SG_GET_LBA_STATUS(8)						     SG3_UTILS						      SG_GET_LBA_STATUS(8)

NAME

       sg_get_lba_status - send the SCSI GET LBA STATUS command

SYNOPSIS

       sg_get_lba_status [--brief] [--help] [--hex] [--lba=LBA] [--maxlen=LEN] [--raw] [--verbose] [--version] DEVICE

DESCRIPTION

       Send  the  SCSI GET LBA STATUS command to the DEVICE and outputs the response. This command was introduced in (draft) SBC-3 revision 20 and
       devices that support logical block provisioning should support this command.

       The default action is to decode the response into one LBA status descriptor per line output to stdout. The descriptor LBA is output in  hex
       (prefixed  by  '0x')  and the number of blocks is output in decimal followed by the provisioning status in decimal. The provisioning status
       can be in the range 0 to 15 of which only 0 (mapped), 1 (unmapped) and 2 (anchored) are used currently. The amount of output can be reduced
       by the --brief option.

OPTIONS

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

       -b, --brief
	      when  use  once  then  one  LBA  status  descriptor  per	line  is output to stdout.  Each line has this format: "0x<descriptor_LBA>
	      0x<blocks> <provisioning_status>". So the descriptor LBA and blocks are output in hex and the provisioning status in  decimal.  When
	      used  twice  (e.g.  '-bb'  or  '--brief  --brief') the the provisioning status of the given LBA (or LBA 0 if the --lba option is not
	      given) is output to stdout. A check is made that the given LBA lies on the range of the first returned LBA status descriptor (as	it
	      should according to SBC-3 revision 20) and warnings are sent to stderr if it doesn't.

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

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

       -l, --lba=LBA
	      where  LBA  is  the starting Logical Block Address (LBA) to check the provisioning status for. Note that the DEVICE chooses how many
	      following blocks that it will return provisioning status for.

       -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  then  24	is
	      used. 24 is enough space for the response header and one LBA status descriptor.  LEN should be 8 plus a multiple of 16 (e.g. 24, 40,
	      and 56 are suitable).

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

       -v, --verbose
	      increase the level of verbosity, (i.e. debug output). Additional output caused by this option is sent to stderr.

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

NOTES

       In SBC-3 revision 25 the calculation associated with the Parameter Data Length field in the response was modified. Prior to that  the  byte
       offset was 8 and in revision 25 it was changed to 4.

       For  a  discussion  of  logical	block provisioning see section 4.7 of sbc3r29.pdf at http://www.t10.org (or the corresponding section of a
       later draft).

EXIT STATUS

       The exit status of sg_get_lba_status 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) 2009-2012 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_write_same(8), sg_unmap(8)

sg3_utils-1.33							   January 2012 					      SG_GET_LBA_STATUS(8)