Important unimplemented features in current device-mapper implementation

* Implement dm_dev_event_ioctl and dm_target_msg_ioctl functions

* Write more targets mirror.

* Snapshot target, there is some code in repository already

  	    	     	General LVM tasks

* Cleanup resize_ffs to properly resize filesystem on LV

* Integrate LVM with the sysinst, so we can configure LVM during installation

			Pain in the sky tasks

* Implement multipath target for network attached storage devices.

* Cluster lvm extension, NetBSD needs Distributed Lock Manager for this.

* Write GPL free libdevmapper and lvm2tools.
  See http://mail-index.netbsd.org/tech-kern/2008/09/24/msg002794.html
	
