fstab

# /dev/sda2 UUID=22617c40-a25f-440e-99bf-050edfdcd822
LABEL=ROOT              /           btrfs       rw,noatime,compress=lzo,ssd,space_cache,subvol=/@snapshots/TESTING  0 0

# /dev/sda1 UUID=adcfbcd8-897e-47e7-8a21-04a6642d2926
LABEL=BOOT              /boot       ext4        rw,relatime 0 2

# /dev/sda2 UUID=22617c40-a25f-440e-99bf-050edfdcd822
LABEL=ROOT              /home       btrfs       rw,noatime,compress=lzo,ssd,space_cache,subvol=/@home   0 0

# /dev/sda2 UUID=22617c40-a25f-440e-99bf-050edfdcd822
LABEL=ROOT              /btrfs      btrfs       rw,noatime,compress=lzo,ssd,space_cache,subvolid=5  0 0

# /dev/sda2 UUID=22617c40-a25f-440e-99bf-050edfdcd822
LABEL=ROOT              /.snapshots btrfs       rw,noatime,compress=lzo,ssd,space_cache,subvol=/@snapshots  0 0

# /dev/sda2 UUID=22617c40-a25f-440e-99bf-050edfdcd822
LABEL=ROOT              /var/cache/pacman/pkg   btrfs   rw,noatime,compress=lzo,ssd,space_cache,subvol=/@pkg    0 0

# /dev/sda3 UUID=b26a9810-408d-4dd6-8e20-4a9bb874477a
LABEL=SWAP              none        swap        defaults    0 0