Content-type: text/html Man page of CHANGERS

CHANGERS

Section: Maintenance Commands (8)
Updated: Dec 11, 01m
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NAME

changers - list SCSI autochangers attached to the system  

SYNOPSIS

changers [ -dpv ] [ -a b.t.l | -f filename ] [ -l ]  

DESCRIPTION

The changers program lists all of the SCSI autochangers (jukeboxes) connected to the current system.

 

OPTIONS

-a b.t.l
Selects a specific ordinal SCSI address, where b is the logical SCSI bus, t is the SCSI target, and l is the SCSI logical unit number (LUN) on that target. See libscsi(1m).
-f filename
Specifies an explicit device file name for changers
 to use on platforms that support direct use of device file names for jukeboxes.  At this time those platforms are Solaris 10+, AIX and Linux
-d
Determines the names and addresses of the autochanger's media elements (for example, tape drives).
-l
Performs a complete LUN search for all SCSI adapters in the system. This argument is accepted on all systems, but does not have any effect on HP-UX systems. Due to the method used to scan for available devices on HP-UX systems, all accessible devices are always shown, and the -l option has no additional effect. On all other platforms, the normal behavior is to start checking at LUN 0 for SCSI devices. The first empty LUN found will end the search for a given target ID. With the -l option, all LUN present on all target IDs for all SCSI busses in the system will be checked for devices. This can take a very long time and should therefore only be used when necessary. For example, a Fibre Channel adapter can support 126 target IDs, each of which may have 80 or more LUNs. Checking all LUNs on this single adapter may take over 10 minutes.
-p
Tells changers to use persistent device names for jukeboxes on platforms where persistent names are supported. Currently only linux has such support.
-v
Lists more detailed information about each autochanger. The details indicate how many media transports (MT, for example, robot arm), storage transports (ST, for example, slot), import/export elements (IE, for example, mail slot), and data transport (DT) elements the autochanger contains. The -v option also provides information about the element movement matrix supported by the autochanger.

 

EXAMPLE

Sample output is shown below: hal$ changers -dv -a 0.2.0 [email protected]:Vendor <SPECTRA>, Product <4000>
 Data Transfer Element at address 80 is [email protected]
        Device:Vendor <HP>, Product <C1533A>
          Type:Tape
   System Name: /dev/rmt2.1
 Data Transfer Element at address 81 is [email protected]
        Device:Vendor <HP>, Product <C1533A>
          Type:Tape
   System Name: /dev/rmt3.1


         1 MT Element  starting at address 79
        60 ST Elements starting at address 1
         1 IE Element  starting at address 0
         2 DT Elements starting at address 80


                  Element Movement Matrix


                  ->DT,  ->IE,  ->ST,  ->MT
                MT->DT,MT->IE,MT->ST,______
                ST->DT,ST->IE,ST->ST,ST->MT
                IE->DT,______,IE->ST,IE->MT
                DT->DT,DT->IE,DT->ST,DT->MT
                ______,______,______,______
                ______,______,______,______
                ______,______,______,______
                ______,______,______,______
 
 
 

SEE ALSO

libscsi(1m)


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO

This document was created by man2html, using the manual pages.
Time: 02:37:10 GMT, October 02, 2010