diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-05-10 00:06:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-05-10 00:06:52 -0700 |
| commit | 28d627fb4572b378063f58dd533487bdb1ca67a6 (patch) | |
| tree | fe84d378c357b55f9544bc5c3b71f3c2cf0abef7 /Documentation | |
| parent | 9828805c649d2753c7e83e5ac55d0c4156719cca (diff) | |
| download | history-28d627fb4572b378063f58dd533487bdb1ca67a6.tar.gz | |
[PATCH] update Documentation/md.txt
From: <spam@altium.nl> (Dick Streefland)
The following patch documents the currently undocumented raid= kernel
parameter.
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/md.txt | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt index 203231307a2606..3fb3b1ef18fb9c 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -2,6 +2,8 @@ Tools that manage md devices can be found at 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 superblocks: 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 <HarryH@Royal.Net>) looks like this: 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 |