cpu.corespersocket don't work

[edikevich]

ISSUE TYPE

• Bug Report

CLOUDSTACK VERSION

4.16.0

CONFIGURATION

XCP-NG 8.2
Advanced Zone

OS / ENVIRONMENT

Oracle Linux 8.4 - Management server, MYSQL 8.0.26
XCP-NG 8.2 - hypervisor

SUMMARY

cpu.corespersocket don't work

STEPS TO REPRODUCE

Create VM. Stop VM. Go to Setting. Add cpu.corespersocket = 2 (VM have 2 cores or more)

EXPECTED RESULTS

In XOCE, XCP-NG Center or where ever we see 1 sockets with 2 core per socket

ACTUAL RESULTS

In XOCE, XCP-NG Center or where ever we see 2 sockets with 1 core per socket

[nvazquez]

Hi @edikevich can you try the following steps?

• Stop VM
• Go to Settings -> Edit the existing platform setting and add the following ;cores-per-socket:2
• Start VM

After that I could verify the param was set, with the following command:

# xe vm-param-list uuid=70c700c5-14f3-c6b5-91a4-0175a41a61b5 | grep cores
                              platform (MRW): timeoffset: 0; device-model: qemu-upstream-compat; vga: std; videoram: 8; apic: true; viridian: false; pae: true; cores-per-socket: 2; acpi: 1; hpet: true; secureboot: false; nx: true

[edikevich]

Hi @nvazquez
Yes, this is works!

[nvazquez]

Thanks for verifying @edikevich
@DaanHoogland @sureshanaparti do you think applying the setting ‘cpu.corespersocket’ should behave as the workaround in the ‘platform’ setting?

[DaanHoogland]

yes , @nvazquez . But would that mean that the value is set twice? once as separate setting and once as a part of platformsettings? I don't think that is desirable. How would the user control this?
intuitively, i'd expect platform to be read-only and always composed of separate parameters. Or alternatively to be synced back and forth to the individual parameters.

[sureshanaparti]

@nvazquez When the platform setting exists, cpu.corespersocket setting is ignored. Will this work if we add cores-per-socket from the cpu.corespersocket setting in the VM platform irrespective of platform setting.

cloudstack/plugins/hypervisors/xenserver/src/main/java/com/cloud/hypervisor/xenserver/resource/CitrixResourceBase.java

Lines 1917 to 1922 in 97d6cd5

	final String coresPerSocket = details.get(VmDetailConstants.CPU_CORE_PER_SOCKET);
	if (coresPerSocket != null) {
	final Map<String, String> platform = vm.getPlatform(conn);
	platform.put("cores-per-socket", coresPerSocket);
	vm.setPlatform(conn, platform);
	}

[sureshanaparti]

Fixed in #5892