thin-provisioning-tools 0.3.2-1ubuntu1 (amd64 binary) in ubuntu vivid

 This package contains tools to handle meta-data from the device-mapper
 thin target. This target allows the use of a single backing store for multple
 thinly provisioned volumes. Numerous snapshots can be taken from such
 volumes. The tools can check the meta-data for consistency, repair damaged
 information and dump or restore the meta-data in textual form.