[Bug 580454] [NEW] qemu-ifup script stops libvirt 'ethernet' interface machines from starting.

[Neil Wilson]

Public bug reported:

Binary package hint: qemu-kvm

qemu-kvm assumes that a bridge exists (/etc/qemu-ifup doesn't check if
the bridge exists before adding an interface to it.) and that the user
will always want the interface added to it.

This is not necessarily the case and causes properly defined machines
via libvirt to fail with a cryptic error.

error: Failed to start domain ubuntu
error: monitor socket did not show up.: Connection refused

neil at acer-aspire-5536:~$ virsh dumpxml ubuntu
<domain type='kvm'>
  <name>ubuntu</name>
  <uuid>a16c5cc6-fcec-f621-9dce-03e32c619f6f</uuid>
  <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/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/kvm</emulator>
    <disk type='file' device='disk'>
      <source file='/home/neil/machines/ubuntu-kvm/tmpSB2rjR.qcow2'/>
      <target dev='hda' bus='ide'/>
    </disk>
    <interface type='ethernet'>
      <mac address='52:54:00:4a:ca:ae'/>
      <model type='virtio'/>
    </interface>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'/>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
    </video>
  </devices>
</domain>

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: qemu-common 0.12.3+noroms-0ubuntu9
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Architecture: amd64
Date: Fri May 14 11:56:32 2010
Dependencies:
 seabios 0.5.1-0ubuntu2
 vgabios 0.6c-2ubuntu1
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1)
KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire 5536
PackageArchitecture: all
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=97bd7f86-677a-4093-8e28-e292a06e0ebd ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: qemu-kvm
dmi.bios.date: 02/27/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.03
dmi.board.name: JV50PU
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.03:bd02/27/2009:svnAcer:pnAspire5536:pvr0100:rvnAcer:rnJV50PU:rvrRev:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 5536
dmi.product.version: 0100
dmi.sys.vendor: Acer

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

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qemu-ifup script stops libvirt 'ethernet' interface machines from starting.
https://bugs.launchpad.net/bugs/580454
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