xfs\_estimate(8) System Manager's Manual xfs\_estimate(8)

# [NAME](#NAME)

xfs\_estimate - estimate the space that an XFS filesystem will take

# [SYNOPSIS](#SYNOPSIS)

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


xfs_estimate -V
```

# [DESCRIPTION](#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*](#b)

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**](#v)

Display more information, formatted.

[**-h**](#h)

Display usage message.

[**-i, -e** *logsize*](#i,)

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.

[**-V**](#V)

Print the version number and exits.

# [EXAMPLES](#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
```

---

Document: xfs_estimate(8) from xfsprogs 7.2.1-r0 (Chainguard OS)
Source: https://kernel.googlesource.com/pub/scm/fs/xfs/xfsprogs-dev