NAME

extendfs (hfs) − extend an HFS file system size

SYNOPSIS

/usr/sbin/extendfs [-F hfs] [-q] [-v] [-s size] special

DESCRIPTION

If the original HFS file system image created on special does not make use of all of the available space, the extendfs command can be used to increase the capacity of an HFS file system by updating the file system structure to include the extra space. 

The command-line parameter special specifies the character device special file of either a logical volume or a disk partition.  The special must be unmounted before the extendfs command can be run (see mount(1M)).

Options

extendfs recognizes the following options:

-F hfs Specify the HFS file system type. 

-q Query the size of special. No file system extension will be done.

-v Verbose flag. 

-s size Specifies the number of DEV_BSIZE blocks to be added to the file system.  If the number of blocks is not specified, the maximum possible size is used. 

EXAMPLES

To increase the capacity of a file system created on a logical volume, enter:

umount /dev/vg00/lvol1

lvextend -L larger_size /dev/vg00/lvol1

extendfs -F hfs /dev/vg00/rlvol1

mount /dev/vg00/lvol1 mount_directory

WARNINGS

The root file system cannot be extended using the extendfs command because the root file system is always mounted, and the extendfs command only works on unmounted file systems. 

extendfs will fail if used on a file system, on a logical volume, where the logical block size of the logical volume is greater than the file system’s fragment size.  The logical block size, of a logical volume changes, when additional disks with larger sector size are added. 

RETURN VALUE

extendfs returns the following values:

 0 No errors were detected and file system was successfully extended. 

 1 Command aborted. 

SEE ALSO

extendfs(1M), lvextend(1M), mkfs(1M), mount(1M), umount(1M), fs(4). 

Hewlett-Packard Company  —  HP-UX Release 10.20:  July 1996