Bug 705313

Summary: Attach interface doesn't work with RHEL6 supplied qemu-kvm
Product: [Community] Virtualization Tools Reporter: Neil Wilson <neil>
Component: libvirtAssignee: Libvirt Maintainers <libvirt-maint>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: crobinso, cwei, jtomko, xen-maint
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Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2015-03-18 08:09:40 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Neil Wilson 2011-05-17 10:51:55 UTC
Description of problem:

Libvirt  doesn't allow you to dynamically attach network interfaces on the RHEL6.0 supplied version of qemu-kvm


Version-Release number of selected component (if applicable):
libvirt  - tested on 0.8.8, code has not changed in 0.9.1 version.
qemu-kvm (0.12.1(qemu-kvm-0.12.1.2)) - version 2:0.12.1.2-2.113.el6_0.8


How reproducible:


Steps to Reproduce:
1. Launch server ('virsh create')
2. Create a bridge network with 'virsh net-create'
3. Attempt to associate bridge with server 
'virsh attach-interface srv-vvh2o network vir0001'


  
Actual results:
error: Failed to attach interface
error: internal error unable to add host net: unknown command: 'host_net_add'

Expected results:

Network should have been hotplugged into virtual server.


Additional info:

Checking the monitor command it looks like the version of qemu on RHEL6 has the 'netdev_add' command not the 'host_net_add' command.

The versioning in the qemu capabilities section of libvirt only activates this feature on qemu versions >= 13. 

RHEL6 qemu-kvm is showing '0.12.1(qemu-kvm-0.12.1.2)'

Comment 2 Jiri Denemark 2011-05-24 11:38:00 UTC
*** Bug 705235 has been marked as a duplicate of this bug. ***