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sg_luns

SG_LUNS(8)							     SG3_UTILS								SG_LUNS(8)

NAME

       sg_luns - send the SCSI REPORT LUNS command

SYNOPSIS

       sg_luns [--decode] [--help] [--hex] [--maxlen=LEN] [--quiet] [--raw] [--select=SR] [--verbose] [--version] DEVICE

DESCRIPTION

       Send the SCSI REPORT LUNS command to the DEVICE and outputs the response. In the SPC-3 SCSI standard support for this command is mandatory.

OPTIONS

       Arguments to long options are mandatory for short options as well.

       -d, --decode
	      decode  logical  unit  numbers  into  their hierarchical parts. Interprets luns as described in SAM-3 when the HiSup bit is set in a
	      standard INQUIRY's response.

       -h, --help
	      output the usage message then exit.

       -H, --hex
	      output response to this command in ASCII hex.

       -m, --maxlen=LEN
	      where LEN is the (maximum) response length in bytes. It is placed in the cdb's "allocation length" field. If not given  (or  LEN	is
	      zero) then 65536 is used. The maximum value of LEN is 65536.

       -q, --quiet
	      output ASCII hex rendering of each report lun, one per line.

       -r, --raw
	      output response in binary (to stdout).

       -s, --select=SR
	      this  option  sets  the 'select report' field (SR) in the SCSI REPORT LUNS command. The default value is 0. When 0 is given (or this
	      option is not specified) then the DEVICE should yield a list of luns addressable via this "I_T nexus" that  use  the  following  lun
	      addressing  methods:  logical  unit  addressing, peripheral device addressing and flat space addressing.	When 1 is given the DEVICE
	      should yield a list of only "well known" logical units addressable via this "I_T" nexus. When 2 is given the DEVICE should yield all
	      luns  addressable  via  this  "I_T" nexus.  To simplify, for the I_T nexus associated with the DEVICE, the meanings of the SR values
	      are:
		0 : all luns excluding well known logical units
		1 : well known logical units
		2 : all luns
	      Values greater than 2 are reserved (at SPC-4 (rev 8)).

       -v, --verbose
	      increase the level of verbosity, (i.e. debug output).

       -V, --version
	      print the version string and then exit.

EXIT STATUS

       The exit status of sg_luns is 0 when it is successful. Otherwise see the sg3_utils(8) man page.

AUTHORS

       Written by Douglas Gilbert.

REPORTING BUGS

       Report bugs to <dgilbert at interlog dot com>.

COPYRIGHT

       Copyright (C) 2004-2008 Douglas Gilbert
       This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A  PARTICULAR  PUR-
       POSE.

SEE ALSO

       sg_inq(8)

sg3_utils-1.26							    April 2008								SG_LUNS(8)