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How To Set Up Software RAID1 On A Running System (Incl. GRUB2 Configuration) (Ub

By Falko Timme

[ Thanks to Falko
Timme for this link. ]

“1 Preliminary Note

“In this tutorial I’m using an Ubuntu 10.04 system with two hard
drives, /dev/sda and /dev/sdb which are identical in size. /dev/sdb
is currently unused, and /dev/sda has the following partitions:

* /dev/sda1: /boot partition, ext4;
* /dev/sda2: swap;
* /dev/sda3: / partition, ext4

In the end I want to have the following situation:
* /dev/md0 (made up of /dev/sda1 and /dev/sdb1): /boot partition,
ext4;
* /dev/md1 (made up of /dev/sda2 and /dev/sdb2): swap;
* /dev/md2 (made up of /dev/sda3 and /dev/sdb3): / partition,
ext4″


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