• (master) fixed rebalance replication (check for all chunk copies for destination - not only valid)
• (master+mount) new mechanism for atime+mtime setting during I/O
• (master+mount) new I/O synchronization between different mounts (with cache invalidation)
• (master+mount) new chunk number/version cache (with automatic invalidation from master)
• (master) added mapping chunkserver IP classes (allow to have separate network for I/O and separate for other activity)
• (master) fixed status returned by writechunk after network down/up
• (master) changed trashtime from seconds to hours
• (master) added METADATA_SAVE_FREQ option (allow to save metadata less frequently than every hour)
• (master) added using in emergency (endangered chunks) all available servers for replication (even overloaded and being maintained)
• (master) added using chunkservers in 'internal rebalance' state in case of deleting chunks
• (all) spell check errors fixed (patch contributed by Dmitry Smirnov)