Re: [Xen-users] Random swap of interfaces at domU startup

["Liang Yang" <multisyncfe991@xxxxxxxxxxx>]

Hi,

Somtimes I had the exactly situation as you. I found Xen Linux sometimes 
swap eth0 and eth1 for no reason. For example, the port0 on the NIC is 
connected to a DHCP server while the port 1 on the NIC is using static IP 
address. Sometimes i found Xen just swapped eth0 and eth1.
Don't know why.

Liang

----- Original Message ----- 
From: "Frédéric VANNIÈRE" <frederic@xxxxxxxxxxx>
To: <xen-users@xxxxxxxxxxxxxxxxxxx>
Sent: Thursday, January 18, 2007 12:01 PM
Subject: [Xen-users] Random swap of interfaces at domU startup


> Hello,
>
> I'm using xen 3.0.4 with a custom kernel (with drbd) and
> quite often xen inverts eth0 and eth1. In order to have correct
> interfaces I need to restart the domU
>
> The virtual interfaces vifX.0 and vifX.1 should be connected
> to xenbr0 and xenbr1 respectively but sometimes they are connected
> to xenbr1 and xenbr0.
>
>
>
>
>
> configuration file:
> -------------------
> kernel = "/boot/vmlinuz-2.6-xenU"
> memory = 2048
> name = "xxxx-secours"
> disk = [ "phy:xen_data/xxxx-secours,hda1,w",
>          "phy:xen_data/xxxx-secours_swap,hda2,w",
>          "phy:xen_data/xxxx-secours_drbd,hda3,w"]
> root = "/dev/hda1 ro"
> vif = [
>     "mac=00:26:3E:7B:0B:22,bridge=xenbr0,ip=192.168.2.144",
>     "mac=00:26:3E:7B:0B:23,bridge=xenbr1,ip=10.1.0.20",
>       ]
> gateway = "192.168.2.1"
> netmask = "255.255.255.0"
> hostname = "xxxx-secours"
> on_poweroff = "destroy"
> on_reboot = "restart"
> on_crash = "restart"
>
>
> xm list
> -------
> Name                          ID   Mem VCPUs      State   Time(s)
> Domain-0                       0   257     1     r-----   7338.2
> xxxx-secours                 11  2048      1     -b----    354.9
> yyyy-secours                  13   728     1     -b----    437.0
>
>
>
> brctl show all  when OK
> -----------------------
> xenbr0          8000.feffffffffff       no              peth0
>                                                         vif0.0
>                                                         vif11.0
>                                                         vif13.0
> xenbr1          8000.feffffffffff       no              peth1
>                                                         vif0.1
>                                                         vif11.1
>                                                         vif13.1
>
>
>
> brctl show all  when inverted
> ------------------------------
> xenbr0          8000.feffffffffff       no              peth0
>                                                         vif0.0
>                                                         vif11.0
>                                                         vif13.1
> xenbr1          8000.feffffffffff       no              peth1
>                                                         vif0.1
>                                                         vif11.1
>                                                         vif13.0
>
>
>
>
>
>
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