« Changelog History


SheepDog v0.8.0 Release Notes

  • 🆕 NEW FEATURE:

    • hyper volume: use B-tree structure to replace index-array in sd_inode so the max size of vdi could extent from 4TB to 16PB.
    • Erasure Code: a new redundancy scheme that uses error correction algorithm to achieves high available of data with much less storage overhead compared to complete replication
    • HTTP simple storage: a new interface to retrieve any amount of data with a simple web services interface.

    DOG COMMAND INTERFACE:

    • new subcommand "vdi cache purge" for cleaning stale object cache
      • "vdi cache purge" cleans stale cache of all images
      • "vdi cache purge " cleans stale cache of the specified image
    • new subcommand "node stat" for showing I/O status of the node
    • new subcommand "node log level" for changing log level at runtime
      • "node log level set" sets loglevel of running sheep process
      • "node log level get" gets loglevel from running sheep process
      • "node log level list" lists available loglevels
    • new option "-o" of "vdi track", for tracking objects with their oids
    • new option "-y" of "vdi create", for create hyper-volume vdi
    • new option "-s" of "cluster info", show backend store information
    • new option "-t" of "cluster format", choose not serve write request if number of nodes is not sufficient
    • modify option "-c" of "vdi create", we can specify "x:y" for erasure code
    • new subcommand "node stat" for node request satistics
      • "node stat -w" set watch mode for this command

    SHEEP COMMAND INTERFACE:

    • improvements of help messages
    • change format of the size format in -j (journaling) and -w (object cache) options. The new format is: n[TtGgMmKkb]. e.g. "-j size=1024M".
    • rotate log when sheep process catches SIGHUP signal
    • remove "-o" option for choosing stdout as an output of log
    • remove "-f" option for executing sheep as a foreground process
      • "-o" and "-f" is a same thing to "-l dst=stdout"
    • unified "-l" option
      • "-l format=..." for log format
      • "-l level=..." for log level
      • "-l dst=..." for log destination
    • new option '-r' to enable http service
    • modify option "-c" of "cluster format", we can specify "x:y" for erasure code