Bug 650543

Summary: target device info is not in dumpxml
Product: [Community] Virtualization Tools Reporter: Steven Wagner <stevenwagner>
Component: libvirtAssignee: Daniel Veillard <veillard>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: low    
Version: unspecifiedCC: berrange, crobinso, xen-maint
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2010-11-10 23:15:31 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Steven Wagner 2010-11-07 00:02:36 UTC 
Description of problem:

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>
    ...

Version-Release number of selected component (if applicable):
libvirt 0.7.5
Comment 1 Daniel Berrangé 2010-11-10 23:15:31 UTC 
Fixed several releases ago by this commit

commit 362bc09a4d9441f9abd14956546777f86d8b9d79
Author: Jiri Denemark <jdenemar>
Date:   Tue May 4 15:16:29 2010 +0200

    Don't wipe generated iface target in active domains
    
    Wipe generated interface target only when reading configuration of
    inactive domains.


You need to update to something newer than 0.7.5, or pull in that patch to your build
Comment 2 Steven Wagner 2010-11-12 01:31:02 UTC 
THANK YOU!