Provided by: sg3-utils_1.33-1_amd64 bug

NAME

       sg_sync - send the scsi command synchronize cache

SYNOPSIS

       sg_sync   [--count=COUNT]   [--group=GROUP]  [--help]  [--immed]  [--lba=LBA]  [--sync-nv]
       [--verbose] [--version] DEVICE

DESCRIPTION

       Send SYNCHRONIZE CACHE (10) command to DEVICE. This command  is  defined  for  SCSI  block
       devices  (see  SBC-2).  If successful this command makes sure that any blocks whose latest
       versions are held in (volatile) cache are written to (also termed as "synchronized  with")
       the  medium. If the --sync-nv option is given and the device has a non-volatile cache then
       any blocks whose latest versions are held in volatile cache are  written  to  non-volatile
       cache.

       If the LBA and COUNT arguments are both zero (their defaults) then all blocks in the cache
       are synchronized. If LBA is greater than zero while COUNT is zero then blocks in the cache
       whose  addresses  are  from  and  including  LBA  to  the  highest  lba  on the device are
       synchronized. If both LBA and COUNT are non zero then blocks in the cache whose  addresses
       lie in the range LBA to LBA+COUNT-1 inclusive are synchronized with the medium.

OPTIONS

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

       -c, --count=COUNT
              where  COUNT is the number of blocks to synchronize from and including LBA. Default
              value is 0. When 0 then all blocks in the (volatile) cache from and  including  LBA
              argument to the highest block address are synchronized.

       -g, --group=GROUP
              where  GROUP  is  the  group  number  which can be between 0 and 31 inclusive.  The
              default value is 0 . Group numbers are used to segregate data collected within  the
              device.  This  is  a  new feature in SBC-2 and can probably be ignored for the time
              being.

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

       -i, --immed
              sets the IMMED bit in the SYNCHRONIZE CACHE command. This instructs the device,  if
              the format of the command is acceptable, to return a GOOD status immediately rather
              than wait for the blocks in the (volatile) cache  to  be  synchronized  with  (i.e.
              written to) the medium (or the non-volatile cache).

       -l, --lba=LBA
              where  LBA  is  the  lowest  logical  block  address  in  the  (volatile)  cache to
              synchronize to the medium (or the non-volatile cache). Default value is 0 .

       -s, --sync-nv
              synchronize the (volatile) cache with the non-volatile cache. Without  this  option
              (or  if  there  is no non-volatile cache in the device) the synchronization is with
              the medium.

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

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

NOTES

       Various numeric arguments (e.g. LBA) may include multiplicative suffixes or  be  given  in
       hexadecimal. See the "NUMERIC ARGUMENTS" section in the sg3_utils(8) man page.

EXIT STATUS

       The  exit status of sg_sync 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 © 2004-2009 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_start(sg3_utils)