gistfile1.txt

liam@liam-kub:~$ sudo btrfs filesystem usage /mnt/storage
Overall:
    Device size:                 931.51GiB
    Device allocated:            914.51GiB
    Device unallocated:           17.00GiB
    Device missing:                  0.00B
    Device slack:                    0.00B
    Used:                        397.55GiB
    Free (estimated):            529.16GiB      (min: 529.16GiB)
    Free (statfs, df):           529.16GiB
    Data ratio:                       1.00
    Metadata ratio:                   1.00
    Global reserve:              512.00MiB      (used: 0.00B)
    Multiple profiles:                  no

Data,single: Size:908.50GiB, Used:396.34GiB (43.63%)
   /dev/sda1     908.50GiB

Metadata,single: Size:6.01GiB, Used:1.21GiB (20.10%)
   /dev/sda1       6.01GiB

System,single: Size:4.00MiB, Used:128.00KiB (3.12%)
   /dev/sda1       4.00MiB

Unallocated:
   /dev/sda1      17.00GiB
liam@liam-kub:~$ sudo btrfs filesystem usage /mnt/storage3
Overall:
    Device size:                 931.51GiB
    Device allocated:            897.51GiB
    Device unallocated:           34.00GiB
    Device missing:                  0.00B
    Device slack:                    0.00B
    Used:                        659.68GiB
    Free (estimated):            263.04GiB      (min: 246.04GiB)
    Free (statfs, df):           263.04GiB
    Data ratio:                       1.00
    Metadata ratio:                   2.00
    Global reserve:              512.00MiB      (used: 0.00B)
    Multiple profiles:                  no

Data,single: Size:885.50GiB, Used:656.45GiB (74.13%)
   /dev/sdb1     885.50GiB

Metadata,DUP: Size:6.00GiB, Used:1.61GiB (26.89%)
   /dev/sdb1      12.00GiB

System,DUP: Size:8.00MiB, Used:128.00KiB (1.56%)
   /dev/sdb1      16.00MiB

Unallocated:
   /dev/sdb1      34.00GiB