extendfs_hfs.1m (2010 09)

e
extendfs_hfs(1M) extendfs_hfs(1M)
NAME
extendfs_hfs: extendfs - extend 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).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1