User guide

Mid-Range Library Media Manager Installation and User’s Guide—541641-001
D-1
D Interfacing to MLMM
Command Outputs
This section describes how to structure interprocess commands for use within the
Guardian operating system. Any byte that is not specified with data (an empty byte)
should be specified as a space. (See Examples of Structure.)
Mount Media Command
The Mount Media command is used to mount the specified media, by media label to a
transport. To request a specific drive,client include the Guardian name for the drive (for
example, $TAPE1) within the mount request. If no tape drive name is specified, the
tape label will be mounted in the first available drive, if any. If no drive is available, the
request is placed in a queue. For details, see Table D-2 on page D-2.
Table D-1. Detail Command Byte Structure
Argument No. of Bytes
Command 2
Device Node 10
Device Name 10
Label 8
Drive Node 10
Drive Name 10
Res. 1 20
Res. 2 10
Res. 3 6
AltField 1 10
AltField 2 10
AltField 3 10
AltField 4 10
ErrorCode 2