Title: Disk mirrors on SuSE7.3
Subject: Raid 1+0 on Linux

man raidtab
man raidstart
man raidstop

# other systems use mdmm command
man
  raidstart(8), raid0run(8), mkraid(8), raidstop(8) raidtab (5)

file://localhost/usr/share/doc/packages/raidtools/Software-RAID.HOWTO-2.html
N = Number of active disks in the array.
S = Size of smallest drive in array.
P = Performance, in Mb/second, of one disk.


#############################################
<<<< sample /etc/raidtab file >>>>
#
# persistent RAID1 array
#
raiddev /dev/md2
    raid-level                1
    nr-raid-disks             2
    nr-spare-disks            1
    persistent-superblock     1
    chunk-size                4

    device                    /dev/sda1
    raid-disk                 0
    device                    /dev/sdb1
    raid-disk                 1
<<<< sample /etc/raidtab file >>>>

#############################################
# Find the verson 
sf1lsdmz:~ # rpm -q raidtools
raidtools-0.90-124

#############################################
# enable the RAID 1 in the kenrel source
uname -a
  Linux sf1lsdmz 2.4.10-64GB-SMP #1 SMP Fri Sep 28 17:26:36 GMT 2001 i686 unknown
#use yast to get kernel source:
  rpm -i kernel-source-2.4.10.SuSE-18.i386.rpm
cd /usr/src/linux
make mrproper
make cloneconfig
make menuconfig
-> Loadable module support <--
-->[*]Set version information on all symbols for modules <--

-> Multi-device support (RAID and LVM)  --->
--><*>   RAID-1 (mirroring) mode
make dep
make kernel
vi /etc/rc.config
-> checkin INITRD="aic7xxx reiserfs"
/sbin/SuSEconfig 
mk_initrd
lilo -v mds	

# 
##############################################
# The kernel itself can stripe swapping on several devices,  
# for swap, edit /etc/fstab
  /dev/sda2       swap           swap    defaults,pri=1   0 0
  /dev/sdb2       swap           swap    defaults,pri=1   0 0

ls -laF /proc/mdstat