I believe Synology runs btrfs on top of regular mdraid + lvm, possibly with patches to let btrfs checksum failures reach into the underlying layers to find the

I believe Synology runs btrfs on top of regular mdraid + lvm, possibly with patches to let btrfs checksum failures reach into the underlying layers to find the right data to recover. Related blog post: https://daltondur.st/syno_btrfs_1/ https://daltondur.st/syno_btrfs_1/