Work with free region sizes instead of parted.Geometry objects
Work with free region sizes instead of parted.Geometry objects

Related: rhbz#978266

rvykydal/blivet,vpodzime/blivet,jkonecny12/blivet,rhinstaller/blivet,vojtechtrefny/blivet,rvykydal/blivet,jkonecny12/blivet,AdamWill/blivet,AdamWill/blivet,dwlehman/blivet,rhinstaller/blivet,vpodzime/blivet,vojtechtrefny/blivet,dwlehman/blivet