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Subject[PATCH] md: Documentation/md.txt update
Date
Update status of superblock formats and fix misspellings in Documentation/md.txt

Signed-off-by: James Nelson <james4765@gmail.com>

diff -urN --exclude='*~' linux-2.6.9-original/Documentation/md.txt linux-2.6.9/Documentation/md.txt
--- linux-2.6.9-original/Documentation/md.txt 2004-10-18 17:54:38.000000000 -0400
+++ linux-2.6.9/Documentation/md.txt 2004-11-08 23:06:51.131605977 -0500
@@ -55,13 +55,13 @@
------------------

The md driver can support a variety of different superblock formats.
-(It doesn't yet, but it can)
+Currently, it supports superblock formats "0.90.0" and the "md-1" format
+introduced in the 2.5 development series.

-The kernel does *NOT* autodetect which format superblock is being
-used. It must be told.
+The kernel will autodetect which format superblock is being used.

Superblock format '0' is treated differently to others for legacy
-reasons.
+reasons - it is the original superblock format.


General Rules - apply for all superblock formats
@@ -69,6 +69,7 @@

An array is 'created' by writing appropriate superblocks to all
devices.
+
It is 'assembled' by associating each of these devices with an
particular md virtual device. Once it is completely assembled, it can
be accessed.
@@ -76,10 +77,10 @@
An array should be created by a user-space tool. This will write
superblocks to all devices. It will usually mark the array as
'unclean', or with some devices missing so that the kernel md driver
-can create approrpriate redundancy (copying in raid1, parity
+can create appropriate redundancy (copying in raid1, parity
calculation in raid4/5).

-When an array is assembled, it is first initialised with the
+When an array is assembled, it is first initialized with the
SET_ARRAY_INFO ioctl. This contains, in particular, a major and minor
version number. The major version number selects which superblock
format is to be used. The minor number might be used to tune handling
@@ -101,15 +102,16 @@


Specific Rules that apply to format-0 super block arrays, and
- arrays with no superblock (non-persistant).
+ arrays with no superblock (non-persistent).
-------------------------------------------------------------

An array can be 'created' by describing the array (level, chunksize
etc) in a SET_ARRAY_INFO ioctl. This must has major_version==0 and
raid_disks != 0.
-Then uninitialised devices can be added with ADD_NEW_DISK. The
+
+Then uninitialized devices can be added with ADD_NEW_DISK. The
structure passed to ADD_NEW_DISK must specify the state of the device
and it's role in the array.

-One started with RUN_ARRAY, uninitialised spares can be added with
+One started with RUN_ARRAY, uninitialized spares can be added with
HOT_ADD_DISK.
-
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