xfs_growfs, xfs_info - expand an XFS filesystem
SYNOPSIS
xfs_growfs [ -dilnrxV ] [ -D size ] [ -e rtextsize ]
[ -L size ] [ -m maxpct ] [ -t mtab ]
[ -R size ] mount-point
xfs_info [ -t mtab ] mount-point
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 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.
xfs_info is equivalent to invoking xfs_growfs with the -n
option (see discussion below).
The options to xfs_growfs are:
-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 pos
sible. 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 ext
size=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 contin
ues 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 this is specified with -i max
pct=nn.
-n Specifies that no change to the filesystem is to be
argument checking is performed, but no growth
occurs.
-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. 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
/etc/mtab). This is used when working with
filesystems mounted without writing to /etc/mtab
file - refer to mount(8) for further details.
xfs_growfs is most often used in conjunction with logical
volumes (see lvm(8) ). 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.
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. There
fore 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), lvm(8), mount(8).
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