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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2017 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _SEGTYPES_H
#define _SEGTYPES_H
#include "lib/metadata/metadata-exported.h"
struct segtype_handler;
struct cmd_context;
struct dm_config_tree;
struct lv_segment;
struct lv_activate_opts;
struct formatter;
struct dm_config_node;
struct dev_manager;
/* Feature flags */
#define SEG_CAN_SPLIT (1ULL << 0)
#define SEG_AREAS_STRIPED (1ULL << 1)
#define SEG_AREAS_MIRRORED (1ULL << 2)
#define SEG_SNAPSHOT (1ULL << 3)
/* #define SEG_FORMAT1_SUPPORT (1ULL << 4) */
#define SEG_VIRTUAL (1ULL << 5)
#define SEG_CANNOT_BE_ZEROED (1ULL << 6)
#define SEG_MONITORED (1ULL << 7)
#define SEG_RAID (1ULL << 10)
#define SEG_THIN_POOL (1ULL << 11)
#define SEG_THIN_VOLUME (1ULL << 12)
#define SEG_CACHE (1ULL << 13)
#define SEG_CACHE_POOL (1ULL << 14)
#define SEG_MIRROR (1ULL << 15)
#define SEG_ONLY_EXCLUSIVE (1ULL << 16) /* In cluster only exlusive activation */
#define SEG_CAN_ERROR_WHEN_FULL (1ULL << 17)
#define SEG_RAID0 (1ULL << 18)
#define SEG_RAID0_META (1ULL << 19)
#define SEG_RAID1 (1ULL << 20)
#define SEG_RAID10_NEAR (1ULL << 21)
#define SEG_RAID10 SEG_RAID10_NEAR
#define SEG_RAID4 (1ULL << 22)
#define SEG_RAID5_N (1ULL << 23)
#define SEG_RAID5_LA (1ULL << 24)
#define SEG_RAID5_LS (1ULL << 25)
#define SEG_RAID5_RA (1ULL << 26)
#define SEG_RAID5_RS (1ULL << 27)
#define SEG_RAID5 SEG_RAID5_LS
#define SEG_RAID6_NC (1ULL << 28)
#define SEG_RAID6_NR (1ULL << 29)
#define SEG_RAID6_ZR (1ULL << 30)
#define SEG_RAID6_LA_6 (1ULL << 31)
#define SEG_RAID6_LS_6 (1ULL << 32)
#define SEG_RAID6_RA_6 (1ULL << 33)
#define SEG_RAID6_RS_6 (1ULL << 34)
#define SEG_RAID6_N_6 (1ULL << 35)
#define SEG_RAID6 SEG_RAID6_ZR
#define SEG_WRITECACHE (1ULL << 36)
#define SEG_INTEGRITY (1ULL << 37)
#define SEG_STRIPED_TARGET (1ULL << 39)
#define SEG_LINEAR_TARGET (1ULL << 40)
#define SEG_VDO (1ULL << 41)
#define SEG_VDO_POOL (1ULL << 42)
#define SEG_UNKNOWN (1ULL << 63)
#define SEG_TYPE_NAME_LINEAR "linear"
#define SEG_TYPE_NAME_STRIPED "striped"
#define SEG_TYPE_NAME_MIRROR "mirror"
#define SEG_TYPE_NAME_SNAPSHOT "snapshot"
#define SEG_TYPE_NAME_THIN "thin"
#define SEG_TYPE_NAME_THIN_POOL "thin-pool"
#define SEG_TYPE_NAME_CACHE "cache"
#define SEG_TYPE_NAME_CACHE_POOL "cache-pool"
#define SEG_TYPE_NAME_WRITECACHE "writecache"
#define SEG_TYPE_NAME_INTEGRITY "integrity"
#define SEG_TYPE_NAME_ERROR "error"
#define SEG_TYPE_NAME_FREE "free"
#define SEG_TYPE_NAME_ZERO "zero"
#define SEG_TYPE_NAME_VDO "vdo"
#define SEG_TYPE_NAME_VDO_POOL "vdo-pool"
#define SEG_TYPE_NAME_RAID "raid"
#define SEG_TYPE_NAME_RAID0 "raid0"
#define SEG_TYPE_NAME_RAID0_META "raid0_meta"
#define SEG_TYPE_NAME_RAID1 "raid1"
#define SEG_TYPE_NAME_RAID10 "raid10"
#define SEG_TYPE_NAME_RAID10_NEAR "raid10_near"
#define SEG_TYPE_NAME_RAID4 "raid4"
#define SEG_TYPE_NAME_RAID5 "raid5"
#define SEG_TYPE_NAME_RAID5_N "raid5_n"
#define SEG_TYPE_NAME_RAID5_LA "raid5_la"
#define SEG_TYPE_NAME_RAID5_LS "raid5_ls"
#define SEG_TYPE_NAME_RAID5_RA "raid5_ra"
#define SEG_TYPE_NAME_RAID5_RS "raid5_rs"
#define SEG_TYPE_NAME_RAID6 "raid6"
#define SEG_TYPE_NAME_RAID6_NC "raid6_nc"
#define SEG_TYPE_NAME_RAID6_NR "raid6_nr"
#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr"
#define SEG_TYPE_NAME_RAID6_LA_6 "raid6_la_6"
#define SEG_TYPE_NAME_RAID6_LS_6 "raid6_ls_6"
#define SEG_TYPE_NAME_RAID6_RA_6 "raid6_ra_6"
#define SEG_TYPE_NAME_RAID6_RS_6 "raid6_rs_6"
#define SEG_TYPE_NAME_RAID6_N_6 "raid6_n_6"
#define segtype_is_linear(segtype) (!strcmp((segtype)->name, SEG_TYPE_NAME_LINEAR))
#define segtype_is_striped_target(segtype) ((segtype)->flags & SEG_STRIPED_TARGET ? 1 : 0)
#define segtype_is_cache(segtype) ((segtype)->flags & SEG_CACHE ? 1 : 0)
#define segtype_is_cache_pool(segtype) ((segtype)->flags & SEG_CACHE_POOL ? 1 : 0)
#define segtype_is_writecache(segtype) ((segtype)->flags & SEG_WRITECACHE ? 1 : 0)
#define segtype_is_integrity(segtype) ((segtype)->flags & SEG_INTEGRITY ? 1 : 0)
#define segtype_is_mirrored(segtype) ((segtype)->flags & SEG_AREAS_MIRRORED ? 1 : 0)
#define segtype_is_mirror(segtype) ((segtype)->flags & SEG_MIRROR ? 1 : 0)
#define segtype_is_pool(segtype) ((segtype)->flags & (SEG_CACHE_POOL | SEG_THIN_POOL) ? 1 : 0)
#define segtype_is_raid0(segtype) ((segtype)->flags & SEG_RAID0 ? 1 : 0)
#define segtype_is_raid0_meta(segtype) ((segtype)->flags & SEG_RAID0_META ? 1 : 0)
#define segtype_is_any_raid0(segtype) ((segtype)->flags & (SEG_RAID0 | SEG_RAID0_META) ? 1 : 0)
#define segtype_is_raid(segtype) ((segtype)->flags & SEG_RAID ? 1 : 0)
#define segtype_is_raid1(segtype) ((segtype)->flags & SEG_RAID1 ? 1 : 0)
#define segtype_is_raid4(segtype) ((segtype)->flags & SEG_RAID4 ? 1 : 0)
#define segtype_is_any_raid5(segtype) ((segtype)->flags & \
(SEG_RAID5_LS|SEG_RAID5_LA|SEG_RAID5_RS|SEG_RAID5_RA|SEG_RAID5_N) ? 1 : 0)
#define segtype_is_raid5_n(segtype) ((segtype)->flags & SEG_RAID5_N ? 1 : 0)
#define segtype_is_raid5_la(segtype) ((segtype)->flags & SEG_RAID5_LA ? 1 : 0)
#define segtype_is_raid5_ra(segtype) ((segtype)->flags & SEG_RAID5_RA ? 1 : 0)
#define segtype_is_raid5_ls(segtype) ((segtype)->flags & SEG_RAID5_LS ? 1 : 0)
#define segtype_is_raid5_rs(segtype) ((segtype)->flags & SEG_RAID5_RS ? 1 : 0)
#define segtype_is_any_raid6(segtype) ((segtype)->flags & \
(SEG_RAID6_ZR|SEG_RAID6_NC|SEG_RAID6_NR| \
SEG_RAID6_LA_6|SEG_RAID6_LS_6|SEG_RAID6_RA_6|SEG_RAID6_RS_6|SEG_RAID6_N_6) ? 1 : 0)
#define segtype_is_raid6_nc(segtype) ((segtype)->flags & SEG_RAID6_NC ? 1 : 0)
#define segtype_is_raid6_nr(segtype) ((segtype)->flags & SEG_RAID6_NR ? 1 : 0)
#define segtype_is_raid6_n_6(segtype) ((segtype)->flags & SEG_RAID6_N_6 ? 1 : 0)
#define segtype_is_raid6_zr(segtype) ((segtype)->flags & SEG_RAID6_ZR ? 1 : 0)
#define segtype_is_raid6_ls_6(segtype) ((segtype)->flags & SEG_RAID6_LS_6 ? 1 : 0)
#define segtype_is_raid6_rs_6(segtype) ((segtype)->flags & SEG_RAID6_RS_6 ? 1 : 0)
#define segtype_is_raid6_la_6(segtype) ((segtype)->flags & SEG_RAID6_LA_6 ? 1 : 0)
#define segtype_is_raid6_ra_6(segtype) ((segtype)->flags & SEG_RAID6_RA_6 ? 1 : 0)
#define segtype_is_raid10(segtype) ((segtype)->flags & SEG_RAID10 ? 1 : 0)
#define segtype_is_raid10_near(segtype) ((segtype)->flags & SEG_RAID10_NEAR ? 1 : 0)
/* FIXME: once raid10_{far,offset} supported */
#define segtype_is_raid10_far(segtype) 0 /* FIXME ((segtype)->flags & SEG_RAID10_FAR ? 1 : 0 */
#define segtype_is_raid10_offset(segtype) 0 /* FIXME ((segtype)->flags & SEG_RAID10_OFFSET ? 1 : 0 */
#define segtype_is_any_raid10(segtype) (segtype_is_raid10(segtype) || segtype_is_raid10_near(segtype) || segtype_is_raid10_far(segtype) || segtype_is_raid10_offset(segtype))
#define segtype_is_raid_with_meta(segtype) (segtype_is_raid(segtype) && !segtype_is_raid0(segtype))
#define segtype_is_striped_raid(segtype) (segtype_is_raid(segtype) && !segtype_is_raid1(segtype))
#define segtype_is_reshapable_raid(segtype) ((segtype_is_striped_raid(segtype) && !segtype_is_any_raid0(segtype)) || segtype_is_raid10_near(segtype) || segtype_is_raid10_offset(segtype))
#define segtype_is_snapshot(segtype) ((segtype)->flags & SEG_SNAPSHOT ? 1 : 0)
#define segtype_is_striped(segtype) ((segtype)->flags & SEG_AREAS_STRIPED ? 1 : 0)
#define segtype_is_thin(segtype) ((segtype)->flags & (SEG_THIN_POOL|SEG_THIN_VOLUME) ? 1 : 0)
#define segtype_is_thin_pool(segtype) ((segtype)->flags & SEG_THIN_POOL ? 1 : 0)
#define segtype_is_thin_volume(segtype) ((segtype)->flags & SEG_THIN_VOLUME ? 1 : 0)
#define segtype_is_vdo(segtype) ((segtype)->flags & SEG_VDO ? 1 : 0)
#define segtype_is_vdo_pool(segtype) ((segtype)->flags & SEG_VDO_POOL ? 1 : 0)
#define segtype_is_virtual(segtype) ((segtype)->flags & SEG_VIRTUAL ? 1 : 0)
#define segtype_is_unknown(segtype) ((segtype)->flags & SEG_UNKNOWN ? 1 : 0)
#define segtype_can_split(segtype) ((segtype)->flags & SEG_CAN_SPLIT ? 1 : 0)
#define segtype_cannot_be_zeroed(segtype) ((segtype)->flags & SEG_CANNOT_BE_ZEROED ? 1 : 0)
#define segtype_monitored(segtype) ((segtype)->flags & SEG_MONITORED ? 1 : 0)
#define segtype_only_exclusive(segtype) ((segtype)->flags & SEG_ONLY_EXCLUSIVE ? 1 : 0)
#define segtype_can_error_when_full(segtype) ((segtype)->flags & SEG_CAN_ERROR_WHEN_FULL ? 1 : 0)
#define segtype_supports_stripe_size(segtype) \
((segtype_is_striped(segtype) || segtype_is_mirror(segtype) || \
segtype_is_cache(segtype) || segtype_is_cache_pool(segtype) || \
segtype_is_thin(segtype) || segtype_is_snapshot(segtype) || \
(segtype_is_striped_raid(segtype))) ? 1 : 0)
#define seg_is_striped_target(seg) segtype_is_striped_target((seg)->segtype)
#define seg_is_cache(seg) segtype_is_cache((seg)->segtype)
#define seg_is_cache_pool(seg) segtype_is_cache_pool((seg)->segtype)
#define seg_is_writecache(seg) segtype_is_writecache((seg)->segtype)
#define seg_is_integrity(seg) segtype_is_integrity((seg)->segtype)
#define seg_is_used_cache_pool(seg) (seg_is_cache_pool(seg) && (!dm_list_empty(&(seg->lv)->segs_using_this_lv)))
#define seg_is_linear(seg) (seg_is_striped(seg) && ((seg)->area_count == 1))
#define seg_is_mirror(seg) segtype_is_mirror((seg)->segtype)
#define seg_is_mirrored(seg) segtype_is_mirrored((seg)->segtype)
#define seg_is_pool(seg) segtype_is_pool((seg)->segtype)
#define seg_is_raid0(seg) segtype_is_raid0((seg)->segtype)
#define seg_is_raid0_meta(seg) segtype_is_raid0_meta((seg)->segtype)
#define seg_is_any_raid0(seg) segtype_is_any_raid0((seg)->segtype)
#define seg_is_raid(seg) segtype_is_raid((seg)->segtype)
#define seg_is_raid1(seg) segtype_is_raid1((seg)->segtype)
#define seg_is_raid4(seg) segtype_is_raid4((seg)->segtype)
#define seg_is_any_raid5(seg) segtype_is_any_raid5((seg)->segtype)
#define seg_is_raid5_n(seg) segtype_is_raid5_n((seg)->segtype)
#define seg_is_raid5_la(seg) segtype_is_raid5_la((seg)->segtype)
#define seg_is_raid5_ra(seg) segtype_is_raid5_ra((seg)->segtype)
#define seg_is_raid5_ls(seg) segtype_is_raid5_ls((seg)->segtype)
#define seg_is_raid5_rs(seg) segtype_is_raid5_rs((seg)->segtype)
#define seg_is_any_raid6(seg) segtype_is_any_raid6((seg)->segtype)
#define seg_is_raid6_zr(seg) segtype_is_raid6_zr((seg)->segtype)
#define seg_is_raid6_nr(seg) segtype_is_raid6_nr((seg)->segtype)
#define seg_is_raid6_nc(seg) segtype_is_raid6_nc((seg)->segtype)
#define seg_is_raid6_n_6(seg) segtype_is_raid6_n_6((seg)->segtype)
#define seg_is_any_raid10(seg) segtype_is_any_raid10((seg)->segtype)
#define seg_is_raid10(seg) segtype_is_raid10((seg)->segtype)
#define seg_is_raid10_near(seg) segtype_is_raid10_near((seg)->segtype)
#define seg_is_raid_with_meta(seg) segtype_is_raid_with_meta((seg)->segtype)
#define seg_is_striped_raid(seg) segtype_is_striped_raid((seg)->segtype)
#define seg_is_reshapable_raid(seg) segtype_is_reshapable_raid((seg)->segtype)
#define seg_is_snapshot(seg) segtype_is_snapshot((seg)->segtype)
#define seg_is_striped(seg) segtype_is_striped((seg)->segtype)
#define seg_is_thin(seg) segtype_is_thin((seg)->segtype)
#define seg_is_thin_pool(seg) segtype_is_thin_pool((seg)->segtype)
#define seg_is_thin_volume(seg) segtype_is_thin_volume((seg)->segtype)
#define seg_is_vdo(seg) segtype_is_vdo((seg)->segtype)
#define seg_is_vdo_pool(seg) segtype_is_vdo_pool((seg)->segtype)
#define seg_is_virtual(seg) segtype_is_virtual((seg)->segtype)
#define seg_unknown(seg) segtype_is_unknown((seg)->segtype)
#define seg_can_split(seg) segtype_can_split((seg)->segtype)
#define seg_cannot_be_zeroed(seg) segtype_cannot_be_zeroed((seg)->segtype)
#define seg_monitored(seg) segtype_monitored((seg)->segtype)
#define seg_only_exclusive(seg) segtype_only_exclusive((seg)->segtype)
#define seg_can_error_when_full(seg) segtype_can_error_when_full((seg)->segtype)
struct segment_type {
struct dm_list list; /* Internal */
uint64_t flags;
uint32_t parity_devs; /* Parity drives required by segtype */
struct segtype_handler *ops;
const char *name;
const char *dso;
void *library; /* lvm_register_segtype() sets this. */
void *private; /* For the segtype handler to use. */
};
struct segtype_handler {
const char *(*name) (const struct lv_segment * seg);
const char *(*target_name) (const struct lv_segment *seg,
const struct lv_activate_opts *laopts);
void (*display) (const struct lv_segment * seg);
int (*text_export) (const struct lv_segment * seg,
struct formatter * f);
int (*text_import_area_count) (const struct dm_config_node * sn,
uint32_t *area_count);
int (*text_import) (struct lv_segment * seg,
const struct dm_config_node * sn,
struct dm_hash_table * pv_hash);
int (*merge_segments) (struct lv_segment * seg1,
struct lv_segment * seg2);
int (*add_target_line) (struct dev_manager *dm, struct dm_pool *mem,
struct cmd_context *cmd, void **target_state,
struct lv_segment *seg,
const struct lv_activate_opts *laopts,
struct dm_tree_node *node, uint64_t len,
uint32_t *pvmove_mirror_count);
int (*target_status_compatible) (const char *type);
int (*check_transient_status) (struct dm_pool *mem,
struct lv_segment *seg, char *params);
int (*target_percent) (void **target_state,
dm_percent_t *percent,
struct dm_pool * mem,
struct cmd_context *cmd,
struct lv_segment *seg, char *params,
uint64_t *total_numerator,
uint64_t *total_denominator);
int (*target_present) (struct cmd_context *cmd,
const struct lv_segment *seg,
unsigned *attributes);
int (*modules_needed) (struct dm_pool *mem,
const struct lv_segment *seg,
struct dm_list *modules);
void (*destroy) (struct segment_type * segtype);
int (*target_monitored) (struct lv_segment *seg, int *pending, int *monitored);
int (*target_monitor_events) (struct lv_segment *seg, int events);
int (*target_unmonitor_events) (struct lv_segment *seg, int events);
};
struct segment_type *get_segtype_from_string(struct cmd_context *cmd,
const char *str);
struct segment_type *get_segtype_from_flag(struct cmd_context *cmd,
uint64_t flag);
struct segtype_library;
int lvm_register_segtype(struct segtype_library *seglib,
struct segment_type *segtype);
struct segment_type *init_linear_segtype(struct cmd_context *cmd);
struct segment_type *init_striped_segtype(struct cmd_context *cmd);
struct segment_type *init_zero_segtype(struct cmd_context *cmd);
struct segment_type *init_error_segtype(struct cmd_context *cmd);
struct segment_type *init_free_segtype(struct cmd_context *cmd);
struct segment_type *init_unknown_segtype(struct cmd_context *cmd,
const char *name);
#define RAID_FEATURE_RAID10 (1U << 0) /* version 1.3 */
#define RAID_FEATURE_RAID0 (1U << 1) /* version 1.7 */
#define RAID_FEATURE_RESHAPING (1U << 2) /* version 1.8 */
#define RAID_FEATURE_RAID4 (1U << 3) /* ! version 1.8 or 1.9.0 */
#define RAID_FEATURE_SHRINK (1U << 4) /* version 1.9.0 */
#define RAID_FEATURE_RESHAPE (1U << 5) /* version 1.10.1 */
/*
* RAID_FEATURE_NEW_DEVICES_ACCEPT_REBUILD
* This signifies a behavioral change in dm-raid. Prior to upstream kernel
* commit 33e53f068, the kernel would refuse to allow 'rebuild' CTR args to
* be submitted when other devices in the array had uninitialized superblocks.
* After the commit, these parameters were allowed.
*
* The most obvious useful case of this new behavior is up-converting a
* linear device to RAID1. A new superblock is allocated for the linear dev
* and it will be uninitialized, while all the new images are specified for
* 'rebuild'. This valid scenario would not have been allowed prior to
* commit 33e53f068.
*
* Commit 33e53f068 did not bump the dm-raid version number. So it exists
* in some, but not all 1.8.1 versions of dm-raid. The only way to be
* certain the new behavior exists is to check for version 1.9.0.
*/
#define RAID_FEATURE_NEW_DEVICES_ACCEPT_REBUILD (1U << 6) /* version 1.9.0 */
#ifdef RAID_INTERNAL
int init_raid_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
#endif
#define THIN_FEATURE_DISCARDS (1U << 0)
#define THIN_FEATURE_EXTERNAL_ORIGIN (1U << 1)
#define THIN_FEATURE_HELD_ROOT (1U << 2)
#define THIN_FEATURE_BLOCK_SIZE (1U << 3)
#define THIN_FEATURE_DISCARDS_NON_POWER_2 (1U << 4)
#define THIN_FEATURE_METADATA_RESIZE (1U << 5)
#define THIN_FEATURE_EXTERNAL_ORIGIN_EXTEND (1U << 6)
#define THIN_FEATURE_ERROR_IF_NO_SPACE (1U << 7)
#ifdef THIN_INTERNAL
int init_thin_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
#endif
#ifdef CACHE_INTERNAL
int init_cache_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
#endif
#ifdef VDO_INTERNAL
int init_vdo_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
#endif
int init_writecache_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
int init_integrity_segtypes(struct cmd_context *cmd, struct segtype_library *seglib);
#define CACHE_FEATURE_POLICY_MQ (1U << 0)
#define CACHE_FEATURE_POLICY_SMQ (1U << 1)
#define CACHE_FEATURE_METADATA2 (1U << 2)
#define SNAPSHOT_FEATURE_FIXED_LEAK (1U << 0) /* version 1.12 */
#ifdef SNAPSHOT_INTERNAL
struct segment_type *init_snapshot_segtype(struct cmd_context *cmd);
#endif
#define MIRROR_LOG_CLUSTERED (1U << 0)
#ifdef MIRRORED_INTERNAL
struct segment_type *init_mirrored_segtype(struct cmd_context *cmd);
#endif
#ifdef CRYPT_INTERNAL
struct segment_type *init_crypt_segtype(struct cmd_context *cmd);
#endif
#endif
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