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xen-users
Re: [Xen-users] domU loses network after a while
Le 18/11/2010 19:33, Stein van Oevelen a écrit :
Nathan
Friess wrote:
Hi,
I have a host running Debian Squeeze with Xen 4.0.1 installed
from the Debian repository. My host is working fine running
10 domUs, except that after some number of days one or more
domUs lose their network interface. In dom0 and domU I'm
running kernel 2.6.32-5-xen-amd64 (PV kernel in Debian repo),
and interfaces are in a bridged config.
In case anyone runs into something similar, I did figure out how
to resolve my issue without having to reboot the domU... which
is a slight improvement I suppose.
Running
xm network-detach domUName 0
Causes eth0 to disappear in the domain, and the following to
show up in dmesg:
net eth0: xennet_release_rx_bufs: fix me for copying receiver.
Then running an xm network-attach will bring eth0 back and
everything will be okay.
I also tried rmmoding xen_netfront in domU before I figured out
the network-detach, but this doesn't help. When modprobing
again, the domU says "eth0: link is not ready". This also
causes any subsequent attempt to network-detach in dom0 to get
stuck and eventually timeout with "Device 0 (vif) could not be
disconnected."
Also, when the vif is stuck, the TX dropped packets shown in
dom0 is steadily increasing. It seems that dom0 is having
trouble sending packets to domU because one of the two gets
stuck in an unexpected state. At least doing a network-detach
will reset the state and allow things to run properly again.
Nathan
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I have a similar issue, however my DomU's seem to get their
connection back after a while automatically, most of the time it
happens when I physically login to the Dom0 :/
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http://lists.xensource.com/xen-users
Same for me, anyone knows if a bug report has been filled somewhere
for this ?
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