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In-Reply-To: <20120311090912.GA23850@waltdnes.org>
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Date: Sun, 11 Mar 2012 21:08:55 +0700
Message-ID: <CAA2qdGVMZguMH=mBrZZuneU20p7SpU1Dm-OhUuKJKXcjFecbjw@mail.gmail.com>
Subject: Re: [gentoo-user] Beta test Gentoo with mdev instead of udev; version 5
From: Pandu Poluan <pandu@poluan.info>
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On Mar 11, 2012 6:30 PM, "Daddy" <daddy@happypenguincomputers.com> wrote:
>
> On March 11, 2012 at 5:09 AM Walter Dnes <waltdnes@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 <waltdnes@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.
>
>
I'm one of the long-suffering beta-tester for Walt ;-)
I've tested all his procedures (except this one), and up to now found no
problems. One caveat: my tests are all on servers
(test-dev-staging-production). We -- that is, Gentoo users who want to go
udev-less -- will certainly appreciate feedback from desktop users.
Rgds,
--bcaec5015e5397ca9d04baf82af1
Content-Type: text/html; charset=UTF-8
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<p><br>
On Mar 11, 2012 6:30 PM, "Daddy" <<a href=3D"mailto:daddy@happ=
ypenguincomputers.com">daddy@happypenguincomputers.com</a>> wrote:<br>
><br>
> On March 11, 2012 at 5:09 AM Walter Dnes <<a href=3D"mailto:waltdne=
s@waltdnes.org">waltdnes@waltdnes.org</a>> wrote: <br>
><br>
> >=C2=A0 =C2=A0This revision makes 2 changes... <br>
> > <br>
> > A) The removal of udev is now standard instead of optional.=C2=A0=
udev-181 <br>
> > and higher will be pulling in kmod, and anything else that kmod d=
epends <br>
> > on.=C2=A0 Removing udev will avoid unnecessary cruft on your mach=
ine. <br>
> > <br>
> > B) Splitting up step 3) into 3a) and 3b) for greater clarity as <=
br>
> > requested in user feedback. <br>
> > <br>
> >=C2=A0 =C2=A0The usual warnings apply... <br>
> > * this is a beta <br>
> > * use a spare test machine <br>
> > * if you don't follow the instructions correctly, the result =
might be <br>
> >=C2=A0 =C2=A0an unbootable linux <br>
> > * even if you do follow instructions, the result might be an unbo=
otable <br>
> >=C2=A0 =C2=A0linux <br>
> > <br>
> > <br>
> > 1) Set up your kernel to support and automount a devtmpfs filesys=
tem at <br>
> >=C2=A0 =C2=A0 /dev <br>
> > <br>
> > * If you prefer to edit .config directly, set <br>
> >=C2=A0 =C2=A0CONFIG_DEVTMPFS=3Dy and CONFIG_DEVTMPFS_MOUNT=3Dy <br=
>
> > <br>
> > * If you prefer "make menuconfig", the route is as show=
n below.=C2=A0 Note <br>
> >=C2=A0 =C2=A0that the "Autount devtmpfs..." option won&#=
39;t appear until you enable <br>
> >=C2=A0 =C2=A0"Maintain a devtmpf..." option. <br>
> > <br>
> > make menuconfig <br>
> >=C2=A0 =C2=A0Device Drivers=C2=A0 ---> <br>
> >=C2=A0 =C2=A0 =C2=A0Generic Driver Options=C2=A0 ---> <br>
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0[*] Maintain a devtmpfs filesystem to m=
ount at /dev <br>
> >=C2=A0 =C2=A0 =C2=A0 =C2=A0[*]=C2=A0 =C2=A0Automount devtmpfs at /=
dev, after the kernel mounted the rootfs <br>
> > <br>
> >=C2=A0 =C2=A0Once you've made the changes, rebuild the kernel.=
<br>
> > <br>
> > <br>
> > 2) Set up for emerging busybox.=C2=A0 busybox requires the "=
mdev" flag in <br>
> > this situation.=C2=A0 The "static" flag is probably als=
o a good idea.=C2=A0 In <br>
> > file /etc/portage/package.use add the line <br>
> > <br>
> > sys-apps/busybox static mdev <br>
> > <br>
> >=C2=A0 =C2=A0 Now, "emerge busybox" <br>
> > <br>
> > <br>
> > 3 a) Create /sbin/linuxrc containing at least <br>
> > <br>
> > #!/bin/busybox ash <br>
> > mount -t proc proc /proc <br>
> > mount -t sysfs sysfs /sys <br>
> > exec /sbin/init <br>
> > <br>
> >=C2=A0 =C2=A0This should be enough for most users.=C2=A0 If you ha=
ve an unusual setup, <br>
> > you may need additional stuff in there.=C2=A0 Remember to <br>
> > "chmod 744 /sbin/linuxrc" to make it executable. <br>
> > <br>
> >=C2=A0 In the bootloader "append" line, include "in=
it=3D/sbin/linuxrc".=C2=A0 If <br>
> > you're using lilo remember to re-run lilo to implement the ch=
anges.=C2=A0 If <br>
> > you're using another bootloader, make the equivalant initiali=
zation. <br>
> > <br>
> > <br>
> > 4) Remove udev from the services list, and replace it with mdev.=
=C2=A0 Type <br>
> >=C2=A0 =C2=A0 the following 2 commands at the command line <br>
> > rc-update del udev sysinit <br>
> > rc-update add mdev sysinit <br>
> > <br>
> > <br>
> > 5) reboot to your new kernel.=C2=A0 You're now running withou=
t using udev. <br>
> > <br>
> > <br>
> > 6) Remove udev as per the following instructions... <br>
> > <br>
> > * execute the following command at the commandline <br>
> > emerge --unmerge sys-fs/udev <br>
> > <br>
> > * In file /atc/portage/package.mask, append the line <br>
> > sys-fs/udev <br>
> >=C2=A0 =C2=A0Create the file if it doesn't already exist.=C2=
=A0 You now have a totally <br>
> > udev-free machine <br>
> > <br>
> > -- <br>
> > Walter Dnes <<a href=3D"mailto:waltdnes@waltdnes.org">waltdnes=
@waltdnes.org</a>> <br>
> ><br>
><br>
> Having personally long considered Lennart Poettering a 'spawn of t=
he devil' my question is ... is this your reaction to systemd?<br>
><br>
> =C2=A0<br>
><br>
> One minor typo to point out:<br>
><br>
> =C2=A0<br>
><br>
> /atc/portage/package.mask should be /etc/portage/package.mask<br>
><br>
> =C2=A0<br>
><br>
> I just joined this list last week, but might consider sacrificing some=
hardware to join your endeavor if you need more testers.<br>
><br>
> =C2=A0</p>
<p>I'm one of the long-suffering beta-tester for Walt ;-) </p>
<p>I've tested all his procedures (except this one), and up to now foun=
d no problems. One caveat: my tests are all on servers (test-dev-staging-pr=
oduction). We -- that is, Gentoo users who want to go udev-less -- will cer=
tainly appreciate feedback from desktop users.</p>
<p>Rgds,<br></p>
--bcaec5015e5397ca9d04baf82af1--