NAME

       sg_get_lba_status - send 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 © 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 PURPOSE.

SEE ALSO

       sg_write_same(8), sg_unmap(8)