[Xen-users] No no-local network connectivity

[Glen Eustace <geustace@xxxxxxxxxxxxxx>]

After having had quite a long period of stability, we had another 
incident yesterday where all of the DomUs on one of our servers lost the 
ability to connect to the outside world.  They could ping each other and 
Dom0 which implies, to me, that the bridging was still working but for 
some reason the bridged NICs were cut off from the outside.  External 
connectivity to Dom0 was still fine.
The Dom0 is running 2.6.21-7.fc7xen, with Xen version 3.1.2.2
All of the DomUs are running 2.6.21.7-3.fc8xen

Being a production environment, unfortunately, I could not do a lot of 
diagnosis.  Rebooting the server brought everything back online.
If anyone has any ideas as to what might cause this I would love to 
know.  Since installing Xen on this server, this has happened about 4 
times in the last 18mths.  The first time it happened, it seemed, that 
it may have coincided with higher (not heavy) than normal network 
traffic on one of the DomUs.
--
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Glen and Rosanne Eustace
GodZone Internet Services, a division of AGRE Enterprises Ltd.
P.O. Box 8020, Palmerston North, New Zealand 4446.
Ph: +64 6 357 8168, Fax +64 6 357 8165, Mob: +64 21 424 015
http://www.godzone.net.nz

"A Ministry specialising in providing low-cost Internet Services
to NZ Christian Churches, Ministries and Organisations."

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