From owner-freebsd-arch Tue Oct 24 7:17:32 2000 Delivered-To: freebsd-arch@freebsd.org Received: from critter.freebsd.dk (flutter.freebsd.dk [212.242.40.147]) by hub.freebsd.org (Postfix) with ESMTP id 75A8B37B4D7 for ; Tue, 24 Oct 2000 07:17:29 -0700 (PDT) Received: from critter (localhost [127.0.0.1]) by critter.freebsd.dk (8.11.1/8.9.3) with ESMTP id e9OEJMU19692; Tue, 24 Oct 2000 16:19:22 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: Dag-Erling Smorgrav Cc: Marius Bendiksen , arch@FreeBSD.ORG Subject: Re: Ideas concerning fsck In-Reply-To: Your message of "24 Oct 2000 16:08:15 +0200." Date: Tue, 24 Oct 2000 16:19:22 +0200 Message-ID: <19690.972397162@critter> From: Poul-Henning Kamp Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >I'm not familiar with the concept of bootfs - can somebody enlighten >me? The idea is to use a small RAM fs to get airborne after boot. AIX boots with what is in essence a fixit filesystem on a ramdisk, once it has located the real root filesystem and fsck'ed etc etc it has a magic syscall which means "throw away the rootfilesystem, mount this filesystem as root, (re)exec /sbin/init" The idea I have been toying with is to mount DEVFS as / and mount the "real" root on top of it with a unionmount. Amongst the things this would allow is a kind of "persistence" for /dev (should anybody still want that) and various trickery like mirror/raid initializations could be performed from userland before mounting the "real" root. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message