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Date:      Tue, 15 Apr 1997 20:56:44 -0400 (EDT)
From:      Dale Ghent <daleg@bigdog.fred.net>
To:        freebsd-scsi@freebsd.org
Subject:   Major 2940UW and 2.2.1 problems...
Message-ID:  <Pine.GSO.3.94.970415204808.15331A-100000@bigdog.fred.net>

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I recently upgraded from 2.1.5-RELEASE to 2.2.1, and have been running
into some major and fatal SCSI problems.

I'mm running a heavily-loaded machine (news) that has 3 2940UW controllers
in it. After upgrading to 2.2.1 the machine has become quite unstable. The
machine would reboot itself with no warning at all. A check in
/var/log/messages shows this error right before reboot:

Apr 15 19:21:40 news /kernel: sd4(ahc1:5:0): SCB 0x2 - timed out while
idle, LASTPHASE == 0x1, SCSISIGI == 0x0
Apr 15 19:21:40 news /kernel: SEQADDR == 0x5
Apr 15 19:21:40 news /kernel: Ordered Tag queued
Apr 15 19:21:40 news /kernel: sd4(ahc1:5:0): SCB 0x7 timedout while
recovery in progress
Apr 15 19:21:41 news /kernel: sd4(ahc1:5:0): SCB 0x2 - timed out while
idle, LASTPHASE == 0x1, SCSISIGI == 0x0
Apr 15 19:21:41 news /kernel: SEQADDR == 0x7
Apr 15 19:21:41 news /kernel: sd4(ahc1:5:0): Queueing an Abort SCB
Apr 15 19:21:41 news /kernel: sd4(ahc1:5:0): Abort Message Sent
Apr 15 19:21:41 news /kernel: sd4(ahc1:5:0): SCB 0 - Abort Completed.
Apr 15 19:21:41 news /kernel: sd4(ahc1:5:0): no longer in timeout
Apr 15 19:21:41 news /kernel: Ordered Tag sent
Apr 15 19:21:50 news /kernel: sd4(ahc1:5:0): SCB 0x5 - timed out in
message out phase, SCSISIGI == 0x0
Apr 15 19:21:50 news /kernel: SEQADDR == 0x0
Apr 15 19:21:50 news /kernel: Ordered Tag queued
Apr 15 19:21:50 news /kernel: sd4(ahc1:5:0): SCB 0x4 timedout while
recovery in progress
 
Please, please let there be a solution for this. This crashes the machine
about 6 times a day and its really bad. This error always happens on the
same controller and with the same drive. I've double-checked termination
and cables, and replaced them, but no luck. Any ideas?

		Thanks
		Dale




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