Roadmap

This page recapitulates our plan for the future of Phobos, in order of implementation:

• device fair share -> implement a mechanism for equal partitioning of requests between devices -> ongoing
• early locate with compatibility check -> check at locate if a host has compatible devices for the media the object is on -> done
• deprecated stats -> retrieve information about the number of deprecated objects on a medium -> ongoing
• extent migration -> migrate extents from one medium to another -> ongoing
• repack/cleanup -> complete deletion of an object and its extent from the system and media -> ongoing
• multi-library support -> support multiple libraries in a single Phobos instance -> ongoing
• Erasure Coding -> implementation of an Erasure Coding storage layout
• grouped put -> group multiple put requests into a single one and optimize medium usage
• auto tags -> have a pool of untagged tapes that can be selected and tagged when the number of tapes of a given tag drops to 0
• mandatory tagging -> define a set of tags that must be specified at put (manage communities of users)
• auto tagging -> have a reserve of media that can be used if other media of a certain tag are full, so that they are tagged as belonging to that group
• internal HSM management -> manage HSM requests from one storage tier to another
• disaster recovery -> recovering the database and information about objects and such after a failure
• RAO implementation -> take into account the Recommended Access Order on tapes
• Server-client -> allow remote commands to be executed on a Phobos node