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From: chris@mimsy.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: 4.3BSD conversion question ...
Message-ID: <6251@mimsy.UUCP>
Date: Sat, 11-Apr-87 04:03:11 EST
Article-I.D.: mimsy.6251
Posted: Sat Apr 11 04:03:11 1987
Date-Received: Sun, 12-Apr-87 01:18:29 EST
References: <6810@brl-adm.ARPA> <8371@tekecs.TEK.COM>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 20

[Capsule review: 4.3BSD fsck noisily adjusts all those old 24 byte
directories to 512 bytes, and a few 512+24 byte directories to 1024
bytes, and so forth.]

In article <8371@tekecs.TEK.COM> snoopy@doghouse.gwd.tek.com (Snoopy) writes:
>My question is WHY does fsck (or anything else) care whether the
>directory is a multiple of 512?

It is really Just Another Consistency Check.  It would also make
life easier for the kernel if it could assume 512 byte directories:
If you look deep in the heart of ufs_namei.c, you will see a comment
about how the 4.2BSD `mkdir' was careless:

	N.B. - THIS IS AN ARTIFACT OF 4.2 AND SHOULD NEVER HAPPEN.

There should have been a note in the installation instructions about
this, and indeed, `fsck -p' cleans this right up.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
UUCP:	seismo!mimsy!chris	ARPA/CSNet:	chris@mimsy.umd.edu