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Subject: Re: [gentoo-user] Beta test Gentoo with mdev instead of udev;
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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.
Kindest regards,
Bruce
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On March 11, 2012 at 5:09 AM Walter Dnes <waltdnes@waltdnes.org> wrote:
<br/>
<br/>
>   This revision makes 2 changes...
<br/>
>
<br/>
> A) The removal of udev is now standard instead of optional.  udev-181
<br/>
> and higher will be pulling in kmod, and anything else that kmod depends
<br/>
> on.  Removing udev will avoid unnecessary cruft on your machine.
<br/>
>
<br/>
> B) Splitting up step 3) into 3a) and 3b) for greater clarity as
<br/>
> requested in user feedback.
<br/>
>
<br/>
>   The 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/>
>   an unbootable linux
<br/>
> * even if you do follow instructions, the result might be an unbootable
<br/>
>   linux
<br/>
>
<br/>
>
<br/>
> 1) Set up your kernel to support and automount a devtmpfs filesystem at
<br/>
>    /dev
<br/>
>
<br/>
> * If you prefer to edit .config directly, set
<br/>
>   CONFIG_DEVTMPFS=y and CONFIG_DEVTMPFS_MOUNT=y
<br/>
>
<br/>
> * If you prefer "make menuconfig", the route is as shown below.  Note
<br/>
>   that the "Autount devtmpfs..." option won't appear until you enable
<br/>
>   "Maintain a devtmpf..." option.
<br/>
>
<br/>
> make menuconfig
<br/>
>   Device Drivers  --->
<br/>
>     Generic Driver Options  --->
<br/>
>       [*] Maintain a devtmpfs filesystem to mount at /dev
<br/>
>       [*]   Automount devtmpfs at /dev, after the kernel mounted the rootfs
<br/>
>
<br/>
>   Once you've made the changes, rebuild the kernel.
<br/>
>
<br/>
>
<br/>
> 2) Set up for emerging busybox.  busybox requires the "mdev" flag in
<br/>
> this situation.  The "static" flag is probably also a good idea.  In
<br/>
> file /etc/portage/package.use add the line
<br/>
>
<br/>
> sys-apps/busybox static mdev
<br/>
>
<br/>
>    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/>
>   This should be enough for most users.  If you have an unusual setup,
<br/>
> you may need additional stuff in there.  Remember to
<br/>
> "chmod 744 /sbin/linuxrc" to make it executable.
<br/>
>
<br/>
>  In the bootloader "append" line, include "init=/sbin/linuxrc".  If
<br/>
> you're using lilo remember to re-run lilo to implement the changes.  If
<br/>
> you're using another bootloader, make the equivalant initialization.
<br/>
>
<br/>
>
<br/>
> 4) Remove udev from the services list, and replace it with mdev.  Type
<br/>
>    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.  You're now running without 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/>
>   Create the file if it doesn't already exist.  You now have a totally
<br/>
> udev-free machine
<br/>
>
<br/>
> --
<br/>
> Walter Dnes <waltdnes@waltdnes.org>
<br/>
>
</div>
<p style="margin: 0px;">Having personally long considered Lennart Poettering a 'spawn of the devil' my question is ... is this your reaction to systemd?</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">One minor typo to point out:</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">/atc/portage/package.mask should be /etc/portage/package.mask</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">I just joined this list last week, but might consider sacrificing some hardware to join your endeavor if you need more testers.</p>
<p style="margin: 0px;"> </p>
<p style="margin: 0px;">Kindest regards,</p>
<p style="margin: 0px;">Bruce </p>
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