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fe43c624aa
Previously, client_greeting spliced pending requests back onto send_queue when reconnecting to a new server. Those requests carried state from the old server (sequence numbers, log tree references, lock modes) that was reclaimed at fence time, so resending against the new server was incorrect. Drain pending requests with -ECONNRESET at greeting time, mirroring the forcing_unmount drain in the shutdown worker. Thread the lock pointer through scoutfs_client_lock_request so the response callback can clear request_pending and wake waiters on error; otherwise a lock_key_range waiter would block forever because the new server's lock recovery only reports granted modes, not pending requests. Wrap the sync request senders in client_sync_request so userspace paths (statfs, mkdir, sysfs volopt, resize ioctl, walk-inodes ioctl) retry transparently across failover instead of surfacing a new -ECONNRESET that callers never saw before. Signed-off-by: Auke Kok <auke.kok@versity.com>
44 lines
2.1 KiB
C
44 lines
2.1 KiB
C
#ifndef _SCOUTFS_CLIENT_H_
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#define _SCOUTFS_CLIENT_H_
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int scoutfs_client_alloc_inodes(struct super_block *sb, u64 count,
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u64 *ino, u64 *nr);
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int scoutfs_client_get_log_trees(struct super_block *sb,
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struct scoutfs_log_trees *lt);
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int scoutfs_client_commit_log_trees(struct super_block *sb,
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struct scoutfs_log_trees *lt);
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int scoutfs_client_get_roots(struct super_block *sb,
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struct scoutfs_net_roots *roots);
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u64 *scoutfs_client_bulk_alloc(struct super_block *sb);
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int scoutfs_client_get_last_seq(struct super_block *sb, u64 *seq);
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int scoutfs_client_lock_request(struct super_block *sb,
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struct scoutfs_net_lock *nl,
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struct scoutfs_lock *lock);
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int scoutfs_client_lock_response(struct super_block *sb, u64 net_id,
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struct scoutfs_net_lock *nl);
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int scoutfs_client_lock_recover_response(struct super_block *sb, u64 net_id,
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struct scoutfs_net_lock_recover *nlr);
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int scoutfs_client_srch_get_compact(struct super_block *sb,
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struct scoutfs_srch_compact *sc);
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int scoutfs_client_srch_commit_compact(struct super_block *sb,
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struct scoutfs_srch_compact *res);
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int scoutfs_client_get_log_merge(struct super_block *sb,
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struct scoutfs_log_merge_request *req);
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int scoutfs_client_commit_log_merge(struct super_block *sb,
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struct scoutfs_log_merge_complete *comp);
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int scoutfs_client_send_omap_response(struct super_block *sb, u64 id,
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struct scoutfs_open_ino_map *map);
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int scoutfs_client_open_ino_map(struct super_block *sb, u64 group_nr,
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struct scoutfs_open_ino_map *map);
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int scoutfs_client_get_volopt(struct super_block *sb, struct scoutfs_volume_options *volopt);
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int scoutfs_client_set_volopt(struct super_block *sb, struct scoutfs_volume_options *volopt);
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int scoutfs_client_clear_volopt(struct super_block *sb, struct scoutfs_volume_options *volopt);
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int scoutfs_client_resize_devices(struct super_block *sb, struct scoutfs_net_resize_devices *nrd);
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int scoutfs_client_statfs(struct super_block *sb, struct scoutfs_net_statfs *nst);
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void scoutfs_client_net_shutdown(struct super_block *sb);
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int scoutfs_client_setup(struct super_block *sb);
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void scoutfs_client_destroy(struct super_block *sb);
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#endif
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