xfs_growfs - expand an XFS filesystem
xfs_growfs [ -dilnrx ] [ -D size ] [
-e rtextsize ] [ -L size ] [ -m
maxpct ] [ -t mtab ] [ -R size ] [
mount-point | block-device ]
xfs_growfs -V
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.
- -d | -D size
- Specifies that the data section of the filesystem should be grown. If the
-D size option is given, the data section is grown 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.
- -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 expressed 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 performed, 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 expressed in filesystem
blocks. The filesystem does not need to have contained a real-time section
before the xfs_growfs operation.
- -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 retaining the same starting block.
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.