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Date:      Tue, 18 Dec 2001 15:46:18 +0000
From:      Josef Karthauser <joe@tao.org.uk>
To:        Matthew Dillon <dillon@apollo.backplane.com>
Cc:        Martin Blapp <mb@imp.ch>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: deadlock with softupdates ?
Message-ID:  <20011218154618.B645@tao.org.uk>
In-Reply-To: <20011218105527.A708@tao.org.uk>; from joe@tao.org.uk on Tue, Dec 18, 2001 at 10:55:27AM %2B0000
References:  <20011217223123.P59342-100000@levais.imp.ch> <200112172141.fBHLfSc33112@apollo.backplane.com> <20011218105527.A708@tao.org.uk>

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On Tue, Dec 18, 2001 at 10:55:27AM +0000, Josef Karthauser wrote:
> On Mon, Dec 17, 2001 at 01:41:28PM -0800, Matthew Dillon wrote:
> >     If it is a vnode deadlock you have to find which process or
> >     processes it is deadlocking against.
> >=20
> >     Do a ps -axl -M vmcore.X -N kernel.X  on the kernel core,
> >     pick out all the processes blocked on inode or whatever,
> >     then from gdb go to each process (proc N) and do a backtrace
> >     (back).
>=20
> I've a similar problem with -current from recent (within the last week
> or two).
>=20
> genius# ps -axl -M vmcore.15 -N kernel.15=20
> (attached file)
>=20
> The back traces for the processes locked in inode is also attached.
>=20
> Being green to debugging this kind of thing what should I do next?

Maybe it's the maxusers 0 code.  I saw your recent commit to work around
not using the new config.  I've rebuilt my kernel from scratch, clean.
If it happens again I'll let you know.

Joe

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