mount.ocfs2(8)							OCFS2 Manual Pages						    mount.ocfs2(8)

NAME

       mount.ocfs2 -  mount an OCFS2 filesystem

SYNOPSIS

       mount.ocfs2 [-vn] [-o options] device dir

DESCRIPTION

       mount.ocfs2 mounts an OCFS2 filesystem at dir. It is usually invoked indirectly by the mount(8) command when using the -t ocfs2 option.

OPTIONS

       _netdev
	      The  filesystem resides on a device that requires network access (used to prevent the system from attempting to mount these filesys-
	      tems 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.

       atime_quantum=nrsec
	      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.

       relatime
	      The file system only update atime if the previous atime is older than mtime or ctime.

       noatime
	      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.

       commit=nrsec
	      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.

		   ordered
			  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.

		   writeback
			  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 recovery.

       datavolume
	      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,  filesys-
	      temio_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.

       localflocks
	      This disables cluster-aware flock(2).

       intr / nointr
	      The default is intr that allows signals to interrupt cluster operations.	nointr disables signals during cluster operations.

       ro     Mount the file system read-only.

       rw     Mount the file system read-write.

SEE ALSO

       mkfs.ocfs2(8) fsck.ocfs2(8) tunefs.ocfs2(8) mounted.ocfs2(8) debugfs.ocfs2(8) o2cb(7)

AUTHORS

       Oracle Corporation

COPYRIGHT

       Copyright (C) 2004, 2010 Oracle. All rights reserved.

Version 1.4.3							   February 2010						    mount.ocfs2(8)