[Xen-users] Problems in DomU networking

[Lorenzo Milesi <lorenzo.milesi@xxxxxxxxxx>]

Hi.

I've recently reinstalled a XenServer system, based on Debian Squeeze.
I placed it originally few months ago, when 6.0 wasn't out yet, and has been 
working almost fine.

Last week I needed to reinstall it, and now I'm experiencing weird networking 
problems (and io performances) issues, expecially on Ubuntu Lucid domU machines.
I have no precise idea of what could be the cause. ifconfig doesn't show TX/RX 
errors, syslog both of dom(0|U) have no related messages.

The problem is that sometimes connections get dropped. I.e. I'm connected with 
ssh, works super-fast, but at some point it gets unresponsive and I get broken 
pipe or similar errors. 
I've also apache running here, and sometimes I cannot browse pages, I get the 
error like webserver is not running.

As said I had similar system running before, and cannot get why, with the very 
same xen config, I'm now getting those problems.
I was wondering if anyone else on Debian is experiencing something similar.
I must say that on the other host I had a slightly older kernel version:
now I'm running 2.6.32-30, while on the older one it had 2.6.32-27.

Otherwise, how can I investigate?
Thanks
-- 
Lorenzo Milesi - lorenzo.milesi@xxxxxxxxxx

YetOpen S.r.l. - http://www.yetopen.it/
Via Carlo Torri Tarelli 19 - 23900 Lecco - ITALY -
Tel 0341 220 205 - Fax 178 6070 222

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Grazie.


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