TLDR
Enter a command. For example: newgrp, cfdisk, edquota, wl paste.

btrfs rescue

 
Try to recover a damaged btrfs filesystem. More information: https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-rescue.
 
  • Rebuild the filesystem metadata tree (very slow):
     
    sudo btrfs rescue chunk-recover {{path/to/partition}}
     
  • Fix device size alignment related problems (e.g. unable to mount the filesystem with super total bytes mismatch):
     
    sudo btrfs rescue fix-device-size {{path/to/partition}}
     
  • Recover a corrupted superblock from correct copies (recover the root of filesystem tree):
     
    sudo btrfs rescue super-recover {{path/to/partition}}
     
  • Recover from an interrupted transactions (fixes log replay problems):
     
    sudo btrfs rescue zero-log {{path/to/partition}}
     
  • Create a /dev/btrfs-control control device when mknod is not installed:
     
    sudo btrfs rescue create-control-device

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