Name
xfs_estimate - estimate the space that an XFS filesystem will takeSynopsis
\f3xfs_estimate\f1 [ \f3-h\f1 ] [ \f3-b\f1 blocksize ] [ \f3-i\f1 logsize ]
[ \f3-e\f1 logsize ] [ \f3-v\f1 ] directory ...
xfs_estimate -V
Description
For each \f2directory\f1 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:
\f3-b\f1 \f2blocksize\f1 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, \f4xfs_estimate -b 64k /\f1
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.
\f3-i, -e\f1 \f2logsize\f1 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, \f4xfs_estimate -i 1m /\f1
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
% \f4xfs_estimate -e 10m /var/tmp\f1\f7
/var/tmp will take about 4.2 megabytes
with the external log using 2560 blocks or about 10.0 megabytes
% \f4xfs_estimate -v -e 10m /var/tmp\f1\f7 directory bsize blocks megabytes logsize /var/tmp 4096 792 4.0MB 10485760
% \f4xfs_estimate -v /var/tmp\f1\f7 directory bsize blocks megabytes logsize /var/tmp 4096 3352 14.0MB 10485760
% \f4xfs_estimate /var/tmp\f1\f7 /var/tmp will take about 14.0 megabytes