[one-users] Xen and number of cores in VM

[Ruben Diez]

The problem is now solved

It seems to be caused by a bug on the file: "src/vmm/XenDriver.cc", line 
134.

This line contents:
file << "vcpu = '" << vcpu << "'" << endl;

And it should be:
file << "vcpus = '" << vcpu << "'" << endl;

In this way, the launched VM has the specified numbers of cores...


Reference to Xen VM description parameters: 
http://tx.downloads.xensource.com/downloads/docs/user/#SECTION03200000000000000000



Ruben Diez escribió:
> Hi:
>
> we are attempt to up a VM with 4 cores in a physical host with 8 cores 
> (2 processors of 4 cores each).
>
> We are using OpenNebula 1.4 with xen (CENTOS 5.5 as OS)
>
> The OpenNebula template machine include the variables:
>
>
> CPU = 4
> VCPU = 4
> MEMORY = 8192
>
> But the file "deployment.0" generated only have these line relevant to 
> the CPU stuff:
>
> #O CPU_CREDITS = 1024
> memory = '8192'
> vcpu = '4'
>
> And the problem is that the generated VM have only a core....
>
> Where is the missing "cpu=4" parameter in the "deployment.0" file???
>
> How can we do in order to select the numbers of cores that a VM can 
> see???
>
> Regards.
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