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https://issues.apache.org/jira/browse/CLOUDSTACK-904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738430#comment-13738430
]
Tomasz Zieba commented on CLOUDSTACK-904:
-----------------------------------------
The same situation with CitrixXen / XCP but we made a patch:
Environment
- CloudStack 3.0.2
- XCP 1.1
in file: core/src/com/cloud/hypervisor/xen/resource/CitrixRecourceBase.java
public int getOptimalNumberOfCores(int vmCPUsCount) {
if (vmCPUsCount % 4 == 0) {return 4;}
else if (vmCPUsCount % 2 == 0) {return 2;}
else return 1;
}
protected VM createVmFromTemplate(Connection conn, VirtualMachineTO vmSpec,
Host host) throws XenAPIException, XmlRpcException {
String guestOsTypeName = getGuestOsType(vmSpec.getOs(),
vmSpec.getBootloader() == BootloaderType.CD);
if ( guestOsTypeName == null ) {
..............
if (vcpuParams.size() > 0) {
vm.setVCPUsParams(conn, vcpuParams);
}
// change cores per socket according to:
http://support.citrix.com/article/CTX126524
if ((long)vmSpec.getCpus() > 1) {
int optimalCoresCount =
getOptimalNumberOfCores(vmSpec.getCpus());
vm.addToPlatform(conn, "cores-per-socket",
Integer.toString(optimalCoresCount));
}
vm.setActionsAfterCrash(conn, Types.OnCrashBehaviour.DESTROY);
vm.setActionsAfterShutdown(conn, Types.OnNormalExit.DESTROY);
..............
There is an issue/problem because Microsoft Windows Server Standard is licensed
to maximum 4 cpus sockets.
> CloudStack export the CPU as a socket not core
> ----------------------------------------------
>
> Key: CLOUDSTACK-904
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-904
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: KVM
> Affects Versions: pre-4.0.0, 4.0.0
> Reporter: Ahmad Saif
>
> I've a VM that's running (Windows 2008 Standard R2 64bit) which was working
> on a 4 cores offer. when I upgraded the service offer to 8 cores and checked
> the VM I noticed that it still have only 4 cores !!
> I dig a little bit on the windows machine itself, and found that it see the
> CPUs as sockets not cores and this version of windows support only up to 4
> cores.
> when I checked the vm XML file on the host I saw that the CPU is exported as
> following :
> <vcpu>8</vcpu>
> and it should be exported as following:
> <vcpu>1</vcpu> <cpu>
> <topology sockets='1' cores='8' threads='1'/>
> </cpu>
> otherwise in such systems where you are limited with the sockets number you
> cannot have the required service offer.
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