From owner-freebsd-scsi Mon Apr 13 06:21:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA22229 for freebsd-scsi-outgoing; Mon, 13 Apr 1998 06:21:05 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from narnia.plutotech.com (narnia.plutotech.com [206.168.67.130]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA22223 for ; Mon, 13 Apr 1998 13:20:59 GMT (envelope-from gibbs@narnia.plutotech.com) Received: (from gibbs@localhost) by narnia.plutotech.com (8.8.8/8.7.3) id HAA19663; Mon, 13 Apr 1998 07:17:05 -0600 (MDT) Date: Mon, 13 Apr 1998 07:17:05 -0600 (MDT) From: "Justin T. Gibbs" Message-Id: <199804131317.HAA19663@narnia.plutotech.com> To: Mark Murray cc: scsi@FreeBSD.ORG Subject: Re: SCBtimeouts with CAM and AIC7880 Newsgroups: pluto.freebsd.scsi In-Reply-To: <199804131000.MAA07754@greenpeace.grondar.za> User-Agent: tin/pre-1.4-971204 (UNIX) (FreeBSD/3.0-CURRENT (i386)) Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In article <199804131000.MAA07754@greenpeace.grondar.za> you wrote: > Hi > > I have a GA586DX with 2xP5/200's and an on-board AIC7880. I have been > running CAM for the last month or so, and it is a LOT more stable than > the previous code, but there is a problem with SCB's. > > If I stress the disks too much, I start getting the message > "Timedout SCB handled by another timeout" (from aic7xxx.c). > This message repeats itself ad nauseam at about 5-10-sec intervals, and > the machine is unuseable. A reset is necessary to get it going again. > > Any clues? Could this be a race condition in the SMP case? It could be an SMP problem, but I don't know for sure. Is the "Timedout SCB handled by another timeout" message how the whole cycle starts or does some other message occur first? -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message