Hi, Can you check the agent.log on the host ? It might be possible that some SandyBridge features are not supported by the host cpu. If so, you need to disable the cpu feature by adding the feature with "-" as first letter in guest.cpu.features.
-Wei On Monday, 15 May 2023, Fariborz Navidan <mdvlinqu...@gmail.com> wrote: > Hi Wei, > > Thank you for your reply. I just checked available CPU models in libvirt > at /usr/share/libvirt/cpumap.xml with their features and found SandyBridge > to have avx feature. Then I edited the agent.properties file and changed > guest.cpu.mode to custom and guest.cpu.model to SandyBridge in order to > expose avx feature to guests. Then stoped one of guest VNs and tried to > start it. Unfortunately now the guest VM does not start with the general > error "Unable to create a deployment plan due to insufficient capacity. > So, I reversed the changes and VM started again. > > What can be the reason for this problem? > > Best Regards. > > On Mon, May 15, 2023 at 2:05 AM Wei ZHOU <ustcweiz...@gmail.com> wrote: > > > Hi, > > > > Please refer to > > > > https://docs.cloudstack.apache.org/en/4.18.0.0/ > installguide/hypervisor/kvm.html#configure-cpu-model-for- > kvm-guest-optional > > > > Kind regards, > > Wei > > > > On Sunday, 14 May 2023, Fariborz Navidan <mdvlinqu...@gmail.com> wrote: > > > > > Hello Community, > > > > > > We are runningACS 4.14 in one of our locations. We need to enable AVX > > > support on guests CPUs. The CPU model which is used for guests is QEMU > > > virtual CPU. I'm wondering if it possible to enable the AVX CPU flag > for > > > virtual CPU on which gh guests are running. Also, please share with me > if > > > it is possible to enable this flag virtually without needing the > physical > > > CPU to support it. By this, I mean software defined implementation of > the > > > AVX feature. > > > > > > Thanks in advance. > > > Regards. > > > > > >
