[libvirt] fc12 virsh tap device problem
Daniel P. Berrange
berrange at redhat.com
Thu Dec 10 11:41:28 UTC 2009
On Tue, Dec 08, 2009 at 07:07:33PM -0800, Chiradeep Vittal wrote:
> I have this xml:
> <domain type='kvm'>
> <name>centos</name>
> <uuid>22d9d573-d82c-c18d-36c0-d3ffef057468</uuid>
> <memory>131072</memory>
> <vcpu>1</vcpu>
> <os>
> <type arch='x86_64'>hvm</type>
> </os>
> <features>
> <acpi/>
> <pae/>
> </features>
> <clock offset='utc'/>
> <devices>
> <emulator>/usr/bin/qemu-kvm</emulator>
> <disk type='file' device='disk'>
> <source file='/var/lib/images/centos.5-4.x86-64/centos-small.img'/>
> <target dev='hda' bus='ide'/>
> </disk>
> <interface type='user'>
> <mac address='52:54:00:7e:5b:58'/>
> </interface>
> <interface type='ethernet'>
> <mac address='52:54:00:2e:33:c8'/>
> <script path='/var/lib/images/centos.5-4.x86-64/qemu-ifup'/>
> </interface>
The execution of scripts does not currently work, since we started using libcap-ng
to drop all capabilities on QEMU. It will be denied any access to create TAP devices
even when running as rot. You need to switch to bridge/network type interfaces which
makes libvirt configure the TAP device on QEMU's behalf.
> <graphics type='vnc' port='5910' autoport='no' listen=''/>
> </devices>
> </domain>
Daniel
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