Hybrid initramfs busybox/nash x86 and x86_64 testers

[J. Hartline]

Hello.

I've been working on an initramfs prototype for Kadischi and it seems 
I've got it under wraps.
Could all testers of x86 and x86_64 Fedora Core repository users test 
these two files?

Just simply backup your original /usr/share/kadischi/livecd-mkinitrd.sh 
and /usr/share/kadischi/initrd/livecd-linuxrc files
and replace them with the two attached, respoctively. This may or may 
not rectify the issue with x86_64 CD users.

We hope it does, please send feedback to [e-mail]

J. Hartline

#!/bin/nash

mount -t proc /proc /proc

echo Mounting proc filesystem
echo Mounting sysfs filesystem
mount -t sysfs /sys /sys
echo Creating /dev
mount -o mode=0755 -t tmpfs /dev /dev
mkdir /dev/pts
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
mkdir /dev/shm
#mkdir /dev/mapper
echo Creating initial device nodes
mknod /dev/null c 1 3
mknod /dev/zero c 1 5
mknod /dev/systty c 4 0
mknod /dev/tty c 5 0
mknod /dev/console c 5 1
mknod /dev/ptmx c 5 2
mknod /dev/rtc c 10 135
mknod /dev/tty0 c 4 0
mknod /dev/tty1 c 4 1
mknod /dev/tty2 c 4 2
mknod /dev/tty3 c 4 3
mknod /dev/tty4 c 4 4
mknod /dev/tty5 c 4 5
mknod /dev/tty6 c 4 6
mknod /dev/tty7 c 4 7
mknod /dev/tty8 c 4 8
mknod /dev/tty9 c 4 9
mknod /dev/tty10 c 4 10
mknod /dev/tty11 c 4 11
mknod /dev/tty12 c 4 12
mknod /dev/ttyS0 c 4 64
mknod /dev/ttyS1 c 4 65
mknod /dev/ttyS2 c 4 66
mknod /dev/ttyS3 c 4 67
mknod /dev/loop0 b 7 0
mknod /dev/loop1 b 7 1
mknod /dev/loop2 b 7 2
mknod /dev/loop3 b 7 3
mknod /dev/loop4 b 7 4
mknod /dev/loop5 b 7 5
mknod /dev/loop6 b 7 6
mknod /dev/loop7 b 7 7
#mknod /dev/root b 7 1
echo Setting up hotplug.
hotplug
echo Creating block device nodes.
mkblkdevs
echo "Loading jbd.ko module"
modprobe jbd
echo "Loading ext3.ko module"
modprobe ext3
echo "Loading dm-mod.ko module"
modprobe dm-mod
echo "Loading dm-mirror.ko module"
modprobe dm-mirror
echo "Loading dm-zero.ko module"
modprobe dm-zero
echo "Loading dm-snapshot.ko module"
modprobe dm-snapshot
echo Making device-mapper control node
mkdmnod
mkblkdevs
echo Scanning logical volumes
lvm vgscan --ignorelockingfailure
echo Activating logical volumes
lvm vgchange -ay --ignorelockingfailure  VolGroup00

# Modprobe and find-live-cd
modprobe loop
modprobe squashfs
find-live-cd /cdrom

# Make kernel don't mount root fs
echo 0x100 > /proc/sys/kernel/real-root-dev

echo "Mounting root filesystem"
/bin/busybox mount -t squashfs -oloop,ro /cdrom/kadischi.sqsh /sysroot
echo Creating root device.
#echo "Doing the pivot_root"
# mount /sysroot
#pivot_root /sysroot /sysroot/initrd
setuproot

echo "Setting up readonly-root"
/bin/busybox chroot /sysroot /etc/rc.readonly linuxrc
switchroot

[Jeremy Katz]

On Sun, 2006-08-27 at 17:57 -0500, Jasper O'neal Hartline wrote:
> I've been working on an initramfs prototype for Kadischi and it seems 
> I've got it under wraps.
> Could all testers of x86 and x86_64 Fedora Core repository users test 
> these two files?

Ugh.  Why not use the actual stock mkinitrd pieces with just an
appropriate livecd-mkrootdev as I've outlined a few times previously and
implemented in my hg repo... :/

There's a lot of logic in mkinitrd to handle a lot of cases and trying
to replicate all of that in a live CD specific environment is just going
to lead to problems that are very difficult to debug

Jeremy

[J. Hartline]

Hehe.. I can see the scrunching on your face now..
It was actually simple to do, it should fix the problem with x86_64 
bootstraps.
I slimmed the livecd-mkinitrd.sh (mkinitrd) script WAY down in the process.

This doesn't mean much but I think we can probably do as you suggest and 
use /sbin/mkinitrd on the host.
I'll experiment with this soon after I get done with a current tester on 
x86_64.

J. Hartline

Jeremy Katz wrote:
> On Sun, 2006-08-27 at 17:57 -0500, Jasper O'neal Hartline wrote:
> > I've been working on an initramfs prototype for Kadischi and it seems 
> > I've got it under wraps.
> > Could all testers of x86 and x86_64 Fedora Core repository users test 
> > these two files?
>
> Ugh.  Why not use the actual stock mkinitrd pieces with just an
> appropriate livecd-mkrootdev as I've outlined a few times previously and
> implemented in my hg repo... :/
>
> There's a lot of logic in mkinitrd to handle a lot of cases and trying
> to replicate all of that in a live CD specific environment is just going
> to lead to problems that are very difficult to debug