RELEM(8)RELEM(8)NAMErelem - read element status
SYNOPSISrelem [ -a b.t.l ] [ -fvtb ] [ -m {0|1|2} ] [ -r eladdr.nel ] [ -l ]
DESCRIPTION
The relem program will send a READ ELEMENT STATUS command to all chang‐
ers, or (with the -a option) to the named device.
SIMPLE 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).
-f generates full output (somewhat verbose).
-v generates very verbose output.
-t causes volume tags, if present, to be printed.
-b causes the returned element status data to be dumped as hexadec‐
imal codes rather than interpreted.
-l Performs a complete LUN search for all SCSI adapters in the sys‐
tem when performing Autodetection. 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 shown, and the -l option has
no additional effect. On all other systems, checking starts at
LUN 0 for SCSI devices. The first empty LUN found will end the
search for a given target ID. With the -l option, LUNS on all
target IDs for all SCSI busses in the system are checked for
jukeboxes. This can take a very long time and should 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 min‐
utes.
METHOD OPTIONS-m 0 all element status data is fetched in one call
-m 1 element status data is fetched per element type (e.g., all drive
elements are read at once, then all slot elements, etc.)
-m 2 element data is fetched per element (which is the default
method)
The SCSI specification allows each of the previous methods of fetching
element data.
Note: some changers have defects with respect to fetching element data.
For example, one changer may be accurate when reporting all elements of
a particular type (using method -m 1), but return only zeros if asked
for all elements at once (using method -m 2).
RANGE OPTIONS-r eladdr.nel is used to read a range of addresses, where eladdr is
the starting decimal address (in the particular changer's num‐
bering scheme) of the element to start from, and nel is the num‐
ber of elements of status to read. Use changers to get the par‐
ticular addresses used by your changer.
SEE ALSO
libscsi (8)
NetWorker 7.3.2 Aug 23, 06 RELEM(8)