1 .\" $NetBSD: chio.1,v 1.4 1997/10/02 00:41:25 hubertf Exp $
3 .\" Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
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17 .\" for And Communications, http://www.and.com/
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40 .Nd medium changer control utility
52 utility is used to control the operation of medium changers, such as those
53 found in tape and optical disk jukeboxes.
55 The options are as follows:
56 .Bl -tag -width indent
60 rather than the default device
64 A medium changer apparatus is made up of
66 There are five element types:
76 (select by volume identifier).
79 pseudo-element type allows the selection of tapes by their volume tag
80 (typically a barcode on the tape).
82 In this command description, the shorthand
84 will be used to represent an element type, and
86 will be used to represent an element unit.
87 For example, to represent the first robotic arm in the changer, the
95 .Sh SUPPORTED COMMANDS
96 .Bl -tag -width indent
98 .Ar <from ET> <from EU> <to ET> <to EU>
101 Move the media unit from
105 If the optional modifier
107 is specified, the media unit will be inverted before insertion.
109 .Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
110 .Op Ar <dst2 ET> <dst2 ET>
114 Perform a media unit exchange operation.
119 and the media unit previously in
123 In the case of a simple exchange,
125 is omitted and the values
127 are used in their place.
128 The optional modifiers
132 specify whether the media units are to be inverted before insertion into
138 Note that not all medium changers support the
140 operation; the changer must have multiple free pickers or emulate
141 multiple free pickers with transient storage.
143 .Ar <from ET> <from EU>
145 Return the media unit to its source element.
146 This command will query the status of the specified media unit, and
147 will move it to the element specified in its source attribute.
148 This is a convenient way to return media from a drive or portal
149 to its previous element in the changer.
155 Position the picker in front of the element described by
157 If the optional modifier
159 is specified, the media unit will be inverted before insertion.
161 Note that not all changers behave as expected when issued this command.
163 Report the number of slots, drives, pickers, and portals in the changer,
164 and which picker unit the changer is currently configured to use.
166 Report which picker unit the changer is currently configured to use.
170 Configure the changer to use picker
177 .Em INITIALIZE ELEMENT STATUS
178 operation on the changer.
181 parameter may be given to specify a timeout in seconds for the
183 This may be used if the operation takes unusually long
184 because of buggy firmware or the like.
192 Change volume tag for an element in the media changer.
194 is only supported by few media changers.
195 If it is not supported by a
196 device, using this command will usually result in an "Invalid Field in
197 CDB" error message on the console.
201 flag is specified, the volume tag of the specified element is
205 flag is specified, the volume tag is superseded with the specified
206 volume tag even if a volume tag is already defined for the element.
207 It is an error to not specify the
209 flag when trying to set a label for an element which already has
210 volume tag information defined.
212 The command works with the primary volume tag or, if the
214 flag is given, with the alternate volume tag.
219 Report the status of all elements in the changer.
222 is specified, report the status of all elements of type
225 Print the primary volume tag for each loaded medium, if any.
230 Print the alternate volume tag for each loaded medium, if any.
232 Print the additional sense code and additional sense code qualifier for
235 Print the element source address for each element.
237 Print SCSI bus information for each element.
238 Note that this information
239 is valid only for drives.
241 Print the internal element addresses for each element.
243 element address is not normally used with this driver.
245 for diagnostic purposes only.
247 Print all additional information (as in
251 The status bits are defined as follows:
252 .Bl -tag -width indent
254 Element contains a media unit.
256 Media was deposited into element by an outside human operator.
258 Element is in an abnormal state.
260 Media in this element is accessible by a picker.
262 Element supports passing media (exporting) to an outside human operator.
264 Element supports receiving media (importing) from an outside human operator.
267 .Bl -tag -width CHANGER
269 The default changer may be overridden by setting this environmental
270 variable to the desired changer device.
273 .Bl -tag -width /dev/ch0 -compact
275 default changer device
278 .Bl -tag -width indent
279 .It Li chio move slot 3 drive 0
280 Move the media in slot 3 (fourth slot) to drive 0 (first drive).
281 .It Li chio move voltag VOLUME01 drive 0
282 Move the media with the barcode VOLUME01 to drive 0 (first drive).
283 .It Li chio return drive 0
284 Remove the tape from drive 0 (first drive) and return it to its original
285 location in the rack.
286 .It Li chio setpicker 2
287 Configure the changer to use picker 2 (third picker) for operations.
304 program and SCSI changer driver were written by
305 .An Jason R. Thorpe Aq Mt thorpej@and.com
306 for And Communications,
307 .Pa http://www.and.com/ .
310 .An Hans Huebner Aq Mt hans@artcom.de
312 .An Steve Gunn Aq Mt csg@waterspout.com .