[libvirt-users] LIBVIRT-4.6.0 can't work with QEMU 3.0.0

[Holger Schranz]

Hello,

if I try to use Llibvirt-4.6.0 together with qemu-3.0.0-rc4.
I run into an issue. Please see the following Memo.

Best regards

Holger

================================================================================

Procduce QEMU-3.0.0-RC4 and LIBVIRT-4.6.0:

QEMU-3-0-0-RC4:

   make clean
   ./configure --enable-libiscsi --enable-libusb --enable-bzip2 
--enable-libnfs --enable-spice --enable-user --enable-virtfs 
--enable-opengl --enable-sdl --enable-gtk --enable-virglrenderer 
--disable-seccomp --prefix=/usr;make -j$(grep -c ^processor /proc/cpuinfo)
    su
    make install

LIBVIRT-4.6.0

   make clean
   ./configure -q --with-lxc --with-storage-iscsi --with-storage-scsi 
--with-interface --with-storage-lvm --with-storage-fs --with-udev 
--with-vmware --with-storage-mpath --prefix=/usr;make -j$(grep -c 
^processor /proc/cpuinfo)
   su
   systemctl stop libvirtd.service
   cd libvirt-4.5.0
   make uninstall
   cd ..
   cd libvirt-4.6.0
   make install
   systemctl status libvirtd.service -l
   systemctl daemon-reload
   systemctl start libvirtd.service
   systemctl status libvirtd.service -l

? libvirtd.service - Virtualization daemon
    Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; 
vendor preset: disabled)
    Active: active (running) since Wed 2018-08-08 09:05:26 CEST; 3s ago
      Docs: man:libvirtd(8)
            https://libvirt.org
  Main PID: 137948 (libvirtd)
     Tasks: 19 (limit: 32768)
    CGroup: /system.slice/libvirtd.service
            ??  4725 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro 
--dhcp-script=/usr/lib/libvirt_leaseshelper
            ??  4726 /usr/sbin/dnsmasq 
--conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro 
--dhcp-script=/usr/lib/libvirt_leaseshelper
            ??137948 /usr/sbin/libvirtd

Aug 08 09:05:26 etcsvms5 systemd[1]: Starting Virtualization daemon...
Aug 08 09:05:26 etcsvms5 systemd[1]: Started Virtualization daemon.
Aug 08 09:05:26 etcsvms5 libvirtd[137948]: 2018-08-08 07:05:26.876+0000: 
137964: info : libvirt version: 4.6.0
Aug 08 09:05:26 etcsvms5 libvirtd[137948]: 2018-08-08 07:05:26.876+0000: 
137964: info : hostname: etcsvms5
Aug 08 09:05:26 etcsvms5 libvirtd[137948]: 2018-08-08 07:05:26.876+0000: 
137964: error : virNetworkObjAssignDefLocked:589 : operation failed: 
network 'default' already exists with uuid 
52abe250-4f23-40fe-875e-0808d57ce72d
Aug 08 09:05:27 etcsvms5 dnsmasq[4725]: read /etc/hosts - 8 addresses
Aug 08 09:05:27 etcsvms5 dnsmasq[4725]: read 
/var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses
Aug 08 09:05:27 etcsvms5 dnsmasq-dhcp[4725]: read 
/var/lib/libvirt/dnsmasq/default.hostsfile
Aug 08 09:05:27 etcsvms5 libvirtd[137948]: 2018-08-08 07:05:27.711+0000: 
137964: warning : virLXCDriverCapsInit:82 : Failed to get host CPU cache 
info
Aug 08 09:05:27 etcsvms5 libvirtd[137948]: 2018-08-08 07:05:27.719+0000: 
137964: warning : umlCapsInit:73 : Failed to get host CPU cache info
etcsvms5:/home/shl/Install/libvirt-4.6.0 #

---> test1: Start virt-manager

etcsvms5:/home/shl/Install/libvirt-4.6.0 # virsh version
Compiled against library: libvirt 4.6.0
Using library: libvirt 4.6.0
Using API: LXC 4.6.0
Running hypervisor: LXC 4.4.140

etcsvms5:/home/shl/Install/libvirt-4.6.0 #



Information on virt-manager window:
Unable to connect to libvirt qemu:///system.

no connection driver available for qemu:///system

Libvirt URI is: qemu:///system

Traceback (most recent call last):
   File "/usr/share/virt-manager/virtManager/connection.py", line 1036, 
in _do_open
     self._backend.open(self._do_creds_password)
   File "/usr/share/virt-manager/virtinst/connection.py", line 144, in open
     open_flags)
   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 104, in 
openAuth
     if ret is None:raise libvirtError('virConnectOpenAuth() failed')
libvirtError: no connection driver available for qemu:///system

---> TEst2: Call VM via virsh create

etcsvms5:/home/shl/Install/libvirt-4.6.0 # cd /kvm/CS8400/M4
etcsvms5:/kvm/CS8400/M4 # cd VLP0
etcsvms5:/kvm/CS8400/M4/VLP0 # virsh create M4-VLP0.xml
error: Failed to create domain from M4-VLP0.xml
error: invalid argument: could not find capabilities for arch=x86_64 
domaintype=kvm

etcsvms5:/kvm/CS8400/M4/VLP0 #

-----

switch back to LIBVIRT.4-5-0 and all runs o.k.




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