• TipAndDoc/VM/KVM
  • TipAndDoc/VM/KVM
  • TipAndDoc/VM/KVM/kimchi
  • TipAndDoc/VM/KVM/passthrough
  • TipAndDoc/VM/KVM/virtio

KVM

• ​The Kernel Virtual Machine - Community Ubuntu Documentation
• ​KVM – Ubuntu Hardy | Ken's blog
• ​動き出したUbuntu Hardy on KVM | Ken's blog
• ​KVMを使う（Ubuntu Desktop編） « さくらインターネット研究所
• ​Stray Penguin - Linux Memo (KVM)
• ​Fedora 15 - KVM インストール

• KVM自体にはIntel-VT or AMD-V が必須

  egrep '(vmx|svm)' --color=always /proc/cpuinfo
  

  • AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ with ASUS M2A-VM HDMI => attachment:amdv.png​
• QEMUはVT/AMD-vが無くても動く(ただし非常に遅い)
  • -> LegacyHardware

• ​Sheepdog/概要 - Eucalyptus linux4u.jp Wiki

  SheepdogはKVM用の分散ストレージです．

• Guest with Bridged Network => network/bridge

Client

• ​http://www.davereyn.co.uk/ Qemu Manager (for Windows)
  • ローカルに対するGUIツールなので注意 (Linux boxへ接続して…という使い方は出来ない)
• ​Management Tools - KVM

Windows Guest

drivers

• NIC -> virtio
  • ​WindowsGuestDrivers/Download Drivers - KVM
    • ​http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/

• Video -> vmvga
  • ​http://softwareupdate.vmware.com/cds/
    • ​http://softwareupdate.vmware.com/cds/vmw-desktop/ws/8.0.1/528992/windows/packages/tools-windows-8.8.1.exe.tar
    1. tools-windows-8.8.1.exe.tar -> tools-windows-8.8.1.exe
    2. > tools-windows-8.8.1.exe /e tools-windows-8.8.1
    3. tools-windows-8.8.1\tools-windows.msi > Data1.cab > windows.iso > setup.exe (圧縮ファイルとして展開)
    4. > setup.exe /a
       • 64bitゲストの場合はsetup64.exeの中身が必要。
    5. 適当な場所に展開する
    6. VMware SVGA II driver > setup\Program Files\VMware\VMware Tools\VMware\Drivers\video_xpdm
  • 参考 ​Using Vmware VGA with KVM Windows Guests | KVM - The Linux Kernel-Based Virtual Machine

• デバイスマネージャ
  

virbr0

• libvirtdによって自動で作られる「default」のNAT
  • ps aux | grep dns

    nobody    2684  0.0  0.0  21264   792 ?        S    Feb07   0:01 dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/default.pid --conf-file=  --listen-address 192.168.122.1 --except-interface lo --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-lease-max=253
    

  • lease file => /var/lib/misc/dnsmasq.leases

iptables

• sudo iptables-save

  # Generated by iptables-save v1.4.8 on Thu Feb 16 10:31:29 2012
  *nat
  :PREROUTING ACCEPT [743892:129452770]
  :POSTROUTING ACCEPT [1179:112796]
  :OUTPUT ACCEPT [1215:115607]
  -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535 
  -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535 
  -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE 
  COMMIT
  # Completed on Thu Feb 16 10:31:29 2012
  # Generated by iptables-save v1.4.8 on Thu Feb 16 10:31:29 2012
  *filter
  :INPUT ACCEPT [4957020:3457557240]
  :FORWARD ACCEPT [0:0]
  :OUTPUT ACCEPT [3323525:4327643495]
  -A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT 
  -A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT 
  -A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT 
  -A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT 
  -A FORWARD -d 192.168.122.0/24 -o virbr0 -m state --state RELATED,ESTABLISHED -j ACCEPT 
  -A FORWARD -s 192.168.122.0/24 -i virbr0 -j ACCEPT 
  -A FORWARD -i virbr0 -o virbr0 -j ACCEPT 
  -A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable 
  -A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable 
  COMMIT
  # Completed on Thu Feb 16 10:31:29 2012
  

port forwarding

• ​Forwarding Incoming Connections

  3) Create the file /etc/libvirt/hooks/qemu (or add the following to an already existing hook script), with contents similar to the following (replace GNAME, IP, GP, and HP appropriately for your setup):

  • ​git repositories at zaytsev.net - anubis-puppet.git/blob - manifests/files/puppet/libvirt/hooks/qemu

Live Migration

• ​qemu-kvm の live migration を試してみたよ - cuspy diary
• ​KVMを使う（LiveMigration編） « さくらインターネット研究所
• ​Migration - KVM
• ​RHEL6.1のKVMでストレージ・ライブマイグレーション - めもめも

kvm-spice

• Ubuntu 12.04でqemu-kvm-spiceをインストールすると、デフォルトのemulatorが/usr/bin/kvm-spiceになって以下の様な問題が起きる

• kern.logにAppArmorからDENIEDとエラーが出る

  Oct 13 22:45:08 HOSTNAME kernel: [507466.445098] type=1400 audit(1350135908.372:69): apparmor="DENIED" operation="open" parent=1 profile="libvirt-52d08545-a490-c890-654a-260caf35d27d" name="/proc/17685/auxv" pid=17685 comm="kvm-spice" requested_mask="r" denied_mask="r" fsuid=104 ouid=104
  

• Video modelをcirrus以外にすると、画面が表示されなくなる(真っ黒のまま)

• ​Bug #958549 “Black screen on guest with anything except Cirrus” : Bugs : “seabios” package : Ubuntu