xfs_growfs(1M)                                                  xfs_growfs(1M)


NAME
     xfs_growfs - expand an XFS filesystem

SYNOPSIS
     xfs_growfs [ -D size ] [ -d ] [ -e rtextsize ] [ -i ] [ -L size ]
          [ -l ] [ -m maxpct ] [ -n ] [ -R size ] [ -r ] [ -x ] mount-point

DESCRIPTION
     xfs_growfs expands an existing XFS filesystem (see xfs(4)).  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(1M)).
     The existing contents of the filesystem are undisturbed, and the added
     space becomes available for additional file storage.

     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 mkfs_xfs(1M)
          this is specified with -r extsize=nnnn.

     -i   The new log is an internal log (inside the data section).

     -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(1M)
          time).  If neither -i nor -x is given with -l, the log continues to
          be internal or external as it was before.

     -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 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.


     -x   The new log is an external log (in an XLV log subvolume).

     xfs_growfs is most often used in conjunction with logical volumes (see
     xlv(7M) or lv(7M)).  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 done through the mechanism
     of logical volumes.  If the filesystem already resides on a logical
     volume, the volume is simply extended using mklv(1M) or xlv_mgr(1M).  If
     the filesystem is currently on a regular partition, it is necessary to
     create a new logical volume whose first member is the existing partition,
     with subsequent members being the new partition(s) to be added.  Again,
     mklv or xlv_mgr is used for this.  In either case xfs_growfs is run on
     the mounted filesystem, and the expanded filesystem is then available for
     use.

SEE ALSO
     mkfs_xfs(1M), mklv(1M), mount(1M), xlv_make(1M), lv(7M), xlv(7M).


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