Skip to content

Latest commit

 

History

History
170 lines (135 loc) · 4.26 KB

boot.md

File metadata and controls

170 lines (135 loc) · 4.26 KB

GiantVM Booting (Single machine, TCP)

Change HostOS kernel to Linux-DSM

1. Preparation

    sudo apt-get install build-essential openssl libncurses5-dev libssl-dev 
    sudo apt-get install zlibc minizip libidn11-dev libidn11 bison flex
    
    git clone https://github.com/xianliang66/Linux-DSM.git
    cd Linux-DSM

Switch the MACRO definition from USE_KRDMA_NETWORK to USE_KTCP_NETWORK in arch/x86/include/asm/kvm_host.h.

2. Enable DSM support in kernel config

    make menuconfig

Virtualization --> KVM distributed software memory support --> press 'Y' to include the option

Save --> Exit

3. Compile the kernel

    make -jN

N is the number of threads you'd like to run parallelly.

4. Install the kernel

    sudo make modules_install
    sudo make install

5. Update grub

    sudo update-grub

6. reboot

    reboot

Select the newly installed kernel, which should be 4.9.76+.

QEMU

1. Preparation

    sudo apt-get install python pkg-config libglib2.0-dev zlib1g-dev libpixman-1-dev libfdt-dev qemu-system-x86
    
    git clone https://github.com/xianliang66/QEMU.git
    cd QEMU

2. Configuration

    ./configure --target-list=x86_64-softmmu --enable-kvm

3. Compilation

    make -jN

4. Create hard disk image

    wget http://ftp.sjtu.edu.cn/ubuntu-cd/16.04.7/ubuntu-16.04.7-server-amd64.iso
    cd QEMU
    ./qemu-img create -f qcow2 ubuntu-server.img 10G
    qemu-system-x86_64 -m 1024 ubuntu-server.img -cdrom ../ubuntu-16.04.7-server-amd64.iso -enable-kvm

Run GiantVM on a single machine

We simulate two machines by running two QEMU processes on a single machine.

First we install vncviewer to monitor the guest.

   wget https://www.realvnc.com/download/file/viewer.files/VNC-Viewer-6.19.325-Linux-x64.deb
   sudo dpkg -i VNC-Viewer-6.19.325-Linux-x64.deb

Terminal 1:

    sudo x86_64-softmmu/qemu-system-x86_64 --nographic -hda ubuntu-server.img -cpu host -machine kernel-irqchip=off -smp 2 -m 2048  --enable-kvm -serial mon:stdio -local-cpu 1,start=0,iplist="127.0.0.1 127.0.0.1" -vnc :0

Terminal 2:

    sudo x86_64-softmmu/qemu-system-x86_64 --nographic -hda ubuntu-server.img -cpu host -machine kernel-irqchip=off -smp 2 -m 2048  --enable-kvm -serial mon:stdio -local-cpu 1,start=1,iplist="127.0.0.1 127.0.0.1"

Terminal 3:

    vncviewer :0

Network Configuration

By default, QEMU provides an emulated, user mode networking for VMs, which is slow compared with physical network devices.

We could configure a network bridge between the Host and the VM.

On Host:

  • Check network devices 
    ifconfig
Change all the "eth0" below to the name of the network device of your machine.

  • Create a bridge

    brctl addbr br0

  • Clear IP of eth0

    ip addr flush dev eth0

  • Add eth0 to bridge

     brctl addif br0 eth0

  • Create tap interface

     tunctl -t tap0 -u root

  • Add tap0 to bridge

     brctl addif br0 tap0

  • Make sure everything is up

     ifconfig eth0 up
 ifconfig tap0 up
 ifconfig br0 up

  • Check if properly bridged

     brctl show

  • Assign ip to br0

     dhclient -v br0

Reference: https://gist.github.com/extremecoders-re/e8fd8a67a515fee0c873dcafc81d811c

Run GiantVM with bridged network

Terminal 1:

    sudo x86_64-softmmu/qemu-system-x86_64 --nographic -hda ubuntu-server.img -cpu host -machine kernel-irqchip=off -smp 2 -m 2048  --enable-kvm -serial mon:stdio -local-cpu 1,start=0,iplist="127.0.0.1 127.0.0.1" -netdev tap,id=mynet0,ifname=tap0,script=no,downscript=no -device e1000,netdev=mynet0,mac=52:55:00:d1:55:01 -vnc :0

Terminal 2:

    sudo x86_64-softmmu/qemu-system-x86_64 --nographic -hda ubuntu-server.img -cpu host -machine kernel-irqchip=off -smp 2 -m 2048  --enable-kvm -serial mon:stdio -local-cpu 1,start=1,iplist="127.0.0.1 127.0.0.1"

Terminal 3:

    vncviewer :0

Author

Weiye Chen