- Setup SoftwareRAID for the CoreOS root partition without data-loss.
- Only for ext4!
- The Trick is to use the right volume label and fs-types :)
- We assume CoreOS is on
/dev/sdaX
and the second RAID Device is/dev/sdb
- Drawback: only
/
gets mirrored, Node goes down when sda fails
- Boot into any recovery system like Grml
- If not already done: install CoreOS