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From: Joakim Henriksson <murduth@ludd.luth.se>
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Subject: SCSI reset broken.
To: bugs@freebsd.org
Date: Mon, 5 Feb 1996 13:36:01 +0100 (MET)
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>Submitter-Id:   current-user
>Originator:     Joakim Henriksson
>Organization:   Ludd
>Confidential:   no
>Synopsis:       SCSI reset hangs entire scsi bus
>Severity:       serious
>Priority:       medium
>Category:       kernel
>Release:        FreeBSD 2.1-STABLE i386
>Class:          sw-bug
>Environment:

NCR 810 SCSI
SCSI disk
SCSI cdrom
SCSI streamer

but also on...
AHA 2940
SCSI disk
SCSI disks (3 IBM AS/400 disks with 520b/sector :) )

>Description:

After using the streamer the bus gets a timeout from the device when it starts
to rewind the tape and thus tries to reset the scsi bus, which is bad since it
then loses contact with all devices. Causing my system to not work since swap
and all lies on scsi disk :(

>How-To-Repat

echo "reset" | cdplay cd0
or to use a device that is slow :)

>Fix:

None that i know of... Possibly longer timeout values on devicetimeout and
scsi reset...


regards/ Joakim