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Description of problem: It needs a better error message when detecting a error for NUMA memory tuning. Version-Release number of selected component (if applicable): libvirt-1.1.1-13.el7.x86_64 qemu-kvm-rhev-1.5.3-20.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. define a guest with two preferred nodes, as we known it is wrong: # virsh edit kvm-rhel6.5-x86_64-qcow2-virtio ... <vcpu placement='static'>3</vcpu> <numatune> <memory mode='preferred' nodeset='2-3'/> </numatune> ... 2. start it, we cann't see the real error # virsh start kvm-rhel6.5-x86_64-qcow2-virtio error: Failed to start domain kvm-rhel6.5-x86_64-qcow2-virtio error: Child quit during startup handshake: Input/output error 3. check out qemu.log # tail /var/log/libvirt/qemu/kvm-rhel6.5-x86_64-qcow2-virtio.log libvirt: error : internal error: NUMA memory tuning in 'preferred' mode only supports single node Actual results: error message is hide in qemu.log Expected results: show error message when virsh return.
Patch proposed upstream: https://www.redhat.com/archives/libvir-list/2013-December/msg00210.html
Moving to POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-December/msg00230.html
This fix is verified on libvirt-1.1.1-15.el7: # virsh edit virt-tests-vm1 ... <vcpu placement='static'>3</vcpu> <numatune> <memory mode='preferred' nodeset='2-3'/> </numatune> ... # virsh start virt-tests-vm1 error: Failed to start domain virt-tests-vm1 error: internal error: Process exited prior to exec: libvirt: error : internal error: Nodeset is out of range, host cannot support NUMA node bigger than 3 So I change the status to VERIFIED.
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.