Just to make sure, you are using PAExen kernel on 12GB RAM Linux? 4GB is
max for regular kernel without PAE extensions.
Mathew S. McCarrell wrote:
> Yeah, the Dom0 should have plenty of memory left since only 2-3 GB of
> memory is being used out of 12 GB installed. The out of memory messages
> were from the domU that I xm consoled into prior to shutting down that
> particular VM because it was out of memory.
>
> Matt
>
> --
> Mathew S. McCarrell
> Clarkson University '10
>
> mccarrms@gmail.com <mailto:mccarrms@gmail.com>
> mccarrms@clarkson.edu <mailto:mccarrms@clarkson.edu>
> <mailto:
timkom@gmail.com>> wrote:
>
> Hi Mathew,
>
> I would say no. Our system has freezed completely, it did not
> reboot. Our issue was caused by concurrent access to scheduler
> method that created a deadlock.
> I can see some out of memory messages, do you still have enough
> memory for Dom0?
>
> 2009/4/29 Mathew S. McCarrell <
mccarrms@gmail.com
>
> Hey,
>
> I'm wondering if it is possible that your problem is related to
> mine. Earlier today I had to restart one of our domUs on one of
> our systems. I used xm shutdown instead of xm destroy and then
> did xm list to determine if the domU had shutdown or not. Upon
> issuing xm list a second time, the entire server crashed and
> rebooted.
>
> I've checked the logs and have yet to find anything. I've
> attached a transcript of the commands as I executed them on the
> server. The system is running CentOS 5.3 x64 w/Xen (kernel
> 2.6.18-128.1.6.el5xen).
>
> Any thoughts?
>
> Thanks,
> Matt
>
> --
> Mathew S. McCarrell
> Clarkson University '10
>
> mccarrms@gmail.com <mailto:mccarrms@gmail.com>
> mccarrms@clarkson.edu <mailto:mccarrms@clarkson.edu>
>
>
> 2009/4/7 Maros Timko <timkom@gmail.com <mailto:timkom@gmail.com>>
>
> Hi all,
>
> thanks to all for valuable replies.
> It seems like we identified the issue. We assured that it is
> not HW related as it was already reproduced on different
> machines and platforms, with different BIOS versions.
> We are running a system performance/statistics collector
> that executes "xentop" command on Dom0 regularly. This is
> causing issues. If we execute:
> xentop -b -d 0.1 > /dev/null
> in multiple instances, it will freeze the system.
> It was reproduced on CentOS 5.3
> (kernel-xen-2.6.18-128.1.6.el5) system.
> There is created a bug for this issue:
>
http://bugs.centos.org/view.php?id=3454
>
> With regards,
>
> Tino
>
>
>
> Hi all,
>
> we are running CentOS 5.2 Xen virtualization system with
> the latest CentOS packages with couple of VMs on DELL
> PowerEdge. "Sometimes" the whole machine freezes without
> anything in log files, anything on the console.
> "Sometimes" really means we cannot define why or when.
> Sometimes the machine was idle with just one VM,
> sometimes quite busy with couple of VMs.
>
> Has anybody had the same experience? If yes, any hints
> on how to resolve it or how to trace the cause?
>
>
>
> Thanks.
>
>
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