From owner-freebsd-hackers Thu Nov 2 07:25:11 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id HAA03049 for hackers-outgoing; Thu, 2 Nov 1995 07:25:11 -0800 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id HAA03023 for ; Thu, 2 Nov 1995 07:24:53 -0800 Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id QAA15230; Thu, 2 Nov 1995 16:23:19 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id QAA10068; Thu, 2 Nov 1995 16:23:17 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.6.12/8.6.9) id KAA25179; Thu, 2 Nov 1995 10:52:02 +0100 From: J Wunsch Message-Id: <199511020952.KAA25179@uriah.heep.sax.de> Subject: Re: Automounting CD-ROMs To: jkh@time.cdrom.com (Jordan K. Hubbard) Date: Thu, 2 Nov 1995 10:52:02 +0100 (MET) Cc: lyndon@orthanc.com, freebsd-hackers@freebsd.org Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <27895.815289349@time.cdrom.com> from "Jordan K. Hubbard" at Nov 1, 95 09:15:49 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 1376 Sender: owner-hackers@freebsd.org Precedence: bulk As Jordan K. Hubbard wrote: > > Well, Terry will probably reject this as architecturally unclean (*grin*) > but it sounds like something that would fill the bill quite nicely > for now.. Any takers? :-) The "mediad" has three disadvantages: o It's consuming valuable physical RAM, it has to wakeup very often, causing it to not being paged out. Nevertheless, its actions are only rarely required. (I.e., it is consuming rather much space although it is only seldom actually needed.) o It causes continuous rescans of the SCSI bus (making the LEDs flickering nervously), and it attempts to lay its hands down on all the drives. You can confuse the hell out of IRIX' mediad by sticking a tar floppy into the drive. Or put a CD into the drive that has an iso9660 as well as a Mac HFS -- and mediad will become confused, sometimes mouting it as iso9660 medium, sometimes as hfs. o The entire idea is unusable for floppies due to the braindead PC design that doesn't actually allow you to find out about the status of a floppy drive without turning the motor on all the time. I think, a "mount on demand" approach would be better suited (even though it's certainly harder to implement). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)