File 0006-Create-check-the-node-nums-when-create-clustered-rai.patch of Package mdadm.7533
From 9844c8dbbd3176698374c078f79b4af0e837df26 Mon Sep 17 00:00:00 2001
From: Guoqing Jiang <gqjiang@suse.com>
Date: Wed, 4 May 2016 15:59:25 +0800
Subject: [PATCH] Create: check the node nums when create clustered raid
It doesn't make sense to create a clustered raid
with only 1 node.
Reported-by: Zhilong Liu <zlliu@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
---
Create.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Create.c b/Create.c
index 1e4a6ee..717086b 100644
--- a/Create.c
+++ b/Create.c
@@ -114,8 +114,13 @@ int Create(struct supertype *st, char *mddev,
unsigned long long newsize;
int major_num = BITMAP_MAJOR_HI;
- if (s->bitmap_file && strcmp(s->bitmap_file, "clustered") == 0)
+ if (s->bitmap_file && strcmp(s->bitmap_file, "clustered") == 0) {
major_num = BITMAP_MAJOR_CLUSTERED;
+ if (c->nodes <= 1) {
+ pr_err("At least 2 nodes are needed for cluster-md\n");
+ return 1;
+ }
+ }
memset(&info, 0, sizeof(info));
if (s->level == UnSet && st && st->ss->default_geometry)
--
2.6.2