NAME
fsadm_hfs: fsadm — HFS file system administration command
SYNOPSIS
/usr/sbin/fsadm
[-F
hfs]
[-V]
[-o
specific_options]
special
DESCRIPTION
The
fsadm
command is designed to perform selected administration tasks
on HFS file systems.
special
is a device file containing an unmounted file system.
Only a superuser can invoke
fsadm.
Options
- -F hfs
Specify the HFS file system type.
- -o specific_options
Specify a list of comma separated
suboptions and/or keyword/attribute pairs
from the list below.
The following
specific_options
are valid on HFS file systems.
- largefiles
Converts a
nolargefiles
file system to a
largefiles
file system. The file system should be unmounted and must be in a clean state (see
fsck(1M)).
A
largefiles
file system supports file sizes greater than 2 gigabytes.
- nolargefiles
Converts a
largefiles
file system to a
nolargefiles
file system. The file system should be umounted and must be in a clean state (see
fsck(1M)).
All
largefiles
should be purged from the file system for the conversion to succeed.
- -V
Echo the completed command line,
but perform no other action.
The command line is generated
by incorporating the user-specified options
and other information derived from
/etc/fstab.
This option allows the user to verify the command line.
DIAGNOSTICS
Error and warning messages may originate from
fsadm
and
fsck.
See
fsadm(1M)
or
fsck(1M)
to interpret the error and warning messages.
EXAMPLES
Convert a
nolargefiles
HFS file system to a
largefiles
HFS file system:
fsadm -F hfs -o largefiles /dev/vg02/rlvol1
Convert a
largefiles
HFS file system to a
nolargefiles
file system:
fsadm -F hfs -o nolargefiles /dev/vg02/rlvol1
Display relevant HFS file system statistics:
fsadm -F hfs /dev/vg02/rlvol1
WARNINGS
The size of a file system will impact the performance of the
fsadm
command.
During conversion from largefiles file system to a nolargefiles file system
fsadm
scans the entire file system for a large file. This functionality degrades the performance of the
fsadm
command.
FILES
- /etc/fstab
Static information about the systems
Printable version
