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From 9d67f6496c71efbc68b33aea663dbcc1597a0828 Mon Sep 17 00:00:00 2001
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From: Zhilong Liu <zlliu@suse.com>
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Date: Wed, 1 Mar 2017 18:42:33 +0800
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Subject: [RHEL7.5 PATCH 005/169] mdadm:check the nodes when operate
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clustered array
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It doesn't make sense to write_bitmap with less than 2 nodes,
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in order to avoid 'write_bitmap' received invalid nodes number,
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it would be better to do checking nodes in getopt operations.
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Signed-off-by: Zhilong Liu <zlliu@suse.com>
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Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
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---
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mdadm.c | 4 ++--
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super1.c | 9 +--------
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2 files changed, 3 insertions(+), 10 deletions(-)
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diff --git a/mdadm.c b/mdadm.c
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index 16fd49a..b5ac061 100644
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--- a/mdadm.c
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+++ b/mdadm.c
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@@ -603,8 +603,8 @@ int main(int argc, char *argv[])
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case O(GROW, Nodes):
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case O(CREATE, Nodes):
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c.nodes = parse_num(optarg);
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- if (c.nodes <= 0) {
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- pr_err("invalid number for the number of cluster nodes: %s\n",
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+ if (c.nodes < 2) {
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+ pr_err("clustered array needs two nodes at least: %s\n",
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optarg);
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exit(2);
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}
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diff --git a/super1.c b/super1.c
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index 87a74cb..882cd61 100644
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--- a/super1.c
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+++ b/super1.c
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@@ -2380,14 +2380,7 @@ static int write_bitmap1(struct supertype *st, int fd, enum bitmap_update update
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}
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if (bms->version == BITMAP_MAJOR_CLUSTERED) {
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- if (st->nodes == 1) {
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- /* the parameter for nodes is not valid */
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- pr_err("Warning: cluster-md at least needs two nodes\n");
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- return -EINVAL;
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- } else if (st->nodes == 0)
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- /* --nodes is not specified */
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- break;
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- else if (__cpu_to_le32(st->nodes) < bms->nodes) {
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+ if (__cpu_to_le32(st->nodes) < bms->nodes) {
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/* Since the nodes num is not increased, no need to check the space
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* is enough or not, just update bms->nodes */
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bms->nodes = __cpu_to_le32(st->nodes);
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--
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2.7.4
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