---
source: cli/tests/help.rs
expression: text
---
Show detailed information about internal allocations in devices
For each device, prints the total device size, the "slack" (difference between
the physical block device size and the size btrfs uses), per-profile chunk
allocations (Data, Metadata, System), and unallocated space. Requires
CAP_SYS_ADMIN for the chunk tree walk.
Usage: usage [OPTIONS] <PATHS>...
Arguments:
<PATHS>...
Path(s) to a mounted btrfs filesystem
Options:
-b, --raw
Show raw numbers in bytes
--human-readable
Show human-friendly numbers using base 1024 (default)
-H
Show human-friendly numbers using base 1000
--iec
Use 1024 as a base (KiB, MiB, GiB, TiB)
--si
Use 1000 as a base (kB, MB, GB, TB)
-k, --kbytes
Show sizes in KiB, or kB with --si
-m, --mbytes
Show sizes in MiB, or MB with --si
-g, --gbytes
Show sizes in GiB, or GB with --si
-t, --tbytes
Show sizes in TiB, or TB with --si
-h, --help
Print help (see a summary with '-h')