xfs_estimate man page on ElementaryOS

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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_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.

       -?     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)
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