From: spam@altium.nl (Dick Streefland)
To: linux-kernel@vger.kernel.org
Subject: [PATCH] update Documentation/md.txt
Date: Tue, 04 May 2004 13:40:37 -0000 [thread overview]
Message-ID: <4769.40979d55.46f00@altium.nl> (raw)
The following patch documents the currently undocumented raid= kernel
parameter:
--- linux-2.6.5/Documentation/md.txt.orig 2003-12-18 03:59:05.000000000 +0100
+++ linux-2.6.5/Documentation/md.txt 2004-05-04 15:35:34.000000000 +0200
@@ -2,6 +2,8 @@ Tools that manage md devices can be foun
http://www.<country>.kernel.org/pub/linux/utils/raid/....
+Boot time assembly of RAID arrays
+---------------------------------
You can boot with your md device with the following kernel command
lines:
@@ -11,6 +13,8 @@ for old raid arrays without persistent s
for raid arrays with persistent superblocks
md=<md device no.>,dev0,dev1,...,devn
+or, to assemble a partitionable array:
+ md=d<md device no.>,dev0,dev1,...,devn
md device no. = the number of the md device ...
0 means md0,
@@ -34,7 +38,22 @@ A possible loadlin line (Harald Hoyer <H
e:\loadlin\loadlin e:\zimage root=/dev/md0 md=0,0,4,0,/dev/hdb2,/dev/hdc3 ro
--------------------------------
+
+Boot time autodetection of RAID arrays
+--------------------------------------
+
+When md is compiled into the kernel (not as module), partitions of
+type 0xfd are scanned and automatically assembled into RAID arrays.
+This autodetection may be suppressed with the kernel parameter
+"raid=noautodetect".
+
+The kernel parameter "raid=partitionable" (or "raid=part") means
+that all auto-detected arrays are assembled as partitionable.
+
+
+Superblock formats
+------------------
+
The md driver can support a variety of different superblock formats.
(It doesn't yet, but it can)
@@ -82,7 +101,7 @@ array using HOT_REMOVE_DISK.
Specific Rules that apply to format-0 super block arrays, and
- arrays with no superblock (non-presistant).
+ arrays with no superblock (non-persistant).
-------------------------------------------------------------
An array can be 'created' by describing the array (level, chunksize
--
Dick Streefland //// Altium BV
dick.streefland@altium.nl (@ @) http://www.altium.com
--------------------------------oOO--(_)--OOo---------------------------
reply other threads:[~2004-05-04 13:41 UTC|newest]
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