From owner-freebsd-scsi@FreeBSD.ORG Wed Aug 6 08:10:17 2003 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 46A6037B401; Wed, 6 Aug 2003 08:10:17 -0700 (PDT) Received: from mail.sandvine.com (sandvine.com [199.243.201.138]) by mx1.FreeBSD.org (Postfix) with ESMTP id 395A943FA3; Wed, 6 Aug 2003 08:10:16 -0700 (PDT) (envelope-from don@sandvine.com) Received: by mail.sandvine.com with Internet Mail Service (5.5.2653.19) id <305LHM7Q>; Wed, 6 Aug 2003 11:10:15 -0400 Message-ID: From: Don Bowman To: "'Justin T. Gibbs'" , Don Bowman , "'freebsd-scsi@freebsd.org'" , "'aic7xxx@freebsd.org'" Date: Wed, 6 Aug 2003 11:10:08 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Subject: RE: Ongoing U320 AIC7902 Seagate ST318453LW issues, SCB timed out X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Aug 2003 15:10:17 -0000 > From: Justin T. Gibbs [mailto:gibbs@scsiguy.com] > > I'm continuing to test without the throttle. I'm @ a loss for why > > it tracks some systems and not others. > > > > There doesn't seem to be a reliable way to drop the number of > > tags since the system may not always come up. I don't think > > there's an option in the kernel to do so. > > Just add a call to camcontrol early in the rc process, prior to > fsck starting up. camcontrol is on the root filesystem. You can > also modify the ahd driver to tell cam that it can only handle 32 > commands per-target. Sadly under some circumstances, the system will not get to the point of loading files from the hard disk. The kernel loads (since the bios loads its), but the rc files don't. This is rare, perhaps 1 reboot in 300-400. But i've got an awful lot of these in my lab :) I will try your patch.