This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12345]

storage::CodeLocation	Helper class for UI exceptions: Store BASE_FILE, FUNCTION and LINE
storage::CommitCallbacks
storage::Environment
exception
storage::Exception	Base class for storage exceptions
storage::AlignError
storage::DeviceHasWrongType
storage::DeviceNotFound
storage::DeviceNotFoundByName
storage::DeviceNotFoundBySid
storage::DeviceNotFoundByUuid
storage::LvmVgNotFoundByVgName
storage::DifferentBlockSizes
storage::HolderAlreadyExists
storage::HolderHasWrongType
storage::HolderNotFound
storage::HolderNotFoundBySid
storage::IndexOutOfRangeException	Exception class for "index out of range"
storage::InvalidBlockSize
storage::InvalidExtentSize
storage::LogicException	Exception class for faulty logic within the program
storage::NoIntersection
storage::NotImplementedException	Exception class for features not implemented
storage::NotInside
storage::NullPointerException	Exception class for generic null pointer exceptions
storage::OutOfMemoryException	Exception class for "out of memory"
storage::OverflowException	Exception class for "overflow"
storage::ParseException	Exception class for parse errors, e.g
storage::WrongNumberOfChildren
storage::WrongNumberOfParents
noncopyable
storage::Actiongraph
storage::Device	An abstract base class of storage devices, and a vertex in the Devicegraph
storage::BcacheCset	A bcache cache set
storage::BlkDevice	An abstract Block Device
storage::Bcache	A bcache device
storage::Encryption	An encryption layer on a blk device
storage::Luks	An luks encryption layer on a block device
storage::LvmLv	A Logical Volume of the Logical Volume Manager (LVM)
storage::Partition	A partition of a Partitionable, e.g. Disk or Md
storage::Partitionable
storage::Disk	A physical disk device
storage::Md	A MD device
storage::Filesystem
storage::Btrfs
storage::Ext4
storage::Ntfs
storage::Swap
storage::Vfat
storage::Xfs
storage::LvmPv
storage::LvmVg	A Volume Group of the Logical Volume Manager (LVM)
storage::PartitionTable
storage::Gpt
storage::Msdos
storage::Devicegraph	The master container of the libstorage
storage::Holder
storage::Subdevice
storage::User
storage::MdUser
storage::Storage	The main entry point to libstorage
storage::PartitionSlot
storage::Region	A start/length pair with a block size
storage::Topology	A class to calculate partition alignment based on hardware topology