mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2006 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_CACHE_H
|
|
#define _LVM_CACHE_H
|
|
|
|
#include "dev-cache.h"
|
|
#include "uuid.h"
|
|
#include "label.h"
|
|
|
|
#define ORPHAN ""
|
|
|
|
#define CACHE_INVALID 0x00000001
|
|
#define CACHE_LOCKED 0x00000002
|
|
|
|
/* LVM specific per-volume info */
|
|
/* Eventual replacement for struct physical_volume perhaps? */
|
|
|
|
struct cmd_context;
|
|
struct format_type;
|
|
struct volume_group;
|
|
|
|
/* One per VG */
|
|
struct lvmcache_vginfo {
|
|
struct list list; /* Join these vginfos together */
|
|
struct list infos; /* List head for lvmcache_infos */
|
|
const struct format_type *fmt;
|
|
char *vgname; /* "" == orphan */
|
|
uint32_t status;
|
|
char vgid[ID_LEN + 1];
|
|
char _padding[7];
|
|
struct lvmcache_vginfo *next; /* Another VG with same name? */
|
|
char *creation_host;
|
|
};
|
|
|
|
/* One per device */
|
|
struct lvmcache_info {
|
|
struct list list; /* Join VG members together */
|
|
struct list mdas; /* list head for metadata areas */
|
|
struct list das; /* list head for data areas */
|
|
struct lvmcache_vginfo *vginfo; /* NULL == unknown */
|
|
struct label *label;
|
|
const struct format_type *fmt;
|
|
struct device *dev;
|
|
uint64_t device_size; /* Bytes */
|
|
uint32_t status;
|
|
};
|
|
|
|
int lvmcache_init(void);
|
|
void lvmcache_destroy(void);
|
|
|
|
/* Set full_scan to 1 to reread every filtered device label or
|
|
* 2 to rescan /dev for new devices */
|
|
int lvmcache_label_scan(struct cmd_context *cmd, int full_scan);
|
|
|
|
/* Add/delete a device */
|
|
struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
|
|
struct device *dev,
|
|
const char *vgname, const char *vgid,
|
|
uint32_t vgstatus);
|
|
void lvmcache_del(struct lvmcache_info *info);
|
|
|
|
/* Update things */
|
|
int lvmcache_update_vgname_and_id(struct lvmcache_info *info,
|
|
const char *vgname, const char *vgid,
|
|
uint32_t vgstatus, const char *hostname);
|
|
int lvmcache_update_vg(struct volume_group *vg);
|
|
|
|
void lvmcache_lock_vgname(const char *vgname, int read_only);
|
|
void lvmcache_unlock_vgname(const char *vgname);
|
|
|
|
/* Queries */
|
|
const struct format_type *fmt_from_vgname(const char *vgname, const char *vgid);
|
|
struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname,
|
|
const char *vgid);
|
|
struct lvmcache_vginfo *vginfo_from_vgid(const char *vgid);
|
|
struct lvmcache_info *info_from_pvid(const char *pvid);
|
|
const char *vgname_from_vgid(struct dm_pool *mem, const char *vgid);
|
|
struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid);
|
|
int vgs_locked(void);
|
|
int vgname_is_locked(const char *vgname);
|
|
|
|
/* Returns list of struct str_lists containing pool-allocated copy of vgnames */
|
|
/* Set full_scan to 1 to reread every filtered device label */
|
|
struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan);
|
|
|
|
/* Returns list of struct str_lists containing pool-allocated copy of vgids */
|
|
/* Set full_scan to 1 to reread every filtered device label */
|
|
struct list *lvmcache_get_vgids(struct cmd_context *cmd, int full_scan);
|
|
|
|
/* Returns list of struct str_lists containing pool-allocated copy of pvids */
|
|
struct list *lvmcache_get_pvids(struct cmd_context *cmd, const char *vgname,
|
|
const char *vgid);
|
|
|
|
#endif
|