The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
To modify the behavior of mount, use the
-o flag followed by a comma-separated list of
options or specify the options in the
/etc/fstab
file. The following are some of
the options that are available:
-
auto
Allows the file system to be mounted automatically by using the mount -a command.
-
exec
Allows the execution of any binary files located in the file system.
-
loop
Uses a loop device (
/dev/loop*
) to mount a file that contains a file system image. See Section 19.5, “Mounting a File Containing a File System Image”, Section 19.6, “Creating a File System on a File”, and thelosetup(8)
manual page.NoteThe default number of available loop devices is 8. You can use the kernel boot parameter
max_loop=
to configure up to 255 devices. Alternatively, add the following entry toN
/etc/modprobe.conf
:options loop max_loop=
N
where
N
is the number of loop devices that you require (from 0 to 255), and reboot the system.-
noauto
Disallows the file system from being mounted automatically by using mount -a.
-
noexec
Disallows the execution of any binary files located in the file system.
-
nouser
Disallows any user other than
root
from mounting or unmounting the file system.-
remount
Remounts the file system if it is already mounted. You would usually combine this option with another option such as
ro
orrw
to change the behavior of a mounted file system.-
ro
Mounts a file system as read-only.
-
rw
Mounts a file system for reading and writing.
-
user
Allows any user to mount or unmount the file system.
For example, mount /dev/sdd1
as
/test
with read-only access and only root
permitted to mount or unmount the file system:
# mount -o nouser,ro /dev/sdd1 /test
Mount an ISO image file on /mount/cdrom
with
read-only access by using the loop device:
# mount -o ro,loop ./OracleLinux-R6-U1-Server-x86_64-dvd.iso /media/cdrom
Remount the /test
file system with both read
and write access, but do not permit the execution of any binary
files that are located in the file system:
# mount -o remount,rw,noexec /test