Hi, I am new  to Libvirt and Qemu.I have installed Libvirt 7.1.0 and qemu-kvm 4.2.0. I configured and built libvirt based on instructions from https://libvirt.org/compiling.html <https://libvirt.org/compiling.html>;. But when i tried to create a VM using virsh it shows the following error: # virsh create /home/abc.xml error: Failed to create domain from /home/abc.xml error: invalid argument: could not find capabilities for arch=x86_64 domaintype=kvm When i check the hypervisor capabilities ,it doest show qemu in guest domain type. # virsh capabilities .................................... .....................................  </host>   <guest>     <os_type>exe</os_type>     <arch name='x86_64'>       <wordsize>64</wordsize>       <emulator>/usr/local/libexec/libvirt_lxc</emulator>       <domain type='lxc'/>     </arch>   </guest>   <guest>     <os_type>exe</os_type>     <arch name='i686'>       <wordsize>32</wordsize>       <emulator>/usr/local/libexec/libvirt_lxc</emulator>

On Mon, Mar 22, 2021 at 01:57:24PM +0100, Michal Privoznik wrote: > On 3/22/21 5:17 AM, shafnamol N wrote: > > Hi, > > I am new to Libvirt and Qemu.I have installed Libvirt 7.1.0 and > > qemu-kvm 4.2.0. > > I configured and built libvirt based on instructions from > > https://libvirt.org/compiling.html <https://libvirt.org/compiling.html >. > > But when i tried to create a VM using virsh it shows the following error: > > # virsh create /home/abc.xml > > error: Failed to create domain from /home/abc.xml > > error: invalid argument: could not find capabilities for arch=x86_64 > > domaintype=kvm > > > > When i check the hypervisor capabilities ,it doest show qemu in guest > > domain type. > > # virsh capabilities > > .................................... > > ..................................... > > </host> > > > > <guest> > > <os_type>exe</os_type> > > <arch name='x86_64'> > > <wordsize>64</wordsize> > > <emulator>/usr/local/libexec/libvirt_lxc</emulator> > > <domain type='lxc'/> > > </arch> > > </guest> > > > > <guest> > > <os_type>exe</os_type> > > <arch name='i686'> > > <wordsize>32</wordsize> > > <emulator>/usr/local/libexec/libvirt_lxc</emulator> > > This smells suspicious. Perhaps you did not pass proper prefix (meson > -Dsystem=true)? > > Anyway, libvirt tries to find qemu-system-$arch in $PATH and falls back to > /usr/libexec/qemu-kvm if no binary was found. So I suspect that maybe the > directory you installed QEMU into is not in $PATH? This capabiliities output is showing an lxc:///system driver connection too, not QEMU. So I suspect libvirt was perhaps built without QEMU support ? Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|