Установка на Soft RAID 1

Boot time assembly of RAID arrays
---------------------------------

You can boot with your md device with the following kernel command
lines:

for old raid arrays without persistent superblocks:
md=,,,,dev0,dev1,...,devn

for raid arrays with persistent superblocks
md=,dev0,dev1,...,devn
or, to assemble a partitionable array:
md=d,dev0,dev1,...,devn

md device no. = the number of the md device ...
0 means md0,
1 md1,
2 md2,
3 md3,
4 md4

raid level = -1 linear mode
0 striped mode
other modes are only supported with persistent super blocks

chunk size factor = (raid-0 and raid-1 only)
Set the chunk size as 4k << n.

fault level = totally ignored

dev0-devn: e.g. /dev/hda1,/dev/hdc1,/dev/sda1,/dev/sdb1

A possible loadlin line (Harald Hoyer ) 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". As of kernel 2.6.9, only drives with a type 0
superblock can be autodetected and run at boot time.

The kernel parameter "raid=partitionable" (or "raid=part") means
that all auto-detected arrays are assembled as partitionable.