SergeHallyn_libvirtnest
Differences between revisions 1 and 2
⇤ ← Revision 1 as of 2011-07-22 13:42:12
2845
Comment:
|
2971
|
Deletions are marked like this. | Additions are marked like this. |
Line 83: | Line 83: |
or wget http://cdimage.debian.org/cdimage/daily-builds/daily/arch-latest/amd64/iso-cd/debian-testing-amd64-businesscard.iso |
Sometimes to reproduce a bug or verify a fix to libvirt, you want to just be able to start a qemu VM under KVM, not really caring what it does. These instructions will get you there, assuming you are on a standard Ubuntu ec2 image, as user ubuntu with libvirt and qemu installed.
This will attach to a bridge called br0. Change that name if you need to.
- Start by creating a file 'cdboot.xml', with the following contents:
<domain type='qemu'> <name>cdboot</name> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/home/ubuntu/cdboot.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <source file='/home/ubuntu/debian-6.0.2.1-amd64-businesscard.iso'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <source bridge='br0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes'/> <sound model='ac97'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </memballoon> </devices> </domain>
- Create the disk image:
qemu-img create cdboot.img 1G
- Get a tiny bootable iso:
wget http://cdimage.debian.org/debian-cd/6.0.2.1/amd64/iso-cd/debian-6.0.2.1-amd64-businesscard.iso or wget http://cdimage.debian.org/cdimage/daily-builds/daily/arch-latest/amd64/iso-cd/debian-testing-amd64-businesscard.iso
- Define the vm:
virsh define cdboot.xml
- Now the vm should be able to start
virsh start cdboot virsh list # this should show cdboot running. you can connect probably as 'gvncviewer :0' virsh destroy cdboot
- To make this vm autostart,
virsh autostart cdboot
SergeHallyn_libvirtnest (last edited 2012-07-16 14:34:50 by serge-hallyn)