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SG_LUNS(8)			   SG3_UTILS			    SG_LUNS(8)

NAME
       sg_luns - send 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 manda‐
       tory.

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 8192 is used. The maximum allowed 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  fol‐
	      lowing  lun addressing methods: logical unit addressing, periph‐
	      eral device addressing and flat space  addressing.   When	 1  is
	      given  the DEVICE should yield a list of only "well known" logi‐
	      cal 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  between  0xf8  and  0xff (inclusive) are vendor specific
	      (SPC-4 (rev 32), other values greater than 2 are reserved.

       -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 © 2004-2012 Douglas Gilbert
       This  software is distributed under a FreeBSD license. There is NO war‐
       ranty; not even for MERCHANTABILITY or FITNESS FOR  A  PARTICULAR  PUR‐
       POSE.

SEE ALSO
       sg_inq(8)

sg3_utils-1.35			 November 2012			    SG_LUNS(8)

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