From 25d7de930baa8a25b232a6276e123ca692c1e710 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jan=20Kundr=C3=A1t?= <jan.kundrat@cesnet.cz>
Date: Thu, 20 Feb 2014 02:13:20 +0100
Subject: [PATCH] lvm: Do not segfault when there are no VGs

---
 src/lvm.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lvm.c b/src/lvm.c
index 6ef3a7b2..12c621d0 100644
--- a/src/lvm.c
+++ b/src/lvm.c
@@ -53,6 +53,11 @@ static int vg_read(vg_t vg, char const *vg_name)
     lvm_submit (vg_name, "free", lvm_vg_get_free_size(vg));
 
     lvs = lvm_vg_list_lvs(vg);
+    if (!lvs) {
+        /* no VGs are defined, which is not an error per se */
+        return (0);
+    }
+
     dm_list_iterate_items(lvl, lvs) {
          lvm_submit(vg_name, lvm_lv_get_name(lvl->lv), lvm_lv_get_size(lvl->lv));
     }
-- 
2.11.0