title: Btrfs data recovery
body: <p>I have formated an encrypted disk, containing a LVM with a btrfs system. </p>
  
  <p>All superblocks appear to be destroyed; the btrfs-progs tools can't find the root tree anymore and scalpel, binwalk, foremost &amp; co return only scrap. 
  The filesystem was on an ssd and mounted with -o compression=lzo. </p>
  
  <p>How screwed am I? Any chances to recover some files? 
  Is there a plausible way to rebuild the superblock manually? Checking the raw image with xxd gives me not a single readable word. </p>
  
  <p>I managed to decrypt the LV and dd it to an image. What can I do?</p>