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 The default changer may be overridden by setting the environment variable
66 to the desired changer device.
68 A medium changer apparatus is made up of
70 There are five element types:
80 (select by volume identifier).
83 pseudo-element type allows the selection of tapes by their volume tag
84 (typically a barcode on the tape).
86 In this command description, the shorthand
88 will be used to represent an element type, and
90 will be used to represent an element unit.
91 For example, to represent the first robotic arm in the changer, the
99 .Sh SUPPORTED COMMANDS
100 .Bl -tag -width indent
102 .Ar <from ET> <from EU> <to ET> <to EU>
105 Move the media unit from
109 If the optional modifier
111 is specified, the media unit will be inverted before insertion.
113 .Ar <src ET> <src EU> <dst1 ET> <dst1 EU>
114 .Op Ar <dst2 ET> <dst2 ET>
118 Perform a media unit exchange operation.
123 and the media unit previously in
127 In the case of a simple exchange,
129 is omitted and the values
131 are used in their place.
132 The optional modifiers
136 specify whether the media units are to be inverted before insertion into
142 Note that not all medium changers support the
144 operation; the changer must have multiple free pickers or emulate
145 multiple free pickers with transient storage.
147 .Ar <from ET> <from EU>
149 Return the media unit to its source element.
150 This command will query the status of the specified media unit, and
151 will move it to the element specified in its source attribute.
152 This is a convenient way to return media from a drive or portal
153 to its previous element in the changer.
159 Position the picker in front of the element described by
161 If the optional modifier
163 is specified, the media unit will be inverted before insertion.
165 Note that not all changers behave as expected when issued this command.
167 Report the number of slots, drives, pickers, and portals in the changer,
168 and which picker unit the changer is currently configured to use.
170 Report which picker unit the changer is currently configured to use.
174 Configure the changer to use picker
181 .Em INITIALIZE ELEMENT STATUS
182 operation on the changer.
185 parameter may be given to specify a timeout in seconds for the
187 This may be used if the operation takes unusually long
188 because of buggy firmware or the like.
196 Change volume tag for an element in the media changer.
198 is only supported by few media changers.
199 If it is not supported by a
200 device, using this command will usually result in an "Invalid Field in
201 CDB" error message on the console.
205 flag is specified, the volume tag of the specified element is
209 flag is specified, the volume tag is superseded with the specified
210 volume tag even if a volume tag is already defined for the element.
211 It is an error to not specify the
213 flag when trying to set a label for an element which already has
214 volume tag information defined.
216 The command works with the primary volume tag or, if the
218 flag is given, with the alternate volume tag.
223 Report the status of all elements in the changer.
226 is specified, report the status of all elements of type
229 Print the primary volume tag for each loaded medium, if any.
234 Print the alternate volume tag for each loaded medium, if any.
236 Print the additional sense code and additional sense code qualifier for
239 Print the element source address for each element.
241 Print SCSI bus information for each element.
242 Note that this information
243 is valid only for drives.
245 Print the internal element addresses for each element.
247 element address is not normally used with this driver.
249 for diagnostic purposes only.
251 Print all additional information (as in
255 The status bits are defined as follows:
256 .Bl -tag -width indent
258 Element contains a media unit.
260 Media was deposited into element by an outside human operator.
262 Element is in an abnormal state.
264 Media in this element is accessible by a picker.
266 Element supports passing media (exporting) to an outside human operator.
268 Element supports receiving media (importing) from an outside human operator.
271 .Bl -tag -width /dev/ch0 -compact
273 default changer device
276 .Bl -tag -width indent
277 .It Li chio move slot 3 drive 0
278 Move the media in slot 3 (fourth slot) to drive 0 (first drive).
279 .It Li chio move voltag VOLUME01 drive 0
280 Move the media with the barcode VOLUME01 to drive 0 (first drive).
281 .It Li chio return drive 0
282 Remove the tape from drive 0 (first drive) and return it to its original
283 location in the rack.
284 .It Li chio setpicker 2
285 Configure the changer to use picker 2 (third picker) for operations.
294 program and SCSI changer driver were written by
295 .An Jason R. Thorpe Aq thorpej@and.com
296 for And Communications,
297 .Pa http://www.and.com/ .
304 .Aq csg@waterspout.com .