Difference between revisions of "Arch32"
Line 93: | Line 93: | ||
cp /etc/mtab . | cp /etc/mtab . | ||
− | + | == Create Chroot Enviroment Scripts == | |
+ | |||
+ | Copy bash script below and save as arch32 in /etc/rc.d/ | ||
Line 133: | Line 135: | ||
− | + | Then make script executable | |
− | chmod +x /etc/rc.d/arch32 | + | # chmod +x /etc/rc.d/arch32 |
− | + | Create bash script to chroot into new 32-bit system: | |
− | + | #!/bin/bash | |
+ | |||
+ | # Start chroot daemon | ||
− | + | sudo /etc/rc.d/arch32 start | |
− | + | # Give users access to xserver | |
− | + | ||
− | + | xhost + | |
− | + | (install xorg-xhost if command not found) | |
− | # Give users access to xserver | + | |
− | + | # Chroot into 32-bit system | |
− | xhost + | + | |
− | (install xorg-xhost if command not found) | + | sudo chroot /opt/arch32 |
− | + | ||
− | # Chroot into 32-bit system | + | # When leaving chroot type 'exit' then following commands will run.... |
− | + | ||
− | sudo chroot /opt/arch32 | + | xhost - |
− | + | ||
− | # When leaving chroot type 'exit' then following commands will run.... | + | sudo /etc/rc.d/arch32 stop |
− | |||
− | xhost - | ||
− | |||
− | sudo /etc/rc.d/arch32 stop | ||
− | |||
− | + | Run bash script arch32.sh to chroot and configure locale | |
locale-gen | locale-gen |
Revision as of 00:16, 9 March 2011
Note: 32-bit chroot for a 64-bit Arch is described in Install_bundled_32-bit_system_in_Arch64 in great detail.
First we decide where to place the 32bit system. This variable will be used throughout this page for flexibilty. The given value is just what the author used. If you prefer some other location, this is the time to change it.
ARCH32_ROOT="/opt/arch32"
Now we have to create the directories so that pacman can function and affect changes inside our chroot.
mkdir -p $ARCH32_ROOT/var/{cache/pacman/pkg,lib/pacman}
Below is a helper script which I place in /usr/local/bin/pacman32. It will allow us to run pacman from our 64bit install and it will affect our chroot only. Make sure that if you are not using the default location, to change it here.
#!/bin/bash ARCH32_ROOT="/opt/arch32" PACMAN_EXEC="pacman" sed -e 's/x86_64/i686/g' /etc/pacman.d/mirrorlist > $ARCH32_ROOT/mirrorlist sed -e 's@/etc/pacman.d/mirrorlist@/opt/arch32/mirrorlist@g' /etc/pacman.conf > $ARCH32_ROOT/pacman.conf $PACMAN_EXEC --root $ARCH32_ROOT --cachedir $ARCH32_ROOT/var/cache/pacman/pkg --config $ARCH32_ROOT/pacman.conf "$@"
Now we can sync up our 32bit pacman with the repositories.
/usr/local/bin/pacman32 -Sy
And then we install the bare-minimum that we need to install other 32bit programs and libraries.
/usr/local/bin/pacman32 -S filesystem licenses bash sed coreutils gzip
We now setup some of the meaningful configuration files.
cd $ARCH32_ROOT/etc ln -f /etc/passwd* ln -f /etc/shadow* ln -f /etc/group* ln -f /etc/rc.conf ln -f /etc/resolv.conf ln -f /etc/localtime ln -f /etc/locale.gen ln -f /etc/profile.d/locale.sh profile.d ln -f /etc/vimrc cp /etc/mtab .
/usr/local/bin/arch32
#!/bin/bash schroot -p -- "$@"
Contents
Alternative Setup (Testing)
This setup is being tested and so far seems to work well. It is based on the above comments and the more detailed description in Install_bundled_32-bit_system_in_Arch64.
Create Folder Structure
Create folder to store and sync 32-bit system (as root):
# mkdir /opt/arch32
Create pacman folder structure inside new location:
# mkdir -p /opt/arch32/var/{cache/pacman/pkg,lib/pacman}
Pacman Configuration
Copy the pacman config files from 64-bit system and edit pacman sync files to work as 32-bit system. These two commands will copy and change /etc/pacman.conf and /etc/pacman.d/mirrorlist to be saved in /opt/arch32.
# sed -e 's/x86_64/i686/g' /etc/pacman.d/mirrorlist > /opt/arch32/mirrorlist
# sed -e 's@/etc/pacman.d/mirrorlist@/opt/arch32/mirrorlist@g' -e 's/Architecture = auto/Architecture = i686/g' /etc/pacman.conf > /opt/arch32/pacman.conf
N.B. Check that both files point to i686 mirrors Line: 'Architecture = i686' in /etc/pacman.conf is correct.
Sync 32-bit System Using 64-bit Pacman Command
Use this pacman command to sync files to correct location in /opt/arch32 from 64-bit system:
# pacman --root /opt/arch32 --cachedir /opt/arch32/var/cache/pacman/pkg --config /opt/arch32/pacman.conf -Sy
Once pacman is synchronised, install minimum packages:
# pacman --root /opt/arch32 --cachedir /opt/arch32/var/cache/pacman/pkg --config /opt/arch32/pacman.conf -S filesystem licenses bash sed coreutils gzip pacman (nano make file gawk grep gcc)
Packages in brackets are useful for compiling packages in 32-bit system, e.g. from AUR
Create links in 32-bit system from useful conf files in 64-bit system (some are optional), first change to /opt/arch32/etc directory:
# cd /opt/arch32/etc
Run these commands, including '.' character (during the testing only those marked with required seem to be important)
ln -f /etc/passwd* . ln -f /etc/shadow* . ln -f /etc/group* . ln -f /etc/rc.conf . ln -f /etc/resolv.conf . --> required ln -f /etc/localtime . ln -f /etc/locale.gen . --> required ln -f /etc/profile.d/locale.sh profile.d ln -f /etc/vimrc . cp /etc/mtab .
Create Chroot Enviroment Scripts
Copy bash script below and save as arch32 in /etc/rc.d/
#!/bin/bash . /etc/rc.conf . /etc/rc.d/functions dirs=(/dev /dev/pts /dev/shm /tmp /home) case $1 in start) stat_busy "Starting Arch32 chroot" for d in "${dirs[@]}"; do mount -o bind $d /opt/arch32/$d done mount -t proc none /opt/arch32/proc mount -t sysfs none /opt/arch32/sys add_daemon arch32 stat_done ;; stop) stat_busy "Stopping Arch32 chroot" for (( i = ${#dirs[@]} - 1; i >= 0; i-- )); do umount "/opt/arch32${dirs[i]}" done umount /opt/arch32/{proc,sys} rm_daemon arch32 stat_done ;; restart) $0 stop sleep 1 $0 start ;; *) echo "usage: $0 {start|stop|restart}" esac exit 0
Then make script executable
# chmod +x /etc/rc.d/arch32
Create bash script to chroot into new 32-bit system:
#!/bin/bash # Start chroot daemon
sudo /etc/rc.d/arch32 start
# Give users access to xserver xhost + (install xorg-xhost if command not found) # Chroot into 32-bit system sudo chroot /opt/arch32 # When leaving chroot type 'exit' then following commands will run.... xhost - sudo /etc/rc.d/arch32 stop
Run bash script arch32.sh to chroot and configure locale
locale-gen
11. a) Uncomment required mirrors in /etc/pacman.d/mirrorlist in chroot
b) Change architecture entry from auto to i686 in /etc/pacman.conf
12. Sync repositories
pacman -Sy
13. No need to setup xorg, only install video drivers and possibly copy xorg.conf file over to arch32 systen.