NAME
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
R 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
R 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 possible.
The size
is expressed in
filesystem blocks.
-e
Allows the real-time extent size to be specified.
In
R mkfs.xfs (8)
this is specified with
-r
I 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
R -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
this is specified with
-i
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.
-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
/proc/mounts
if it exists, else
R /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
R md (4)
and
R 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.
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),
md(4),
lvm(8),
mount(8).
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