Commit 5ebaf80b authored by Guoqing Jiang's avatar Guoqing Jiang Committed by Shaohua Li
Browse files

md-cluster: introduce resync_info_get interface for sanity check 



Since the resync region from suspend_info means one node
is reshaping this area, so the position of reshape_progress
should be included in the area.

Reviewed-by: default avatarNeilBrown <neilb@suse.com>
Signed-off-by: default avatarGuoqing Jiang <gqjiang@suse.com>
Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent 7564beda

drivers/md/md-cluster.c

+14 −0
Original line number Diff line number Diff line
@@ -1323,6 +1323,19 @@ static int resync_start(struct mddev *mddev) 
	return dlm_lock_sync_interruptible(cinfo->resync_lockres, DLM_LOCK_EX, mddev);

}



static void resync_info_get(struct mddev *mddev, sector_t *lo, sector_t *hi)

{

	struct md_cluster_info *cinfo = mddev->cluster_info;

	struct suspend_info *s;



	spin_lock_irq(&cinfo->suspend_lock);

	list_for_each_entry(s, &cinfo->suspend_list, list) {

		*lo = s->lo;

		*hi = s->hi;

	}

	spin_unlock_irq(&cinfo->suspend_lock);

}



static int resync_info_update(struct mddev *mddev, sector_t lo, sector_t hi)

{

	struct md_cluster_info *cinfo = mddev->cluster_info;
@@ -1562,6 +1575,7 @@ static struct md_cluster_operations cluster_ops = { 
	.resync_start = resync_start,

	.resync_finish = resync_finish,

	.resync_info_update = resync_info_update,

	.resync_info_get = resync_info_get,

	.metadata_update_start = metadata_update_start,

	.metadata_update_finish = metadata_update_finish,

	.metadata_update_cancel = metadata_update_cancel,

drivers/md/md-cluster.h

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ struct md_cluster_operations { 
	int (*leave)(struct mddev *mddev);

	int (*slot_number)(struct mddev *mddev);

	int (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);

	void (*resync_info_get)(struct mddev *mddev, sector_t *lo, sector_t *hi);

	int (*metadata_update_start)(struct mddev *mddev);

	int (*metadata_update_finish)(struct mddev *mddev);

	void (*metadata_update_cancel)(struct mddev *mddev);

drivers/md/raid10.c

+7 −1
Original line number Diff line number Diff line
@@ -4785,8 +4785,14 @@ static void end_reshape(struct r10conf *conf) 
static void raid10_update_reshape_pos(struct mddev *mddev)

{

	struct r10conf *conf = mddev->private;

	sector_t lo, hi;



	md_cluster_ops->resync_info_get(mddev, &lo, &hi);

	if (((mddev->reshape_position <= hi) && (mddev->reshape_position >= lo))

	    || mddev->reshape_position == MaxSector)

		conf->reshape_progress = mddev->reshape_position;

	else

		WARN_ON_ONCE(1);

}



static int handle_reshape_read_error(struct mddev *mddev,

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