Hi, Andrea When I tried $ dget https://deb.debian.org/debian/pool/main/libv/libvirt/libvirt_8.5.0-1.dsc
But failed, seems I did not have the public key? This is the message from my system: dget: using existing libvirt_8.5.0.orig.tar.xz dget: using existing libvirt_8.5.0.orig.tar.xz.asc dget: using existing libvirt_8.5.0-1.debian.tar.xz libvirt_8.5.0-1.dsc: dscverify: libvirt_8.5.0-1.dsc failed signature check: gpg: WARNING: no command supplied. Trying to guess what you mean ... gpg: Signature made Sun 17 Jul 2022 09:01:01 AM PDT gpg: using RSA key 3B8F2DF67895CA9C771232DFF79E1FC5428583AC gpg: issuer "e...@kiyuko.org" gpg: Can't check signature: No public key Validation FAILED!! Thank You Best Jin Huang On Thu, Aug 11, 2022 at 6:55 AM Andrea Bolognani <abolo...@redhat.com> wrote: > On Thu, Aug 11, 2022 at 02:21:18AM -0700, Jin Huang wrote: > > Hi, Andrea > > Thank you for your help, but I did not figure out how to deal with the > dsc > > and rebuilding package stuff yet. > > > > > > Also, I compiled and installed the libvirt-8.5.0 source code from > > https://libvirt.org/sources/. > > The build command I used is: > > meson build -Dsystem=true -Ddriver_interface=enabled > > -Ddriver_libvirtd=enabled -Ddriver_network=enabled -Ddriver_qemu=enabled > > -Ddriver_remote=enabled -Dnumactl=enabled -Dnumad=enabled > > -Dstorage_disk=enabled > > > > Now my question is how to start the libvird? My OS is Ubuntu20. > > According to https://libvirt.org/compiling.html, when I tried # service > > libvirtd stop (or systemctl stop libvirtd.service), under build/src > > directory > > The system reports error: Failed to start/stop libvirtd.service: Unit > > libvirtd.service not found. > > As I said in the previous message, I'd rebuild the Debian package > instead of building from source. That way, you should be able to > seamlessly replace the version of libvirt that you had installed from > Ubuntu 20.04's repositories with a newer one. > > The steps involved should be roughly > > $ sudo apt-get update > $ sudo apt-get install -y build-essential > $ sudo apt-get build-dep -y libvirt > > to install the necessary build dependencies, and then > > $ dget > https://deb.debian.org/debian/pool/main/libv/libvirt/libvirt_8.5.0-1.dsc > $ cd libvirt-8.5.0/ > $ dpkg-buildpackage --no-sign > > to actually build the package. Assuming there are no errors, you > should end up with a bunch of .deb files that you can install on the > system using apt-get. > > -- > Andrea Bolognani / Red Hat / Virtualization > >