Installing VirtualBox in unRAID

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Use these instructions with discretion.

This guide is a walk through for unRAID users that want to be able to compile their own kernel headers, and therefore compile and run VirtualBox into unRAID server. Note that a huge amount of RAM is necessary for compile and run VBox, so I recommend 4GB+ of RAM.


Dependencies

First of all, you have to satisfy these dependencies:

a) Vanilla copy of Linux kernel;

b) gcc, glibc, binutils, make, patch, perl, ncurses, cpio, pkgtools and cxxlibs packages;

c) VirtualBox Linux "All Distributions" 32bits package.


At the time of writing, using unRAID 4.7, all those packages can be found at the following locations:


For unRAID version 5.x, those packages can be found here:

For unRAID version 5 RC13 and newer (kernel 3.9 and greater), you will also need these packages:

Installing the kernel source and making your own headers

First, install the ".tgz" or ".txz" packages from above. Code: 

# unRAID 4.7 "tgz" files
installpkg binutils-2.18.50.0.9-i486-1.tgz
installpkg cpio-2.5-i486-3.tgz
installpkg cxxlibs-6.0.9-i486-1.tgz
installpkg gcc-4.2.4-i486-1.tgz
installpkg glibc-2.7-i486-17.tgz
installpkg make-3.81-i486-1.tgz
installpkg ncurses-5.6-i486-3.tgz 
installpkg pkgtools-12.1.0-noarch-7.tgz
installpkg patch-2.5.4-i486-1.tgz
installpkg perl-5.10.0-i486-1.tgz

# unRAID 5.x "txz" files
installpkg binutils-2.20.51.0.8-i486-1.txz
installpkg cxxlibs-6.0.13-i486-2.txz
installpkg gcc-4.4.4-i486-1.txz
installpkg gcc-g++-4.4.4-i486-1.txz 
installpkg glibc-2.11.1-i486-3.txz
installpkg make-3.81-i486-1.txz
installpkg mpfr-2.4.2p03-i486-1.txz
installpkg ncurses-5.7-i486-1.txz
installpkg patch-2.5.4-i486-1.txz
installpkg perl-5.10.1-i486-1.txz


Go to "/usr/src" directory, and rename the folder "linux" to "linux_original". Code: 

$ mv /usr/src/linux /usr/src/linux_original

Note: On unRAID 5.x you will see the kernel version at the end of "/usr/src/linux". For example in 5.0 - i386, use this command instead. Code: 

$ mv /usr/src/linux-3.9.6p-unRAID /usr/src/linux_original


Now extract the vanilla kernel file (change linux-2.6.32.9.tar.gz to match your version's kernel) into "/usr/src": Code: 

$ tar -C /usr/src -zxvf linux-2.6.32.9.tar.gz


Link the new source directory (change linux-2.6.32.9 to match your version's kernel) to "/usr/src/linux" path: Code: 

$ ln -sf /usr/src/linux-2.6.32.9 /usr/src/linux


Copy all default drivers and configuration to the new source directory: Code: 

$ cp -rf /usr/src/linux_original/* /usr/src/linux/
$ cp -f /usr/src/linux_original/.config /usr/src/linux/


Move existing kernel headers includes, and replace them with the new source includes: Code: 

$ [ -e "/usr/include/linux" ] && mv /usr/include/linux /usr/include/linux_original
$ [ -e "/usr/include/asm-generic" ] && mv /usr/include/asm-generic /usr/include/asm-generic_original
$ [ -e "/usr/include/asm" ] && mv /usr/include/asm /usr/include/asm_original


On unRAID 5 RC12 and lower (including unRAID 4.7), you can link the following sources: Code: 

$ ln -sf /usr/src/linux/include/asm-generic /usr/include/asm-generic
$ ln -sf /usr/src/linux/include/linux /usr/include/linux
$ ln -sf /usr/src/linux/arch/x86/include/asm /usr/include/asm

On unRAID 5 RC13 and newer, the kernel headers API for userspace had been splitted: http://lwn.net/Articles/507794/ So the links are a bit different:

Code: 

$ ln -sf /usr/src/linux/include/uapi/asm-generic /usr/include/asm-generic
$ ln -sf /usr/src/linux/include/uapi/linux /usr/include/linux
$ ln -sf /usr/src/linux/arch/x86/include/uapi/asm /usr/include/asm
$ cp /usr/src/linux/tools/perf/util/include/linux/compiler.h /usr/include/linux/


Now it's time to compile the kernel source: Code: 

$ cd /usr/src/linux
$ make oldconfig && make


Congratulations, now you have your own headers!


Installing VirtualBox

Make a directory to store your configuration (e.g. /boot/custom/vbox ), and link it to root home folder: Code: 

$ mkdir -p /boot/custom/vbox && ln -sf /boot/custom/vbox /root/.VirtualBox


Run the VirtualBox<version>.run file: Code: 

$ sh VirtualBox<version>.run


If it claims that the temporary dir doesn't have enough space, you have to make a new temp dir (e.g. /mnt/cache/tmp ) and type: Code: 

$ export TMPDIR=<new tmpdir> && sh VirtualBox<version>.run


If everything worked fine, you now have a working copy of VirtualBox running into your server. It's time to make it permanent over reboots.


Making a VBox package

VirtualBox installer extracts binary files to "/opt/VirtualBox" directory, creates an udev rule, compiles and insert the kernel modules and creates a lot of links, so we have to do all these steps using a package.

1) Create a folder for temporary files (e.g. /mnt/cache/vbox_package ):

Code: 

$ mkdir /mnt/cache/vbox_package


2) Copy these directories to your temp folder:

Code: 

$ cd /mnt/cache/vbox_package/
$ cp --parents -rf /opt/VirtualBox ./
$ cp --parents -f /lib/modules/`uname -r`/misc/vboxdrv.ko ./
$ cp --parents -f /lib/modules/`uname -r`/misc/vboxnetadp.ko ./
$ cp --parents -f /lib/modules/`uname -r`/misc/vboxnetflt.ko ./
$ cp --parents -rf /etc/vbox ./
$ cp --parents -f /etc/udev/rules.d/10-vboxdrv.rules ./


3) Make an "install" dir under your temp folder:

Code: 

$ mkdir /mnt/cache/vbox_package/install


4) For unRAID 4.7, under the new "install" folder, create a "doinst.sh" file with this content:

Code: 

# Insert VBox modules on the kernel
insmod /lib/modules/`uname -r`/misc/vboxdrv.ko
insmod /lib/modules/`uname -r`/misc/vboxnetadp.ko
insmod /lib/modules/`uname -r`/misc/vboxnetflt.ko

# Create some necessary links
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxHeadless
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxManage
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxSDL
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxVRDP
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VirtualBox
ln -sf /usr/bin/VBoxHeadless /usr/bin/vboxheadless
ln -sf /usr/bin/VBoxManage /usr/bin/vboxmanage
ln -sf /usr/bin/VBoxSDL /usr/bin/vboxsdl
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/vboxwebsrv

# Reload udev rules
udevadm control --reload-rules

# Expac USB fix
groupadd vboxusers
usermod -a vboxusers root
usermod -a vboxusers nobody
mkdir /dev/vboxusb -m 0750
chown root:vboxusers /dev/vboxusb

# Create and link the configuration dir
mkdir -p /boot/custom/vbox -m 0777
ln -sf /boot/custom/vbox /root/.VirtualBox

# Auto-generated rules

4) Or for unRAID 5.x, under the new "install" folder, create a "doinst.sh" file with this content:

Code: 

# Insert VBox modules on the kernel
insmod /lib/modules/`uname -r`/misc/vboxdrv.ko
insmod /lib/modules/`uname -r`/misc/vboxnetadp.ko
insmod /lib/modules/`uname -r`/misc/vboxnetflt.ko

# Create some necessary links
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxHeadless
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxManage
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxSDL
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxVRDP
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VirtualBox
ln -sf /usr/bin/VBoxHeadless /usr/bin/vboxheadless
ln -sf /usr/bin/VBoxManage /usr/bin/vboxmanage
ln -sf /usr/bin/VBoxSDL /usr/bin/vboxsdl
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/vboxwebsrv

# Reload udev rules
udevadm control --reload-rules

# Expac USB fix
groupadd vboxusers
usermod -aG vboxusers root
usermod -aG vboxusers nobody
mkdir /dev/vboxusb -m 0750
chown root:vboxusers /dev/vboxusb

# Create and link the configuration dir
mkdir -p /boot/custom/vbox -m 0777
ln -sf /boot/custom/vbox /root/.VirtualBox

# Auto-generated rules


5) Finally, create the package:

Code: 

$ cd /mnt/cache/vbox_package && makepkg /boot/vbox-unRAID.tgz


Other considerations

VBox can be managed from command line, but there is a very nice GUI that runs in php, named phpvirtualbox: http://code.google.com/p/phpvirtualbox/

If you want to run it from your unRAID server, you will need a http server, like lighttpd, and the php package installed. If anyone wishes to contribute with directions, please be my guest.


Helpfull scripts

This are scripts I made myself trying to automate the headers compilation and the VirtualBox package creation. Please note that those scripts doesn't have any control for errors or missing links, so you're advised to check all links before run them.


Headers and development tools to unRAID 4.7: 

#!/bin/bash
P="$(dirname "$(readlink -f ${BASH_SOURCE[0]})")"

[ ! -d "$P/packages" ] && mkdir $P/packages

cd $P/packages

[ ! -e "linux-2.6.32.9.tar.gz" ] && wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.32.9.tar.gz
[ ! -e "gcc-4.2.4-i486-1.tgz" ] && wget http://slackware.oregonstate.edu/slackware-12.2/slackware/d/gcc-4.2.4-i486-1.tgz
[ ! -e "glibc-2.7-i486-17.tgz" ] && wget http://slackware.oregonstate.edu/slackware-12.2/slackware/l/glibc-2.7-i486-17.tgz
[ ! -e "binutils-2.18.50.0.9-i486-1.tgz" ] && wget http://slackware.oregonstate.edu/slackware-12.2/slackware/d/binutils-2.18.50.0.9-i486-1.tgz
[ ! -e "make-3.81-i486-1.tgz" ] && wget http://slackware.oregonstate.edu/slackware-12.2/slackware/d/make-3.81-i486-1.tgz
[ ! -e "cxxlibs-6.0.9-i486-1.tgz" ] && wget http://slackware.oregonstate.edu/slackware-12.2/slackware/a/cxxlibs-6.0.9-i486-1.tgz
[ ! -e "pkgtools-12.1.0-noarch-7.tgz" ] && wget http://slackware.osuosl.org/slackware-12.2/slackware/a/pkgtools-12.1.0-noarch-7.tgz
[ ! -e "perl-5.10.0-i486-1.tgz" ] && wget http://slackware.osuosl.org/slackware-12.2/slackware/d/perl-5.10.0-i486-1.tgz
[ ! -e "cpio-2.5-i486-3.tgz" ] && wget http://slackware.osuosl.org/slackware-12.2/slackware/a/cpio-2.5-i486-3.tgz
[ ! -e "patch-2.5.4-i486-1.tgz" ] && wget http://slackware.osuosl.org/slackware-12.2/slackware/a/patch-2.5.4-i486-1.tgz
[ ! -e "ncurses-5.6-i486-3.tgz" ] && wget http://slackware.osuosl.org/slackware-12.2/slackware/l/ncurses-5.6-i486-3.tgz

installpkg *.tgz

cd /

mv /usr/src/linux /usr/src/linux_original

if [ ! -d "$P/headers" ]; then
   mkdir -p $P/headers
   tar -C $P/headers -zxvf $P/packages/linux-2.6.32.9.tar.gz
   cp -rf /usr/src/linux_original/* $P/headers/linux-2.6.32.9/
   cp -f /usr/src/linux_original/.config $P/headers/linux-2.6.32.9/
fi

ln -sf $P/headers/linux-2.6.32.9 /usr/src/linux
[ -e "/usr/include/linux" ] && mv /usr/include/linux /usr/include/linux_original
[ -e "/usr/include/asm-generic" ] && mv /usr/include/asm-generic /usr/include/asm-generic_original
[ -e "/usr/include/asm" ] && mv /usr/include/asm /usr/include/asm_original
ln -sf /usr/src/linux/include/asm-generic /usr/include/asm-generic
ln -sf /usr/src/linux/include/linux /usr/include/linux
ln -sf /usr/src/linux/arch/x86/include/asm /usr/include/asm

cd /usr/src/linux && make oldconfig && make


Headers and development tools to unRAID 5.0: 

#!/bin/bash
P="$(dirname "$(readlink -f ${BASH_SOURCE[0]})")"
KVERSION="3.9.6"
KDIR="/usr/src/linux-$(uname -r)"
HEADERS="kernel-headers-$(uname -r).txz"

[ ! -d "$P/packages" ] && mkdir $P/packages

URLS="
https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.9.6.tar.gz
http://linorg.usp.br/slackware/slackware-13.1/slackware/d/gcc-4.4.4-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/l/glibc-2.11.1-i486-3.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/d/binutils-2.20.51.0.8-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/d/make-3.81-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/a/cxxlibs-6.0.13-i486-2.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/d/perl-5.10.1-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/a/patch-2.5.4-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/l/ncurses-5.7-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/l/mpfr-2.4.2p03-i486-1.txz
http://linorg.usp.br/slackware/slackware-13.1/slackware/d/gcc-g++-4.4.4-i486-1.txz 
http://linorg.usp.br/slackware/slackware-13.1/slackware/ap/bc-1.06.95-i486-1.txz
"
IFS=$'\n'; set -f;
for url in $URLS
do
	echo $url
	PKGPATH=${P}/packages/$(basename $url)
	[ ! -e "${PKGPATH}" ] && wget --no-check-certificate $url -O ${PKGPATH}
	[[ "${PKGPATH}" == *.txz ]] && upgradepkg --install-new ${PKGPATH}
	if [[ "${PKGPATH}" == *.tar.gz ]]; then
		[ ! -d "$P/linux-$KVERSION" ] && tar -C $P -zxvf ${PKGPATH};
	fi
done

[ -e "${HEADERS}" ] && installpkg ${HEADERS} && exit 0

rm /usr/src/linux
ln -sf $P/linux-$KVERSION /usr/src/linux

cd /usr/src/linux-$(uname -r) && find . -maxdepth 1 -exec cp -rf '{}' $P/linux-$KVERSION/ \;
dirs=$(find /usr/src/linux/include/uapi/* -maxdepth 0 -printf "%f\n"); 
mkdir /usr/include_bkp

for d in $dirs; do
	[ -e "/usr/include/$d" ] && mv /usr/include/$d /usr/include_bkp/
	ln -sf /usr/src/linux/include/uapi/$d /usr/include/
done

[ -e "/usr/include/asm" ] && mv /usr/include/asm /usr/include_bkp
ln -sf /usr/src/linux/arch/x86/include/uapi/asm /usr/include/
cp /usr/src/linux/tools/perf/util/include/linux/compiler.h /usr/include/linux/

cd /usr/src/linux && yes "" | make oldconfig && make -j4

[ -e "$P/root" ] && rm -rf $P/root/; mkdir -p $P/root/usr

make headers_install INSTALL_HDR_PATH=$P/root/usr

cd $P/root/ && makepkg ../kernel-headers-$(uname -r).txz


VirtualBox package creation: 

#!/bin/bash
VBOXVERSION="4.0.6"

P="$(dirname "$(readlink -f ${BASH_SOURCE[0]})")"
TMPDIR="$P/vbox_temp"

[ -d "$TMPDIR" ] && rm -rf $TMPDIR

mkdir $TMPDIR

cd $TMPDIR
cp --parents -rf /opt/VirtualBox $TMPDIR/
cp --parents -f /lib/modules/`uname -r`/misc/vboxdrv.ko $TMPDIR/
cp --parents -f /lib/modules/`uname -r`/misc/vboxnetadp.ko $TMPDIR/
cp --parents -f /lib/modules/`uname -r`/misc/vboxnetflt.ko $TMPDIR/
cp --parents -rf /etc/vbox $TMPDIR/
cp --parents -f /etc/udev/rules.d/10-vboxdrv.rules $TMPDIR/


mkdir $TMPDIR/install

cat >>$TMPDIR/install/doinst.sh << 'THE_END_OF_SCRIPT'
# Insert VBox modules on the kernel
insmod /lib/modules/`uname -r`/misc/vboxdrv.ko
insmod /lib/modules/`uname -r`/misc/vboxnetadp.ko
insmod /lib/modules/`uname -r`/misc/vboxnetflt.ko

# Create some necessary links
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxHeadless
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxManage
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxSDL
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxVRDP
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VirtualBox
ln -sf /usr/bin/VBoxHeadless /usr/bin/vboxheadless
ln -sf /usr/bin/VBoxManage /usr/bin/vboxmanage
ln -sf /usr/bin/VBoxSDL /usr/bin/vboxsdl
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/vboxwebsrv

# Reload udev rules
udevadm control --reload-rules

# Link the configuration dir
[ ! -d "/boot/custom/vbox" ] && mkdir -p /boot/custom/vbox
ln -sf /boot/custom/vbox /root/.VirtualBox

# Auto-created rules
THE_END_OF_SCRIPT

cd $TMPDIR/ && makepkg ../VirtualBox-${VBOXVERSION}-unRAID.tgz
rm -rf $TMPDIR
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