NAME

       thin_metadata_size - thin provisioning metadata device/file size calculator.

SYNOPSIS

       thin_metadata_size [options]

DESCRIPTION

       thin_metadata_size  calculates  the  size  of  the thin provisioning metadata based on the
       block size of the thin provisioned devices, the size of the thin provisioning pool and the
       maximum  number  of  all  thin prisioned devices and snapshots.  Because thin provisioning
       pools are holding widely variable contents,  this  tool  is  needed  to  provide  sensible
       initial default size.

       -b, --block-size BLOCKSIZE[bskKmMgGtTpPeEzZyY]
              Block      size     of     thin     provisioned     devices     in     units     of
              bytes,sectors,kilobytes,kibibytes,... respectively.  Default is in sectors  without
              a  block size unit specifier.  Size/number option arguments can be followed by unit
              specifiers in short one character and long form (eg. -b1m or -b1megabytes).

       -s, --pool-size POOLSIZE[bskKmMgGtTpPeEzZyY]
              Thin provisioning  pool  size  in  units  of  bytes,sectors,kilobytes,kibibytes,...
              respectively.  Default is in sectors without a pool size unit specifier.

       -m, --max-thins #[bskKmMgGtTpPeEzZyY]
              Maximum  sum  of  all  thin  provisioned  devices  and  snapshots.  Unit identifier
              supported to allow for convenient entry of large  quantities,  eg.  1000000  =  1M.
              Default is absolute quantity without a number unit specifier.

       -u, --unit {bskKmMgGtTpPeEzZyY}
              Output   unit   specifier   in   units   of   bytes,sectors,kilobytes,kibibytes,...
              respectively.  Default is in sectors without an output unit specifier.

       -n, --numeric-only [short|long]
              Limit  output  to  just  the  size  number  with  the   optional   unit   specifier
              character/string.

       -h, --help
              Print help and exit.

       -V, --version
              Output version information and exit.

EXAMPLES

       Calculates  the  thin  provisioning metadata device size for block size 64 kilobytes, pool
       size 1 terabytes and maximum number of thin provisioned devices and snapshots of  1000  in
       units of sectors with long output:

       thin_metadata_size -b64k -s1t -m1000

       Or  (using  the long options instead) for block size 1 gigabyte, pool size 1 petabytes and
       maximum number of thin provisioned devices and snapshots of 1 million  with  numeric  only
       output in units of gigabytes:

       thin_metadata_size --block-size=1g --pool-size=1p --max-thins=1M --unit=g --numeric-only

       Same as before (1g,1p,1M,numeric-only) but with unit specifier character appended:

       thin_metadata_size  --block-size=1giga  --pool-size=1petabytes  --max-thins=1mebi --unit=g
       --numeric-only=short

       Or with unit specifier string appended:

       thin_metadata_size --block-size=1giga  --pool-size=1petabytes  --max-thins=1mebi  --unit=g
       -nlong

DIAGNOSTICS

       thin_metadata_size returns an exit code of 0 for success or 1 for error.

SEE ALSO

       thin_dump(8) thin_check(8) thin_repair(8) thin_restore(8) thin_rmap(8)

AUTHOR

       Joe Thornber <ejt@redhat.com>
       Heinz Mauelshagen <HeinzM@RedHat.com>