Information Technology Reference
In-Depth Information
noatime
—Reduce file system activity by not updating file access times.
➤
nointr
—Do not allow keyboard interrupts to kill processes waiting on
file system I/O.
➤
nolargefiles
—Do not allow files larger than 2GB. If any exist in the
file system, the mount will fail.
➤
nosuid
—Disallow
setuid
execution on files.
➤
suid
—Allow
setuid
execution on files (default).
➤
The following (abbreviated) listing shows the use of the
mount
command:
# mount -F ufs -o nolargefiles,noatime
➥
/dev/dsk/c0t2d0s4 /usr2
# mount
/usr2 on /dev/dsk/c0t2d0s4
➥
read/write/nolargefiles/noatime on Fri Aug 2 12:44:18 2002
#
Unlike the other file system commands, the
mount
command requires a logical block
device name of a partition in which the file system resides.
The
umount(1M)
command is used to unmount a file system. The file system
cannot be unmounted if it is busy (for example, when a program that resides
on the file system is being executed or if the current directory of a logged-in
user account is within the file system). Either the logical block device name
or the mount point can be specified as a command-line argument.
The
mountall(1M)
command is used to mount all file systems listed in the
/etc/vfstab
file. This file is also used to determine the file systems to auto-
matically mount during system boot. You can add or remove file systems in
the
/etc/vfstab
file by using any standard text editor. The following code
shows the contents of an
/etc/vfstab
file:
fd - /dev/fd fd - no -
/proc - /proc proc - no -
/dev/dsk/c0t3d0s1 - - swap - no -
/dev/dsk/c0t1d0s0 /dev/rdsk/c0t1d0s0 / ufs 1 no -
/dev/dsk/c0t1d0s7 /dev/rdsk/c0t1d0s7 /home ufs 2 yes -
swap - /tmp tmpfs - yes -
$
Table 7.7 lists the (tab-separated) fields of an entry in the
/etc/vfstab
file. A
hyphen (-) is used to indicate no entry in a field.
