in http://www.coda.cs.cmu.edu/doc/html/coda-howto-3.html



There are currently several limitations to which identifiers are actually
usable: 
         all numbers must fit in a single byte. 
         0 and -1 (255) are used in error conditions. 
         127 is used to identify `replicated volumes'. 
     This leaves us with a usable range of 1-126 and 128-245 for server
identifiers.                                             ^^^^????

	
	It should be 255 or not?