Compile QEMU-KVM on Linux Mint 12 64bit ver.

Here’s an explanation of how to switch from the KVM installed via apt-get to the KVM building from the source.
I’ve installed the KVM ( kvm , libvirtd , virt-manager ) via apt-get and it works well.

This explanation is:

Use KVM kernel modules installed via apt-get ( kvm , kvm_intel or kvm_amd )
Use qemu-kvm built from the source.

# uname –ri 3.0.0-14-generic x86_64 # tail -1 /etc/lsb-release DISTRIB_DESCRIPTION="Linux Mint 12 Lisa" # kvm –version  <- installed via apt-get QEMU emulator version 0.15.0 (qemu-kvm-devel), Copyright (c) 2003-2008 Fabrice Bellard # libvirtd –version <- installed via apt-get libvirtd (libvirt) 0.9.2 # virt-manager –version <- installed via apt-get 0.9.0

- the preparation before building qemu-kvm from source

Install the following packages via apt-get to build qemu-kvm.

# LANG=C apt-get install gcc gcc-4.6 libsdl1.2-dev make libz-dev uuid-d ev libasound2-dev gcc libc6-dev zlib1g-dev linux-headers-3.0.0-14 Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'zlib1g-dev' instead of 'libz-dev' gcc is already the newest version. gcc-4.6 is already the newest version. libc6-dev is already the newest version. make is already the newest version. zlib1g-dev is already the newest version. The following extra packages will be installed:  libaa1-dev libaudio-dev libaudiofile-dev libavahi-client-dev  libavahi-common-dev libcaca-dev libdbus-1-dev libdrm-dev libesd0-dev  libgl1-mesa-dev libglu1-mesa-dev libkms1 libncurses5-dev libpulse-dev  libslang2-dev libtinfo-dev libxt-dev mesa-common-dev Suggested packages:  libasound2-doc ncurses-doc The following NEW packages will be installed:  libaa1-dev libasound2-dev libaudio-dev libaudiofile-dev libavahi-client-dev  libavahi-common-dev libcaca-dev libdbus-1-dev libdrm-dev libesd0-dev  libgl1-mesa-dev libglu1-mesa-dev libkms1 libncurses5-dev libpulse-dev  libsdl1.2-dev libslang2-dev libtinfo-dev libxt-dev mesa-common-dev uuid-dev 0 upgraded, 21 newly installed, 0 to remove and 0 not upgraded. Need to get 5447 kB of archives. After this operation, 25.2 MB of additional disk space will be used. Do you want to continue [Y/n]? y

Get the latest KVM source ( qemu-kvm-1.0.tar.gz ) from http://sourceforge.net/projects/kvm/files/

# ls qemu-kvm-1.0.tar.gz

- compile qemu-kvm

qemu-kvm does not include kvm-kmod ( KVM kernel modules )
I use KVM kernel modules which I have installed via apt-get.

# tar xzvf qemu-kvm-1.0.tar.gz # cd qemu-kvm-1.0/

# ./configure --prefix=/usr/local/kvm KVM support       yes # make # make install

# ls /usr/local/kvm/* /usr/local/kvm/bin: qemu-ga  qemu-img  qemu-io  qemu-nbd  qemu-system-x86_64 /usr/local/kvm/etc: qemu /usr/local/kvm/share: qemu

# /usr/local/kvm/bin/qemu-system-x86_64 --version QEMU emulator version 1.0 (qemu-kvm-1.0), Copyright (c) 2003-2008 Fabrice Bellard

make sure your OS has loaded KVM kernel modules.

# lsmod | grep kvm kvm_intel              61643  0 kvm                   383781  1 kvm_intel

- start the VM with qemu-kvm 1.0

I’ve already had the VM ( CentOS 6.2 ) , so I’ll fly this VM with qemu-kvm 1.0.

# /usr/local/kvm/bin/qemu-system-x86_64 -m 1024 -hda /var/disk1/libvirt/images/centos6-vm1.img -monitor telnet::4444,server,nowait -vnc :0 –daemonize

- Connect to the VM via VNC

check the PID of the VM.

# ps aux | grep qemu-system | grep centos /usr/local/kvm/bin/qemu-system-x86_64 -m 1024 -hda /var/disk1/libvirt/images/centos6-vm1.img -monitor telnet::4444,server,nowait -vnc :0 –daemonize

check the listen ports

# lsof -np 25904 | grep -i tcp qemu-syst 25904 root    3u  IPv4 2434434         0t0      TCP *:4444 (LISTEN) qemu-syst 25904 root   14u  IPv4 2432962         0t0      TCP *:5900 (LISTEN)

TCP port 5900 is for VNC access ( -vnc :0 )
TCP port 4444 is for qemu-monitor access. (-monitor telnet::4444,server,nowait )

start VNC viewer

$ vncviewer 127.0.0.1::5900  ( or vncviewer 127.0.0.1:0 )

- access to the qemu monitor via telnet

# telnet 127.1 4444 Trying 127.0.0.1... Connected to 127.1. Escape character is '^]'. QEMU 1.0 monitor - type 'help' for more information (qemu) info vnc Server:     address: 0.0.0.0:5900        auth: none Client:     address: 127.0.0.1:49941  x509_dname: none    username: none (qemu) info version 1.0.0 (qemu-kvm-1.0) (qemu) info status VM status: running (qemu) info kvm kvm support: enabled (qemu) system_powerdown (qemu) Connection closed by foreign host.

- memo

The binary file of qemu-kvm installed via apt-get is /usr/bin/kvm which is the symbolic link file of /usr/bin/qemu-system-x86_64.

# ls –l /usr/bin/kvm  ( install via apt-get ) lrwxrwxrwx 1 root root  /usr/bin/kvm -> qemu-system-x86_64 # ls -l /usr/bin/qemu-system-x86_64 ( install via apt-get ) -rwxr-xr-x 1 root root  /usr/bin/qemu-system-x86_64

The binary file of qemu-kvm built from the source is /usr/local/kvm/bin/qemu-system-x86_64

# ls /usr/local/kvm/bin/qemu-system-x86_64 ( built from the source ) /usr/local/kvm/bin/qemu-system-x86_64