diff -up sblim-gather-2.2.9/plugin/metricVirt.h.orig sblim-gather-2.2.9/plugin/metricVirt.h
--- sblim-gather-2.2.9/plugin/metricVirt.h.orig	2014-10-09 23:29:10.000000000 +0200
+++ sblim-gather-2.2.9/plugin/metricVirt.h	2020-02-12 13:52:56.161653863 +0100
@@ -48,7 +48,9 @@ struct node_statistics_type {
 	size_t total_domains;
 	unsigned long long total_memory;
 	unsigned long long free_memory;
-} node_statistics;
+};
+
+extern struct node_statistics_type node_statistics;
 
 struct domain_statistics_type {
 	unsigned int domain_id[MAX_DOMAINS];
@@ -61,7 +63,9 @@ struct domain_statistics_type {
 	unsigned long long cpu_used[MAX_DOMAINS];
 	unsigned long long cpu_ready[MAX_DOMAINS];
 	struct vdisk_type * blkio[MAX_DOMAINS];
-} domain_statistics;
+};
+
+extern struct domain_statistics_type domain_statistics;
 
 int testHypervisor(int type);