Re: [libvirt] Cannot find suitable emulator for x86_64

On Wed, Jun 13, 2018 at 05:59:37PM +0300, Mathieu Tarral wrote: > >> > > >> > What version of QEMU do you have installed ? Libvirt has recently > >> > become more aggressive at requiring modern QEMU versions, so its > >> > possible if your old libvirt was running against old QEMU, that > >> > might not be supported with new libvirt. > >> > >> I'm using QEMU 2.8 here. > >> That might explain why libvirt cannot find a version that is modern enough. > > > > 2.8 is plenty new enough, so that's not the issue. > > Alright, so let's focus on libvirt 4.4.0. > > When I start the daemon, i can see some warnings related to QEMU: > > warning : virQEMUCapsInit:942 : Failed to get host CPU cache info > warning : virQEMUCapsInit:949 : Failed to get host power management capabilities > > Could this be the reason, or the beginning of an explanation ? > How can I dig and find what is the root cause ? Best bet is to edit libvirtd.conf and set log_filters="1:qemu_capabilities" log_outputs="1:file:/var/log/libvirtd.log" and then rm -rf /var/cache/libvirt/qemu and restart libvirtd. The log file should tell you it is detecting qemu-system-x86_64 and probing it. If anything fails it should be covered in the logs.