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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16 .\" This product includes software developed by Jason R. Thorpe
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.
158 Position the picker in front of the element described by
160 If the optional modifier
162 is specified, the media unit will be inverted before insertion.
164 Note that not all changers behave as expected when issued this command.
166 Report the number of slots, drives, pickers, and portals in the changer,
167 and which picker unit the changer is currently configured to use.
169 Report which picker unit the changer is currently configured to use.
173 Configure the changer to use picker
179 .Em INITIALIZE ELEMENT STATUS
180 operation on the changer.
183 parameter may be given to specify a timeout in seconds for the
185 This may be used if the operation takes unusually long
186 because of buggy firmware or the like.
194 Change volume tag for an element in the media changer.
196 is only supported by few media changers.
197 If it is not supported by a
198 device, using this command will usually result in an "Invalid Field in
199 CDB" error message on the console.
203 flag is specified, the volume tag of the specified element is
207 flag is specified, the volume tag is superseded with the specified
208 volume tag even if a volume tag is already defined for the element.
209 It is an error to not specify the
211 flag when trying to set a label for an element which already has
212 volume tag information defined.
214 The command works with the primary volume tag or, if the
216 flag is given, with the alternate volume tag.
221 Report the status of all elements in the changer.
224 is specified, report the status of all elements of type
227 Print the primary volume tag for each loaded medium, if any.
232 Print the alternate volume tag for each loaded medium, if any.
234 Print the additional sense code and additional sense code qualifier for
237 Print the element source address for each element.
239 Print SCSI bus information for each element.
240 Note that this information
241 is valid only for drives.
243 Print the internal element addresses for each element.
245 element address is not normally used with this driver.
247 for diagnostic purposes only.
249 Print all additional information (as in
253 The status bits are defined as follows:
254 .Bl -tag -width indent
256 Element contains a media unit.
258 Media was deposited into element by an outside human operator.
260 Element is in an abnormal state.
262 Media in this element is accessible by a picker.
264 Element supports passing media (exporting) to an outside human operator.
266 Element supports receiving media (importing) from an outside human operator.
269 .Bl -tag -width /dev/ch0 -compact
271 default changer device
274 .Bl -tag -width indent
275 .It Li chio move slot 3 drive 0
276 Move the media in slot 3 (fourth slot) to drive 0 (first drive).
277 .It Li chio move voltag VOLUME01 drive 0
278 Move the media with the barcode VOLUME01 to drive 0 (first drive).
279 .It Li chio return drive 0
280 Remove the tape from drive 0 (first drive) and return it to its original
281 location in the rack.
282 .It Li chio setpicker 2
283 Configure the changer to use picker 2 (third picker) for operations.
292 program and SCSI changer driver were written by
293 .An Jason R. Thorpe Aq Mt thorpej@and.com
294 for And Communications,
295 .Pa http://www.and.com/ .
298 .An Hans Huebner Aq Mt hans@artcom.de
300 .An Steve Gunn Aq Mt csg@waterspout.com .