Section: OCFS2 Manual Pages (8)Updated: September 2010Local indexUp
mount.ocfs2 - mount an OCFS2 filesystem
mount.ocfs2 [-vn] [-o options] devicedir
mount.ocfs2 mounts an OCFS2 filesystem at dir. It is usually
invoked indirectly by the mount(8) command when using the -t ocfs2 option.
The filesystem resides on a device that requires network access (used to prevent
the system from attempting to mount these filesystems until the network has
been enabled on the system). mount.ocfs2 transparently appends this option
during mount. However, users mounting the volume via /etc/fstab must explicitly
specify this mount option to delay the system from mounting the volume until
after the network has been enabled.
The file system will not update atime unless this number of seconds has passed
since the last update. Set to zero to always update atime. It defaults to 60 secs.
The file system only update atime if the previous atime is older than mtime or ctime.
The file system will not update access time.
acl / noacl
Enables / disables POSIX ACLs (Access Control Lists) support.
user_xattr / nouser_xattr
Enables / disables Extended User Attributes.
Sync all data and metadata every nrsec seconds. The default value is 5 seconds.
Zero means default.
data=ordered / data=writeback
Specifies the handling of file data during metadata journalling.
This is the default mode. All data is forced directly out to the main file
system prior to its metadata being committed to the journal.
Data ordering is not preserved - data may be written into the main file system
after its metadata has been committed to the journal. This is rumored to be
the highest-throughput option. While it guarantees internal file system
integrity, it can allow old data to appear in files after a crash and journal
This mount option has been deprecated in OCFS2 1.6. It has been used
in the past (OCFS2 1.2 and OCFS2 1.4), to force the Oracle RDBMS to
issue direct IOs to the hosted data files, control files, redo logs, archive logs,
voting disk, cluster registry, etc. It has been deprecated because it is no longer
required. Oracle RDBMS users should instead use the init.ora parameter,
filesystemio_options, to enable direct IOs.
errors=remount-ro / errors=panic
Define the behavior when an error is encountered. (Either remount the file
system read-only, or panic and halt the system.) By default, the file system
is remounted read only.