Public bug reported:
Missing target device info makes it impossible to retrieve network usage
information about a guest from libvirt.
Reproduce:
Trigger of issue unknown.
Workaround:
Restart the guest, and the network device info reappears again.
Detect:
Use virsh with the dumpxml command to view information about a running guest.
Good result:
virsh # dumpxml myhost1
...
<interface type='bridge'>
<mac address='52:54:00:11:a6:2c'/>
<source bridge='br0'/>
<target dev='vnet0'/>
<model type='virtio'/>
</interface>
...
Bad result:
virsh # dumpxml myhost2
...
<interface type='bridge'>
<mac address='52:54:14:79:32:6d'/>
<source bridge='br0'/>
<model type='virtio'/>
</interface>
...
I am attaching an image of my munin graphs to illustrate the effects of
the bug.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: libvirt-bin 0.7.5-5ubuntu27.6
ProcVersionSignature: Ubuntu 2.6.32-23.37-server 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-server x86_64
Architecture: amd64
Date: Thu Oct 28 13:40:36 2010
InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64
(20100427)
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: libvirt
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid
--
target device info is not in dumpxml
https://bugs.launchpad.net/bugs/668042
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