#
# 12-Feb-99 amo Installing Raid
# 02-Jul-99 amo Installing Raid patches on linux-2.2.6
# 08-Jul-00 amo Installing raid5 for linux-2.2.16
#
#
# Latest Kernel Patches
# ---------------------
#	http://people.redhat.com/mingo/raid-patches/raid-2.2.16-A0
#
#
# ftp.kernel.org/pub/linux/daemons/raid/alpha: ( OBSOLETE )
#	raid0145-19981110-2.0.35.gz	for linux-2.0.35
#	raid0145-19990128-2.0.36.gz	for linux-2.0.36
#	raid0145-19990128-2.2.0.gz	for linux-2.2.*
#	raid0145-19990421-2.2.6.gz	for linux-2.2.6
#	#
#	# raid tools needed
#	#
#       alpha/raidtools-19990421-0.90.tar.gz ( get these tools too )
#               - configure and make raidtools. (must have patched kernel and done a make first)
#
#
# For additional Raid Info
# ------------------------
#	raid_docs.txt
#
# To Find out what raid packages is loaded
# ----------------------------------------
#	rpm -qa | grep -i raid	( ?? )
#
# To Uninstall a raid package
# ---------------------------
#	rpm -e 'packagename'
#
www:/usr/src# gzip -d  raid0145-19990421-2.2.6.gz
#
#
# Patch the linux kernel at /usr/src NOT /usr/src/linux
#
www:/usr/src# patch -p0 < ../raid0145-19990421-2.2.6
	....
        patching file `linux/fs/proc/root.c'
        patching file `linux/fs/Makefile'
        patching file `linux/fs/block_dev.c'
        patching file `linux/fs/buffer.c'
        patching file `linux/init/main.c'
        patching file `linux/kernel/printk.c'
        patching file `linux/mm/mmap.c'
        ...

#
# Verify your kernel supports md and raid
#
www:/usr/src/linux# make xmenuconfig ( turn ON the following )
	multiple device driver support
	autodetect RAID partitions
	Linear (append) mode
	RAID 0, RAID 1 RAID4/5
	Translucent and
	Logical Volume Maneger Support ( ?? )
	#
	# recompile and install your new kernel w/ raid support
	#
-----------------------
reboot with new kernel w/ md & raid support
--------------------------------------------------------

#
# --------------------------
# now install the raid tools -- AFTER the kernel is patched and installed
# --------------------------
#
#ww:/usr/src# tar zxvf  raidtools-19990128-0.90.tar.gz
www:/usr/src# tar zxvf  raidtools-19990421-0.90.tar.gz

www:/usr/src/raidtools-0.90#  ./configure

www:/usr/src/raidtools-0.90# make
www:/usr/src/raidtools-0.90# make install
www:/usr/src/raidtools-0.90# ls -la /dev/md*

#
# Congratulations...your kernel now has raid support
#
#
#
# ==========================================================================
#
# For mor info on raid commands
# -----------------------------
#	raid_cmd.uhow2
#
#
#
# Create the raid config file
#
wwww#  vi /etc/raidtab
        ---------------
#
www:~# mkraid /dev/md0
	handling MD device /dev/md0
	analyzing super-block
	disk 0: /dev/hdc1, 11255296kB, raid superblock at 11255232kB
	/dev/hdc1 appears to contain an ext2 filesystem -- use -f to override
	mkraid: aborted
	#
	# true since I did mke2fs /dev/hdc1 /dev/hdd1 first
	#
	#
www:~# mkraid --really-force /dev/md0
	DESTROYING the contents of /dev/md0 in 5 seconds, Ctrl-C if unsure!
	handling MD device /dev/md0
	analyzing super-block
	disk 0: /dev/hdc1, 11255296kB, raid superblock at 11255232kB
	disk 1: /dev/hdd1, 11255296kB, raid superblock at 11255232kB
	#
	# mkraid --really-force -c /etc/raid1.conf /dev/md0
	#

www:~# cat /proc/mdstat 
	Personalities : [linear] [raid0] [raid1] 
	read_ahead 1024 sectors
	md0 : active raid1 hdd1[1] hdc1[0] 11255040 blocks [2/2] [UU] resync=3% finish=45.8min
	unused devices: <none>

www:~# mke2fs -c /dev/md0

	raidstart /dev/md0
	raidstart --configfile /etc/raid1.conf  /dev/md0

www:~# e2fsck /dev/md0
	e2fsck 1.12, 9-Jul-98 for EXT2 FS 0.5b, 95/08/09
	/dev/md0: clean, 11/2813952 files, 414962/11255040 blocks

www:~# mount /dev/md0 /Backup

www:~# dd if=/dev/zero of=/Backup/test count=1000000
	www:~# ls -la /Backup
	...
	-rw-r--r--   1 root     root     512000000 Feb 13 13:11 test

www:~# umount /Backup

www:~# raidstop /dev/md0

www:~# cat /proc/mdstat
	Personalities : [linear] [raid0] [raid1] 
	read_ahead 1024 sectors
	unused devices: <none>

www:~# raidstart /dev/md0

www:~# cat /proc/mdstat
	Personalities : [linear] [raid0] [raid1] 
	read_ahead 1024 sectors
	md0 : active raid1 hdd1[1] hdc1[0] 11255040 blocks [2/2] [UU] resync=0% finish=53.3min
	unused devices: <none>

#
# If a drive fails while online:
#
raidhotremove /dev/md0 /dev/sdb2
raidhotadd /dev/md0 /dev/sdb2
#
#
# end of file