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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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
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#ifndef _MD_CLUSTER_H
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#define _MD_CLUSTER_H
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#include "md.h"
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struct mddev;
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struct md_rdev;
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struct md_cluster_operations {
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int (*join)(struct mddev *mddev, int nodes);
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int (*leave)(struct mddev *mddev);
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int (*slot_number)(struct mddev *mddev);
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int (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);
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int (*metadata_update_start)(struct mddev *mddev);
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int (*metadata_update_finish)(struct mddev *mddev);
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void (*metadata_update_cancel)(struct mddev *mddev);
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int (*resync_start)(struct mddev *mddev);
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int (*resync_finish)(struct mddev *mddev);
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int (*area_resyncing)(struct mddev *mddev, int direction, sector_t lo, sector_t hi);
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int (*add_new_disk)(struct mddev *mddev, struct md_rdev *rdev);
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void (*add_new_disk_cancel)(struct mddev *mddev);
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int (*new_disk_ack)(struct mddev *mddev, bool ack);
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int (*remove_disk)(struct mddev *mddev, struct md_rdev *rdev);
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void (*load_bitmaps)(struct mddev *mddev, int total_slots);
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int (*gather_bitmaps)(struct md_rdev *rdev);
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int (*lock_all_bitmaps)(struct mddev *mddev);
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void (*unlock_all_bitmaps)(struct mddev *mddev);
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};
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#endif /* _MD_CLUSTER_H */
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