Date: Mon, 23 Apr 2007 14:39:12 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: Adrian Wontroba <aw1@stade.co.uk>, freebsd-stable@freebsd.org Subject: Re: 6.2-STABLE deadlock? Message-ID: <20070423113912.GE2052@deviant.kiev.zoral.com.ua> In-Reply-To: <20070423025631.GA33256@steerpike.hanley.stade.co.uk> References: <20070313140848.GA89182@steerpike.hanley.stade.co.uk> <20070423025631.GA33256@steerpike.hanley.stade.co.uk>
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--qGV0fN9tzfkG3CxV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Apr 23, 2007 at 03:56:32AM +0100, Adrian Wontroba wrote: > On Tue, Mar 13, 2007 at 02:08:48PM +0000, Adrian Wontroba wrote: > > At work, amoungst my stable of old computers running FreeBSD, I have a > > Fujitsu M800 - a 4 Zeon SMP processor with 4 GB of memory. This > > primarily runs Nagios and a small and lightly used MySQL database, along > > with a few inbound FTP transfers per minute. It has a Mylex card based > > disc subsystem, ruling out crash dumps. > >=20 > > At some point during 5.5-STABLE this machine started to occasionally ha= ng ... >=20 > Another 6-STABLE (cvsupped on 27/03/07) example, with diagnostics taken > rather sooner after the hang. Processes with wmesg=3Dufs feature often in > the ps output. >=20 > http://www.stade.co.uk/crash1/ I would suspect the mlx controller. There is several processes (for instanc= e, 988, 50918) waiting for completion of block read, and processes in the "ufs" states are the result of the lock cascade, IMHO. --qGV0fN9tzfkG3CxV Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGLJrfC3+MBN1Mb4gRAlcwAJ9EZqXTjnG+rLDT3sL+cwCBOu7U5wCgjDiR BrFP7skHeMsblBTPmWz0F7Q= =mlER -----END PGP SIGNATURE----- --qGV0fN9tzfkG3CxV--
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