huschi.net

xfs_estimate(8)             System Manager's Manual            xfs_estimate(8)
NAME
       xfs_estimate - estimate the space that an XFS filesystem will take
SYNOPSIS
       xfs_estimate [ -h ] [ -b blocksize ] [ -i logsize ]
                    [ -e logsize ] [ -v ] directory ...
       xfs_estimate -V
DESCRIPTION
       For  each  directory  argument,  xfs_estimate  estimates the space that
       directory would take if it were copied to an XFS filesystem.  xfs_esti-
       mate does not cross mount points.  The following definitions are used:
              KB = *1024
              MB = *1024*1024
              GB = *1024*1024*1024
       The xfs_estimate options are:
       -b blocksize
              Use  blocksize  instead  of the default blocksize of 4096 bytes.
              The modifier k can be used after the number to  indicate  multi-
              plication by 1024.  For example,
                   xfs_estimate -b 64k /
              requests an estimate of the space required by the directory / on
              an XFS filesystem using a blocksize of 64K (65536) bytes.
       -v     Display more information, formatted.
       -h     Display usage message.
       -i, -e logsize
              Use logsize instead of the default log size of 1000 blocks.   -i
              refers  to  an internal log, while -e refers to an external log.
              The modifiers k or m can be used after the  number  to  indicate
              multiplication by 1024 or 1048576, respectively.
              For example,
                   xfs_estimate -i 1m /
              requests an estimate of the space required by the directory / on
              an XFS filesystem using an internal log of 1 megabyte.
       -V     Print the version number and exits.
EXAMPLES
       % xfs_estimate -e 10m /var/tmp
       /var/tmp will take about 4.2 megabytes
               with the external log using 2560 blocks or about 10.0 megabytes
       % xfs_estimate -v -e 10m /var/tmp
       directory                     bsize   blocks    megabytes    logsize
       /var/tmp                       4096      792        4.0MB   10485760
       % xfs_estimate -v /var/tmp
       directory                     bsize   blocks    megabytes    logsize
       /var/tmp                       4096     3352       14.0MB   10485760
       % xfs_estimate /var/tmp
       /var/tmp will take about 14.0 megabytes
                                                               xfs_estimate(8)