extendfs_hfs: extendfs - extend HFS file system size
If the original HFS file system image created on special does not make
use of all of the available space, the command can be used to increase
the capacity of an HFS file system by updating the file system struc‐
ture to include the extra space.
The command-line parameter special specifies the character device spe‐
cial file of either a logical volume or a disk partition. The special
must be unmounted before the command can be run (see mount(1M)).
recognizes the following options:
Specify the HFS file system type.
Query the size of
special. No file system extension will be done.
Specifies the number of
blocks to be added to the file system. If the number
of blocks is not specified, the maximum possible size
To increase the capacity of a file system created on a logical volume,
The root file system cannot be extended using the command because the
root file system is always mounted, and the command only works on
unmounted file systems.
will fail if used on a file system, on a logical volume, where the log‐
ical 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.
returns the following values:
0 No errors were detected and file system was success‐
1 Command aborted.
SEE ALSOextendfs(1M), lvextend(1M), mkfs(1M), mount(1M), umount(1M).