btrfs-gui

Sun, May 15, 2011

The usage display shows, graphically, what space has been allocated and used. The topmost box by default shows only what has been allocated by the filesystem – this may be only a fraction of the total space available. Where data is replicated (RAID-1, RAID-10 or DUP), only the size of the actual data is shown, not the total of all copies of it. (i.e. 10GiB of RAID-1 data is shown as 10GiB, not as 20GiB). The boxes underneath show the disk space used on each of the devices underlying the filesystem.

The striped sections show allocated but unused space; the black section at the beginning of each block is the system data.

The subvolume display lists all of the subvolumes of the filesystem. Subvolumes can be created from the “Subvolumes → New” menu, and deleted by selecting a subvolume in the list and using “Subvolumes → Delete”, or right-clicking to bring up a context menu, and selecting “Delete”.