mdadm:check the nodes when operate clustered array

[thirdparty/mdadm.git] / mdadm.c

diff --git a/mdadm.c b/mdadm.c
index 16fd49a714608becadd248b7f20c173183c35c1b..b5ac06113747657723bf71afc081762963e872bb 100644 (file)
--- a/mdadm.c
+++ b/mdadm.c
@@ -603,8 +603,8 @@ int main(int argc, char *argv[])
                case O(GROW, Nodes):
                case O(CREATE, Nodes):
                        c.nodes = parse_num(optarg);
-                       if (c.nodes <= 0) {
-                               pr_err("invalid number for the number of cluster nodes: %s\n",
+                       if (c.nodes < 2) {
+                               pr_err("clustered array needs two nodes at least: %s\n",
                                        optarg);
                                exit(2);
                        }