Date: Mon, 21 Sep 2009 22:40:02 GMT From: Nathaniel W Filardo <nwf@cs.jhu.edu> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/117688: [mpt] mpt disk timeout and hang Message-ID: <200909212240.n8LMe2xg041009@freefall.freebsd.org>
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The following reply was made to PR kern/117688; it has been noted by GNATS. From: Nathaniel W Filardo <nwf@cs.jhu.edu> To: bug-followup@freebsd.org Cc: Subject: Re: kern/117688: [mpt] mpt disk timeout and hang Date: Mon, 21 Sep 2009 18:31:44 -0400 --zL7g4HaX89HhN13a Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Acting on unrelated advice and a hunch, I have run "camcontrol tags $DISK -N 16" on each of the disks attached to my mpt and have not yet suffered a recurrence. When I had set tags to 24, the system was stable for a week or so but did ultimately succumb to this infinite loop of request cancellations. camcontrol thinks that all the disks report that they can use up to 255 tags. Does that perhaps shed some light on the matter for somebody more qualified than yours truly? --nwf; --zL7g4HaX89HhN13a Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkq3/tAACgkQTeQabvr9Tc9/6QCfXZX593Hc32+KEZcB2IbTbqDm o58An3P6qvKIp7c064VnLtuwcGEVioGz =J7P1 -----END PGP SIGNATURE----- --zL7g4HaX89HhN13a--
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