Bug 784878 - Feature Request: change network of an interface while host is running
Summary: Feature Request: change network of an interface while host is running
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Virtualization Tools
Classification: Community
Component: libvirt
Version: unspecified
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Libvirt Maintainers
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-01-26 14:53 UTC by Hendrik Schwartke
Modified: 2016-04-23 23:27 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-04-23 23:27:10 UTC

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Description Hendrik Schwartke 2012-01-26 14:53:12 UTC 
Description of problem:

Currently it's not possible to change the network of an interface while the host is running. To change the network it's required to restart the host.
Comment 1 Hendrik Schwartke 2012-01-26 15:02:52 UTC 
Apparently the current state of an interface which is connected to a network is not stored in the struct data.network.actual of virDomainNetDef. So this has to be done first to make the change possible.
Comment 2 Ralf Spenneberg 2012-01-26 16:06:08 UTC 
To clarify this a little bit more. What Hendrik would like to do is to change the virtual network assigned to a virtual nic. 
We already proposed a patch to do this if the vNIC is assigned to externally configured bridge (see: https://bugzilla.redhat.com/show_bug.cgi?id=784767). 
This currently does not work with virtual networks created through libvirt because of comment 1.
Comment 3 Cole Robinson 2016-04-23 23:27:10 UTC 
Sorry this never received a timely response, but this seems to be implemented in libvirt nowadays. I can't find the exact commit though. Doing 'sudo virsh update-device xmlfile' pointing to an XML config with a different network setup is accepted and reflected correctly in the XML
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