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/*
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser 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
*/
#ifndef _LVM_DEV_MANAGER_H
#define _LVM_DEV_MANAGER_H
#include "metadata-exported.h"
struct logical_volume;
struct lv_activate_opts;
struct volume_group;
struct cmd_context;
struct dev_manager;
struct dm_info;
struct device;
/*
* Constructor and destructor.
*/
struct dev_manager *dev_manager_create(struct cmd_context *cmd,
const char *vg_name,
unsigned track_pvmove_deps);
void dev_manager_destroy(struct dev_manager *dm);
void dev_manager_release(void);
void dev_manager_exit(void);
/*
* The device handler is responsible for creating all the layered
* dm devices, and ensuring that all constraints are maintained
* (eg, an origin is created before its snapshot, but is not
* unsuspended until the snapshot is also created.)
*/
int dev_manager_info(struct dm_pool *mem, const struct logical_volume *lv,
const char *layer,
int with_open_count, int with_read_ahead,
struct dm_info *info, uint32_t *read_ahead);
int dev_manager_snapshot_percent(struct dev_manager *dm,
const struct logical_volume *lv,
percent_t *percent);
int dev_manager_mirror_percent(struct dev_manager *dm,
const struct logical_volume *lv, int wait,
percent_t *percent, uint32_t *event_nr);
int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv,
struct lv_activate_opts *laopts, int lockfs, int flush_required);
int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv,
struct lv_activate_opts *laopts);
int dev_manager_preload(struct dev_manager *dm, struct logical_volume *lv,
struct lv_activate_opts *laopts, int *flush_required);
int dev_manager_deactivate(struct dev_manager *dm, struct logical_volume *lv);
int dev_manager_transient(struct dev_manager *dm, struct logical_volume *lv) __attribute__((nonnull(1, 2)));
int dev_manager_mknodes(const struct logical_volume *lv);
/*
* Put the desired changes into effect.
*/
int dev_manager_execute(struct dev_manager *dm);
int dev_manager_device_uses_vg(struct device *dev,
struct volume_group *vg);
#endif
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