Re: [libvirt] Cannot find suitable emulator for x86_64

2018-06-13 18:07 GMT+03:00 Daniel P. Berrangé <berrange(a)redhat.com&gt;: > 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. Thanks, i have more information now: debug : virQEMUCapsCacheLookup:4561 : Returning caps (nil) for /usr/bin/qemu-system-x86_64 debug : virQEMUCapsCacheLookup:4561 : Returning caps (nil) for /usr/bin/kvm Does this help you ?