Aw, man, I built a "shrink LFS" script at one point but I think I don't have it any more.
The big thing to know is that deleting files will not decrease the size of a Qemu image file. To get rid of the cruft created by building an LFS system, you might have to create a new Qemu disk image and "cp -r" the files over. If that's not enough, here's some quick ideas, from memory: Find and delete the static library files. Trim down the documentation under /usr/share/doc. Delete terminfo/termcap files that you don't need. Consider removing unnecessary packages (autotools comes to mind) and rebuilding others with -Os. If you actually get serious about deleting unnecessary files, Gnome has a tool called "baobab" (or "Disk Usage Analyzer" under the menu) that makes pretty graphs that show you which parts of a directory tree are chewing up the most space. William Tracy afishion...@gmail.com (408) 685-4819 On Wed, Mar 20, 2013 at 9:58 PM, Bruce Dubbs <bruce.du...@gmail.com> wrote: > Bruce Dubbs wrote: > >> I'm not sure about specific drivers, but I did get it working. I did >> 'make defconfig' and that seems to have done it. I've looked at the >> difference between configs for the one that sets up hda and the one that >> uses sda, but nothing jumps out at me. > >> I'm going to play around with it and try to minimize .config. That's >> the nice thing about qemu. You can reboot quickly without changing >> other things. I'll post anything I find out. > > I'm getting there. I've got a fairly well minimized kernel that works. > > -rw-r--r-- 1 root root 4.5M Mar 19 21:21 vmlinuz-3.8.3-lfs-SVN-20130316 > -rw-r--r-- 1 root root 5.1M Mar 21 00:46 vmlinuz-test > -rw-r--r-- 1 root root 3.1M Mar 21 02:22 vmlinuz-test2 > > What's really encouraging is the boot time in qemu. > > The kernel finishes at 1.383953 seconds and the boot scripts take 2 > seconds. The network up line from the kernel is the last dmesg entry at > 5.072569 seconds. > > The configuration is really minimal. I eliminated ipv6, netfilter, as > many drivers as I thought were unneeded, multiprocessor support, raid, > etc. I even reduced the number of loop devices. If I could only reduce > the number of ttys, /dev would be quite compact. Searching the net, it > seems that would require a change to a header in the kernel. > > I was thinking about distributing a qemu .img file, but that doesn't > seem realistic. The file is now 5.6G (1.5G compressed, but it took > almost an hour to do the compression). Adding things like Xorg would > just make it bigger. > > -- Bruce > > -- > http://linuxfromscratch.org/mailman/listinfo/lfs-dev > FAQ: http://www.linuxfromscratch.org/faq/ > Unsubscribe: See the above information page -- http://linuxfromscratch.org/mailman/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
