[libvirt-users] libvirt 4.1 and later - howto configure LXC with interface macvlan type='direct' ?

mxs kolo kolomaxes at gmail.com
Wed Dec 5 11:43:45 UTC 2018


 Hi all

After upgrade from Centos 7.5 to Centos 7.6, our test environment
geted  new version of libvirt 4.5.0
In which our old containers have broken config and can't start:
2018-12-05 10:38:32.634+0000: 18010: debug :
virLXCControllerGetNICIndexes:368 : Getting nic indexes
2018-12-05 10:38:32.634+0000: 18010: error :
virLXCControllerGetNICIndexes:400 : unsupported configuration:
Unsupported net type direct
Failure in libvirt_lxc startup: unsupported configuration: Unsupported
net type direct

We use next section for network interface:
 <interface type='direct'>
      <mac address='02:00:21:3b:eb:e1'/>
      <source dev='eno1.710' mode='bridge'/>
    </interface>

It's linux macvlan solutions and it's worked at least since libvirt
1.2.7 for us.
As I can see, in version 4.1.0 and later, some changes about DIRECT
connect was implemented.
VIR_DOMAIN_NET_TYPE_DIRECT is  still fully supported in src/lxc/lxc_driver.c
But in src/lxc/lxc_controller.c
--- libvirt-3.9.0/src/lxc/lxc_controller.c      2017-09-28
13:15:43.322712913 +0300
+++ libvirt-4.1.0/src/lxc/lxc_controller.c      2018-02-28
16:21:05.158799006 +0300
@@ -395,8 +395,14 @@
         case VIR_DOMAIN_NET_TYPE_INTERNAL:
         case VIR_DOMAIN_NET_TYPE_DIRECT:
         case VIR_DOMAIN_NET_TYPE_HOSTDEV:
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("Unsupported net type %s"),
+                           virDomainNetTypeToString(ctrl->def->nets[i]->type));
+            goto cleanup;
+        case VIR_DOMAIN_NET_TYPE_LAST:
         default:
-            break;
+            virReportEnumRangeError(virDomainNetType,
ctrl->def->nets[i]->type);
+            goto cleanup;
         }
     }

Since version 4.1.0 which config need be used to configure macvlan for
lxc cointainers ?




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