OPTIONS
-------
-*-A|--alloc-start <offset>*::
-(An option to help debugging chunk allocator.)
-Specify the (physical) offset from the start of the device at which allocations
-start. The default value is zero.
-
*-b|--byte-count <size>*::
Specify the size of the filesystem. If this option is not used,
mkfs.btrfs uses the entire device space for the filesystem.
*--help*::
Print help.
+*-A|--alloc-start <offset>*::
+*deprecated, will be removed*
+(An option to help debugging chunk allocator.)
+Specify the (physical) offset from the start of the device at which allocations
+start. The default value is zero.
+
SIZE UNITS
----------
The default unit is 'byte'. All size parameters accept suffixes in the 1024