mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-28 11:55:55 +03:00
75b8ea195c
Building on the new DM function that parses DM cache status, we introduce the following LVM level functions to aquire information about cache devices: - lv_cache_block_info: retrieves information on the cache's block/chunk usage - lv_cache_policy_info: retrieves information on the cache's policy
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2012 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;
|
|
|
|
int read_only_lv(struct logical_volume *lv, struct lv_activate_opts *laopts);
|
|
|
|
/*
|
|
* 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_raid_status(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
struct dm_status_raid **status);
|
|
int dev_manager_raid_message(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
const char *msg);
|
|
int dev_manager_cache_status(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
struct dm_status_cache **status);
|
|
int dev_manager_thin_pool_status(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
struct dm_status_thin_pool **status,
|
|
int noflush);
|
|
int dev_manager_thin_pool_percent(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
int metadata, percent_t *percent);
|
|
int dev_manager_thin_percent(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
int mapped, percent_t *percent);
|
|
int dev_manager_thin_device_id(struct dev_manager *dm,
|
|
const struct logical_volume *lv,
|
|
uint32_t *device_id);
|
|
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
|