openfreemap/docs/fs_stats/btrfs_before_delete.md

deduplicated on BTRFS

After extration, but before deleting the dedupl folder.

creation params

mkfs.btrfs -m single
mount -o noacl,nobarrier,noatime,max_inline=4096

df

df -h mnt_rw
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop3      300G  139G  161G  47%

btrfs

btrfs filesystem df mnt_rw
Data, single: total=48.01GiB, used=47.45GiB
System, single: total=4.00MiB, used=16.00KiB
Metadata, single: total=92.01GiB, used=90.37GiB
GlobalReserve, single: total=512.00MiB, used=0.00B

btrfs filesystem du -s mnt_rw
     Total   Exclusive  Set shared  Filename
  47.45GiB    47.45GiB       0.00B  mnt_rw

btrfs filesystem show mnt_rw
	Total devices 1 FS bytes used 137.81GiB
	devid    1 size 300.00GiB used 140.02GiB path /dev/loop3

btrfs filesystem usage mnt_rw
Overall:
    Device size:		 300.00GiB
    Device allocated:		 140.02GiB
    Device unallocated:		 159.98GiB
    Device missing:		     0.00B
    Used:			 137.81GiB
    Free (estimated):		 160.54GiB	(min: 160.54GiB)
    Free (statfs, df):		 160.54GiB
    Data ratio:			      1.00
    Metadata ratio:		      1.00
    Global reserve:		 512.00MiB	(used: 0.00B)
    Multiple profiles:		        no

Data,single: Size:48.01GiB, Used:47.45GiB (98.83%)
   /dev/loop3	  48.01GiB

Metadata,single: Size:92.01GiB, Used:90.37GiB (98.22%)
   /dev/loop3	  92.01GiB

System,single: Size:4.00MiB, Used:16.00KiB (0.39%)
   /dev/loop3	   4.00MiB

Unallocated:
   /dev/loop3	 159.98GiB

compsize

compsize -x mnt_rw
Processed 308790063 files, 3458682 regular extents (6917363 refs), 301872700 inline.
Type       Perc     Disk Usage   Uncompressed Referenced  
TOTAL      100%      118G         118G         165G       
none       100%      118G         118G         165G