From owner-freebsd-current@freebsd.org Wed Jun 17 17:52:53 2020 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 0F76A355746 for ; Wed, 17 Jun 2020 17:52:53 +0000 (UTC) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Received: from gndrsh.dnsmgr.net (br1.CN84in.dnsmgr.net [69.59.192.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 49nCMm0HQXz48Xc for ; Wed, 17 Jun 2020 17:52:51 +0000 (UTC) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Received: from gndrsh.dnsmgr.net (localhost [127.0.0.1]) by gndrsh.dnsmgr.net (8.13.3/8.13.3) with ESMTP id 05HHqobW086455; Wed, 17 Jun 2020 10:52:50 -0700 (PDT) (envelope-from freebsd-rwg@gndrsh.dnsmgr.net) Received: (from freebsd-rwg@localhost) by gndrsh.dnsmgr.net (8.13.3/8.13.3/Submit) id 05HHqo0E086454; Wed, 17 Jun 2020 10:52:50 -0700 (PDT) (envelope-from freebsd-rwg) From: "Rodney W. Grimes" Message-Id: <202006171752.05HHqo0E086454@gndrsh.dnsmgr.net> Subject: Re: CTF: UEFI HTTP boot support In-Reply-To: <46934.1592351291@kaos.jnpr.net> To: "Simon J. Gerraty" Date: Wed, 17 Jun 2020 10:52:50 -0700 (PDT) CC: "Rodney W. Grimes" , Miguel C , freebsd-current@freebsd.org X-Mailer: ELM [version 2.4ME+ PL121h (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: 49nCMm0HQXz48Xc X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of freebsd-rwg@gndrsh.dnsmgr.net has no SPF policy when checking 69.59.192.140) smtp.mailfrom=freebsd-rwg@gndrsh.dnsmgr.net X-Spamd-Result: default: False [1.57 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-0.22)[-0.219]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[dnsmgr.net]; AUTH_NA(1.00)[]; NEURAL_SPAM_MEDIUM(0.51)[0.508]; NEURAL_SPAM_SHORT(0.38)[0.378]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; ASN(0.00)[asn:13868, ipnet:69.59.192.0/19, country:US]; MID_RHS_MATCH_FROM(0.00)[]; FREEMAIL_CC(0.00)[gndrsh.dnsmgr.net,gmail.com,freebsd.org] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Jun 2020 17:52:53 -0000 > Rodney W. Grimes wrote: > > > The "fake cd drive" is in the kernel, loader just copies the iso into > > > memory like any other module, and by the time that's done you just > > > reboot into the newly installed system, which again uses > > > > > > vfs.root.mountfrom="cd9660:/dev/md0.uzip" > > ^^^ > > > > Argh, the cd9660 confused me, I think your doing a > > "root on mfs/md"? > > loader.conf says > > rootfs_load="yes" > rootfs_name="contents.izo" > rootfs_type="md_image" > vfs.root.mountfrom="cd9660:/dev/md0.uzip" > > contents.izo is uzip'd contents.iso which file(1) > describes as ISO 9660 CD-ROM filesystem data '' > > That's for normal boot, for the loader 'install' command > it expects an uncompressed iso for rootfs. Ok, now the puzzle is how much work to get from a stock FreeBSD .iso image to something that works with this. Obviously we need a non-stock /boot/loader.conf file, or to type some commands manually at a loader prompt. I believe the stock GENERIC kernel has the md_root support for this already, so it may not be that hard to do. -- Rod Grimes rgrimes@freebsd.org