Date: Thu, 1 Apr 2010 11:14:30 -0600 From: Tim Judd <tajudd@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Fwd: mkuzip and/or geom_uzip changes? Message-ID: <m2zade45ae91004011014w2eebd5edm53cf9f4c5fd01c7a@mail.gmail.com> In-Reply-To: <201004011304.38857.jhb@freebsd.org> References: <x2lade45ae91003310359qa4141380he522aebf47d4e429@mail.gmail.com> <201004010838.38794.jhb@freebsd.org> <v2iade45ae91004010748m7f6b30deh35f60a10f0789327@mail.gmail.com> <201004011304.38857.jhb@freebsd.org>
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On 4/1/10, John Baldwin <jhb@freebsd.org> wrote: > On Thursday 01 April 2010 10:48:07 am Tim Judd wrote: >> On 4/1/10, John Baldwin <jhb@freebsd.org> 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. >> >> >> I'm sorry, I'm not sure what you're referring to when you are telling me >> this. > > If you increase NKPT (look in /sys/i386/conf/NOTES on a recent stable) you > can use a larger mfs root. > >> >> 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: >> >> I double check at home tonight, but I don't remember any additional md >> devices, since I'm running from an MFS_ROOT, i get md0, but that's >> all. >> >> I definately do not get any /dev/md?.uzip files. No .uzips show up. > > You will not get the uzip device until you create the md device via > mdconfig -af. And that was one of my troubleshooting attempts the other night. Instead of relying on a (misdone) embedded script, I tried mdconfig -at vnode -f; and a mdconfig -af;. If I recall, they create a md? node, but not a md?.uzip node. No joy, I have been trying to grep source files seeing what might be the problem of creating the md?.uzip, but I still haven't found the code that does it. Can you duplicate the issue? I haven't gotten into trying to rebuild world (without the src.conf exclusions). I might be able to attempt that tonight. Thanks for your time, Mr. Baldwin. > >> > disk=`mdconfig -af /path/to/usr.img` >> > mount -r /dev/$disk.uzip /usr > > That's why I think you need to add this to a script in /etc. You could > perhaps put the mount line in /etc/fstab, but you need to invoke mdconfig > to create md1. At that point you should get the md1.uzip device > automatically. That above script wouldn't give a devnode /dev/md?.uzip. it's being run manually at a single-user mode and it doesn't create the /dev/md?.uzip node. I will be doing all this this evening when I get home. > > -- > John Baldwin >
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