Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

=== *Gordon Messmer* wrote On 02/07/2012 07:26 PM, Devin Reade wrote: >/ I had a lot of problems with the network stack on VMs, both under />/ VMWare ESXi and Xen where the network would just go numb. After a />/ lot of splunking I determined that it seemed

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

On 02/07/2012 07:26 PM, Devin Reade wrote: > I had a lot of problems with the network stack on VMs, both under > VMWare ESXi and Xen where the network would just go numb. After a > lot of splunking I determined that it seemed to be related to > faulty TCP segment offload. Yeah, wow. You just jog

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

Although it was written in the context of Xen, you might also want to have a look at the netloop nloopbacks parameter as described in . On a Xen cluster with 3 physical interfaces per node I had to

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

On 02/06/2012 09:28 PM, Bob Hoffman wrote: > I put this page together just so I won't spam the board anymore begging > for help..lol > http://bobhoffman.com/vmissue.html You're using bonding mode 0, which may not work when attached to a bridge. Try changing to mode 1 and playing with the cables.

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

Devin Reade wrote: [...] > While I had the above command in rc.local, I would also run the > attached script in /etc/cron.hourly as there were some circumstances > where tso would get reenabled. And in case attachments get stripped on the mailing list, you can also get the script here:

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

I have no idea if this is the source of your problem (I wasn't using bonded interfaces), but it's sufficiently similar that you might want to try it. I had a lot of problems with the network stack on VMs, both under VMWare ESXi and Xen where the network would just go numb. After a lot of splunkin

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

well, had to add something to it. I found out I was having an issue with the addon ethernet card (e1000) 'link detected no' and it not working. Took it out? Yep? Work? No. However, I did add a second vm and something interesting is happening one vm stays up, one will crash...the one tha

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

Hi all, thanks for taking an interest. been populating the page with all the data I could. as someone who sent me a mail noticed that there was still some networkmanager stuff in the log messages. I have disabled it before..and did so again, fresh reboot and there it was. I am using startx to e

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

On Mon, Feb 6, 2012 at 23:22, Patrick Lists wrote: > On 07-02-12 04:28, Bob Hoffman wrote: >> I put this page together just so I won't spam the board anymore begging >> for help..lol >> http://bobhoffman.com/vmissue.html > > According to http://wiki.centos.org/TipsAndTricks/BondingInterfaces > the

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

On 02/06/2012 07:28 PM, Bob Hoffman wrote: > I put this page together just so I won't spam the board anymore begging > for help..lol > http://bobhoffman.com/vmissue.html http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Virtualization/sect-Virtualization-Network_Configuration-Bridg

Re: [CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

On 07-02-12 04:28, Bob Hoffman wrote: > I put this page together just so I won't spam the board anymore begging > for help..lol > http://bobhoffman.com/vmissue.html According to http://wiki.centos.org/TipsAndTricks/BondingInterfaces there should not be a HWADDR= in ifcfg-eth0. Regards, Patrick

[CentOS] my notes on bond, bridge, network, kvm, host and virtual so far

I put this page together just so I won't spam the board anymore begging for help..lol http://bobhoffman.com/vmissue.html This shows a working effort of bonded eths, bridged into a vm, and a few other things. The only missing thing is something on the host that ends up putting the VM internet co