Path: utzoo!attcan!uunet!yale!cmcl2!ccnysci!alexis
From: alexis@ccnysci.UUCP (Alexis Rosen)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Missing megabytes
Message-ID: <1399@ccnysci.UUCP>
Date: 13 Mar 89 15:04:23 GMT
References: <457@sys.uea.ac.uk>
Reply-To: alexis@ccnysci.UUCP (Alexis Rosen)
Organization: City College of New York
Lines: 24


I'm going way out on a limb here, since I'm no expert on the file system
(and Mark is, I think), but...

I believe Mark is confuding the Clump size and the Allocation block
size.  There are a maximum of 64K allocation blocks on a disk. This has
nothing to do with the clump size. The clump size is simply the minimum
number of alloc. blocks that get alotted to a file when it wants to
grow. (I'm not sure, but I think that this then gets trimmed back when
the file is closed.)

I wonder if Richard has files on his disk with a version number not zero.
I know that inside Mac says that HFS doesn't support this at all, but I'm
not sure that's true. Another possibility is that you have an extents file
on disks 1 and 3 but not on disk 2 (If disk 2 is a forty meg disk, you've
filled it past 99%, so I'm guessing that you defragmented it...). I'm not
too clear on that, though, because what about the catalog file? That must
exist on all three, so you must have counted it for disk 2, so...

The most likely possibility is that there's this little green guy living
in your mac, and... :-)

Alexis Rosen
alexis@ccnysci.uucp