Date: Thu, 1 Apr 2010 08:38:38 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: Tim Judd <tajudd@gmail.com>, sobomax@freebsd.org Subject: Re: Fwd: mkuzip and/or geom_uzip changes? Message-ID: <201004010838.38794.jhb@freebsd.org> In-Reply-To: <t2qade45ae91003311532h4ccd9b6ft874cccc4417386e0@mail.gmail.com> References: <x2lade45ae91003310359qa4141380he522aebf47d4e429@mail.gmail.com> <t2qade45ae91003311532h4ccd9b6ft874cccc4417386e0@mail.gmail.com>
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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
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