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/* bos72V src/bos/usr/include/lvmrec.h 1.27.1.7 */
/* */
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/* COPYRIGHT International Business Machines Corp. 1988,2020 */
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/* @(#)57 1.27.1.7 src/bos/usr/include/lvmrec.h, liblvm, bos72V, v2020_17A5 4/1/20 08:47:02 */
#ifndef _H_LVMREC
#define _H_LVMREC
/*
* COMPONENT_NAME: (LIBLVM) Logical Volume Manager - lvmrec.h
*/
/*
* This file contains the structures which describe the LVM
* information record. This is physical block 7 of each hardfile.
*/
#include <sys/inttypes.h>
#define LVM_LVMID 0x5F4C564D /* LVM id field of ASCII "_LVM" */
#define LVM_VERSION_1 1 /* first version - AIX 3.0 */
#define LVM_STRIPE_ENHANCE 2 /* version with striped lv's - AIX 4.1 */
#define LVM_1024_PPSIZE 3 /* ppsizes of 512 and 1024 */
#define LVM_GT_1016 4 /* version with support for > 1016 pps/pv */
#define LVM_BIG_VGDA 5 /* version with support for > 32 pvs/vg */
#define LVM_STRIPE_MIRROR 6 /* support for striped + mirrored lvs */
#define LVM_MIRROR_SCHED_99 7 /* support parallel write sequential read */
#define LVM_32_CHAR_VGID 8 /* 128-bit VGids are Created in AIX 5.1.0 */
/* and supported in AIX 4.3.3 and later */
#define LVM_GS_CONC_SUPPORT 8 /* support for Enhanced concurrent mode */
#define LVM_PASSIVE_MWCC 9 /* new passive mwcc algorithm introduced */
#define LVM_VARIABLE_LTG 9 /* support for variable ltg */
#define LVM_SNAPSHOT_VG 10 /* support for snapshot ltg */
#define LVM_GROW_DISK_SIZE 10 /* support for grow disk */
/* The following (LVM_DEVLVZ*) are versions
* to indicate support of an LV type that
* does not require skipping the LVCB.
* This is the mklv -T O option */
#define LVM_DEVLVZ43 11 /* Allows import back to 4.3 */
#define LVM_DEVLVZ51 12 /* Allows import back to 5.1 */
#define LVM_DEVLVZ52 13 /* 5.2 and later releases only */
/* Skip some version numbers to allow for
* future backporting of function */
#define LVM_VG_530 30 /* Support Large LTG and LV stripe sizes */
#define LVM_SVG_VER 31 /* Version 5.3 VG */
#define LVM_MP_VER 32 /* Support for Mirror Pools */
#define LVM_PVR_VER 33 /* VG with PV type restriction */
#define LVM_RET_VER 34 /* Support for Infinite Retry Option */
#define LVM_NO_MLTI_NODE_VARY 35 /* varyon on multiple nodes is not allowed */
#define LVM_4K_BLK_VER 36 /* Support disks with 4K block size */
#define LVM_ENC_VER 37 /* Support VG encryption */
#define LVM_MAX_VERSION LVM_ENC_VER /* max version # */
#define FIRST_ALTERNATE_VM 32000 /* first version number for alternate
* volume managers */
#define GPFS_PV 32001 /* PV reserved for GPFS */
#define DUMP_PV 32002 /* PV reserved for Dump */
#define POOL_PV 32003 /* PV reserved for pool */
/*************************************************************************
* LVM record for Scalable Volume Groups (default for AIX 5.3 and later)
* The lvm_id, vg_id and version must be in the same location as the
* previous lvm record for pre 53 code.
*************************************************************************
*/
struct lvm_rec {
/* Validity field to determine if LVM record is valid (_LVM) */
__long32_t lvm_id;
/* VGID */
struct unique_id vg_id;
/* Length of the VG Status Area */
__long32_t ppsa_len;
/* Length of the PV Missing area */
__long32_t pv_miss_len;
/* Length of the MWC Dirty Bits area */
__long32_t mwc_db_len;
/* Length of the VG info area */
__long32_t vg_info_len;
/* Length of the PV info area */
__long32_t pv_info_len;
/* Length of the LVCB info area */
__long32_t lvcb_info_len;
/* Length of the LV Entries Area */
__long32_t lvea_len;
/* Length of the PP Entries Area */
__long32_t ppea_len;
/* The length of the LVM metadata reserved area */
__long32_t res_area_len;
/* The PV index number within the metadata areas */
int pv_num;
/* Version number of this VG */
short int version;
/* Partition size. (2 to the power pp_size) */
short int pp_shift;
/*** VGSA ***/
/* PPSA Physical Sector Numbers (Primary/Secondary) */
daddr64_t ppsa_psn[2];
/* PV Missing Physical Sector Number (Primary/Secondary) */
daddr64_t pv_miss_psn[2];
/* Passive MWC Area Physical Sector Number (Primary/Secondary) */
daddr64_t mwc_db_psn[2];
/*** VGDA ***/
/* VG Info Physical Sector Number (Primary/Secondary) */
daddr64_t vg_info_psn[2];
/* PV Info Physical Sector Number (Primary/Secondary) */
daddr64_t pv_info_psn[2];
/* LVCB Info Physical Sector Number (Primary/Secondary) */
daddr64_t lvcb_info_psn[2];
/* LV Entries Physical Sector Numbers (Primary/Secondary) */
daddr64_t lvea_psn[2];
/* PP Entries Physical Sector Numbers (Primary/Secondary) */
daddr64_t ppea_psn[2];
/* VGSA Physical Sector Number (Primary/Secondary) */
daddr64_t vgsa_psn[2];
/* VGDA Physical Sector Number (Primary/Secondary) */
daddr64_t vgda_psn[2];
/* Length of the VG Status Area
* stalepp_len + pv_miss_len + mwc_db_len
*/
__long32_t vgsa_len;
/* Length of the VG Desciptor Area
* vg_info_len + pv_info_len + lvcb_info_len + lvea_len + ppea_len
*/
__long32_t vgda_len;
/* Logical Track Group size (2 to the power ltg_shift) */
int ltg_shift;
/* Length of the BB Relocation area */
__long32_t bb_reloc_len;
/* Bad Block Relocation Physical Sector Number */
daddr64_t bb_reloc_psn;
/* Length of the vg_encrypt area */
__long32_t encrypt_len;
/* vg_encrypt Sector Number */
daddr64_t encrypt_psn;
/* pad to DBSIZE (512 bytes) */
char reserved[248];
};
/* LVM record layout
00000E00 LVM___ID VGID__W1 VGID__W2 VGID__W3
00000E10 VGID__W4 PPSA_LEN PVM__LEN MWCDBLEN
00000E20 VGI__LEN PVI__LEN LVCBILEN LVEA_LEN
00000E30 PPEA_LEN RESA_LEN PV___NUM VERnPPSZ
00000E40 PPSAPSN0 PPSAPSN0 PPSAPSN1 PPSAPSN1
00000E50 PVM_PSN0 PVM_PSN0 PVM_PSN1 PVM_PSN1
00000E60 MWC_PSN0 MWC_PSN0 MWC_PSN1 MWC_PSN1
00000E70 VGI_PSN0 VGI_PSN0 VGI_PSN1 VGI_PSN1
00000E80 PVI_PSN0 PVI_PSN0 PVI_PSN1 PVI_PSN1
00000E90 LVCBPSN0 LVCBPSN0 LVCBPSN1 LVCBPSN1
00000EA0 LVEAPSN0 LVEAPSN0 LVEAPSN1 LVEAPSN1
00000EB0 PPEAPSN0 PPEAPSN0 PPEAPSN1 PPEAPSN1
00000EC0 VGSAPSN0 VGSAPSN0 VGSAPSN1 VGSAPSN1
00000ED0 VGDAPSN0 VGDAPSN0 VGDAPSN1 VGDAPSN1
00000EE0 VGSA_LEN VGDA_LEN LTG_SIZE BBR__LEN
00000EF0 BBR_PSN0 BBR_PSN0 ENC__LEN PADDING_
00000F00 ENC_PSN0 ENC_PSN0 RESERVED RESERVED
...
00000FF0 RESERVED RESERVED RESERVED RESERVED
*/
/*************************************************************************
* Old LVM Record (32/128 PV)
*************************************************************************
*/
struct lvm_rec_old {
/* Validity field to determine if LVM record is valid (_LVM) */
__long32_t lvm_id;
/* VGID */
struct unique_id vg_id;
/* The length of the LVM reserved area */
__long32_t lvmarea_len;
/* Length of the volume group descriptor area */
__long32_t vgda_len;
/* The physical sector numbers of the beginning of the volume
* group descriptor area copies on this disk */
daddr32_t vgda_psn[2];
/* The physical sector number of the beginning of a pool of
* blocks (located at the end of the PV) which are reserved for
* the relocation of bad blocks */
daddr32_t reloc_psn;
/* The length in number of sectors of the pool of bad block
* relocation blocks */
__long32_t reloc_len;
/* The physical volume number within the volume group of this
* physical volume */
short int pv_num;
/* The size in bytes for the partition, expressed as a power of
* 2 (i.e., the partition size is 2 to the power pp_size) */
short int pp_size;
/* Length of the volume group status area */
__long32_t vgsa_len;
/* The physical sector numbers of the beginning of the volume
* group status area copies on this disk */
daddr32_t vgsa_psn[2];
/* The version number of this volume group descriptor and status
* area */
short int version;
/* Not used. */
short int vg_type;
/* The size in bytes for the LTG, expressed as a power of
* 2 (i.e., the LTG size is 2 to the power ltg_shift) */
int ltg_shift;
/* Length of the vg_encrypt area */
__long32_t encrypt_len;
/* vg_encrypt Sector Number */
daddr64_t encrypt_psn;
char res1 [432]; /* reserved area */
};
/* Old LVM record layout
00000E00 LVM___ID VGID__W1 VGID__W2 VGID__W3
00000E10 VGID__W4 AREA_LEN VGDA_LEN VGDAPSN0
00000E20 VGDAPSN1 RELOCPSN RELOCLEN PVnmPPsh
00000E30 VGSA_LEN VGSAPSN0 VGSAPSN1 VERnTYPE
00000E40 LTG_SIZE ENC__LEN ENC_PSN0 ENC_PSN0
00000E50 RESERVED RESERVED RESERVED RESERVED
...
00000FF0 RESERVED RESERVED RESERVED RESERVED
*/
#endif /* _H_LVMREC */