xfs_estimate(8)                                                                                                  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 ...

DESCRIPTION
       For  each  directory  argument,  xfs_estimate  estimates  the space that directory would take if it were copied to an XFS
       filesystem.  xfs_estimate 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 multiplication 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.

       -?     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.

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)