mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
251 lines
7.7 KiB
C
251 lines
7.7 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 DISK_REP_FORMAT1_H
|
|
#define DISK_REP_FORMAT1_H
|
|
|
|
#include "metadata.h"
|
|
#include "toolcontext.h"
|
|
|
|
#define MAX_PV 256
|
|
#define MAX_LV 256
|
|
#define MAX_VG 99
|
|
|
|
#define LVM_BLK_MAJOR 58
|
|
|
|
#define MAX_PV_SIZE ((uint32_t) -1) /* 2TB in sectors - 1 */
|
|
#define PE_SIZE_PV_SIZE_REL 5 /* PV size must be at least 5 times PE size */
|
|
#define MAX_LE_TOTAL 65534 /* 2^16 - 2 */
|
|
#define MAX_PE_TOTAL ((uint32_t) -2)
|
|
|
|
#define UNMAPPED_EXTENT 0
|
|
|
|
/* volume group */
|
|
#define VG_ACTIVE 0x01 /* vg_status */
|
|
#define VG_EXPORTED 0x02 /* " */
|
|
#define VG_EXTENDABLE 0x04 /* " */
|
|
|
|
#define VG_READ 0x01 /* vg_access */
|
|
#define VG_WRITE 0x02 /* " */
|
|
#define VG_CLUSTERED 0x04 /* " */
|
|
#define VG_SHARED 0x08 /* " */
|
|
|
|
/* logical volume */
|
|
#define LV_ACTIVE 0x01 /* lv_status */
|
|
#define LV_SPINDOWN 0x02 /* " */
|
|
#define LV_PERSISTENT_MINOR 0x04 /* " */
|
|
|
|
#define LV_READ 0x01 /* lv_access */
|
|
#define LV_WRITE 0x02 /* " */
|
|
#define LV_SNAPSHOT 0x04 /* " */
|
|
#define LV_SNAPSHOT_ORG 0x08 /* " */
|
|
|
|
#define LV_BADBLOCK_ON 0x01 /* lv_badblock */
|
|
|
|
#define LV_STRICT 0x01 /* lv_allocation */
|
|
#define LV_CONTIGUOUS 0x02 /* " */
|
|
|
|
/* physical volume */
|
|
#define PV_ACTIVE 0x01 /* pv_status */
|
|
#define PV_ALLOCATABLE 0x02 /* pv_allocatable */
|
|
|
|
#define EXPORTED_TAG "PV_EXP" /* Identifier for exported PV */
|
|
#define IMPORTED_TAG "PV_IMP" /* Identifier for imported PV */
|
|
|
|
struct data_area {
|
|
uint32_t base;
|
|
uint32_t size;
|
|
} __attribute__ ((packed));
|
|
|
|
struct pv_disk {
|
|
int8_t id[2];
|
|
uint16_t version; /* lvm version */
|
|
struct data_area pv_on_disk;
|
|
struct data_area vg_on_disk;
|
|
struct data_area pv_uuidlist_on_disk;
|
|
struct data_area lv_on_disk;
|
|
struct data_area pe_on_disk;
|
|
int8_t pv_uuid[NAME_LEN];
|
|
int8_t vg_name[NAME_LEN];
|
|
int8_t system_id[NAME_LEN]; /* for vgexport/vgimport */
|
|
uint32_t pv_major;
|
|
uint32_t pv_number;
|
|
uint32_t pv_status;
|
|
uint32_t pv_allocatable;
|
|
uint32_t pv_size;
|
|
uint32_t lv_cur;
|
|
uint32_t pe_size;
|
|
uint32_t pe_total;
|
|
uint32_t pe_allocated;
|
|
|
|
/* only present on version == 2 pv's */
|
|
uint32_t pe_start;
|
|
} __attribute__ ((packed));
|
|
|
|
struct lv_disk {
|
|
int8_t lv_name[NAME_LEN];
|
|
int8_t vg_name[NAME_LEN];
|
|
uint32_t lv_access;
|
|
uint32_t lv_status;
|
|
uint32_t lv_open;
|
|
uint32_t lv_dev;
|
|
uint32_t lv_number;
|
|
uint32_t lv_mirror_copies; /* for future use */
|
|
uint32_t lv_recovery; /* " */
|
|
uint32_t lv_schedule; /* " */
|
|
uint32_t lv_size;
|
|
uint32_t lv_snapshot_minor; /* minor number of original */
|
|
uint16_t lv_chunk_size; /* chunk size of snapshot */
|
|
uint16_t dummy;
|
|
uint32_t lv_allocated_le;
|
|
uint32_t lv_stripes;
|
|
uint32_t lv_stripesize;
|
|
uint32_t lv_badblock; /* for future use */
|
|
uint32_t lv_allocation;
|
|
uint32_t lv_io_timeout; /* for future use */
|
|
uint32_t lv_read_ahead;
|
|
} __attribute__ ((packed));
|
|
|
|
struct vg_disk {
|
|
int8_t vg_uuid[ID_LEN]; /* volume group UUID */
|
|
int8_t vg_name_dummy[NAME_LEN - ID_LEN]; /* rest of v1 VG name */
|
|
uint32_t vg_number; /* volume group number */
|
|
uint32_t vg_access; /* read/write */
|
|
uint32_t vg_status; /* active or not */
|
|
uint32_t lv_max; /* maximum logical volumes */
|
|
uint32_t lv_cur; /* current logical volumes */
|
|
uint32_t lv_open; /* open logical volumes */
|
|
uint32_t pv_max; /* maximum physical volumes */
|
|
uint32_t pv_cur; /* current physical volumes FU */
|
|
uint32_t pv_act; /* active physical volumes */
|
|
uint32_t dummy;
|
|
uint32_t vgda; /* volume group descriptor arrays FU */
|
|
uint32_t pe_size; /* physical extent size in sectors */
|
|
uint32_t pe_total; /* total of physical extents */
|
|
uint32_t pe_allocated; /* allocated physical extents */
|
|
uint32_t pvg_total; /* physical volume groups FU */
|
|
} __attribute__ ((packed));
|
|
|
|
struct pe_disk {
|
|
uint16_t lv_num;
|
|
uint16_t le_num;
|
|
} __attribute__ ((packed));
|
|
|
|
struct uuid_list {
|
|
struct dm_list list;
|
|
char uuid[NAME_LEN] __attribute__((aligned(8)));
|
|
};
|
|
|
|
struct lvd_list {
|
|
struct dm_list list;
|
|
struct lv_disk lvd;
|
|
};
|
|
|
|
struct disk_list {
|
|
struct dm_list list;
|
|
struct dm_pool *mem;
|
|
struct device *dev;
|
|
|
|
struct pv_disk pvd __attribute__((aligned(8)));
|
|
struct vg_disk vgd __attribute__((aligned(8)));
|
|
struct dm_list uuids __attribute__((aligned(8)));
|
|
struct dm_list lvds __attribute__((aligned(8)));
|
|
struct pe_disk *extents __attribute__((aligned(8)));
|
|
};
|
|
|
|
/*
|
|
* Layout constants.
|
|
*/
|
|
#define METADATA_ALIGN 4096UL
|
|
#define LVM1_PE_ALIGN (65536UL >> SECTOR_SHIFT) /* PE alignment */
|
|
|
|
#define METADATA_BASE 0UL
|
|
#define PV_SIZE 1024UL
|
|
#define VG_SIZE 4096UL
|
|
|
|
/*
|
|
* Functions to calculate layout info.
|
|
*/
|
|
int calculate_layout(struct disk_list *dl);
|
|
int calculate_extent_count(struct physical_volume *pv, uint32_t extent_size,
|
|
uint32_t max_extent_count, uint64_t pe_start);
|
|
|
|
/*
|
|
* Low level io routines which read/write
|
|
* disk_lists.
|
|
*/
|
|
|
|
struct disk_list *read_disk(const struct format_type *fmt, struct device *dev,
|
|
struct dm_pool *mem, const char *vg_name);
|
|
|
|
int read_pvs_in_vg(const struct format_type *fmt, const char *vg_name,
|
|
struct dev_filter *filter,
|
|
struct dm_pool *mem, struct dm_list *results);
|
|
|
|
int write_disks(const struct format_type *fmt, struct dm_list *pvds,
|
|
int write_vg_metadata);
|
|
|
|
/*
|
|
* Functions to translate to between disk and in
|
|
* core structures.
|
|
*/
|
|
int import_pv(const struct format_type *fmt, struct dm_pool *mem,
|
|
struct device *dev, struct volume_group *vg,
|
|
struct physical_volume *pv, struct pv_disk *pvd,
|
|
struct vg_disk *vgd);
|
|
int export_pv(struct cmd_context *cmd, struct dm_pool *mem,
|
|
struct volume_group *vg,
|
|
struct pv_disk *pvd, struct physical_volume *pv);
|
|
|
|
int import_vg(struct dm_pool *mem,
|
|
struct volume_group *vg, struct disk_list *dl);
|
|
int export_vg(struct vg_disk *vgd, struct volume_group *vg);
|
|
|
|
int import_lv(struct cmd_context *cmd, struct dm_pool *mem,
|
|
struct logical_volume *lv, struct lv_disk *lvd);
|
|
|
|
int import_extents(struct cmd_context *cmd, struct volume_group *vg,
|
|
struct dm_list *pvds);
|
|
int export_extents(struct disk_list *dl, uint32_t lv_num,
|
|
struct logical_volume *lv, struct physical_volume *pv);
|
|
|
|
int import_pvs(const struct format_type *fmt, struct dm_pool *mem,
|
|
struct volume_group *vg, struct dm_list *pvds);
|
|
|
|
int import_lvs(struct dm_pool *mem, struct volume_group *vg, struct dm_list *pvds);
|
|
int export_lvs(struct disk_list *dl, struct volume_group *vg,
|
|
struct physical_volume *pv, const char *dev_dir);
|
|
|
|
int import_snapshots(struct dm_pool *mem, struct volume_group *vg,
|
|
struct dm_list *pvds);
|
|
|
|
int export_uuids(struct disk_list *dl, struct volume_group *vg);
|
|
|
|
void export_numbers(struct dm_list *pvds, struct volume_group *vg);
|
|
|
|
void export_pv_act(struct dm_list *pvds);
|
|
int munge_pvd(struct device *dev, struct pv_disk *pvd);
|
|
int read_vgd(struct device *dev, struct vg_disk *vgd, struct pv_disk *pvd);
|
|
|
|
/* blech */
|
|
int get_free_vg_number(struct format_instance *fid, struct dev_filter *filter,
|
|
const char *candidate_vg, int *result);
|
|
int export_vg_number(struct format_instance *fid, struct dm_list *pvds,
|
|
const char *vg_name, struct dev_filter *filter);
|
|
|
|
int generate_lvm1_system_id(struct cmd_context *cmd, char *s, const char *prefix);
|
|
|
|
#endif
|