Re: [PATCH] spec: If installing default network, restart libvirtd

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On 04/25/2016 05:13 PM, Cole Robinson wrote:
If libvirt-daemon-config-network is installed while libvirtd is already
running, the daemon doesn't notice the network. Users then have to
manually restart libvirtd (or reboot) to pick up the network.

Instead let's trigger a daemon restart when the package is first installed.
Then the default network is available immediately if libvirtd was already
running.

https://bugzilla.redhat.com/show_bug.cgi?id=867546
---
Plain restart is kind of suboptimal since it will drop all open
libvirt connections. Ideally we would use reload which is meant
for this case, but it's kinda crashy with current git:

http://www.redhat.com/archives/libvir-list/2016-April/msg01624.html

And in fact daemon restart is what the spec triggers on libvirt-daemon
upgrade anyways, so this isn't anything new WRT packaging.

This logic makes sense, but does it do the right thing on a fresh install? (i.e. would it possibly try to restart libvirtd.service before it could be started?)

If you've tried a fresh install of all packages simultaneously and this restart doesn't cause any sort of error message, then ACK.


  libvirt.spec.in | 8 ++++++++
  1 file changed, 8 insertions(+)

diff --git a/libvirt.spec.in b/libvirt.spec.in
index 35212da..1a04c88 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -1849,6 +1849,14 @@ if test $1 -eq 1 && test ! -f %{_sysconfdir}/libvirt/qemu/networks/default.xml ;
           < %{_datadir}/libvirt/networks/default.xml \
           > %{_sysconfdir}/libvirt/qemu/networks/default.xml
      ln -s ../default.xml %{_sysconfdir}/libvirt/qemu/networks/autostart/default.xml
+
+    # Make sure libvirt picks up the new network defininiton
+      %if %{with_systemd}
+    /bin/systemctl reload libvirtd.service >/dev/null 2>&1 ||:
+      %else
+    /sbin/service libvirtd reload > /dev/null 2>&1 || :
+      %endif
+
  fi
      %endif

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