From owner-freebsd-hackers@FreeBSD.ORG Fri Apr 2 01:50:07 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 275E8106564A; Fri, 2 Apr 2010 01:50:07 +0000 (UTC) (envelope-from tajudd@gmail.com) Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com [209.85.223.182]) by mx1.freebsd.org (Postfix) with ESMTP id C517A8FC16; Fri, 2 Apr 2010 01:50:06 +0000 (UTC) Received: by iwn12 with SMTP id 12so274126iwn.14 for ; Thu, 01 Apr 2010 18:50:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type; bh=YK1Yaj4EmCN0w7HTRzHlJw+n86W15BYRG0Zsy4JQbdE=; b=c3bOzSfBxScZrz9pnL7w3Z/HGEMaMxBcUs3tck3bPWcIdaFnMpjR+mQgwTwAZVZKXC lJSiFqHpoMDQF+dp/1/KQuGS0ACxDLFpKVI4p77ZXxAgeONaYNcC5JVZbCBrQRtD8h1H ic9PM3ubebRrZ5dOpDMuYUuqP7SE9LQUS7GYg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=ul0K1Hxzs/ut4SBZVrrwR0wXuWo3x0C/OhA1wEjIE1l2N/Skcze8P9QSsEGC8ZT3aX 0bq+FRuasHcdtwX/bKhnh5MhlteSYfM6bEEdH5bb7unLhmFF3pq0VsyXslP0M6EHJRDZ Rl4H6QqwwBxLHXATv9V9B1NHrEwgBo2ablZnw= MIME-Version: 1.0 Received: by 10.231.146.147 with HTTP; Thu, 1 Apr 2010 18:50:06 -0700 (PDT) In-Reply-To: <201004010838.38794.jhb@freebsd.org> References: <201004010838.38794.jhb@freebsd.org> Date: Thu, 1 Apr 2010 19:50:06 -0600 Received: by 10.231.174.137 with SMTP id t9mr513506ibz.98.1270173006149; Thu, 01 Apr 2010 18:50:06 -0700 (PDT) Message-ID: From: Tim Judd To: John Baldwin Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-hackers@freebsd.org, sobomax@freebsd.org Subject: Re: Fwd: mkuzip and/or geom_uzip changes? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Apr 2010 01:50:07 -0000 On 4/1/10, John Baldwin wrote: > On Wednesday 31 March 2010 6:32:09 pm Tim Judd wrote: >> Hi All, >> >> Just starting to see if I can find other reports. You all probably >> have had the "more than one pair of eyes looking at a thing is better >> than my eyes alone." This is why I'm writing now, as I'm starting the >> discovery. >> >> Let me background this a little bit. I only started looking into this >> because mkuzip and it's counterpart, geom_uzip are throwing errors on >> FreeBSD8 i386 >> >> >> scenario (/etc/src.conf in effect, removing *LOTS* of stuff with knobs): >> make DESTDIR=/home/small8 installworld installkernel distribution >> mv /home/small8/boot /home/small8-boot/ >> makefs -t ffs /home/small8/usr.img /home/small8/usr/ >> mkuzip -o /home/small8/usr.uzip /home/small8/usr.img >> [*] >> chflags -R noschg /home/small8/usr/* >> rm -rf /home/small8/usr/* /home/small8/usr.img >> ee /home/small8/etc/rc.d/mountcritlocal >> [**] >> makefs -t ffs /home/small8-boot/mfsroot /home/small8/ >> gzip --best /home/small8-boot/mfsroot >> ee /home/small8-boot/boot/loader.conf >> [***] >> rm /home/small8-boot/boot/kernel/*.symbols >> gzip --best /home/small8-boot/boot/kernel/kernel >> mkisofs -U -J -r -V "FreeBSD8" -b boot/cdboot -no-emul-boot >> -iso-level 4 -o /home/small8.iso /home/small8-boot/ >> >> >> [*]: mkuzip inserts a script header that is broken. module name it's >> searching for may have been renamed? >> [**]: Edited mountcritlocal to mount the usr.uzip file as by using the >> above script header, throws errors >> [***]: added zlib and geom_uzip modules to load to the boot image, to >> satisfy the script header's requirements. >> >> OK, the above scenario creates about a 33MB usr.uzip, and a 68MB iso. >> Small enough to apparently fit into the undocumented 50 or 100MB size >> limit of mfs_root module > > BTW, you can raise this limit by changing NKPT. > >> The problem: >> mkuzip generates a few lines as a script in the head of the >> resulting *.uzip file. Two problems... >> 1) the module it queries for is geom_uzip (kldstat -m $m), but >> FreeBSD8 names the geom_uzip module (i guess, internally) as g_uzip. >> mkuzip's generated image will never find the module if they're not >> named the same. > > It is g_uzip even in 7: > > DECLARE_GEOM_CLASS(g_uzip_class, g_uzip); > MODULE_DEPEND(g_uzip, zlib, 1, 1, 1); > > This has probably just been broken from the start. If it used 'kldstat -n' > then it might work. Well, it probably works (modulo a warning) by accident > as > it doesn't hurt to kldload an already-loaded module. Note though that it > assumes the raw usr.img is an ISO image, not a UFS filesystem. > >> 2) even with geom_uzip module and it's dependency zlib loaded, i don't >> get a mdconfig node '/dev/md?.uzip' to appear. >> >> It's been forever since I touched uzip, so I have to ask. > > Do you have a md0 device at all? I think you want to hack the script to do > something like this: > > disk=`mdconfig -af /path/to/usr.img` > mount -r /dev/$disk.uzip /usr > > -- > John Baldwin > booted single-user md0 is the mfs_root here is the manual attachment of an mdconfig... # mdconfig -af /usr.uzip WARNING: opening backing store: /usr.uzip readonly md1.uzip: block size (24) should be a multiple of 512. md1 # ls /dev/md1* /dev/md1 #