xfs_growfs(8) System Manager's Manual xfs_growfs(8)
NAME
xfs_growfs - expand an XFS filesystem
SYNOPSIS
xfs_growfs [ -dilnrx ] [ -D size ] [ -e rtextsize ] [ -L size ] [ -m
maxpct ] [ -t mtab ] [ -R size ] [ mount-point | block-device ]
xfs_growfs -V
DESCRIPTION
xfs_growfs expands an existing XFS filesystem (see xfs(5)). The mount-
point argument is the pathname of the directory where the filesystem is
mounted. The block-device argument is the device name of a mounted XFS
filesystem. The filesystem must be mounted to be grown (see mount(8)).
The existing contents of the filesystem are undisturbed, and the added
space becomes available for additional file storage.
OPTIONS
-d | -D size
Specifies that the data section of the filesystem should be re-
sized. If the -D size option is given, the data section is
changed to that size, otherwise the data section is grown to the
largest size possible with the -d option. The size is expressed
in filesystem blocks. A filesystem with only 1 AG cannot be
shrunk further, and a filesystem cannot be shrunk to the point
where it would only have 1 AG.
-e Allows the real-time extent size to be specified. In mkfs.xfs(8)
this is specified with -r extsize=nnnn.
-i The new log is an internal log (inside the data section).
[NOTE: This option is not implemented]
-l | -L size
Specifies that the log section of the filesystem should be
grown, shrunk, or moved. If the -L size option is given, the log
section is changed to be that size, if possible. The size is ex-
pressed in filesystem blocks. The size of an internal log must
be smaller than the size of an allocation group (this value is
printed at mkfs(8) time). If neither -i nor -x is given with -l,
the log continues to be internal or external as it was before.
[NOTE: These options are not implemented]
-m Specify a new value for the maximum percentage of space in the
filesystem that can be allocated as inodes. In mkfs.xfs(8) this
is specified with -i maxpct=nn.
-n Specifies that no change to the filesystem is to be made. The
filesystem geometry is printed, and argument checking is per-
formed, but no growth occurs. See output examples below.
-r | -R size
Specifies that the real-time section of the filesystem should be
grown. If the -R size option is given, the real-time section is
grown to that size, otherwise the real-time section is grown to
the largest size possible with the -r option. The size is ex-
pressed in filesystem blocks. The filesystem does not need to
have contained a real-time section before the xfs_growfs opera-
tion.
-t Specifies an alternate mount table file (default is /proc/mounts
if it exists, else /etc/mtab). This is used when working with
filesystems mounted without writing to /etc/mtab file - refer to
mount(8) for further details.
-V Prints the version number and exits. The mount-point argument is
not required with -V.
xfs_growfs is most often used in conjunction with logical volumes (see
md(4) and lvm(8) on Linux). However, it can also be used on a regular
disk partition, for example if a partition has been enlarged while re-
taining the same starting block.
PRACTICAL USE
Filesystems normally occupy all of the space on the device where they
reside. In order to grow a filesystem, it is necessary to provide added
space for it to occupy. Therefore there must be at least one spare new
disk partition available. Adding the space is often done through the
use of a logical volume manager.
SEE ALSO
mkfs.xfs(8), xfs_info(8), md(4), lvm(8), mount(8).
xfs_growfs(8)
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