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,
xxffss_eessttiimmaattee --bb 6644kk //
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 multipli
cation by 1024 or 1048576, respectively.
For example,
xxffss_eessttiimmaattee --ii 11mm //
requests an estimate of the space required by the
directory / on an XFS filesystem using an internal
log of 1 megabyte.
EXAMPLES
% xxffss_eessttiimmaattee --ee 1100mm //vvaarr//ttmmpp
with the external log using 2560 blocks or about 10.0 megabytes
% xxffss_eessttiimmaattee --vv --ee 1100mm //vvaarr//ttmmpp
directory bsize blocks megabytes logsize
/var/tmp 4096 792 4.0MB 10485760
% xxffss_eessttiimmaattee --vv //vvaarr//ttmmpp
directory bsize blocks megabytes logsize
/var/tmp 4096 3352 14.0MB 10485760
% xxffss_eessttiimmaattee //vvaarr//ttmmpp
/var/tmp will take about 14.0 megabytes
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