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 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.

       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, 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.

       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 © 2004, 2010 Oracle. All rights reserved.