Hi Abhishek, There is a global setting "xen.vm.vcpu.max" which can be configured to the desired value. But I think hosts in the cluster should also have the required number of CPU sockets. The minimum of CPU sockets numbers of the hosts in the cluster will be assigned to the VPCUs-max. I remember assigning a greater value to vCPU-max than the CPU sockets number of the host results in VM start error. So in your case, it should be a maximum of 4.
Regards, Harikrishna ________________________________ From: Abishek <[email protected]> Sent: Monday, July 19, 2021 9:25 AM To: [email protected] <[email protected]> Subject: XCP-ng 8.2 cannot start vm more than 4 core Hello EveryOne, I am deployed XCP-ng 8.2 host with cloudstack 4.15.1. Every thing is sucessfully setup with 2 XCP-ng host. But I am facing a problem while deploying a vm greater than 4 cores. Every time I try to start a VM with more than 4 cores I get the error VCPUs-at-startup, 5, value greater than VCPUs-max. I will be very grateful if somebody can help me resolve the issue. We are trying to go into production with XCP-ng 8.2. Thank You.
