Raw vs Block Tape I/O

[Guy Harris]

Mounting a tape as a file system will only work if the tape was written
with a block size of 512 or 1024 or whatever your UNIX uses as the disk
block size; either it's in the 512-1024 range, which wastes a *lot* of tape,
or it's something reasonable for tape, in which case small files will waste
a *lot* of disk space.

Corollary: it won't work at all with the 4.2BSD file system, which doesn't
*have* a "disk block size" in that sense of the word.

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy