USE METHODS AT YOUR OWN RISK, IF YOU DECIDE TO USE THIS ARTICLE, HEED ALL OF THE SAFETY MEASURE (IF I MISSED A SAFETY MEASURE, DONT BLAME ME, I SAID USE AT YOUR OWN RISK)

To check if you need to upgrade your btrfs-tools, just run btrfsck –help and look at the options, if you have like no options then update it as you are behind

BEHIND – need to update:

btrfsck --help
btrfsck: unrecognized option '--help'
usage: btrfsck dev
Btrfs v0.20-rc1

CAUGHT UP – good to go (might still have newer versions out there, run btrfs without any options to see version number):

btrfsck --help
usage: btrfs check [options] <device>
    Check an unmounted btrfs filesystem.
    -s|--super <superblock>     use this superblock copy
    --repair                    try to repair the filesystem
    --init-csum-tree            create a new CRC tree
    --init-extent-tree          create a new extent tree
    --fix-crc                   try to fix bad CRCs

Note: I assume your volume is called /dev/sda3

To do a readonly harmless check (this is in both old and new btrfsck version, just run it without parameters):

# btrfsck /dev/sda3

To fix checksum issues use –fix-crc like this:

# btrfsck --fix-crc /dev/sda3

To fix other general issues:

# btrfsck --repair /dev/sda3

NOTE: Beware first I would try mount options, this btrfsck might just blend up your situation to a worse situation so try the “restore mounts” first followed by “btrfs restore”, if the data is not critical then just try the repair: CLICK HERE FOR THAT ARTICLE

TIP: have your swap mounted, lots of ram is a plus

TO GET LATEST TOOLS:

Go HERE