libcrush1 0.27-1.1 (amd64 binary) in ubuntu oneiric

 CRUSH is a pseudo-random hash-like algorithm for mapping inputs to
 a changing hierarchy of devices without a centralized directory. It was
 originally designed for mapping data objects to storage servers, although it
 may be useful in other domains. Because large systems are inherently
 dynamic, CRUSH is designed to facilitate the addition and removal of devices
 while minimizing unnecessary object movement. The algorithm accommodates a
 wide variety of data replication and reliability mechanisms and distributes
 data in terms of user-defined policies that enforce separation of replicas
 across failure domains.