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Path: utzoo!linus!decvax!harpo!seismo!rlgvax!guy
From: guy@rlgvax.UUCP (Guy Harris)
Newsgroups: net.unix
Subject: Re: Raw vs Block Tape I/O
Message-ID: <1562@rlgvax.UUCP>
Date: Mon, 16-Jan-84 17:14:20 EST
Article-I.D.: rlgvax.1562
Posted: Mon Jan 16 17:14:20 1984
Date-Received: Wed, 18-Jan-84 01:09:42 EST
References: <341@hocda.UUCP> <2497@azure.UUCP>
Organization: CCI Office Systems Group, Reston, VA
Lines: 11

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