I have a client who needed a nice little web design station using open source software. One of the requirements is to have RAID. So, having used linux software RAID for about 10 years now, I am very comfortable with it. Unfortunately the installer in Ubuntu Intrepid does not seem to have support for configuring the software RAID, LVM, Encryption and all that rot.
So let’s do it from the terminal, Install as normal and then use the following process.
Change the partition types on your disk to 0xfd. I reconfigured /dev/sda as follows:
root@ubuntu:~# fdisk -l /dev/sda Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x965c0f26 Device Boot Start End Blocks Id System /dev/sda1 * 1 20 160618+ fd Linux raid autodetect /dev/sda2 21 60000 481789350 fd Linux raid autodetect /dev/sda3 60001 60801 6434032+ 83 Linux root@ubuntu:~#
Then copy that partition table to /dev/sdb
dd if=/dev/sda of=/dev/sdb count=1 bs=512
Now reboot, or Call “Call ioctl() to re-read partition table.”
Now it’s time to install mdadm
apt-get -f -y install mdadm
And finally, setup the RAID
mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdb1 mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sda2 /dev/sdb2
Verify the raid status with:
cat /proc/mdstat
Change the /etc/fstab
instead of LABEL=blahblah
change to /dev/md0
I’m sorry, this is incomplete
R