Version 0.6.5.6 of OpenZFS on Linux, the native Linux kernel port of the ZFS filesystem, is now available at: http://zfsonlinux.org
Some notable improvements in version 0.6.5.6 are:
-gLPto zpool subcommands to print vdev names as a GUID, a real path resolving all symbolic links, and as a full path. This change enables better ZFS integration in Ubuntu’s GRUB utilities.
zfs send -i(incremental send) can produce a stream which will result in incorrect sparse file contents on the target.
For more details, check out the full changelog.