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/*
* Copyright (C) 2001 Sistina Software (UK) Limited.
*
* This file is released under the LGPL.
*
*/
#ifndef _LVM_CACHE_H
#define _LVM_CACHE_H
#include "dev-cache.h"
#include "list.h"
#include "uuid.h"
#include "label.h"
#include "metadata.h"
#include <sys/types.h>
#define ORPHAN ""
#define CACHE_INVALID 0x00000001
/* LVM specific per-volume info */
/* Eventual replacement for struct physical_volume perhaps? */
struct cache_vginfo {
struct list list; /* Join these vginfos together */
struct list infos; /* List head for cache_infos */
char *vgname; /* "" == orphan */
char vgid[ID_LEN + 1];
const struct format_type *fmt;
};
struct cache_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 cache_vginfo *vginfo; /* NULL == unknown */
struct label *label;
const struct format_type *fmt;
struct device *dev;
uint64_t device_size; /* Bytes */
uint32_t status;
};
int cache_init(void);
void cache_destroy(void);
/* Set full_scan to 1 to reread every filtered device label */
int cache_label_scan(struct cmd_context *cmd, int full_scan);
/* Add/delete a device */
struct cache_info *cache_add(struct labeller *labeller, const char *pvid,
struct device *dev,
const char *vgname, const char *vgid);
void cache_del(struct cache_info *info);
/* Update things */
int cache_update_vgname(struct cache_info *info, const char *vgname);
int cache_update_vg(struct volume_group *vg);
/* Queries */
const struct format_type *fmt_from_vgname(const char *vgname);
struct cache_vginfo *vginfo_from_vgname(const char *vgname);
struct cache_vginfo *vginfo_from_vgid(const char *vgid);
struct cache_info *info_from_pvid(const char *pvid);
struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid);
/* 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 *cache_get_vgnames(struct cmd_context *cmd, int full_scan);
#endif
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