Date: Sun, 8 Oct 2006 12:58:23 -0400 From: Kris Kennaway <kris@obsecurity.org> To: "R. B. Riddick" <arne_woerner@yahoo.com> Cc: freebsd-fs@freebsd.org Subject: Re: 2 bonnies can stop disk activity permanently Message-ID: <20061008165823.GA2061@xor.obsecurity.org> In-Reply-To: <20061008152213.59247.qmail@web30307.mail.mud.yahoo.com> References: <20061008152213.59247.qmail@web30307.mail.mud.yahoo.com>
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--oyUTqETQ0mS9luUI Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 08, 2006 at 08:22:13AM -0700, R. B. Riddick wrote: > Hi! >=20 > We (me and Veronica) mentioned, that starting 2 bonnie (ports/bench) proc= esses on a UFS > 1. on a geom_bsd, geom_disk (like ad4 or da0) and geom_stripe (using ad4a= , ..., ad10a) > 2. with different controllers areca and nVidia and different motherboards= and > 3. with up to 8 SATA disks > results in a permanently disk-dead system. >=20 >=20 > Veronica's box had more than 700MB of free memory (according to top), whe= n it happened. >=20 > Heavy load (caused by blogbench, rawio, raidtest and dd) causes no proble= m, while bonnie gets stuck somewhere between putc phase and end of rewrite = phase. >=20 > The bonnie processes were blocked due to "nbufkv" (some VFS reason). > Geom activity is impossible then (no file system activity happens). > No syslog message can be seen on the console. You forgot to even mention what version you're running ;-) Also show your kernel config file. Configure DDB per the chapter on kernel debugging in the developers handbook, break to DDB from the console or serial console, then show us what processes are running and what are their backtraces. Kris --oyUTqETQ0mS9luUI Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFKS4uWry0BWjoQKURAnd2AKDmi5t4q69iCzZxaIWKz37ve9LX9ACg/tvb KyJ0BYVUNgjVdPZU7SGQebc= =ByF9 -----END PGP SIGNATURE----- --oyUTqETQ0mS9luUI--
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