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1 .\" $NetBSD: chio.1,v 1.4 1997/10/02 00:41:25 hubertf Exp $
2 .\"
3 .\" Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
4 .\" All rights reserved.
5 .\"
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
8 .\" are met:
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. All advertising materials mentioning features or use of this software
15 .\" must display the following acknowledgements:
16 .\" This product includes software developed by Jason R. Thorpe
17 .\" for And Communications, http://www.and.com/
18 .\" 4. The name of the author may not be used to endorse or promote products
19 .\" derived from this software without specific prior written permission.
20 .\"
21 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 .\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 .\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 .\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 .\" SUCH DAMAGE.
32 .\"
33 .\" $FreeBSD: src/bin/chio/chio.1,v 1.10.2.8 2003/05/16 22:43:15 keramida Exp $
34 .\"
35 .Dd August 22, 2016
36 .Dt CHIO 1
37 .Os
38 .Sh NAME
39 .Nm chio
40 .Nd medium changer control utility
41 .Sh SYNOPSIS
42 .Nm
43 .Op Fl f Ar changer
44 .Ar command
45 .Op Fl <flags>
46 .Ar arg1
47 .Ar arg2
48 .Op Ar arg3 Op ...
49 .Sh DESCRIPTION
50 The
51 .Nm
52 utility is used to control the operation of medium changers, such as those
53 found in tape and optical disk jukeboxes.
54 .Pp
55 The options are as follows:
56 .Bl -tag -width indent
57 .It Fl f Ar changer
58 Use the device
59 .Ar changer
60 rather than the default device
61 .Pa /dev/ch0 .
62 .El
63 .Pp
64 The default changer may be overridden by setting the environment variable
65 .Ev CHANGER
66 to the desired changer device.
67 .Pp
68 A medium changer apparatus is made up of
69 .Em elements .
70 There are five element types:
71 .Em picker
72 (medium transport),
73 .Em slot
74 (storage),
75 .Em portal
76 (import/export),
77 .Em drive
78 (data transfer), and
79 .Em voltag
80 (select by volume identifier). The
81 .Em voltag
82 pseudo-element type allows the selection of tapes by their volume tag
83 (typically a barcode on the tape).
84 .Pp
85 In this command description, the shorthand
86 .Em ET
87 will be used to represent an element type, and
88 .Em EU
89 will be used to represent an element unit.
90 For example, to represent the first robotic arm in the changer, the
91 .Em ET
92 would be
93 .Dq picker
94 and the
95 .Em EU
96 would be
97 .Dq 0 .
98 .Sh SUPPORTED COMMANDS
99 .Bl -tag -width indent
100 .It Ic move Xo
101 .Ar <from ET> <from EU> <to ET> <to EU>
102 .Op Cm inv
103 .Xc
104 Move the media unit from
105 .Ar <from ET/EU>
106 to
107 .Ar <to ET/EU> .
108 If the optional modifier
109 .Cm inv
110 is specified, the media unit will be inverted before insertion.
111 .It Ic exchange Xo
112 .Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
113 .Op Ar <dst2 ET> <dst2 ET>
114 .Op Cm inv1
115 .Op Cm inv2
116 .Xc
117 Perform a media unit exchange operation. The media unit in
118 .Ar <src ET/EU>
119 is moved to
120 .Ar <dst1 ET/EU>
121 and the media unit previously in
122 .Ar <dst1 ET/EU>
123 is moved to
124 .Ar <dst2 ET/EU> .
125 In the case of a simple exchange,
126 .Ar <dst2 ET/EU>
127 is omitted and the values
128 .Ar <src ET/EU>
129 are used in their place.
130 The optional modifiers
131 .Cm inv1
132 and
133 .Cm inv2
134 specify whether the media units are to be inverted before insertion into
135 .Ar <dst1 ET/EU>
136 and
137 .Ar <dst2 ET/EU>
138 respectively.
139 .Pp
140 Note that not all medium changers support the
141 .Ic exchange
142 operation; the changer must have multiple free pickers or emulate
143 multiple free pickers with transient storage.
144 .It Ic return Xo
145 .Ar <from ET> <from EU>
146 .Xc
147 Return the media unit to its source element.
148 This command will query the status of the specified media unit, and
149 will move it to the element specified in its source attribute.
150 This is a convenient way to return media from a drive or portal
151 to its previous element in the changer.
152 .It Ic position Xo
153 .Ar <to ET> <to EU>
154 .Op Cm inv
155 .Xc
156 Position the picker in front of the element described by
157 .Ar <to ET/EU> .
158 If the optional modifier
159 .Cm inv
160 is specified, the media unit will be inverted before insertion.
161 .Pp
162 Note that not all changers behave as expected when issued this command.
163 .It Ic params
164 Report the number of slots, drives, pickers, and portals in the changer,
165 and which picker unit the changer is currently configured to use.
166 .It Ic getpicker
167 Report which picker unit the changer is currently configured to use.
168 .It Ic setpicker Xo
169 .Ar <unit>
170 .Xc
171 Configure the changer to use picker
172 .Ar <unit> .
173 .It Ic ielem Xo
174 .Op Ar <timeout>
175 .Xc
176 Perform an
177 .Em INITIALIZE ELEMENT STATUS
178 operation on the changer. The optional
179 .Ar <timeout>
180 parameter may be given to specify a timeout in seconds for the
181 operations. This may be used if the operation takes unusually long
182 because of buggy firmware or the like.
183 .It Ic voltag Xo
184 .Op Fl fca
185 .Ar <ET>
186 .Ar <EU>
187 .Op Ar <label>
188 .Op Ar <serial>
189 .Xc
190 Change volume tag for an element in the media changer. This command
191 is only supported by few media changers. If it is not supported by a
192 device, using this command will usually result in an
193 .Dq Invalid Field in CDB
194 error message on the console.
195 .Pp
196 If the
197 .Fl c
198 flag is specified, the volume tag of the specified element is
199 cleared. If the
200 .Fl f
201 flag is specified, the volume tag is superseded with the specified
202 volume tag even if a volume tag is already defined for the element.
203 It is an error to not specify the
204 .Fl f
205 flag when trying to set a label for an element which already has
206 volume tag information defined.
207 .Pp
208 The command works with the primary volume tag or, if the
209 .Fl a
210 flag is given, with the alternate volume tag.
211 .It Ic status Xo
212 .Op Fl vVsSbIa
213 .Op Ar <type>
214 .Xc
215 Report the status of all elements in the changer. If
216 .Ar <type>
217 is specified, report the status of all elements of type
218 .Ar <type> .
219 .It Fl v
220 Print the primary volume tag for each loaded medium, if any. The volume
221 tag is printed as
222 .Dq <LABEL:SERIAL> .
223 .It Fl V
224 Print the alternate volume tag for each loaded medium, if any.
225 .It Fl s
226 Print the additional sense code and additional sense code qualifier for
227 each element.
228 .It Fl S
229 Print the element source address for each element.
230 .It Fl b
231 Print SCSI bus information for each element. Note that this information
232 is valid only for drives.
233 .It Fl I
234 Print the internal element addresses for each element. The internal
235 element address is not normally used with this driver. It is reported
236 for diagnostic purposes only.
237 .It Fl a
238 Print all additional information (as in
239 .Fl vVsSba ) .
240 .El
241 .Pp
242 The status bits are defined as follows:
243 .Bl -tag -width indent
244 .It FULL
245 Element contains a media unit.
246 .It IMPEXP
247 Media was deposited into element by an outside human operator.
248 .It EXCEPT
249 Element is in an abnormal state.
250 .It ACCESS
251 Media in this element is accessible by a picker.
252 .It EXENAB
253 Element supports passing media (exporting) to an outside human operator.
254 .It INENAB
255 Element supports receiving media (importing) from an outside human operator.
256 .El
257 .Sh FILES
258 .Bl -tag -width /dev/ch0 -compact
259 .It Pa /dev/ch0
260 default changer device
261 .El
262 .Sh EXAMPLES
263 .Bl -tag -width indent
264 .It Li chio move slot 3 drive 0
265 Move the media in slot 3 (fourth slot) to drive 0 (first drive).
266 .It Li chio move voltag VOLUME01 drive 0
267 Move the media with the barcode VOLUME01 to drive 0 (first drive).
268 .It Li chio return drive 0
269 Remove the tape from drive 0 (first drive) and return it to its original
270 location in the rack.
271 .It Li chio setpicker 2
272 Configure the changer to use picker 2 (third picker) for operations.
273 .El
274 .Sh SEE ALSO
275 .Xr mt 1 ,
276 .Xr mount 8
277 .Sh HISTORY
278 A
279 .Nm
280 utility appeared in
281 .Nx 1.3 .
282 .Nm
283 first appeared in
284 .Fx 2.2 .
285 .Sh AUTHORS
286 .An -nosplit
287 The
288 .Nm
289 program and SCSI changer driver were written by
290 .An Jason R. Thorpe Aq Mt thorpej@and.com
291 for And Communications,
292 .Pa http://www.and.com/ .
293 .Pp
294 Additional work by
295 .An Hans Huebner Aq Mt hans@artcom.de
296 and
297 .An Steve Gunn Aq Mt csg@waterspout.com .