Date: Fri, 13 Feb 1998 14:54:44 -0800 From: Mike Smith <mike@smith.net.au> To: Paul Traina <pst@juniper.net> Cc: Mike Smith <mike@smith.net.au>, core@FreeBSD.ORG, junichi@jp.freebsd.org, committers@FreeBSD.ORG Subject: Re: wfd block major number reassignment from 24 to 1 Message-ID: <199802132254.OAA04891@dingo.cdrom.com> In-Reply-To: Your message of "Fri, 13 Feb 1998 14:31:18 PST." <199802132231.OAA18889@base.juniper.net>
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> > Hey, while you're on this, could you look at what is involved in
> > actually using the slice number passed in from the bootblocks when it
> > comes to finding the root filesystem? ie. calculate the rootdev using
> > the slice minor rather than the compatability minor? That'd make
> > Jordan Extremely Happy.
>
> I'm looking at exactly this code right now on the kernel side. It
> is extremely annoying in the shipping state (2.2, I haven't looked
> at 3.0). I wasn't planning on adding that code to the boot code due
> to space considerations in the boot blocks.
The bootblocks already encode the slice number and pass it to the
kernel:
/*
* For backwards compatibility, use the previously-unused adaptor
* and controller bitfields to hold the slice number.
*/
bootdev = MAKEBOOTDEV(maj, (slice >> 4), slice & 0xf, unit, part);
> I hate to bitch and whine, but the reality of the situation is that
> boot2 is as bloated as it is because of kludges on top of kludges
> in the boot code. If someone actually had the time and energy to
> completely restructure the boot code from scratch, I think we'd be
> in much better shape. Unfortunately, I find myself trying to scrape
> yet two more kludges into the code to handle wfd style boot devices.
> I just don't have the time (read I'm fixing this stuff during
> compiles of real work) to rewrite the boot code from scratch.
I understand. I still hold my line about adopting the NetBSD
standalone bootstrap, but that leaves us searching for developer time.
8(
Agreed on everything else you say.
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes you're behind. \\ mike@smith.net.au
\\ The race is long, and in the \\ msmith@freebsd.org
\\ end it's only with yourself. \\ msmith@cdrom.com
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