TLDR
Enter a command. For example: gsettings, mate search tool.

btrfs check

 
Check or repair a btrfs filesystem. More information: https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-check.
 
  • Check a btrfs filesystem:
     
    sudo btrfs check {{path/to/partition}}
     
  • Check and repair a btrfs filesystem (dangerous):
     
    sudo btrfs check --repair {{path/to/partition}}
     
  • Show the progress of the check:
     
    sudo btrfs check --progress {{path/to/partition}}
     
  • Verify the checksum of each data block (if the filesystem is good):
     
    sudo btrfs check --check-data-csum {{path/to/partition}}
     
  • Use the n-th superblock (n can be 0, 1 or 2):
     
    sudo btrfs check --super {{n}} {{path/to/partition}}
     
  • Rebuild the checksum tree:
     
    sudo btrfs check --repair --init-csum-tree {{path/to/partition}}
     
  • Rebuild the extent tree:
     
    sudo btrfs check --repair --init-extent-tree {{path/to/partition}}

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