After VFS install (sucessfull) Boot/Shutdown /dev/nbd/1-127 error
 

After I installed VFS on boot I get a bunch of messages saying :

/dev/nbd/1: read failed after 0 of 4096 at 0: Input/output error
.............. one for each dev, all the way down to
/dev/nbd/127: read failed after 0 of 4096 at 0: Input/output error


Is this a problem or is it looking for a bunch of devices that aren't there?? It doesn't seem to be causeing any instability, or other problems, or is this more serious than it seems??? Any help would be greatly appreciated.