On Mar 21, 2012 2:52 AM, <cov...@ccs.covici.com> wrote: > > Daddy <da...@happypenguincomputers.com> wrote: > > > On March 11, 2012 at 5:09 AM Walter Dnes <waltd...@waltdnes.org> wrote: > > > > > This revision makes 2 changes... > > > > > > A) The removal of udev is now standard instead of optional. udev-181 > > > and higher will be pulling in kmod, and anything else that kmod depends > > > on. Removing udev will avoid unnecessary cruft on your machine. > > > > > > B) Splitting up step 3) into 3a) and 3b) for greater clarity as > > > requested in user feedback. > > > > > > The usual warnings apply... > > > * this is a beta > > > * use a spare test machine > > > * if you don't follow the instructions correctly, the result might be > > > an unbootable linux > > > * even if you do follow instructions, the result might be an unbootable > > > linux > > > > > > > > > 1) Set up your kernel to support and automount a devtmpfs filesystem at > > > /dev > > > > > > * If you prefer to edit .config directly, set > > > CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y > > > > > > * If you prefer "make menuconfig", the route is as shown below. Note > > > that the "Autount devtmpfs..." option won't appear until you enable > > > "Maintain a devtmpf..." option. > > > > > > make menuconfig > > > Device Drivers ---> > > > Generic Driver Options ---> > > > [*] Maintain a devtmpfs filesystem to mount at /dev > > > [*] Automount devtmpfs at /dev, after the kernel mounted the > > rootfs > > > > > > Once you've made the changes, rebuild the kernel. > > > > > > > > > 2) Set up for emerging busybox. busybox requires the "mdev" flag in > > > this situation. The "static" flag is probably also a good idea. In > > > file /etc/portage/package.use add the line > > > > > > sys-apps/busybox static mdev > > > > > > Now, "emerge busybox" > > > > > > > > > 3 a) Create /sbin/linuxrc containing at least > > > > > > #!/bin/busybox ash > > > mount -t proc proc /proc > > > mount -t sysfs sysfs /sys > > > exec /sbin/init > > > > > > This should be enough for most users. If you have an unusual setup, > > > you may need additional stuff in there. Remember to > > > "chmod 744 /sbin/linuxrc" to make it executable. > > > > > > In the bootloader "append" line, include "init=/sbin/linuxrc". If > > > you're using lilo remember to re-run lilo to implement the changes. If > > > you're using another bootloader, make the equivalant initialization. > > > > > > > > > 4) Remove udev from the services list, and replace it with mdev. Type > > > the following 2 commands at the command line > > > rc-update del udev sysinit > > > rc-update add mdev sysinit > > > > > > > > > 5) reboot to your new kernel. You're now running without using udev. > > > > > > > > > 6) Remove udev as per the following instructions... > > > > > > * execute the following command at the commandline > > > emerge --unmerge sys-fs/udev > > > > > > * In file /atc/portage/package.mask, append the line > > > sys-fs/udev > > > Create the file if it doesn't already exist. You now have a totally > > > udev-free machine > > > > > > -- > > > Walter Dnes <waltd...@waltdnes.org> > > > > > > > Having personally long considered Lennart Poettering a 'spawn of the devil' > > my question is ... is this your reaction to systemd? > > > > One minor typo to point out: > > > > /atc/portage/package.mask should be /etc/portage/package.mask > > > > I just joined this list last week, but might consider sacrificing some > > hardware to join your endeavor if you need more testers. > OK, I am not seeing mdev in the portage tree -- I would like to learn > more about this before I take the plunge. So where do I get it and does > it create the appropriate device nodes, etc? >
The creation of device nodes mostly are done by the devtmpfs of the kernel. I recommend the linuxrc to look like this : #!/bin/busybox ash mount -t proc proc /proc mount -t sysfs sysfs /sys echo /bin/mdev > /proc/sys/kernel/hotplug /bin/mdev -s exec /sbin/init Before booting, ensure /bin/mdev exists and is a symlink to /bin/busybox. The rest, just follow the steps outlined by waltdnes Rgds,
