Re: [Xen-devel] Xen3.1 network freeze with IPMI

[Jan Michael <Jan.Michael@xxxxxxx>]

Hi Marek,

we are using IPMI with Scientific Linux CERN 4. It is built on the  
same code base as RHES4.
On one of the test machines has a supermicro chip and runs Xen 3.0.4.

As far as I can say IPMI works fine when using the local interface  
from within the machine. I was not able to get IPMI working over the  
LAN interface. But I'm working on that.
A former colleague who investigated and set up IPMI on our machines  
also reports some problems with XEN in conjunction with IPMI:
> For example: now I've a e4 1U machine, with debian etch (2.6.18).  
Sometimes
> Xen shuts down the NIC1 and I cannot reach the BMC in any way.
> I don't know why.

Did you find already find the reason causing your problems. Did you  
try using XEN 3.0.4?
Cheers,

        Jan

On 13.06.2007, at 15:12, marek cervenka wrote:
> hi,
>
> i am using supermicro with remote management IPMI (http:// 
> www.supermicro.com/manuals/other/SUPER_IPMI_2.0.ppt)
> IPMI card has own MAC adress and IP address (but ethernet cable is  
> shared)
> i am using xen 3.1 from www.xensource.com (on centos5.0)
>
> if IPMI card is "freezed*" (cannot connect to IPMI) then xen3.1  
> kernel(NETWORK) works fine
> if i do "mc reset cold" from host system then NETWORK freeze (but  
> IPMI works)
> i can connect with IPMI to the system. dmesg,messages,ifconfig all  
> looks ok
> but network do not work. /etc/init.d/network restart does not help,  
> i must restart whole server
> ping from this machine ends with
> PING <other ip>  56(84) bytes of data.
> > From <server ip> icmp_seq=0 Destination Host Unreachable
> this is strange
>
> server without IPMI works fine. server with IPMI without XEN kernel  
> works fine. (IPMI does not like XEN and backward)
> do you have idea what is the problem?
>
> * IPMI card sometimes freeze and is unreachable. it must be  
> restarted :(
> ---------------------------------------
> Marek Cervenka
> =======================================
>
>
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> http://lists.xensource.com/xen-devel

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