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AW: [Xen-users] After migration: network-device of dom0 lost?!

To: "horacio ibrahim" <horacioibrahim@xxxxxxxxx>
Subject: AW: [Xen-users] After migration: network-device of dom0 lost?!
From: "Rustedt, Florian" <Florian.Rustedt@xxxxxxxxxxx>
Date: Fri, 27 Feb 2009 15:20:55 +0100
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Thread-topic: [Xen-users] After migration: network-device of dom0 lost?!

Yes. As mentioned, after the breakdown ifconfig lists eth0 like before.
 
After doing an ifconfig eth0 down followedby an up, i get now "connect: Network is unrechable" what was before "Network timeout"


Von: horacio ibrahim [mailto:horacioibrahim@xxxxxxxxx]
Gesendet: Freitag, 27. Februar 2009 12:27
An: Rustedt, Florian
Betreff: Re: [Xen-users] After migration: network-device of dom0 lost?!

When you try restart network (e.g. service network restart) received a message "eth0 does not exists". But can you to execute #ifconfig eth0 up or #ifconfig eth0 down without error?

What the version of XEN?

On Fri, Feb 27, 2009 at 7:08 AM, Rustedt, Florian <Florian.Rustedt@xxxxxxxxxxx> wrote:
xen1 ~ # ls /sys/class/net/
eth0  eth1  lo  peth0  veth0  veth1  veth2  veth3  vif0.0  vif0.1  vif0.2  vif0.3
 
After migration:
xen1 ~ # ls /sys/class/net/
eth0  eth1  lo  peth0  veth0  veth1  veth2  veth3  vif0.0  vif0.1  vif0.2  vif0.3  vif1.0
 


Von: horacio ibrahim [mailto:horacioibrahim@xxxxxxxxx]
Gesendet: Donnerstag, 26. Februar 2009 18:27
An: Rustedt, Florian
Betreff: Re: [Xen-users] After migration: network-device of dom0 lost?!

The iface eth0 exists in /sys/class/net/eth0 (in Xen1)?

Also exists: vteh0 and peth0 (in XEN1)?

On Thu, Feb 26, 2009 at 12:36 PM, Rustedt, Florian <Florian.Rustedt@xxxxxxxxxxx> wrote:
Hello list,

I am migrating a domU from dom0: XEN0 to Ddom0: XEN1. Both are connected via eth1, both are connected to the net via (p)eth0.
While doing this, my ssh-connection to the domU keeps running well.

After about a minute, i get a "remote host closed the connection".
If i try to log into host domU or XEN1 then via ssh, i get a "connection timed out".

If i then check the logs locally on XEN1, there's nothing special in them.

On XEN1 i have no network any more except the eth1 connection to XEN0. I even can't ping the gateway in the same subnet!!

Checking ifconfig, route and resolv.conf doesn't help either, they are all the same as before the error, pretending all is ok. Dmesg is clean. The logs are clean, as told before.

If i try to restart networking, i get an error telling me, that network device eth0 does not exist?!? After that, dmesg hasn't got any additionally entries...

What could that be? What could have destroyed my (p)eth0 shortly after migrating?

Cheers, Florian
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