Path: utzoo!mnetor!uunet!husc6!tut.cis.ohio-state.edu!bloom-beacon!gatech!gtss!chas
From: chas@gtss.UUCP (Charles Cleveland)
Newsgroups: comp.sys.amiga
Subject: Re: A FaccII suggestion !?!?
Message-ID: <225@gtss.UUCP>
Date: 15 Mar 88 04:21:04 GMT
References: <2126@mit-amt.MEDIA.MIT.EDU> <9220@sunybcs.UUCP> <224@gtss.UUCP> <9279@sunybcs.UUCP>
Reply-To: chas@gtss.UUCP (Charles Cleveland)
Distribution: na
Organization: Georgia Tech School of Physics
Lines: 30
Keywords: FaccII

In article <9279@sunybcs.UUCP> ugmiker@sunybcs.UUCP (Michael Reilly) writes:
)In article <224@gtss.UUCP> chas@gtss.UUCP (Charles Cleveland) writes:
)>Well, couldn't FACC just check the date and time the volume was last altered,
)>which is recorded in the disk's boot block, and only keep the old buffers if
)>it hadn't changed?
)
)what would happen if one amiga's clock is 5 minutes behind another one, if 
)you take a disk out of the one 5 minutes behind, you can actually put a date
)on the disk that is BEFORE the last time the disk was written...hmmmmm that 

Pay attention ;-).  I said to check just to see if the date had been changed,
not to see whether it had increased.  The chances that you could manage to
have two amigae write the same date and time to the disk, however you set
the clocks or schedule the disk swapping, is negligible.

My understanding, possibly corrupt, is that the OS presumes when it writes
to the disk that its current time is the time of the last alteration,
regardless of what value may have previously occupied those fields in the
boot block.  I could test this, but unless I hear to the contrary, I won't
bother -- on the grounds of Presumptuous Assumption.

I was not trying to make a case for tracking disks in FACC, merely trying
to address what seemed to me an invalid objection.  Frankly however I would
like to be able to reserve FACC buffers for a particular disk and not to
have them cleared when it is ejected temporarily.
-- 
-Life would be so much easier if we could just look at the source code.-

Charles Cleveland    Georgia Tech School of Physics    Atlanta, GA 30332
UUCP: ...!gatech!gtss!chas         INTERNET:  chas@ss.physics.gatech.edu