Module space 

Block group space usage: how much space each chunk type allocates and uses

Reports the allocated and used byte counts for each combination of block group type (data, metadata, system) and RAID profile. This is the data underlying the btrfs filesystem df command.

Structs

BlockGroupFlags

Flags describing the type and RAID profile of a btrfs block group.

SpaceInfo

Space usage information for one block group type/profile combination.

Functions

space_info

Query space usage by block group type for the filesystem referred to by fd.