vGPU instance fail to spawn with error "libvirt.libvirtError: internal error: Process exited prior to exec: libvirt: error : failed to access '/sys/bus/mdev/devices/<ID>/iommu_group"

Solution Verified - Updated -

Issue

  • vGPU instance fail to spawn with error "libvirt.libvirtError: internal error: Process exited prior to exec: libvirt: error : failed to access '/sys/bus/mdev/devices//iommu_group"
    • vGPU instance fail to spawn with below error in nova-compute.log
2020-09-07 09:05:55.107 7 ERROR nova.compute.manager [instance: c33b8c4e-514e-4c13-b1a8-4b79c9464551] libvirt.libvirtError: internal error: Process exited prior to exec: libvirt:  error : failed to access '/sys/bus/mdev/devices/b6ce4eb8-a8cb-423a-abfe-8ed8becdd4a9/iommu_group': No such file or directory

Environment

  • Red Hat OpenStack Platform 16.1

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