292 lines
8.2 KiB
Groff
292 lines
8.2 KiB
Groff
.\" $NetBSD: chio.1,v 1.4 1997/10/02 00:41:25 hubertf Exp $
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.\"
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.\" Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgements:
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.\" This product includes software developed by Jason R. Thorpe
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.\" for And Communications, http://www.and.com/
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.\" 4. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 14, 1998
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.Dt CHIO 1
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.Os
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.Sh NAME
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.Nm chio
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.Nd medium changer control utility
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.Sh SYNOPSIS
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.Nm
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.Op Fl f Ar changer
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.Ar command
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.Op Fl <flags>
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.Ar arg1
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.Ar arg2
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.Op Ar arg3 Op ...
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.Sh DESCRIPTION
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.Nm
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is used to control the operation of medium changers, such as those found
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in tape and optical disk jukeboxes.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl f Ar changer
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Use the device
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.Ar changer
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rather than the default device
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.Pa /dev/ch0 .
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.El
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.Pp
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The default changer may be overridden by setting the environment variable
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.Ev CHANGER
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to the desired changer device.
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.Pp
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A medium changer apparatus is made up of
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.Em elements .
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There are five element types:
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.Em picker
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(medium transport),
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.Em slot
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(storage),
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.Em portal
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(import/export),
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.Em drive
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(data transfer), and
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.Em voltag
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(select by volume identifier). The
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.Em voltag
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pseudo-element type allows the selection of tapes by their volume tag
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(typically a barcode on the tape).
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.Pp
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In this command description, the shorthand
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.Em ET
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will be used to represent an element type, and
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.Em EU
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will be used to represent an element unit.
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For example, to represent the first robotic arm in the changer, the
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.Em ET
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would be
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.Dq picker
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and the
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.Em EU
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would be
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.Dq 0 .
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.Sh SUPPORTED COMMANDS
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.Bl -tag -width indent
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.It Ic move Xo
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.Ar <from ET> <from EU> <to ET> <to EU>
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.Op Cm inv
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.Xc
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Move the media unit from
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.Ar <from ET/EU>
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to
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.Ar <to ET/EU> .
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If the optional modifier
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.Cm inv
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is specified, the media unit will be inverted before insertion.
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.It Ic exchange Xo
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.Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
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.Op Ar <dst2 ET> <dst2 ET>
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.Op Cm inv1
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.Op Cm inv2
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.Xc
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Perform a media unit exchange operation. The media unit in
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.Ar <src ET/EU>
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is moved to
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.Ar <dst1 ET/EU>
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and the media unit previously in
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.Ar <dst1 ET/EU>
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is moved to
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.Ar <dst2 ET/EU> .
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In the case of a simple exchange,
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.Ar <dst2 ET/EU>
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is omitted and the values
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.Ar <src ET/EU>
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are used in their place.
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The optional modifiers
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.Cm inv1
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and
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.Cm inv2
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specify whether the media units are to be inverted before insertion into
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.Ar <dst1 ET/EU>
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and
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.Ar <dst2 ET/EU>
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respectively.
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.Pp
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Note that not all medium changers support the
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.Ic exchange
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operation; the changer must have multiple free pickers or emulate
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multiple free pickers with transient storage.
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.It Ic return Xo
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.Ar <from ET> <from EU>
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.Xc
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Return the media unit to its source element.
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This command will query the status of the specified media unit, and
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will move it to the element specified in its source attribute.
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This is a convenient way to return media from a drive or portal
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to its previous element in the changer.
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.Pp
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.It Ic position Xo
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.Ar <to ET> <to EU>
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.Op Cm inv
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.Xc
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Position the picker in front of the element described by
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.Ar <to ET/EU> .
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If the optional modifier
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.Cm inv
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is specified, the media unit will be inverted before insertion.
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.Pp
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Note that not all changers behave as expected when issued this command.
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.It Ic params
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Report the number of slots, drives, pickers, and portals in the changer,
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and which picker unit the changer is currently configured to use.
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.It Ic getpicker
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Report which picker unit the changer is currently configured to use.
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.It Ic setpicker Xo
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.Ar <unit>
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.Xc
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Configure the changer to use picker
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.Ar <unit> .
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.Pp
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.It Ic ielem Xo
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.Op Ar <timeout>
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.Xc
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Perform an
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.Em INITIALIZE ELEMENT STATUS
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operation on the changer. The optional
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.Ar <timeout>
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parameter may be given to specify a timeout in seconds for the
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operations. This may be used if the operation takes unusually long
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because of buggy firmware or the like.
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.It Ic voltag Xo
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.Op Fl fca
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.Ar <ET>
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.Ar <EU>
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.Op Ar <label>
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.Op Ar <serial>
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.Xc
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Change volume tag for an element in the media changer. This command
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is only supported by few media changers. If it is not supported by a
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device, using this command will usually result in an "Invalid Field in
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CDB" error message on the console.
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.Pp
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If the
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.Fl c
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flag is specified, the volume tag of the specified element is
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cleared. If the
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.Fl f
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flag is specified, the volume tag is superseded with the specified
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volume tag even if a volume tag is already defined for the element.
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It is an error to not specify the
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.Fl f
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flag when trying to set a label for an element which already has
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volume tag information defined.
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.Pp
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The command works with the primary volume tag or, if the
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.Fl a
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flag is given, with the alternate volume tag.
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.It Ic status Xo
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.Op Fl vVsSbIa
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.Op Ar <type>
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.Xc
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Report the status of all elements in the changer. If
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.Ar <type>
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is specified, report the status of all elements of type
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.Ar <type> .
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.It Fl v
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Print the primary volume tag for each loaded medium, if any. The volume
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tag is printed as
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.Dq <LABEL:SERIAL> .
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.It Fl V
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Print the alternate volume tag for each loaded medium, if any.
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.It Fl s
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Print the additional sense code and additional sense code qualifier for
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each element.
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.It Fl S
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Print the element source address for each element.
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.It Fl b
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Print SCSI bus information for each element. Note that this information
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is valid only for drives.
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.It Fl I
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Print the internal element addresses for each element. The internal
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element address is not normally used with this driver. It is reported
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for diagnostic purposes only.
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.It Fl a
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Print all additional information (as in
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.Fl vVsSba ) .
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.El
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.Pp
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The status bits are defined as follows:
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.Bl -tag -width indent
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.It FULL
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Element contains a media unit.
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.It IMPEXP
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Media was deposited into element by an outside human operator.
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.It EXCEPT
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Element is in an abnormal state.
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.It ACCESS
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Media in this element is accessible by a picker.
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.It EXENAB
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Element supports passing media (exporting) to an outside human operator.
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.It INENAB
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Element supports receiving media (importing) from an outside human operator.
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.El
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.Sh EXAMPLES
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.Bl -tag -width indent
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.It Li chio move slot 3 drive 0
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Move the media in slot 3 (fourth slot) to drive 0 (first drive).
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.It Li chio move voltag VOLUME01 drive 0
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Move the media with the barcode VOLUME01 to drive 0 (first drive).
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.It Li chio return drive 0
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Remove the tape from drive 0 (first drive) and return it to its original
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location in the rack.
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.It Li chio setpicker 2
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Configure the changer to use picker 2 (third picker) for operations.
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.El
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.Sh FILES
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.Bl -tag -width /dev/ch0 -compact
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.It Pa /dev/ch0
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default changer device
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.El
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.Sh SEE ALSO
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.Xr mt 1 ,
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.Xr mount 8
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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program and SCSI changer driver were written by
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.An Jason R. Thorpe Aq thorpej@and.com
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for And Communications,
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.Pa http://www.and.com/ .
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.Pp
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Additional work by
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.An Hans Huebner
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.Aq hans@artcom.de
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and
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.An Steve Gunn
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.Aq csg@waterspout.com .
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