- - Added --keep-dirlinks (-K), which allows you to symlink a directory
- onto another patition on the receiving side and have rsync treat it
- as matching a normal directory from the sender.
-
- - Added the "write only" option to the daemon's config file.
-
- - Added long-option names for -4 and -6 (namely --ipv4 and --ipv6)
- and documented all these options in the man page.
-
- - Improved the handling of the --bwlimit option so that it's less
- bursty, more accurate, and works properly over a larger range of
- values.
-
- - The rsync daemon-over-ssh code now looks for SSH_CONNECTION and
- SSH2_CLIENT in addition to SSH_CLIENT to figure out the IP address.
-
- - Added the --checksum-seed=N option for advanced users.
+ - Added the --delete-delay option, which is a more efficient way to
+ delete files at the end of the transfer without needing a separate
+ delete pass.
+
+ - You may specify --max-delete=0 to a 3.0.0 client as long as the
+ receiving side is at least version 3.0.0. This means that you
+ can pull from an older rsync with this option, but pushing to an
+ older rsync will generate an error. *Be sure to never specify a 0
+ value to an older rsync client, or it will be silently ignored.*
+
+ - The --hard-link option now uses less memory on both the sending and
+ receiving side for all protocol versions. For protocol 30, the use
+ of a hashtable on the sending side allows us to more efficiently
+ convey to the receiver what files are linked together. This reduces
+ the amount of data sent over the socket by a considerable margin, and
+ moves the in-memory storage of the device+inode information from the
+ receiving side (for protocols < 30) to the sending side (note that
+ older rsync versions kept the device+inode information on both
+ sides).