From 7da3d203330305695f38302c076ee0d32c005ede Mon Sep 17 00:00:00 2001 From: Guoqing Jiang Date: Wed, 1 Mar 2017 16:42:38 +0800 Subject: [PATCH] md-cluster: add CHANGE_CAPACITY message type 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 Signed-off-by: Guoqing Jiang Signed-off-by: Shaohua Li --- 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 5cf0a9d..8b7d55b 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), -- 2.7.4