I have seen those documents, I did not see anything that indicates how _automatic_ bridge configuration could be enabled with xl.

For my specific set up I have two bridges (xenbr0 -> peth0 & xenbr1 -> peth1). If I have to configure this manually with ifcfg scripts I will, but if an automatic method is provided or is possible with xl I'd prefer to use that.

-Gene

On Thu, Jan 29, 2015 at 4:07 AM, Lars Kurth lars.kurth.xen@gmail.com wrote:

Gene, I think you should find the answers in

• http://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt (bottom of

page)

• http://wiki.xenproject.org/wiki/Migration_Guide_To_Xen4.1%2B

http://wiki.xenproject.org/wiki/Migration_Guide_To_Xen4.1+

http://wiki.xenproject.org/wiki/Network_Configuration_Examples_%28Xen_4.1%2B... http://wiki.xenproject.org/wiki/Network_Configuration_Examples_(Xen_4.1+)

• http://wiki.xenproject.org/wiki/XL_vs_Xend_Feature_Comparison may also

be relevant If not, circle back to the list and I am sure someone else will be able to answer Regards Lars

On 29 Jan 2015, at 08:39, Gene gh5046@gmail.com wrote:

I normally use the network-script parameter in the '/etc/xen/xend-config.sxp' configuration file to configure network bridges. However, the latest release of Xen4CentOS (which comes with Xen 4.4.1) has xend disabled by default.

Can I continue to use network-script without xend? If not what is the recommended method for automatically configuring network bridges with the latest release of Xen4CentOS?

I know I can just enable xend to continue using this script, but since Xen 4.5 is apparently dropping xend altogether I figure I should change my standard configuration starting now.

Thanks in advance for your time.

-Gene

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On Fri, Jan 30, 2015 at 4:39 PM, George Dunlap dunlapg@umich.edu wrote:

On Thu, Jan 29, 2015 at 11:28 AM, Gene gh5046@gmail.com wrote:

...

I have seen those documents, I did not see anything that indicates how _automatic_ bridge configuration could be enabled with xl.

For my specific set up I have two bridges (xenbr0 -> peth0 & xenbr1 -> peth1). If I have to configure this manually with ifcfg scripts I will, but if an automatic method is provided or is possible with xl I'd prefer to use that.

Thanks Gene -- I'll add a note about the transition to network-scripts in the CentOS "migrating to xl" document.

And coming around again: if you need pair bonding and VLAN tagging, the best guideline is probably my old one: for KVM at https://wikis.uit.tufts.edu/confluence/display/TUSKpub/Configure+Pair+Bondin...

The more recent versions of NetworkManager for RHEL 7 and Fedora apparently support VLAN tagging and pair bonding, but the interface is poor. If you want it to be robust and reliable for virtualization server, I'll urge you to set "NM_CONTROLLED=no" in /etc/sysconfig/network, so it's inherited by default for all network ports.

I'e some long rants about the unsuitability of NetworkManager for servers we could expolore some time if you need it. But especially for a virtualizaton server as opposed to a guest VM, It's dangerously destabilizing