xfs_estimate(1M)					      xfs_estimate(1M)

NAME    [Toc]    [Back]

     xfs_estimate - estimate the space that an XFS filesystem will take

SYNOPSIS    [Toc]    [Back]

     xfs_estimate [ -h?	] [ -b blocksize ] [ -i	logsize	] [ -e logsize ] [ -v ]	directory ...

DESCRIPTION    [Toc]    [Back]

     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 10 MB.	 -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.

     If	xfs_estimate is	run on an XFS filesystem, the estimate is less
     reliable than on an EFS filesystem.







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xfs_estimate(1M)					      xfs_estimate(1M)



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


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