On 04/29/2017 11:56 AM, Andreas Klauer wrote:

On Sat, Apr 29, 2017 at 12:46:15AM +0200, Patrik Dahlström wrote:
You could create the RAID first and the overlay afterwards.
Or you can create loop devices on the busy devices and use those.

I solved it by creating loop devices and use dd. I let it finish, then
ran fsck and resize2fs on the partition and now my data is back!

Thank you all for your invaluable help!

Would it be worth it for me to write up an article on the wiki on how to
re-create messed up metadata?

Best regards
// Patrik