Date: Tue, 16 Apr 2002 02:04:45 -0500 From: Greg Panula <greg.panula@dolaninformation.com> To: Pete French <pfrench@firstcallgroup.co.uk> Cc: stable@freebsd.org Subject: Re: SMP problems with latest SUP and SCSi drives Message-ID: <3CBBCD0D.F6F0E8A2@dolaninformation.com> References: <E16w4rP-000Klk-00@mailhost.firstcallgroup.co.uk>
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Howdy, Maybe this two-part article will help: Part 1: http://www.onlamp.com/pub/a/bsd/2002/03/21/Big_Scary_Daemons.html Part 2: http://www.onlamp.com/pub/a/bsd/2002/04/04/Big_Scary_Daemons.html It covers building/using a debugging kernel and then recovering useful information from the dump after a panic. Other things to try would be manually setting the IRQ of the scsi controller. I have two proliants(an older one using Pentium Pros and a newer one using pentium 3s) and they both use the ida driver for their on-board scsi(compaq smart raid). Good Luck, Greg Pete French wrote: > > A few days ago I posted a problem with a SCSi bus on a stable machine > allegedly being reset according to the messages from the kernel. I > have now had time to track this down and ensure it isnt a hardware fault > > The symptoms are as follows: > > copy a set of files (e.g.): > > cp src/cgi-bin/**.exe > > copy a set of files (e.g.): > > cp src/cgi-bin/*.exe /usr/local/www/beta/cgi-bin > > the reopeat the command to a different directory > > cp src/cgi-bin/*.exe /usr/local/www/live/cgi-bin > > and the disc freezes - if left long enough it usually generates an > error of the form "sym0:(0,-1,-1) scsi bus reset detected".... hats from > memory as I dont have the log to hand. note that the copy involves moving > files from ne disc to another - both discs being on the same scsi bus. > > I have, however, acertained that this *only* happens when the machine is > running an SMP kernel. With a non SMP kernel it is fine. With an older > version of -STABLE it is also fine (frustratingly I no longer have the > date of that older kernel, but we are talking post 4.5_RELEASE). > > The system is a Compaq Proliant and I am using the onboard SCSI controller. > Its has 256 meg of memoiry and a pair of 9.1GB drives attached to sym0. > tthe dmesg was posted in the previous email ont eh subject (along with > the sym0 timeout message) > > help! obviously something is going on here under SMP that isnt happening > on a single porcessor box. How can I set about generating more information > to help track this bug down ? > > thanks for any assistance, > > -pcf. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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