following options:
INVARIANT_SUPPORT
INVARIANTS
DEBUG_VFS_LOCKS
WITNESS
and without WITNESS_SKIPSPIN

once it hangs you have to break in DDB and look the state of the threads with:
db> ps

This would be a start.
Other instructions will follow based on this result.

Thanks,
Attilio


-- 
Peace can only be achieved by understanding - A. Einstein