I've had a BTRFS RAID set consisting of three (dissimilar) disks for some time now, and it's worked fine.
Unfortunately, due to an unwise experiment on my part, a rogue Windows 7 install dvd added a partition to one of the disks (okay, actually to two of the disks, on two different attempts). Is there any way I can repair the disk(s)? The partitions are fairly small, 100MB on a 2TB disk and 100MB on a 4TB disk. The third disk (also 4TB) is undamaged.
I've tried "sudo btrfs rescue chunk-recover /dev/sda" but that didn't fix things. I've also tried "sudo btrfs check /dev/sda" but haven't yet tried to do a repair, for fear of making things worse.
I can work on a "dd" image of the 2TB disk, but I don't have any place to image the 4TB disk to.
Any help would be greatly appreciated. Step-by-step, or even just pointers to appropriate information, please!
