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gerasimos_h Site Admin Joined: 09 Aug 2007 Posts: 1753 Location: Greece
Posted: Sun Jan 02, 2011 9:41 pm Post subject: RAID Setup on SMS
All the info about this how to is documented already by slackware team at
but let's make it as simpler as we can.
Once you boot with SMS.Native.CD-Install-1.x.x.iso before you run setup
you need to partition your disk.
On this example I used
Code: /dev/sda1 * 63 14651279 7325608+ 83 Linux
/dev/sda2 14651280 16771859 1060290 82 Linux swap
1. Prepare disks for RAID 1 Array (clone /dev/sda to /dev/sdb)
Code: sfdisk -d /dev/sda | sfdisk /dev/sdb
2. Create RAID 1 Array for root partition
Code: mdadm --create /dev/md0 --level 1 --raid-devices 2 /dev/sda1 /dev/sdb1
3. Create RAID 1 Array for swap partition
Code: mdadm --create /dev/md1 --level 1 --raid-devices 2 /dev/sda2 /dev/sdb2
4. Setup swap area
5. Create RAID 5 Array for home partition
Code: mdadm --create /dev/md2 --level 5 --raid-devices 3 /dev/sdc /dev/sdd /dev/sde
Start setup and choose as swap partition /dev/md1, choose as root partition /dev/md0, for home /dev/md2.
Ignore partition /dev/sd[ab]1 /dev/sd[ab]2 and continue with setup.
When it's time to choose a kernel choose a generic one, since huge kernels complains with initrd images, although they may work just fine.
When setup finish don't reboot your server.
You need to chroot to your newly system
And edit /etc/lilo.conf to something like
raid-extra-boot = mbr-only
boot = /dev/md0
timeout = 30
vga = 791
image = /boot/vmlinuz
root = /dev/md0
label = SMS
initrd = /boot/initrd.gz
The most important is to create the initrd image with
Code: mkinitrd -c -k 18.104.22.168-smp -m ext4 -f ext4 -r /dev/md0 -R
-k your kernel
-m your modules (-m ext3,ext4,reiserfs you might need a controller)
-f root filesystem
-r root partition
-R add support for RAID in initrd.
SMS generic kernels have built in support for ext2 ext3 ext4 and jfs.
run lilo and ignore the warnings.
exit and reboot your server.
-Using a huge kernel-
You can use a huge kernel without an initrd.bz if you like but to recognize raid arrays at boot you need to edit /etc/rc.d/rc.S and add between udev and lvm
Code: progressbar 10
# Re-assemble RAID volumes:
And final type to add your arrays in mdadm.conf
Code: mdadm -Es >> /etc/mdadm.conf
-Notification of degraded arrays -
You can add in your /etc/rc.d/rc.local
Code: /sbin/mdadm -Ff /dev/md[0-9] -i /var/run/mdadm.pid
So by adding your mail address in /etc/mdadm.conf, you will be notified when arrays get degraded.
Or you can have it all in one line
Code: /sbin/mdadm -Ff /dev/md[0-9] -i /var/run/mdadm.pid -m root@locahost
- Video Tutorial -
You can download the video in .mkv format.
gerasimos_h _________________ Superb! Mini Server Project Manager
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