/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.  A copy is
 * included in the COPYING file that accompanied this code.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2013, Intel Corporation.
 */
/*
 * lustre/include/lustre_lfsck.h
 *
 * Lustre LFSCK exported functions.
 *
 * Author: Fan, Yong <fan.yong@intel.com>
 */

#ifndef _LUSTRE_LFSCK_H
# define _LUSTRE_LFSCK_H

#include <lustre/lustre_lfsck_user.h>
#include <lustre_dlm.h>
#include <lu_object.h>
#include <dt_object.h>

enum lfsck_status {
	/* The lfsck file is new created, for new MDT, upgrading from old disk,
	 * or re-creating the lfsck file manually. */
	LS_INIT			= 0,

	/* The first-step system scanning. */
	LS_SCANNING_PHASE1	= 1,

	/* The second-step system scanning. */
	LS_SCANNING_PHASE2	= 2,

	/* The LFSCK processing has completed for all objects. */
	LS_COMPLETED		= 3,

	/* The LFSCK exited automatically for failure, will not auto restart. */
	LS_FAILED		= 4,

	/* The LFSCK is stopped manually, will not auto restart. */
	LS_STOPPED		= 5,

	/* LFSCK is paused automatically when umount,
	 * will be restarted automatically when remount. */
	LS_PAUSED		= 6,

	/* System crashed during the LFSCK,
	 * will be restarted automatically after recovery. */
	LS_CRASHED		= 7,

	/* Some OST/MDT failed during the LFSCK, or not join the LFSCK. */
	LS_PARTIAL		= 8,

	LS_MAX
};

struct lfsck_start_param {
	struct lfsck_start	*lsp_start;
	struct ldlm_namespace	*lsp_namespace;
};

int lfsck_register(const struct lu_env *env, struct dt_device *key,
		   struct dt_device *next, bool master);
void lfsck_degister(const struct lu_env *env, struct dt_device *key);

int lfsck_start(const struct lu_env *env, struct dt_device *key,
		struct lfsck_start_param *lsp);
int lfsck_stop(const struct lu_env *env, struct dt_device *key,
	       bool pause);

int lfsck_get_speed(struct dt_device *key, void *buf, int len);
int lfsck_set_speed(struct dt_device *key, int val);

int lfsck_dump(struct dt_device *key, void *buf, int len, enum lfsck_type type);

#endif /* _LUSTRE_LFSCK_H */