xfs_estimate

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

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: 0

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,

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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,

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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.

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% 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

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% xfs_estimate-v -e 10m /var/tmp directory bsize blocks megabytes logsize /var/tmp 4096 792 4.0MB 10485760

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% xfs_estimate-v /var/tmp directory bsize blocks megabytes logsize /var/tmp 4096 3352 14.0MB 10485760

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% xfs_estimate/var/tmp /var/tmp will take about 14.0 megabytes