[CentOS] Convert "bare partition" to RAID1 / mdadm?

You can also try this:
1- Convert your ext4 partition to btrfs.
2- Make raid1 with btrfs. With btrfs you can convert a "bare partition" 
to almost any raid level, with the proper hard disk amount.


>>> So... is it possible to convert an EXT4 partition to a RAID1 partition
>>> without having to copy the files over?
>>