mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 14:42:24 +00:00
51e453aecb
The in-memory bitmap is not ready when node joins cluster, so it doesn't make sense to make gather_all_resync_info() called so earlier, we need to call it after the node's bitmap is setup. Also, recv_thread could be wake up after node joins cluster, but it could cause problem if node receives RESYNCING message without persionality since mddev->pers->quiesce is called in process_suspend_info. This commit introduces a new cluster interface load_bitmaps to fix above problems, load_bitmaps is called in bitmap_load where bitmap and persionality are ready, and load_bitmaps does the following tasks: 1. call gather_all_resync_info to load all the node's bitmap info. 2. set MD_CLUSTER_ALREADY_IN_CLUSTER bit to recv_thread could be wake up, and wake up recv_thread if there is pending recv event. Then ack_bast only wakes up recv_thread after IN_CLUSTER bit is ready otherwise MD_CLUSTER_PENDING_RESYNC_EVENT is set. Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
33 lines
1.1 KiB
C
33 lines
1.1 KiB
C
|
|
|
|
#ifndef _MD_CLUSTER_H
|
|
#define _MD_CLUSTER_H
|
|
|
|
#include "md.h"
|
|
|
|
struct mddev;
|
|
struct md_rdev;
|
|
|
|
struct md_cluster_operations {
|
|
int (*join)(struct mddev *mddev, int nodes);
|
|
int (*leave)(struct mddev *mddev);
|
|
int (*slot_number)(struct mddev *mddev);
|
|
int (*resync_info_update)(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);
|
|
int (*resync_start)(struct mddev *mddev);
|
|
int (*resync_finish)(struct mddev *mddev);
|
|
int (*area_resyncing)(struct mddev *mddev, int direction, sector_t lo, sector_t hi);
|
|
int (*add_new_disk)(struct mddev *mddev, struct md_rdev *rdev);
|
|
void (*add_new_disk_cancel)(struct mddev *mddev);
|
|
int (*new_disk_ack)(struct mddev *mddev, bool ack);
|
|
int (*remove_disk)(struct mddev *mddev, struct md_rdev *rdev);
|
|
void (*load_bitmaps)(struct mddev *mddev, int total_slots);
|
|
int (*gather_bitmaps)(struct md_rdev *rdev);
|
|
int (*lock_all_bitmaps)(struct mddev *mddev);
|
|
void (*unlock_all_bitmaps)(struct mddev *mddev);
|
|
};
|
|
|
|
#endif /* _MD_CLUSTER_H */
|