--- /dev/null
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 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 General Public License v.2.
+ *
+ * You should have received a copy of the GNU 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
+ */
+
+/*
+ * This is the representation of LVM metadata that is being adapted
+ * for library export.
+ */
+
+#ifndef _LVM_METADATA_EXPORTED_H
+#define _LVM_METADATA_EXPORTED_H
+
+#include "uuid.h"
+
+struct physical_volume;
+typedef struct physical_volume pv_t;
+struct volume_group;
+typedef struct volume_group vg_t;
+
+struct logical_volume;
+
+struct lv_segment;
+struct pv_segment;
+
+#define MAX_STRIPES 128U
+#define SECTOR_SHIFT 9L
+#define STRIPE_SIZE_MIN ( (unsigned) lvm_getpagesize() >> SECTOR_SHIFT) /* PAGESIZE in sectors */
+#define STRIPE_SIZE_MAX ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
+#define STRIPE_SIZE_LIMIT ((UINT_MAX >> 2) + 1)
+#define PV_MIN_SIZE ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
+#define MAX_RESTRICTED_LVS 255 /* Used by FMT_RESTRICTED_LVIDS */
+
+/* Various flags */
+/* Note that the bits no longer necessarily correspond to LVM1 disk format */
+
+#define PARTIAL_VG 0x00000001U /* VG */
+#define EXPORTED_VG 0x00000002U /* VG PV */
+#define RESIZEABLE_VG 0x00000004U /* VG */
+
+/* May any free extents on this PV be used or must they be left free? */
+#define ALLOCATABLE_PV 0x00000008U /* PV */
+
+//#define SPINDOWN_LV 0x00000010U /* LV */
+//#define BADBLOCK_ON 0x00000020U /* LV */
+#define VISIBLE_LV 0x00000040U /* LV */
+#define FIXED_MINOR 0x00000080U /* LV */
+/* FIXME Remove when metadata restructuring is completed */
+#define SNAPSHOT 0x00001000U /* LV - internal use only */
+#define PVMOVE 0x00002000U /* VG LV SEG */
+#define LOCKED 0x00004000U /* LV */
+#define MIRRORED 0x00008000U /* LV - internal use only */
+//#define VIRTUAL 0x00010000U /* LV - internal use only */
+#define MIRROR_LOG 0x00020000U /* LV */
+#define MIRROR_IMAGE 0x00040000U /* LV */
+#define MIRROR_NOTSYNCED 0x00080000U /* LV */
+//#define ACTIVATE_EXCL 0x00100000U /* LV - internal use only */
+//#define PRECOMMITTED 0x00200000U /* VG - internal use only */
+
+#define LVM_READ 0x00000100U /* LV VG */
+#define LVM_WRITE 0x00000200U /* LV VG */
+#define CLUSTERED 0x00000400U /* VG */
+//#define SHARED 0x00000800U /* VG */
+
+/* Format features flags */
+#define FMT_SEGMENTS 0x00000001U /* Arbitrary segment params? */
+#define FMT_MDAS 0x00000002U /* Proper metadata areas? */
+#define FMT_TAGS 0x00000004U /* Tagging? */
+#define FMT_UNLIMITED_VOLS 0x00000008U /* Unlimited PVs/LVs? */
+#define FMT_RESTRICTED_LVIDS 0x00000010U /* LVID <= 255 */
+#define FMT_ORPHAN_ALLOCATABLE 0x00000020U /* Orphan PV allocatable? */
+//#define FMT_PRECOMMIT 0x00000040U /* Supports pre-commit? */
+#define FMT_RESIZE_PV 0x00000080U /* Supports pvresize? */
+#define FMT_UNLIMITED_STRIPESIZE 0x00000100U /* Unlimited stripe size? */
+
+/* Ordered list - see lv_manip.c */
+typedef enum {
+ ALLOC_INVALID,
+ ALLOC_CONTIGUOUS,
+ ALLOC_CLING,
+ ALLOC_NORMAL,
+ ALLOC_ANYWHERE,
+ ALLOC_INHERIT
+} alloc_policy_t;
+
+typedef enum {
+ AREA_UNASSIGNED,
+ AREA_PV,
+ AREA_LV
+} area_type_t;
+
+struct cmd_context;
+struct format_handler;
+struct labeller;
+
+struct format_type {
+ struct list list;
+ struct cmd_context *cmd;
+ struct format_handler *ops;
+ struct labeller *labeller;
+ const char *name;
+ const char *alias;
+ uint32_t features;
+ void *library;
+ void *private;
+};
+
+struct pv_segment {
+ struct list list; /* Member of pv->segments: ordered list
+ * covering entire data area on this PV */
+
+ struct physical_volume *pv;
+ uint32_t pe;
+ uint32_t len;
+
+ struct lv_segment *lvseg; /* NULL if free space */
+ uint32_t lv_area; /* Index to area in LV segment */
+};
+
+struct physical_volume {
+ struct id id;
+ struct device *dev;
+ const struct format_type *fmt;
+ const char *vg_name;
+ struct id vgid;
+
+ uint32_t status;
+ uint64_t size;
+
+ /* physical extents */
+ uint32_t pe_size;
+ uint64_t pe_start;
+ uint32_t pe_count;
+ uint32_t pe_alloc_count;
+
+ struct list segments; /* Ordered pv_segments covering complete PV */
+ struct list tags;
+};
+
+struct format_instance {
+ const struct format_type *fmt;
+ struct list metadata_areas; /* e.g. metadata locations */
+ void *private;
+};
+
+struct volume_group {
+ struct cmd_context *cmd;
+ struct format_instance *fid;
+ uint32_t seqno; /* Metadata sequence number */
+
+ struct id id;
+ char *name;
+ char *system_id;
+
+ uint32_t status;
+ alloc_policy_t alloc;
+
+ uint32_t extent_size;
+ uint32_t extent_count;
+ uint32_t free_count;
+
+ uint32_t max_lv;
+ uint32_t max_pv;
+
+ /* physical volumes */
+ uint32_t pv_count;
+ struct list pvs;
+
+ /* logical volumes */
+ uint32_t lv_count;
+ uint32_t snapshot_count;
+ struct list lvs;
+
+ struct list tags;
+};
+
+/* There will be one area for each stripe */
+struct lv_segment_area {
+ area_type_t type;
+ union {
+ struct {
+ struct pv_segment *pvseg;
+ } pv;
+ struct {
+ struct logical_volume *lv;
+ uint32_t le;
+ } lv;
+ } u;
+};
+
+struct segment_type;
+struct lv_segment {
+ struct list list;
+ struct logical_volume *lv;
+
+ const struct segment_type *segtype;
+ uint32_t le;
+ uint32_t len;
+
+ uint32_t status;
+
+ /* FIXME Fields depend on segment type */
+ uint32_t stripe_size;
+ uint32_t area_count;
+ uint32_t area_len;
+ struct logical_volume *origin;
+ struct logical_volume *cow;
+ struct list origin_list;
+ uint32_t chunk_size; /* For snapshots - in sectors */
+ uint32_t region_size; /* For mirrors - in sectors */
+ uint32_t extents_copied;
+ struct logical_volume *log_lv;
+ struct lv_segment *mirror_seg;
+
+ struct list tags;
+
+ struct lv_segment_area *areas;
+};
+
+#define seg_type(seg, s) (seg)->areas[(s)].type
+#define seg_pv(seg, s) (seg)->areas[(s)].u.pv.pvseg->pv
+#define seg_lv(seg, s) (seg)->areas[(s)].u.lv.lv
+
+struct logical_volume {
+ union lvid lvid;
+ char *name;
+
+ struct volume_group *vg;
+
+ uint32_t status;
+ alloc_policy_t alloc;
+ uint32_t read_ahead;
+ int32_t major;
+ int32_t minor;
+
+ uint64_t size; /* Sectors */
+ uint32_t le_count;
+
+ uint32_t origin_count;
+ struct list snapshot_segs;
+ struct lv_segment *snapshot;
+
+ struct list segments;
+ struct list tags;
+};
+
+struct pe_range {
+ struct list list;
+ uint32_t start; /* PEs */
+ uint32_t count; /* PEs */
+};
+
+struct pv_list {
+ struct list list;
+ struct physical_volume *pv;
+ struct list *mdas; /* Metadata areas */
+ struct list *pe_ranges; /* Ranges of PEs e.g. for allocation */
+};
+
+struct lv_list {
+ struct list list;
+ struct logical_volume *lv;
+};
+
+/*
+* Utility functions
+*/
+int vg_write(struct volume_group *vg);
+int vg_commit(struct volume_group *vg);
+int vg_revert(struct volume_group *vg);
+struct volume_group *vg_read(struct cmd_context *cmd, const char *vg_name,
+ const char *vgid, int *consistent);
+struct physical_volume *pv_read(struct cmd_context *cmd, const char *pv_name,
+ struct list *mdas, uint64_t *label_sector,
+ int warnings);
+struct list *get_pvs(struct cmd_context *cmd);
+
+/* Set full_scan to 1 to re-read every (filtered) device label */
+struct list *get_vgs(struct cmd_context *cmd, int full_scan);
+struct list *get_vgids(struct cmd_context *cmd, int full_scan);
+
+int pv_write(struct cmd_context *cmd, struct physical_volume *pv,
+ struct list *mdas, int64_t label_sector);
+int is_orphan(pv_t *pv);
+
+/* pe_start and pe_end relate to any existing data so that new metadata
+* areas can avoid overlap */
+pv_t *pv_create(const struct format_type *fmt,
+ struct device *dev,
+ struct id *id,
+ uint64_t size,
+ uint64_t pe_start,
+ uint32_t existing_extent_count,
+ uint32_t existing_extent_size,
+ int pvmetadatacopies,
+ uint64_t pvmetadatasize, struct list *mdas);
+int pv_resize(struct physical_volume *pv, struct volume_group *vg,
+ uint32_t new_pe_count);
+int pv_analyze(struct cmd_context *cmd, const char *pv_name,
+ int64_t label_sector);
+
+struct volume_group *vg_create(struct cmd_context *cmd, const char *name,
+ uint32_t extent_size, uint32_t max_pv,
+ uint32_t max_lv, alloc_policy_t alloc,
+ int pv_count, char **pv_names);
+int vg_remove(struct volume_group *vg);
+int vg_rename(struct cmd_context *cmd, struct volume_group *vg,
+ const char *new_name);
+int vg_extend(struct volume_group *vg, int pv_count, char **pv_names);
+int vg_change_pesize(struct cmd_context *cmd, struct volume_group *vg,
+ uint32_t new_extent_size);
+int vg_split_mdas(struct cmd_context *cmd, struct volume_group *vg_from,
+ struct volume_group *vg_to);
+
+/* Manipulate LVs */
+struct logical_volume *lv_create_empty(struct format_instance *fi,
+ const char *name,
+ union lvid *lvid,
+ uint32_t status,
+ alloc_policy_t alloc,
+ int import,
+ struct volume_group *vg);
+
+/* Reduce the size of an LV by extents */
+int lv_reduce(struct logical_volume *lv, uint32_t extents);
+
+/* Empty an LV prior to deleting it */
+int lv_empty(struct logical_volume *lv);
+
+/* Entry point for all LV extent allocations */
+int lv_extend(struct logical_volume *lv,
+ const struct segment_type *segtype,
+ uint32_t stripes, uint32_t stripe_size,
+ uint32_t mirrors, uint32_t extents,
+ struct physical_volume *mirrored_pv, uint32_t mirrored_pe,
+ uint32_t status, struct list *allocatable_pvs,
+ alloc_policy_t alloc);
+
+/* lv must be part of lv->vg->lvs */
+int lv_remove(struct logical_volume *lv);
+
+/* Find a PV within a given VG */
+struct pv_list *find_pv_in_vg(struct volume_group *vg, const char *pv_name);
+pv_t *find_pv_in_vg_by_uuid(struct volume_group *vg, struct id *id);
+
+/* Find an LV within a given VG */
+struct lv_list *find_lv_in_vg(struct volume_group *vg, const char *lv_name);
+
+/* FIXME Merge these functions with ones above */
+struct logical_volume *find_lv(struct volume_group *vg, const char *lv_name);
+struct physical_volume *find_pv_by_name(struct cmd_context *cmd,
+ const char *pv_name);
+
+/* Find LV segment containing given LE */
+struct lv_segment *first_seg(struct logical_volume *lv);
+
+
+/*
+* Useful functions for managing snapshots.
+*/
+int lv_is_origin(const struct logical_volume *lv);
+int lv_is_cow(const struct logical_volume *lv);
+int lv_is_visible(const struct logical_volume *lv);
+
+int pv_is_in_vg(struct volume_group *vg, struct physical_volume *pv);
+
+/* Given a cow LV, return return the snapshot lv_segment that uses it */
+struct lv_segment *find_cow(const struct logical_volume *lv);
+
+/* Given a cow LV, return its origin */
+struct logical_volume *origin_from_cow(const struct logical_volume *lv);
+
+int vg_add_snapshot(struct format_instance *fid, const char *name,
+ struct logical_volume *origin, struct logical_volume *cow,
+ union lvid *lvid, uint32_t extent_count,
+ uint32_t chunk_size);
+
+int vg_remove_snapshot(struct logical_volume *cow);
+
+int vg_check_status(struct volume_group *vg, uint32_t status);
+
+/*
+* Mirroring functions
+*/
+struct alloc_handle;
+uint32_t adjusted_mirror_region_size(uint32_t extent_size, uint32_t extents,
+ uint32_t region_size);
+int create_mirror_layers(struct alloc_handle *ah,
+ uint32_t first_area,
+ uint32_t num_mirrors,
+ struct logical_volume *lv,
+ const struct segment_type *segtype,
+ uint32_t status,
+ uint32_t region_size,
+ struct logical_volume *log_lv);
+
+int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
+ struct list *removable_pvs, int remove_log);
+int reconfigure_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
+ struct list *removable_pvs, int remove_log);
+
+int insert_pvmove_mirrors(struct cmd_context *cmd,
+ struct logical_volume *lv_mirr,
+ struct list *source_pvl,
+ struct logical_volume *lv,
+ struct list *allocatable_pvs,
+ alloc_policy_t alloc,
+ struct list *lvs_changed);
+int remove_pvmove_mirrors(struct volume_group *vg,
+ struct logical_volume *lv_mirr);
+struct logical_volume *find_pvmove_lv(struct volume_group *vg,
+ struct device *dev, uint32_t lv_type);
+struct logical_volume *find_pvmove_lv_from_pvname(struct cmd_context *cmd,
+ struct volume_group *vg,
+ const char *name,
+ uint32_t lv_type);
+const char *get_pvmove_pvname_from_lv(struct logical_volume *lv);
+const char *get_pvmove_pvname_from_lv_mirr(struct logical_volume *lv_mirr);
+float copy_percent(struct logical_volume *lv_mirr);
+struct list *lvs_using_lv(struct cmd_context *cmd, struct volume_group *vg,
+ struct logical_volume *lv);
+
+uint32_t find_free_lvnum(struct logical_volume *lv);
+char *generate_lv_name(struct volume_group *vg, const char *format,
+ char *buffer, size_t len);
+
+/*
+* Begin skeleton for external LVM library
+*/
+struct device *pv_dev(pv_t *pv);
+const char *pv_vg_name(pv_t *pv);
+uint64_t pv_size(pv_t *pv);
+uint32_t pv_status(pv_t *pv);
+uint32_t pv_pe_size(pv_t *pv);
+uint64_t pv_pe_start(pv_t *pv);
+uint32_t pv_pe_count(pv_t *pv);
+uint32_t pv_pe_alloc_count(pv_t *pv);
+
+uint32_t vg_status(vg_t *vg);
+
+#endif
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
#include "ctype.h"
#include "dev-cache.h"
#include "lvm-string.h"
-#include "uuid.h"
+#include "metadata-exported.h"
-#define MAX_STRIPES 128U
-#define SECTOR_SHIFT 9L
+//#define MAX_STRIPES 128U
+//#define SECTOR_SHIFT 9L
#define SECTOR_SIZE ( 1L << SECTOR_SHIFT )
-#define STRIPE_SIZE_MIN ( (unsigned) lvm_getpagesize() >> SECTOR_SHIFT) /* PAGESIZE in sectors */
-#define STRIPE_SIZE_MAX ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
-#define STRIPE_SIZE_LIMIT ((UINT_MAX >> 2) + 1)
-#define PV_MIN_SIZE ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
-#define MAX_RESTRICTED_LVS 255 /* Used by FMT_RESTRICTED_LVIDS */
+//#define STRIPE_SIZE_MIN ( (unsigned) lvm_getpagesize() >> SECTOR_SHIFT) /* PAGESIZE in sectors */
+//#define STRIPE_SIZE_MAX ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
+//#define STRIPE_SIZE_LIMIT ((UINT_MAX >> 2) + 1)
+//#define PV_MIN_SIZE ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
+//#define MAX_RESTRICTED_LVS 255 /* Used by FMT_RESTRICTED_LVIDS */
#define MIRROR_LOG_SIZE 1 /* Extents */
/* Various flags */
/* Note that the bits no longer necessarily correspond to LVM1 disk format */
-#define PARTIAL_VG 0x00000001U /* VG */
-#define EXPORTED_VG 0x00000002U /* VG PV */
-#define RESIZEABLE_VG 0x00000004U /* VG */
+//#define PARTIAL_VG 0x00000001U /* VG */
+//#define EXPORTED_VG 0x00000002U /* VG PV */
+//#define RESIZEABLE_VG 0x00000004U /* VG */
/* May any free extents on this PV be used or must they be left free? */
-#define ALLOCATABLE_PV 0x00000008U /* PV */
+//#define ALLOCATABLE_PV 0x00000008U /* PV */
#define SPINDOWN_LV 0x00000010U /* LV */
#define BADBLOCK_ON 0x00000020U /* LV */
-#define VISIBLE_LV 0x00000040U /* LV */
-#define FIXED_MINOR 0x00000080U /* LV */
+//#define VISIBLE_LV 0x00000040U /* LV */
+//#define FIXED_MINOR 0x00000080U /* LV */
/* FIXME Remove when metadata restructuring is completed */
-#define SNAPSHOT 0x00001000U /* LV - internal use only */
-#define PVMOVE 0x00002000U /* VG LV SEG */
-#define LOCKED 0x00004000U /* LV */
-#define MIRRORED 0x00008000U /* LV - internal use only */
+//#define SNAPSHOT 0x00001000U /* LV - internal use only */
+//#define PVMOVE 0x00002000U /* VG LV SEG */
+//#define LOCKED 0x00004000U /* LV */
+//#define MIRRORED 0x00008000U /* LV - internal use only */
#define VIRTUAL 0x00010000U /* LV - internal use only */
-#define MIRROR_LOG 0x00020000U /* LV */
-#define MIRROR_IMAGE 0x00040000U /* LV */
-#define MIRROR_NOTSYNCED 0x00080000U /* LV */
+//#define MIRROR_LOG 0x00020000U /* LV */
+//#define MIRROR_IMAGE 0x00040000U /* LV */
+//#define MIRROR_NOTSYNCED 0x00080000U /* LV */
#define ACTIVATE_EXCL 0x00100000U /* LV - internal use only */
#define PRECOMMITTED 0x00200000U /* VG - internal use only */
-#define LVM_READ 0x00000100U /* LV VG */
-#define LVM_WRITE 0x00000200U /* LV VG */
-#define CLUSTERED 0x00000400U /* VG */
+//#define LVM_READ 0x00000100U /* LV VG */
+//#define LVM_WRITE 0x00000200U /* LV VG */
+//#define CLUSTERED 0x00000400U /* VG */
#define SHARED 0x00000800U /* VG */
/* Format features flags */
-#define FMT_SEGMENTS 0x00000001U /* Arbitrary segment params? */
-#define FMT_MDAS 0x00000002U /* Proper metadata areas? */
-#define FMT_TAGS 0x00000004U /* Tagging? */
-#define FMT_UNLIMITED_VOLS 0x00000008U /* Unlimited PVs/LVs? */
-#define FMT_RESTRICTED_LVIDS 0x00000010U /* LVID <= 255 */
-#define FMT_ORPHAN_ALLOCATABLE 0x00000020U /* Orphan PV allocatable? */
+//#define FMT_SEGMENTS 0x00000001U /* Arbitrary segment params? */
+//#define FMT_MDAS 0x00000002U /* Proper metadata areas? */
+//#define FMT_TAGS 0x00000004U /* Tagging? */
+//#define FMT_UNLIMITED_VOLS 0x00000008U /* Unlimited PVs/LVs? */
+//#define FMT_RESTRICTED_LVIDS 0x00000010U /* LVID <= 255 */
+//#define FMT_ORPHAN_ALLOCATABLE 0x00000020U /* Orphan PV allocatable? */
#define FMT_PRECOMMIT 0x00000040U /* Supports pre-commit? */
-#define FMT_RESIZE_PV 0x00000080U /* Supports pvresize? */
-#define FMT_UNLIMITED_STRIPESIZE 0x00000100U /* Unlimited stripe size? */
-
-/* Ordered list - see lv_manip.c */
-typedef enum {
- ALLOC_INVALID,
- ALLOC_CONTIGUOUS,
- ALLOC_CLING,
- ALLOC_NORMAL,
- ALLOC_ANYWHERE,
- ALLOC_INHERIT
-} alloc_policy_t;
-
-typedef enum {
- AREA_UNASSIGNED,
- AREA_PV,
- AREA_LV
-} area_type_t;
-
-struct cmd_context;
-struct format_handler;
-struct labeller;
-
-struct format_type {
- struct list list;
- struct cmd_context *cmd;
- struct format_handler *ops;
- struct labeller *labeller;
- const char *name;
- const char *alias;
- uint32_t features;
- void *library;
- void *private;
-};
-
-struct pv_segment {
- struct list list; /* Member of pv->segments: ordered list
- * covering entire data area on this PV */
-
- struct physical_volume *pv;
- uint32_t pe;
- uint32_t len;
-
- struct lv_segment *lvseg; /* NULL if free space */
- uint32_t lv_area; /* Index to area in LV segment */
-};
-
-struct physical_volume {
- struct id id;
- struct device *dev;
- const struct format_type *fmt;
- const char *vg_name;
- struct id vgid;
+//#define FMT_RESIZE_PV 0x00000080U /* Supports pvresize? */
+//#define FMT_UNLIMITED_STRIPESIZE 0x00000100U /* Unlimited stripe size? */
- uint32_t status;
- uint64_t size;
-
- /* physical extents */
- uint32_t pe_size;
- uint64_t pe_start;
- uint32_t pe_count;
- uint32_t pe_alloc_count;
-
- struct list segments; /* Ordered pv_segments covering complete PV */
- struct list tags;
-};
-
-typedef struct physical_volume pv_t;
struct metadata_area;
-struct format_instance;
/* Per-format per-metadata area operations */
struct metadata_area_ops {
void *metadata_locn;
};
-struct format_instance {
- const struct format_type *fmt;
- struct list metadata_areas; /* e.g. metadata locations */
- void *private;
-};
-
-struct volume_group {
- struct cmd_context *cmd;
- struct format_instance *fid;
- uint32_t seqno; /* Metadata sequence number */
-
- struct id id;
- char *name;
- char *system_id;
-
- uint32_t status;
- alloc_policy_t alloc;
-
- uint32_t extent_size;
- uint32_t extent_count;
- uint32_t free_count;
-
- uint32_t max_lv;
- uint32_t max_pv;
-
- /* physical volumes */
- uint32_t pv_count;
- struct list pvs;
-
- /* logical volumes */
- uint32_t lv_count;
- uint32_t snapshot_count;
- struct list lvs;
-
- struct list tags;
-};
-
-typedef struct volume_group vg_t;
-
-/* There will be one area for each stripe */
-struct lv_segment_area {
- area_type_t type;
- union {
- struct {
- struct pv_segment *pvseg;
- } pv;
- struct {
- struct logical_volume *lv;
- uint32_t le;
- } lv;
- } u;
-};
-
-struct segment_type;
-struct lv_segment {
- struct list list;
- struct logical_volume *lv;
-
- const struct segment_type *segtype;
- uint32_t le;
- uint32_t len;
-
- uint32_t status;
-
- /* FIXME Fields depend on segment type */
- uint32_t stripe_size;
- uint32_t area_count;
- uint32_t area_len;
- struct logical_volume *origin;
- struct logical_volume *cow;
- struct list origin_list;
- uint32_t chunk_size; /* For snapshots - in sectors */
- uint32_t region_size; /* For mirrors - in sectors */
- uint32_t extents_copied;
- struct logical_volume *log_lv;
- struct lv_segment *mirror_seg;
-
- struct list tags;
-
- struct lv_segment_area *areas;
-};
-
-#define seg_type(seg, s) (seg)->areas[(s)].type
#define seg_pvseg(seg, s) (seg)->areas[(s)].u.pv.pvseg
-#define seg_pv(seg, s) (seg)->areas[(s)].u.pv.pvseg->pv
#define seg_dev(seg, s) (seg)->areas[(s)].u.pv.pvseg->pv->dev
#define seg_pe(seg, s) (seg)->areas[(s)].u.pv.pvseg->pe
-#define seg_lv(seg, s) (seg)->areas[(s)].u.lv.lv
#define seg_le(seg, s) (seg)->areas[(s)].u.lv.le
-struct logical_volume {
- union lvid lvid;
- char *name;
-
- struct volume_group *vg;
-
- uint32_t status;
- alloc_policy_t alloc;
- uint32_t read_ahead;
- int32_t major;
- int32_t minor;
-
- uint64_t size; /* Sectors */
- uint32_t le_count;
-
- uint32_t origin_count;
- struct list snapshot_segs;
- struct lv_segment *snapshot;
-
- struct list segments;
- struct list tags;
-};
-
struct name_list {
struct list list;
char *name;
};
-struct pe_range {
- struct list list;
- uint32_t start; /* PEs */
- uint32_t count; /* PEs */
-};
-
-struct pv_list {
- struct list list;
- struct physical_volume *pv;
- struct list *mdas; /* Metadata areas */
- struct list *pe_ranges; /* Ranges of PEs e.g. for allocation */
-};
-
-struct lv_list {
- struct list list;
- struct logical_volume *lv;
-};
-
struct mda_list {
struct list list;
struct device_area mda;
*/
unsigned long pe_align(void);
int vg_validate(struct volume_group *vg);
-int vg_write(struct volume_group *vg);
-int vg_commit(struct volume_group *vg);
-int vg_revert(struct volume_group *vg);
-struct volume_group *vg_read(struct cmd_context *cmd, const char *vg_name,
- const char *vgid, int *consistent);
-struct physical_volume *pv_read(struct cmd_context *cmd, const char *pv_name,
- struct list *mdas, uint64_t *label_sector,
- int warnings);
-struct list *get_pvs(struct cmd_context *cmd);
-
-/* Set full_scan to 1 to re-read every (filtered) device label */
-struct list *get_vgs(struct cmd_context *cmd, int full_scan);
-struct list *get_vgids(struct cmd_context *cmd, int full_scan);
-
-int pv_write(struct cmd_context *cmd, struct physical_volume *pv,
- struct list *mdas, int64_t label_sector);
+
int pv_write_orphan(struct cmd_context *cmd, struct physical_volume *pv);
-int is_orphan(pv_t *pv);
-
-/* pe_start and pe_end relate to any existing data so that new metadata
- * areas can avoid overlap */
-pv_t *pv_create(const struct format_type *fmt,
- struct device *dev,
- struct id *id,
- uint64_t size,
- uint64_t pe_start,
- uint32_t existing_extent_count,
- uint32_t existing_extent_size,
- int pvmetadatacopies,
- uint64_t pvmetadatasize, struct list *mdas);
-int pv_resize(struct physical_volume *pv, struct volume_group *vg,
- uint32_t new_pe_count);
-int pv_analyze(struct cmd_context *cmd, const char *pv_name,
- int64_t label_sector);
-
-struct volume_group *vg_create(struct cmd_context *cmd, const char *name,
- uint32_t extent_size, uint32_t max_pv,
- uint32_t max_lv, alloc_policy_t alloc,
- int pv_count, char **pv_names);
-int vg_remove(struct volume_group *vg);
-int vg_rename(struct cmd_context *cmd, struct volume_group *vg,
- const char *new_name);
-int vg_extend(struct volume_group *vg, int pv_count, char **pv_names);
-int vg_change_pesize(struct cmd_context *cmd, struct volume_group *vg,
- uint32_t new_extent_size);
-int vg_split_mdas(struct cmd_context *cmd, struct volume_group *vg_from,
- struct volume_group *vg_to);
-
-/* Manipulate LVs */
-struct logical_volume *lv_create_empty(struct format_instance *fi,
- const char *name,
- union lvid *lvid,
- uint32_t status,
- alloc_policy_t alloc,
- int import,
- struct volume_group *vg);
-
-/* Reduce the size of an LV by extents */
-int lv_reduce(struct logical_volume *lv, uint32_t extents);
-
-/* Empty an LV prior to deleting it */
-int lv_empty(struct logical_volume *lv);
-
-/* Entry point for all LV extent allocations */
-int lv_extend(struct logical_volume *lv,
- const struct segment_type *segtype,
- uint32_t stripes, uint32_t stripe_size,
- uint32_t mirrors, uint32_t extents,
- struct physical_volume *mirrored_pv, uint32_t mirrored_pe,
- uint32_t status, struct list *allocatable_pvs,
- alloc_policy_t alloc);
-
-/* lv must be part of lv->vg->lvs */
-int lv_remove(struct logical_volume *lv);
/* Manipulate PV structures */
int pv_add(struct volume_group *vg, struct physical_volume *pv);
struct physical_volume *pv_find(struct volume_group *vg, const char *pv_name);
/* Find a PV within a given VG */
-struct pv_list *find_pv_in_vg(struct volume_group *vg, const char *pv_name);
-pv_t *find_pv_in_vg_by_uuid(struct volume_group *vg, struct id *id);
int get_pv_from_vg_by_id(const struct format_type *fmt, const char *vg_name,
const char *vgid, const char *pvid,
struct physical_volume *pv);
-/* Find an LV within a given VG */
-struct lv_list *find_lv_in_vg(struct volume_group *vg, const char *lv_name);
struct lv_list *find_lv_in_vg_by_lvid(struct volume_group *vg,
const union lvid *lvid);
/* FIXME Merge these functions with ones above */
struct physical_volume *find_pv(struct volume_group *vg, struct device *dev);
-struct logical_volume *find_lv(struct volume_group *vg, const char *lv_name);
-struct physical_volume *find_pv_by_name(struct cmd_context *cmd,
- const char *pv_name);
/* Find LV segment containing given LE */
struct lv_segment *find_seg_by_le(struct logical_volume *lv, uint32_t le);
-struct lv_segment *first_seg(struct logical_volume *lv);
/* Find PV segment containing given LE */
struct pv_segment *find_peg_by_pe(struct physical_volume *pv, uint32_t pe);
*/
int lv_split_segment(struct logical_volume *lv, uint32_t le);
-/*
- * Useful functions for managing snapshots.
- */
-int lv_is_origin(const struct logical_volume *lv);
-int lv_is_cow(const struct logical_volume *lv);
-int lv_is_visible(const struct logical_volume *lv);
-
-int pv_is_in_vg(struct volume_group *vg, struct physical_volume *pv);
-
-/* Given a cow LV, return return the snapshot lv_segment that uses it */
-struct lv_segment *find_cow(const struct logical_volume *lv);
-
-/* Given a cow LV, return its origin */
-struct logical_volume *origin_from_cow(const struct logical_volume *lv);
-
-int vg_add_snapshot(struct format_instance *fid, const char *name,
- struct logical_volume *origin, struct logical_volume *cow,
- union lvid *lvid, uint32_t extent_count,
- uint32_t chunk_size);
-
-int vg_remove_snapshot(struct logical_volume *cow);
-
-int vg_check_status(struct volume_group *vg, uint32_t status);
-
/*
* Mirroring functions
*/
-struct alloc_handle;
-uint32_t adjusted_mirror_region_size(uint32_t extent_size, uint32_t extents,
- uint32_t region_size);
-int create_mirror_layers(struct alloc_handle *ah,
- uint32_t first_area,
- uint32_t num_mirrors,
- struct logical_volume *lv,
- const struct segment_type *segtype,
- uint32_t status,
- uint32_t region_size,
- struct logical_volume *log_lv);
int add_mirror_layers(struct alloc_handle *ah,
uint32_t num_mirrors,
uint32_t existing_mirrors,
struct logical_volume *lv,
const struct segment_type *segtype);
-int remove_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
- struct list *removable_pvs, int remove_log);
-int reconfigure_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
- struct list *removable_pvs, int remove_log);
/*
* Given mirror image or mirror log segment, find corresponding mirror segment
*/
struct lv_segment *find_mirror_seg(struct lv_segment *seg);
int fixup_imported_mirrors(struct volume_group *vg);
-int insert_pvmove_mirrors(struct cmd_context *cmd,
- struct logical_volume *lv_mirr,
- struct list *source_pvl,
- struct logical_volume *lv,
- struct list *allocatable_pvs,
- alloc_policy_t alloc,
- struct list *lvs_changed);
-int remove_pvmove_mirrors(struct volume_group *vg,
- struct logical_volume *lv_mirr);
-struct logical_volume *find_pvmove_lv(struct volume_group *vg,
- struct device *dev, uint32_t lv_type);
-struct logical_volume *find_pvmove_lv_from_pvname(struct cmd_context *cmd,
- struct volume_group *vg,
- const char *name,
- uint32_t lv_type);
-const char *get_pvmove_pvname_from_lv(struct logical_volume *lv);
-const char *get_pvmove_pvname_from_lv_mirr(struct logical_volume *lv_mirr);
-float copy_percent(struct logical_volume *lv_mirr);
-struct list *lvs_using_lv(struct cmd_context *cmd, struct volume_group *vg,
- struct logical_volume *lv);
-
-uint32_t find_free_lvnum(struct logical_volume *lv);
-char *generate_lv_name(struct volume_group *vg, const char *format,
- char *buffer, size_t len);
-
/*
* Begin skeleton for external LVM library
*/
struct id pv_id(pv_t *pv);
const struct format_type *pv_format_type(pv_t *pv);
struct id pv_vgid(pv_t *pv);
-struct device *pv_dev(pv_t *pv);
-const char *pv_vg_name(pv_t *pv);
-uint64_t pv_size(pv_t *pv);
-uint32_t pv_status(pv_t *pv);
-uint32_t pv_pe_size(pv_t *pv);
-uint64_t pv_pe_start(pv_t *pv);
-uint32_t pv_pe_count(pv_t *pv);
-uint32_t pv_pe_alloc_count(pv_t *pv);
-
-uint32_t vg_status(vg_t *vg);
pv_t *pv_by_path(struct cmd_context *cmd, const char *pv_name);
int add_pv_to_vg(struct volume_group *vg, const char *pv_name,
git://sourceware.org / lvm2.git / commitdiff