diff --git a/tools/lvconvert.c b/tools/lvconvert.c
index bc666c0c9..fcbbd2640 100644
--- a/tools/lvconvert.c
+++ b/tools/lvconvert.c
@@ -863,6 +863,17 @@ static int _lvconvert_mirrors_aux(struct cmd_context *cmd,
 	if (!lv_is_mirrored(lv)) {
 		/* FIXME Share code with lvcreate */
 
+		/*
+		 * Avoid bug 1711427 in which an exclusively active linear LV in a
+		 * clustered VG, when upconverted to a mirror, will mistakenly use
+		 * a userspace/cmirror log in _add_log() beause laopts.exclusive is
+		 * not set.
+		 */
+		if (vg_is_clustered(lv->vg) && lv_is_active(lv)) {
+			log_error("Cannot convert active LV to mirror in clustered VG.");
+			return 0;
+		}
+
 		/*
 		 * FIXME should we give not only pvh, but also all PVs
 		 * currently taken by the mirror? Would make more sense from