fsck_ufs after every reboot
Attilio Rao
attilio at freebsd.org
Wed Nov 12 11:29:14 PST 2008
2008/11/12, Jeremy Chadwick <koitsu at freebsd.org>:
> On Wed, Nov 12, 2008 at 05:20:56PM +0100, Attilio Rao wrote:
> > 2008/11/12, Jeremy Chadwick <koitsu at freebsd.org>:
> > > On Wed, Nov 12, 2008 at 04:52:59PM +0100, Attilio Rao wrote:
> > > > 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 don't have an answer at this time. I've only performed "shutdown -p
> > > now" on this box twice since running CURRENT, and both times the problem
> > > described occurred.
> > >
> > >
> > > > I need you build a kernel with following options:
> > > > INVARIANT_SUPPORT
> > > > INVARIANTS
> > > > DEBUG_VFS_LOCKS
> > > > WITNESS
> > > > and without WITNESS_SKIPSPIN
> > >
> > >
> > > Will do. Relevant options I use:
> > >
> > > makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
> > > options SCHED_ULE # ULE scheduler
> > > options PREEMPTION # Enable kernel thread preemption
> > > options BREAK_TO_DEBUGGER # Sending a serial BREAK drops to DDB
> > > options KDB # Enable kernel debugger support
> > > options KDB_TRACE # Print stack trace automatically on panic
> > > options DDB # Support DDB
> > > options GDB # Support remote GDB
> > > options INVARIANTS # Enable calls of extra sanity checking
> > > options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
> > > options WITNESS # Enable checks to detect deadlocks and cycles
> > > options DEBUG_VFS_LOCKS # vfs lock debugging
> > >
> > > I have physical access to the console of this machine on a regular
> > > basis.
> >
> > It's fine, great.
>
>
> And as luck would have it, I can't reproduce the problem any more. I've
> shutdown -p now'd literally 6 times in a row without any sort of lock
> up, and this is running on the old kernel. The same behaviour is now
> seen with the new kernel.
>
> So, the 2-3 times I've seen "shutdown -p now" not fully power off the
> machine were either flukes, or who knows what/why.
>
> I simply can't reproduce the problem any longer. I'm sorry.
Can you recompile your kernel with the old option (read: not use the
old kernel, but recompile it with the old options) and see if it
hangs?
Did you update the sources in the while?
Thanks,
Attilio
--
Peace can only be achieved by understanding - A. Einstein
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