The msg type CHANGE_CAPACITY is introduced to support
resize clustered raid in later patch, and it is sent
after all the nodes have the same sync_size, receiver
node just need to set new capacity once received this
msg.
Reviewed-by: NeilBrown <neilb@xxxxxxxx>
Signed-off-by: Guoqing Jiang <gqjiang@xxxxxxxx>
---
drivers/md/md-cluster.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 5cf0a9d29bf0..8b7d55bf5aa2 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -104,6 +104,7 @@ enum msg_type {
REMOVE,
RE_ADD,
BITMAP_NEEDS_SYNC,
+ CHANGE_CAPACITY,
};
struct cluster_msg {
@@ -579,6 +580,10 @@ static int process_recvd_msg(struct mddev *mddev, struct cluster_msg *msg)
case METADATA_UPDATED:
process_metadata_update(mddev, msg);
break;
+ case CHANGE_CAPACITY:
+ set_capacity(mddev->gendisk, mddev->array_sectors);
+ revalidate_disk(mddev->gendisk);
+ break;
case RESYNCING:
process_suspend_info(mddev, le32_to_cpu(msg->slot),
le64_to_cpu(msg->low),
--
2.6.2
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