libvirt: use /dev/random on libvirt versions <= 2002001

It appears that on older libvirt versions(such as 1.3 on Ubuntu16.04), /dev/urandom backend model is not supported. I could not trace in libvirt's changelog when that was changed, and I hope this is not a different issue specific to Ubuntu16.04. However, we know for sure that /dev/urandom works on libvirt version greater than 2002001. So here we add a simple condition on that. Signed-off-by: Nadav Goldin <[email protected]>
lago-project · Jun 22, 2017 · daab62b · daab62b
1 parent 492b381
commit daab62b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lago/providers/libvirt/templates/dom_template-base.xml.j2 b/lago/providers/libvirt/templates/dom_template-base.xml.j2
@@ -27,7 +27,7 @@
         <target type='virtio' name='org.qemu.guest_agent.0'/>
       </channel>
       <rng model='virtio'>
-        <backend model='random'>/dev/urandom</backend>
+        <backend model='random'>{{ '/dev/urandom' if libvirt_ver >= 2002001 else '/dev/random' }}</backend>
         <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
       </rng>
       <console type='pty'>