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Date:      Thu, 15 Jan 1998 08:09:59 -0600 (CST)
From:      Kevin Day <toasty@home.dragondata.com>
To:        FreeBSD-gnats-submit@FreeBSD.ORG
Subject:   docs/5496: Adding documentation for scsi(8) usage with autoloaders
Message-ID:  <199801151409.IAA19487@home.dragondata.com>

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>Number:         5496
>Category:       docs
>Synopsis:       Adding documentation for scsi(8) usage with autoloaders
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jan 15 06:20:01 PST 1998
>Last-Modified:
>Originator:     Kevin Day
>Organization:
DragonData
>Release:        FreeBSD 2.2.1-RELEASE i386
>Environment:

FreeBSD witha Archive 4586NP DAT autoloader


>Description:

Somewhere in the handbook/FAQ you may want to mention how to use a DAT
autoloader. ch0 appears non-functional with these drives. It detects them,
but sends bad/incorrect commands to it.

Also tested on an HP autoloader (model number unknown) and couldn't get cd0
to grok it.

>How-To-Repeat:

See below.

>Fix:

The following command shows the correct scsi command to load/unload a tape.

x = Source bay
y = Destination bay
	
scsi -f /dev/rst0.ctl -s 100 -c "a5 20 0 0 0 x 0 y 0 0 0 0"

Bay 1 = Tape Drive
Bay 2 = Loader slot 1
Bay 3 = Loader slot 2
Bay n = Loader slot n+1


To load a tape in slot 2 to the drive, the following command works:

scsi -f /dev/rst0.ctl -s 100 -c "a5 20 0 0 0 3 0 1 0 0 0 0"

To eject the tape into slot 4:

scsi -f /dev/rst0.ctl -s 100 -c "a5 20 0 0 0 1 0 5 0 0 0 0"


You do get a bunch of odd errors if you try to load a tape into a bay that's
already got a tape in it, or one that doesn't exist.

Be warned that on the Archive 4586NP attempting to load a tape into position
0 makes the tape drive lockup. (you need to power cycle it to recover)


Kevin
>Audit-Trail:
>Unformatted:
Date:  Mon, 12 Jan 1998 22:08:07 -0600 (CST)
To:  FreeBSD-gnats-submit@freebsd.org
Subject:  Adding documentation for scsi(8) usage with autoloaders
Reply-To:  toasty@home.dragondata.com
X-send-pr-version:  3.2


Kevin Day



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