mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
7858f6fb16
o Full signed arguments to lvreduce/lvextend o Consistent lv_number/pe map use o Populate pv->pe_allocated o Fixes for allocation/writing of multiple LVs
234 lines
6.5 KiB
C
234 lines
6.5 KiB
C
/*
|
|
* Copyright (C) 2001 Sistina Software (UK) Limited.
|
|
*
|
|
* This file is released under the GPL.
|
|
*/
|
|
|
|
#ifndef DISK_REP_FORMAT1_H
|
|
#define DISK_REP_FORMAT1_H
|
|
|
|
#include "lvm-types.h"
|
|
#include "metadata.h"
|
|
#include "pool.h"
|
|
|
|
|
|
#define SECTOR_SIZE 512
|
|
|
|
#define MAX_PV 256
|
|
#define MAX_LV 256
|
|
#define MAX_VG 99
|
|
|
|
#define MIN_PE_SIZE ( 8192L / SECTOR_SIZE) /* 8 KB in sectors */
|
|
#define MAX_PE_SIZE ( 16L * 1024L * 1024L / SECTOR_SIZE * 1024)
|
|
#define PE_SIZE_PV_SIZE_REL 5 /* PV size must be at least 5 times PE size */
|
|
|
|
#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_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 */
|
|
|
|
|
|
struct data_area {
|
|
uint32_t base;
|
|
uint32_t size;
|
|
};
|
|
|
|
struct pv_disk {
|
|
uint8_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;
|
|
uint8_t pv_uuid[NAME_LEN];
|
|
uint8_t vg_name[NAME_LEN];
|
|
uint8_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;
|
|
};
|
|
|
|
struct lv_disk {
|
|
uint8_t lv_name[NAME_LEN];
|
|
uint8_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;
|
|
};
|
|
|
|
struct vg_disk {
|
|
uint8_t vg_uuid[ID_LEN]; /* volume group UUID */
|
|
uint8_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 */
|
|
};
|
|
|
|
struct pe_disk {
|
|
uint16_t lv_num;
|
|
uint16_t le_num;
|
|
};
|
|
|
|
|
|
struct uuid_list {
|
|
struct list list;
|
|
char uuid[NAME_LEN];
|
|
};
|
|
|
|
struct lvd_list {
|
|
struct list list;
|
|
struct lv_disk lvd;
|
|
};
|
|
|
|
struct disk_list {
|
|
struct list list;
|
|
struct pool *mem;
|
|
struct device *dev;
|
|
|
|
struct pv_disk pvd;
|
|
struct vg_disk vgd;
|
|
struct list uuids;
|
|
struct list lvds;
|
|
struct pe_disk *extents;
|
|
};
|
|
|
|
|
|
/*
|
|
* Layout constants.
|
|
*/
|
|
#define METADATA_ALIGN 4096UL
|
|
#define PE_ALIGN (65536UL / SECTOR_SIZE)
|
|
|
|
#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);
|
|
|
|
|
|
/*
|
|
* Low level io routines which read/write
|
|
* disk_lists.
|
|
*/
|
|
struct disk_list *read_disk(struct device *dev, struct pool *mem,
|
|
const char *vg_name);
|
|
|
|
int read_pvs_in_vg(const char *vg_name, struct dev_filter *filter,
|
|
struct pool *mem, struct list *results);
|
|
|
|
int write_pvds(struct list *pvs);
|
|
|
|
|
|
/*
|
|
* Functions to translate to between disk and in
|
|
* core structures.
|
|
*/
|
|
int import_pv(struct pool *mem, struct device *dev,
|
|
struct physical_volume *pv, struct pv_disk *pvd);
|
|
int export_pv(struct pv_disk *pvd, struct physical_volume *pv);
|
|
|
|
int import_vg(struct 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 pool *mem, struct logical_volume *lv,
|
|
struct lv_disk *lvd);
|
|
void export_lv(struct lv_disk *lvd, struct volume_group *vg,
|
|
struct logical_volume *lv, const char *prefix);
|
|
|
|
int import_extents(struct pool *mem, struct volume_group *vg, struct list *pvs);
|
|
int export_extents(struct disk_list *dl, int lv_num,
|
|
struct logical_volume *lv,
|
|
struct physical_volume *pv);
|
|
|
|
int import_pvs(struct pool *mem, struct list *pvs,
|
|
struct list *results, int *count);
|
|
|
|
int import_lvs(struct pool *mem, struct volume_group *vg,
|
|
struct list *pvs);
|
|
int export_lvs(struct disk_list *dl, struct volume_group *vg,
|
|
struct physical_volume *pv, const char *prefix);
|
|
|
|
int export_uuids(struct disk_list *dl, struct volume_group *vg);
|
|
|
|
void export_numbers(struct list *pvs, struct volume_group *vg);
|
|
|
|
void export_pv_act(struct list *pvs);
|
|
|
|
/* blech */
|
|
int get_free_vg_number(struct dev_filter *filter, const char *candidate_vg,
|
|
int *result);
|
|
int export_vg_number(struct list *pvs, const char *vg_name,
|
|
struct dev_filter *filter);
|
|
|
|
|
|
#endif
|