[PATCH] OCFS2: The Second Oracle Cluster Filesystem

The OCFS2 file system module.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>

2 files changed, 57 insertions, 0 deletions

diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index d9b0a069186..2580ada100a 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -36,6 +36,8 @@ ntfs.txt
         - info and mount options for the NTFS filesystem (Windows NT).
 proc.txt
         - info on Linux's /proc filesystem.
+ocfs2.txt
+        - info and mount options for the OCFS2 clustered filesystem.
 romfs.txt
         - Description of the ROMFS filesystem.
 smbfs.txt
diff --git a/Documentation/filesystems/ocfs2.txt b/Documentation/filesystems/ocfs2.txt
new file mode 100644
index 00000000000..f2595caf052
--- /dev/null
+++ b/Documentation/filesystems/ocfs2.txt
@@ -0,0 +1,55 @@
+OCFS2 filesystem
+==================
+OCFS2 is a general purpose extent based shared disk cluster file
+system with many similarities to ext3. It supports 64 bit inode
+numbers, and has automatically extending metadata groups which may
+also make it attractive for non-clustered use.
+
+You'll want to install the ocfs2-tools package in order to at least
+get "mount.ocfs2" and "ocfs2_hb_ctl".
+
+Project web page:    http://oss.oracle.com/projects/ocfs2
+Tools web page:      http://oss.oracle.com/projects/ocfs2-tools
+OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
+
+All code copyright 2005 Oracle except when otherwise noted.
+
+CREDITS:
+Lots of code taken from ext3 and other projects.
+
+Authors in alphabetical order:
+Joel Becker   <joel.becker@oracle.com>
+Zach Brown    <zach.brown@oracle.com>
+Mark Fasheh   <mark.fasheh@oracle.com>
+Kurt Hackel   <kurt.hackel@oracle.com>
+Sunil Mushran <sunil.mushran@oracle.com>
+Manish Singh  <manish.singh@oracle.com>
+
+Caveats
+=======
+Features which OCFS2 does not support yet:
+        - sparse files
+        - extended attributes
+        - shared writeable mmap
+        - loopback is supported, but data written will not
+          be cluster coherent.
+        - quotas
+        - cluster aware flock
+        - Directory change notification (F_NOTIFY)
+        - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
+        - POSIX ACLs
+        - readpages / writepages (not user visible)
+
+Mount options
+=============
+
+OCFS2 supports the following mount options:
+(*) == default
+
+barrier=1               This enables/disables barriers. barrier=0 disables it,
+                        barrier=1 enables it.
+errors=remount-ro(*)    Remount the filesystem read-only on an error.
+errors=panic            Panic and halt the machine if an error occurs.
+intr            (*)     Allow signals to interrupt cluster operations.
+nointr                  Do not allow signals to interrupt cluster
+                        operations.