From owner-freebsd-questions Thu Jan 4 04:52:57 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id EAA03471 for questions-outgoing; Thu, 4 Jan 1996 04:52:57 -0800 (PST) Received: from hda.com (hda.com [199.232.40.182]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id EAA03466 for ; Thu, 4 Jan 1996 04:52:53 -0800 (PST) Received: (from dufault@localhost) by hda.com (8.6.11/8.6.9) id HAA07040; Thu, 4 Jan 1996 07:52:57 -0500 From: Peter Dufault Message-Id: <199601041252.HAA07040@hda.com> Subject: Re: SCSI bus/device timeouts on AHA-1542b To: obrien@cs.ucdavis.edu (David E. O'Brien) Date: Thu, 4 Jan 1996 07:52:57 -0500 (EST) Cc: freebsd-questions@freebsd.org In-Reply-To: <9601041020.AA14216@toadflax.cs.ucdavis.edu> from "David E. O'Brien" at Jan 4, 96 02:20:32 am X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-questions@freebsd.org Precedence: bulk These kinds of errors are typical of something wedging the SCSI bus and hanging the controller. As always, "SCSI bus integrity". Be sure that only the first and last devices are terminated, that you have the appropriate cables, and that someone is supplying terminator power. > After hard useage (heavy cp'ing/tar'ing), I get: > > Jan 3 02:56:35 foobar /kernel: sd0(aha0:0:0): timed out A disk transfer timed out. The 1542B light is probably on solid, and the firmware is hung. > Jan 3 02:56:35 foobar /kernel: adapter not taking commands.. frozen?! The 1542 won't talk. > Jan 3 02:56:35 foobar /kernel: Debugger("aha1542") called. If "ddb" were configured you'd be in ddb now. > Jan 3 02:56:35 foobar /kernel: AGAIN The host adapter transaction timed out again... > Jan 3 02:56:35 foobar /kernel: aha0: MBO 02 and not 00 (free) And the command mailbox is not free. It is still the 02 put there to try to abort the transaction. > Jan 3 02:56:45 foobar /kernel: sd0(aha0:0:0): timed out > Jan 3 02:56:45 foobar /kernel: adapter not taking commands.. frozen?! > Jan 3 02:56:45 foobar /kernel: Debugger("aha1542") called. If this isn't the cables, then maybe there is a new firmware rev for something? -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267