CHANGERS(8)CHANGERS(8)NAMEchangers - list SCSI autochangers attached to the system
SYNOPSISchangers [ -dv ] [ -a b.t.l ] [ -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(8).
-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 sys‐
tem. 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.
-v Lists more detailed information about each autochanger. The
details indicate how many media transports (MT, for example, ro‐
bot 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 sup‐
ported by the autochanger.
EXAMPLE
Sample output is shown below: hal$ changers-dv -a 0.2.0
scsidev@0.2.0:Vendor <SPECTRA>, Product <4000>
Data Transfer Element at address 80 is scsidev@0.5.0
Device:Vendor <HP>, Product <C1533A>
Type:Tape
System Name: /dev/rmt2.1
Data Transfer Element at address 81 is scsidev@0.6.0
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 ALSOlibscsi(8)NetWorker 7.3.2 Aug 23, 06 CHANGERS(8)