MACHINES:	3B2

RELEASES:	2.1 through 3.2.1 (and beta 3.2.2).

SYMPTOMS:
								5/10/89

	On a 1K or 2K file system large enough for fsck to require a
	scratch file, fsck can under certain, fairly rare, circumstances
	claim a clean file system has damage, usually by reporting duplicate
	blocks.  When fsck attempts to repair the false (or any real) damage,
	it causes additional real damage to the file system.

	This is sometimes referred to as "getting the creeping crud in the
	file system".  Every time you run fsck to clean it up, it just gets
	worse.

DESCRIPTION OF FIX:

	You have been sent the fixed fsck program(s). The files include:

		FILE		sum -r
		----------	-------
		fsck1K		19453
		fsck2K		08828
		fsck512		57954
		README.fsck.txt	-
	
	The patch is based on UNIX 3.2.1 fsck, though it is being sent out for
	use on earlier 3B2 paging UNIX systems, and possibly for 3.2.2 if
	it is not incorporated before the end of beta test for that product.
	Note that UNIX earlier than 3.2.1 will not have an fsck2K.
	The fix will be present in UNIX 4.0.

INSTRUCTIONS:

	To install:

		mv /etc/fsck /etc/Ofsck
		mv /etc/fsck1K /etc/Ofsck1K
		mv /etc/fsck2K /etc/Ofsck2K
		mv /etc/fsck512 /etc/Ofsck512
	
	To preserve the original fsck system.
	Then:
		cd /usr/spool/uucppublic/receive/root/cuuxb
			# (Or to whatever directory you received the fixes in)
		cp fsck1K fsck2K fsck512 /etc
		chmod 555 fsck1K fsck2K fsck512
		chgrp root fsck1K fsck2K fsck512
		chown root fsck1K fsck2K fsck512
	
	(or whatever wild card equivalents you trust).
	Then:

		ln /etc/fsck1K /etc/fsck
	
	fsck first reads the superblock to determine the type of file
	system and then exec's the appropriate "real" fsck to do the
	work.

IDENTIFIERS:

		FILE		sum -r	what | grep UCS
		----------	------	---------------------------
		fsck		19453	fsck:fsck.c	1.33 UCS rbc 5/4/89
		fsck1K		19453	fsck:fsck.c	1.33 UCS rbc 5/4/89
		fsck2K		08828	fsck:fsck.c	1.33 UCS rbc 5/4/89
		fsck512		57954	fsck:fsck.c	1.33 UCS rbc 5/4/89