compsize(8) btrfs compsize(8) (NAME) compsize - btrfs (SYNOPSIS) compsize file-or-dir [ file-or-dir ... ] (DESCRIPTION) compsize btrfs ( ) . compsize (reflink cp --reflink deduplication) btrfs . : Processed 90319 files. Type Perc Disk Usage Uncompressed Referenced TOTAL 79% 1.4G 1.8G 1.9G none 100% 1.0G 1.0G 1.0G lzo 53% 446M 833M 843M : Type . Perc ( ). Disk Usage ( RAID). Uncompressed - (deduplication) (pinned). Referenced ( holes) (tail packing) tar -S . : A . B . : +-------+-------+---------------+ extent A | used | waste | used | +-------+-------+---------------+ extent B | used | +-------+ (waste) A ( defrag) . . : Disk Usage: 8KB Uncompressed: 160K Referenced: 128K. (OPTIONS) -b / --bytes . -x / --one-file-system . (SIGNALS) USR1 . (CAVEATS) (sync) . (ioctls) (root) . (Inline extents) . - btrfs . btrfs 2017-09-04 compsize(8)