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21c401006c
Support lv_rename without directly updating metatata. It can save some metadata commits in some cases, i.e. when LVs are offline.
875 lines
31 KiB
C
875 lines
31 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* This is the representation of LVM metadata that is being adapted
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* for library export.
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*/
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#ifndef _LVM_METADATA_EXPORTED_H
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#define _LVM_METADATA_EXPORTED_H
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#include "uuid.h"
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#include "pv.h"
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#include "vg.h"
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#include "lv.h"
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#include "lvm-percent.h"
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#define MAX_STRIPES 128U
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#define SECTOR_SHIFT 9L
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#define SECTOR_SIZE ( 1L << SECTOR_SHIFT )
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#define STRIPE_SIZE_MIN ( (unsigned) lvm_getpagesize() >> SECTOR_SHIFT) /* PAGESIZE in sectors */
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#define STRIPE_SIZE_MAX ( 512L * 1024L >> SECTOR_SHIFT) /* 512 KB in sectors */
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#define STRIPE_SIZE_LIMIT ((UINT_MAX >> 2) + 1)
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#define MAX_RESTRICTED_LVS 255 /* Used by FMT_RESTRICTED_LVIDS */
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#define MAX_EXTENT_SIZE ((uint32_t) -1)
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/* Layer suffix */
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#define MIRROR_SYNC_LAYER "_mimagetmp"
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/* Various flags */
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/* Note that the bits no longer necessarily correspond to LVM1 disk format */
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#define PARTIAL_VG UINT64_C(0x00000001) /* VG */
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#define EXPORTED_VG UINT64_C(0x00000002) /* VG PV */
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#define RESIZEABLE_VG UINT64_C(0x00000004) /* VG */
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/* May any free extents on this PV be used or must they be left free? */
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#define ALLOCATABLE_PV UINT64_C(0x00000008) /* PV */
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//#define SPINDOWN_LV UINT64_C(0x00000010) /* LV */
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//#define BADBLOCK_ON UINT64_C(0x00000020) /* LV */
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#define VISIBLE_LV UINT64_C(0x00000040) /* LV */
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#define FIXED_MINOR UINT64_C(0x00000080) /* LV */
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/* FIXME Remove when metadata restructuring is completed */
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#define SNAPSHOT UINT64_C(0x00001000) /* LV - internal use only */
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#define PVMOVE UINT64_C(0x00002000) /* VG LV SEG */
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#define LOCKED UINT64_C(0x00004000) /* LV */
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#define MIRRORED UINT64_C(0x00008000) /* LV - internal use only */
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//#define VIRTUAL UINT64_C(0x00010000) /* LV - internal use only */
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#define MIRROR_LOG UINT64_C(0x00020000) /* LV */
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#define MIRROR_IMAGE UINT64_C(0x00040000) /* LV */
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#define LV_NOTSYNCED UINT64_C(0x00080000) /* LV */
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#define LV_REBUILD UINT64_C(0x00100000) /* LV */
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//#define PRECOMMITTED UINT64_C(0x00200000) /* VG - internal use only */
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#define CONVERTING UINT64_C(0x00400000) /* LV */
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#define MISSING_PV UINT64_C(0x00800000) /* PV */
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#define PARTIAL_LV UINT64_C(0x01000000) /* LV - derived flag, not
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written out in metadata*/
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//#define POSTORDER_FLAG UINT64_C(0x02000000) /* Not real flags, reserved for
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//#define POSTORDER_OPEN_FLAG UINT64_C(0x04000000) temporary use inside vg_read_internal. */
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//#define VIRTUAL_ORIGIN UINT64_C(0x08000000) /* LV - internal use only */
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#define MERGING UINT64_C(0x10000000) /* LV SEG */
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#define REPLICATOR UINT64_C(0x20000000) /* LV -internal use only for replicator */
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#define REPLICATOR_LOG UINT64_C(0x40000000) /* LV -internal use only for replicator-dev */
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#define UNLABELLED_PV UINT64_C(0x80000000) /* PV -this PV had no label written yet */
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#define RAID UINT64_C(0x0000000100000000) /* LV */
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#define RAID_META UINT64_C(0x0000000200000000) /* LV */
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#define RAID_IMAGE UINT64_C(0x0000000400000000) /* LV */
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#define THIN_VOLUME UINT64_C(0x0000001000000000) /* LV */
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#define THIN_POOL UINT64_C(0x0000002000000000) /* LV */
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#define THIN_POOL_DATA UINT64_C(0x0000004000000000) /* LV */
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#define THIN_POOL_METADATA UINT64_C(0x0000008000000000) /* LV */
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#define LVM_READ UINT64_C(0x00000100) /* LV, VG */
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#define LVM_WRITE UINT64_C(0x00000200) /* LV, VG */
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#define CLUSTERED UINT64_C(0x00000400) /* VG */
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//#define SHARED UINT64_C(0x00000800) /* VG */
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/* Format features flags */
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#define FMT_SEGMENTS 0x00000001U /* Arbitrary segment params? */
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#define FMT_MDAS 0x00000002U /* Proper metadata areas? */
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#define FMT_TAGS 0x00000004U /* Tagging? */
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#define FMT_UNLIMITED_VOLS 0x00000008U /* Unlimited PVs/LVs? */
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#define FMT_RESTRICTED_LVIDS 0x00000010U /* LVID <= 255 */
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#define FMT_ORPHAN_ALLOCATABLE 0x00000020U /* Orphan PV allocatable? */
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//#define FMT_PRECOMMIT 0x00000040U /* Supports pre-commit? */
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#define FMT_RESIZE_PV 0x00000080U /* Supports pvresize? */
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#define FMT_UNLIMITED_STRIPESIZE 0x00000100U /* Unlimited stripe size? */
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#define FMT_RESTRICTED_READAHEAD 0x00000200U /* Readahead restricted to 2-120? */
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/* Mirror conversion type flags */
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#define MIRROR_BY_SEG 0x00000001U /* segment-by-segment mirror */
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#define MIRROR_BY_LV 0x00000002U /* mirror using whole mimage LVs */
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#define MIRROR_SKIP_INIT_SYNC 0x00000010U /* skip initial sync */
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/* vg_read and vg_read_for_update flags */
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#define READ_ALLOW_INCONSISTENT 0x00010000U
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#define READ_ALLOW_EXPORTED 0x00020000U
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#define READ_WITHOUT_LOCK 0x00040000U
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/* A meta-flag, useful with toollib for_each_* functions. */
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#define READ_FOR_UPDATE 0x00100000U
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/* vg's "read_status" field */
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#define FAILED_INCONSISTENT 0x00000001U
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#define FAILED_LOCKING 0x00000002U
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#define FAILED_NOTFOUND 0x00000004U
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#define FAILED_READ_ONLY 0x00000008U
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#define FAILED_EXPORTED 0x00000010U
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#define FAILED_RESIZEABLE 0x00000020U
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#define FAILED_CLUSTERED 0x00000040U
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#define FAILED_ALLOCATION 0x00000080U
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#define FAILED_EXIST 0x00000100U
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#define SUCCESS 0x00000000U
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#define VGMETADATACOPIES_ALL UINT32_MAX
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#define VGMETADATACOPIES_UNMANAGED 0
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#define lv_is_thin_volume(lv) ((lv)->status & THIN_VOLUME ? 1 : 0)
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#define lv_is_thin_pool(lv) ((lv)->status & THIN_POOL ? 1 : 0)
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#define lv_is_used_thin_pool(lv) (lv_is_thin_pool(lv) && !dm_list_empty(&(lv)->segs_using_this_lv))
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#define lv_is_thin_pool_data(lv) ((lv)->status & THIN_POOL_DATA ? 1 : 0)
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#define lv_is_thin_pool_metadata(lv) ((lv)->status & THIN_POOL_METADATA ? 1 : 0)
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#define lv_is_mirrored(lv) ((lv)->status & MIRRORED ? 1 : 0)
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#define lv_is_rlog(lv) ((lv)->status & REPLICATOR_LOG ? 1 : 0)
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#define lv_is_thin_type(lv) ((lv)->status & (THIN_POOL | THIN_VOLUME | THIN_POOL_DATA | THIN_POOL_METADATA) ? 1 : 0)
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#define lv_is_mirror_type(lv) ((lv)->status & (MIRROR_LOG | MIRROR_IMAGE | MIRRORED | PVMOVE) ? 1 : 0)
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#define lv_is_raid_type(lv) ((lv)->status & (RAID | RAID_IMAGE | RAID_META))
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#define lv_is_virtual(lv) ((lv)->status & VIRTUAL)
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/* Ordered list - see lv_manip.c */
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typedef enum {
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AREA_UNASSIGNED,
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AREA_PV,
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AREA_LV
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} area_type_t;
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/*
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* Whether or not to force an operation.
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*/
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typedef enum {
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PROMPT = 0, /* Issue yes/no prompt to confirm operation */
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DONT_PROMPT = 1, /* Skip yes/no prompt */
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DONT_PROMPT_OVERRIDE = 2 /* Skip prompt + override a second condition */
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} force_t;
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typedef enum {
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THIN_DISCARDS_IGNORE,
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THIN_DISCARDS_NO_PASSDOWN,
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THIN_DISCARDS_PASSDOWN,
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} thin_discards_t;
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struct cmd_context;
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struct format_handler;
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struct labeller;
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struct format_type {
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struct dm_list list;
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struct cmd_context *cmd;
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struct format_handler *ops;
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struct dm_list mda_ops; /* List of permissible mda ops. */
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struct labeller *labeller;
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const char *name;
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const char *alias;
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const char *orphan_vg_name;
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struct volume_group *orphan_vg; /* Only one ever exists. */
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uint32_t features;
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void *library;
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void *private;
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};
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struct pv_segment {
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struct dm_list list; /* Member of pv->segments: ordered list
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* covering entire data area on this PV */
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struct physical_volume *pv;
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uint32_t pe;
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uint32_t len;
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struct lv_segment *lvseg; /* NULL if free space */
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uint32_t lv_area; /* Index to area in LV segment */
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};
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#define pvseg_is_allocated(pvseg) ((pvseg)->lvseg)
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/*
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* Properties of each format instance type.
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* The primary role of the format_instance is to temporarily store metadata
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* area information we are working with.
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*/
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/* Include any existing PV ("on-disk") mdas during format_instance initialisation. */
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#define FMT_INSTANCE_MDAS 0x00000002U
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/*
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* Include any auxiliary mdas during format_instance intialisation.
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* Currently, this includes metadata areas as defined by
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* metadata/dirs and metadata/raws setting.
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*/
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#define FMT_INSTANCE_AUX_MDAS 0x00000004U
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/*
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* Include any other format-specific mdas during format_instance initialisation.
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* For example metadata areas used during backup/restore/archive handling.
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*/
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#define FMT_INSTANCE_PRIVATE_MDAS 0x00000008U
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struct format_instance {
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unsigned ref_count; /* Refs to this fid from VG and PV structs */
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struct dm_pool *mem;
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uint32_t type;
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const struct format_type *fmt;
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/*
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* Each mda in a vg is on exactly one of the below lists.
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* MDAs on the 'in_use' list will be read from / written to
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* disk, while MDAs on the 'ignored' list will not be read
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* or written to.
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*/
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/* FIXME: Try to use the index only. Remove these lists. */
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struct dm_list metadata_areas_in_use;
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struct dm_list metadata_areas_ignored;
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struct dm_hash_table *metadata_areas_index;
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void *private;
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};
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/* There will be one area for each stripe */
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struct lv_segment_area {
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area_type_t type;
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union {
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struct {
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struct pv_segment *pvseg;
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} pv;
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struct {
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struct logical_volume *lv;
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uint32_t le;
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} lv;
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} u;
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};
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struct lv_thin_message {
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struct dm_list list; /* Chained list of messages */
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dm_thin_message_t type; /* Use dm thin message datatype */
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union {
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struct logical_volume *lv; /* For: create_thin, create_snap, trim */
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uint32_t delete_id; /* For delete, needs device_id */
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} u;
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};
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struct segment_type;
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/* List with vg_name, vgid and flags */
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struct cmd_vg {
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struct dm_list list;
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const char *vg_name;
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const char *vgid;
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uint32_t flags;
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struct volume_group *vg;
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};
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/* ++ Replicator datatypes */
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typedef enum {
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REPLICATOR_STATE_PASSIVE,
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REPLICATOR_STATE_ACTIVE,
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NUM_REPLICATOR_STATE
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} replicator_state_t;
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struct replicator_site {
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struct dm_list list; /* Chained list of sites */
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struct dm_list rdevices; /* Device list */
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struct logical_volume *replicator; /* Reference to replicator */
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const char *name; /* Site name */
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const char *vg_name; /* VG name */
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struct volume_group *vg; /* resolved vg (activate/deactive) */
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unsigned site_index;
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replicator_state_t state; /* Active or pasive state of site */
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dm_replicator_mode_t op_mode; /* Operation mode sync or async fail|warn|drop|stall */
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uint64_t fall_behind_data; /* Bytes */
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uint32_t fall_behind_ios; /* IO operations */
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uint32_t fall_behind_timeout; /* Seconds */
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};
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struct replicator_device {
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struct dm_list list; /* Chained list of devices from same site */
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struct lv_segment *replicator_dev; /* Reference to replicator-dev segment */
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struct replicator_site *rsite; /* Reference to site parameters */
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uint64_t device_index;
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const char *name; /* Device LV name */
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struct logical_volume *lv; /* LV from replicator site's VG */
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struct logical_volume *slog; /* Synclog lv from VG */
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const char *slog_name; /* Debug - specify size of core synclog */
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};
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/* -- Replicator datatypes */
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struct lv_segment {
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struct dm_list list;
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struct logical_volume *lv;
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const struct segment_type *segtype;
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uint32_t le;
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uint32_t len;
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uint64_t status;
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/* FIXME Fields depend on segment type */
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uint32_t stripe_size; /* For stripe and RAID - in sectors */
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uint32_t area_count;
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uint32_t area_len;
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uint32_t chunk_size; /* For snapshots/thin_pool. In sectors. */
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/* For thin_pool, 128..2097152. */
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struct logical_volume *origin; /* snap and thin */
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struct logical_volume *cow;
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struct dm_list origin_list;
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uint32_t region_size; /* For mirrors, replicators - in sectors */
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uint32_t extents_copied;
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struct logical_volume *log_lv;
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struct lv_segment *pvmove_source_seg;
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void *segtype_private;
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struct dm_list tags;
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struct lv_segment_area *areas;
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struct lv_segment_area *meta_areas; /* For RAID */
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struct logical_volume *metadata_lv; /* For thin_pool */
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uint64_t transaction_id; /* For thin_pool, thin */
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uint64_t low_water_mark; /* For thin_pool */
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unsigned zero_new_blocks; /* For thin_pool */
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thin_discards_t discards; /* For thin_pool */
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struct dm_list thin_messages; /* For thin_pool */
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struct logical_volume *pool_lv; /* For thin */
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uint32_t device_id; /* For thin, 24bit */
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struct logical_volume *replicator;/* For replicator-devs - link to replicator LV */
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struct logical_volume *rlog_lv; /* For replicators */
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const char *rlog_type; /* For replicators */
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uint64_t rdevice_index_highest; /* For replicators */
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unsigned rsite_index_highest; /* For replicators */
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};
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#define seg_type(seg, s) (seg)->areas[(s)].type
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#define seg_pv(seg, s) (seg)->areas[(s)].u.pv.pvseg->pv
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#define seg_lv(seg, s) (seg)->areas[(s)].u.lv.lv
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#define seg_metalv(seg, s) (seg)->meta_areas[(s)].u.lv.lv
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#define seg_metatype(seg, s) (seg)->meta_areas[(s)].type
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struct pe_range {
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struct dm_list list;
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uint32_t start; /* PEs */
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uint32_t count; /* PEs */
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};
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struct pv_list {
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struct dm_list list;
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struct physical_volume *pv;
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struct dm_list *mdas; /* Metadata areas */
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struct dm_list *pe_ranges; /* Ranges of PEs e.g. for allocation */
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};
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struct lv_list {
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struct dm_list list;
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struct logical_volume *lv;
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};
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struct pvcreate_params {
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int zero;
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uint64_t size;
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uint64_t data_alignment;
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uint64_t data_alignment_offset;
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int pvmetadatacopies;
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uint64_t pvmetadatasize;
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int64_t labelsector;
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struct id id; /* FIXME: redundant */
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struct id *idp; /* 0 if no --uuid option */
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uint64_t pe_start;
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uint32_t extent_count;
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uint32_t extent_size;
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const char *restorefile; /* 0 if no --restorefile option */
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force_t force;
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unsigned yes;
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unsigned metadataignore;
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};
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struct physical_volume *pvcreate_single(struct cmd_context *cmd,
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const char *pv_name,
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struct pvcreate_params *pp,
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int write_now);
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void pvcreate_params_set_defaults(struct pvcreate_params *pp);
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/*
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* Utility functions
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*/
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int vg_write(struct volume_group *vg);
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int vg_commit(struct volume_group *vg);
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void vg_revert(struct volume_group *vg);
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struct volume_group *vg_read_internal(struct cmd_context *cmd, const char *vg_name,
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const char *vgid, int warnings, int *consistent);
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struct physical_volume *pv_read(struct cmd_context *cmd, const char *pv_name,
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int warnings,
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int scan_label_only);
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struct dm_list *get_pvs(struct cmd_context *cmd);
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/*
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* Add/remove LV to/from volume group
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*/
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int link_lv_to_vg(struct volume_group *vg, struct logical_volume *lv);
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int unlink_lv_from_vg(struct logical_volume *lv);
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void lv_set_visible(struct logical_volume *lv);
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void lv_set_hidden(struct logical_volume *lv);
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struct dm_list *get_vgnames(struct cmd_context *cmd, int include_internal);
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struct dm_list *get_vgids(struct cmd_context *cmd, int include_internal);
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int scan_vgs_for_pvs(struct cmd_context *cmd, int warnings);
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int pv_write(struct cmd_context *cmd, struct physical_volume *pv, int allow_non_orphan);
|
|
int move_pv(struct volume_group *vg_from, struct volume_group *vg_to,
|
|
const char *pv_name);
|
|
int move_pvs_used_by_lv(struct volume_group *vg_from,
|
|
struct volume_group *vg_to,
|
|
const char *lv_name);
|
|
int is_global_vg(const char *vg_name);
|
|
int is_orphan_vg(const char *vg_name);
|
|
int is_real_vg(const char *vg_name);
|
|
int vg_missing_pv_count(const struct volume_group *vg);
|
|
int vgs_are_compatible(struct cmd_context *cmd,
|
|
struct volume_group *vg_from,
|
|
struct volume_group *vg_to);
|
|
uint32_t vg_lock_newname(struct cmd_context *cmd, const char *vgname);
|
|
|
|
/*
|
|
* Return a handle to VG metadata.
|
|
*/
|
|
struct volume_group *vg_read(struct cmd_context *cmd, const char *vg_name,
|
|
const char *vgid, uint32_t flags);
|
|
struct volume_group *vg_read_for_update(struct cmd_context *cmd, const char *vg_name,
|
|
const char *vgid, uint32_t flags);
|
|
|
|
/*
|
|
* Test validity of a VG handle.
|
|
*/
|
|
uint32_t vg_read_error(struct volume_group *vg_handle);
|
|
|
|
/* pe_start and pe_end relate to any existing data so that new metadata
|
|
* areas can avoid overlap */
|
|
struct physical_volume *pv_create(const struct cmd_context *cmd,
|
|
struct device *dev,
|
|
struct id *id,
|
|
uint64_t size,
|
|
unsigned long data_alignment,
|
|
unsigned long data_alignment_offset,
|
|
uint64_t pe_start,
|
|
uint32_t existing_extent_count,
|
|
uint32_t existing_extent_size,
|
|
uint64_t label_sector,
|
|
unsigned pvmetadatacopies,
|
|
uint64_t pvmetadatasize,
|
|
unsigned metadataignore);
|
|
int pv_resize(struct physical_volume *pv, struct volume_group *vg,
|
|
uint64_t size);
|
|
int pv_analyze(struct cmd_context *cmd, const char *pv_name,
|
|
uint64_t label_sector);
|
|
|
|
/* FIXME: move internal to library */
|
|
uint32_t pv_list_extents_free(const struct dm_list *pvh);
|
|
|
|
struct volume_group *vg_create(struct cmd_context *cmd, const char *vg_name);
|
|
int vg_remove_mdas(struct volume_group *vg);
|
|
int vg_remove_check(struct volume_group *vg);
|
|
void vg_remove_pvs(struct volume_group *vg);
|
|
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, const char *const *pv_names,
|
|
struct pvcreate_params *pp);
|
|
int vg_reduce(struct volume_group *vg, const char *pv_name);
|
|
int vg_change_tag(struct volume_group *vg, const char *tag, int add_tag);
|
|
int vg_split_mdas(struct cmd_context *cmd, struct volume_group *vg_from,
|
|
struct volume_group *vg_to);
|
|
/* FIXME: Investigate refactoring these functions to take a pv ISO pv_list */
|
|
void add_pvl_to_vgs(struct volume_group *vg, struct pv_list *pvl);
|
|
void del_pvl_from_vgs(struct volume_group *vg, struct pv_list *pvl);
|
|
|
|
/* FIXME: refactor / unexport when lvremove liblvm refactoring dones */
|
|
int remove_lvs_in_vg(struct cmd_context *cmd,
|
|
struct volume_group *vg,
|
|
force_t force);
|
|
|
|
/*
|
|
* free_pv_fid() must be called on every struct physical_volume allocated
|
|
* by pv_create, pv_read, find_pv_by_name or pv_by_path to free it when
|
|
* no longer required.
|
|
*/
|
|
void free_pv_fid(struct physical_volume *pv);
|
|
|
|
/* Manipulate LVs */
|
|
struct logical_volume *lv_create_empty(const char *name,
|
|
union lvid *lvid,
|
|
uint64_t status,
|
|
alloc_policy_t alloc,
|
|
struct volume_group *vg);
|
|
|
|
/* Write out LV contents */
|
|
int set_lv(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint64_t sectors, int value);
|
|
|
|
int lv_change_tag(struct logical_volume *lv, const char *tag, int add_tag);
|
|
|
|
/* 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);
|
|
|
|
/* Empty an LV and add error segment */
|
|
int replace_lv_with_error_segment(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 region_size,
|
|
uint32_t extents, const char *thin_pool_name,
|
|
struct dm_list *allocatable_pvs, alloc_policy_t alloc);
|
|
|
|
/* lv must be part of lv->vg->lvs */
|
|
int lv_remove(struct logical_volume *lv);
|
|
|
|
int lv_remove_single(struct cmd_context *cmd, struct logical_volume *lv,
|
|
force_t force);
|
|
|
|
int lv_remove_with_dependencies(struct cmd_context *cmd, struct logical_volume *lv,
|
|
force_t force, unsigned level);
|
|
|
|
int lv_rename(struct cmd_context *cmd, struct logical_volume *lv,
|
|
const char *new_name);
|
|
int lv_rename_update(struct cmd_context *cmd, struct logical_volume *lv,
|
|
const char *new_name, int update_mda);
|
|
|
|
uint64_t extents_from_size(struct cmd_context *cmd, uint64_t size,
|
|
uint32_t extent_size);
|
|
|
|
int update_pool_lv(struct logical_volume *lv, int activate);
|
|
int get_pool_discards(const char *str, thin_discards_t *discards);
|
|
const char *get_pool_discards_name(thin_discards_t discards);
|
|
|
|
/*
|
|
* Activation options
|
|
*/
|
|
typedef enum activation_change {
|
|
CHANGE_AY = 0, /* activate */
|
|
CHANGE_AN = 1, /* deactivate */
|
|
CHANGE_AE = 2, /* activate exclusively */
|
|
CHANGE_ALY = 3, /* activate locally */
|
|
CHANGE_ALN = 4, /* deactivate locally */
|
|
CHANGE_AAY = 5 /* automatic activation */
|
|
} activation_change_t;
|
|
|
|
/* FIXME: refactor and reduce the size of this struct! */
|
|
struct lvcreate_params {
|
|
/* flags */
|
|
int snapshot; /* snap */
|
|
int thin; /* thin */
|
|
int create_thin_pool; /* thin */
|
|
int zero; /* all */
|
|
int major; /* all */
|
|
int minor; /* all */
|
|
int log_count; /* mirror */
|
|
int nosync; /* mirror */
|
|
activation_change_t activate; /* non-snapshot, non-mirror */
|
|
thin_discards_t discards; /* thin */
|
|
|
|
const char *origin; /* snap */
|
|
const char *pool; /* thin */
|
|
const char *vg_name; /* all */
|
|
const char *lv_name; /* all */
|
|
|
|
uint32_t stripes; /* striped */
|
|
uint32_t stripe_size; /* striped */
|
|
uint32_t chunk_size; /* snapshot */
|
|
uint32_t region_size; /* mirror */
|
|
|
|
uint32_t mirrors; /* mirror */
|
|
|
|
const struct segment_type *segtype; /* all */
|
|
|
|
/* size */
|
|
uint32_t extents; /* all */
|
|
uint32_t voriginextents; /* snapshot */
|
|
uint64_t voriginsize; /* snapshot */
|
|
uint32_t poolmetadataextents; /* thin pool */
|
|
uint64_t poolmetadatasize; /* thin pool */
|
|
struct dm_list *pvh; /* all */
|
|
|
|
uint32_t permission; /* all */
|
|
uint32_t read_ahead; /* all */
|
|
alloc_policy_t alloc; /* all */
|
|
|
|
struct dm_list tags; /* all */
|
|
};
|
|
|
|
int lv_create_single(struct volume_group *vg,
|
|
struct lvcreate_params *lp);
|
|
|
|
/*
|
|
* Functions for layer manipulation
|
|
*/
|
|
int insert_layer_for_segments_on_pv(struct cmd_context *cmd,
|
|
struct logical_volume *lv_where,
|
|
struct logical_volume *layer_lv,
|
|
uint64_t status,
|
|
struct pv_list *pv,
|
|
struct dm_list *lvs_changed);
|
|
int remove_layers_for_segments(struct cmd_context *cmd,
|
|
struct logical_volume *lv,
|
|
struct logical_volume *layer_lv,
|
|
uint64_t status_mask, struct dm_list *lvs_changed);
|
|
int remove_layers_for_segments_all(struct cmd_context *cmd,
|
|
struct logical_volume *layer_lv,
|
|
uint64_t status_mask,
|
|
struct dm_list *lvs_changed);
|
|
int split_parent_segments_for_layer(struct cmd_context *cmd,
|
|
struct logical_volume *layer_lv);
|
|
int remove_layer_from_lv(struct logical_volume *lv,
|
|
struct logical_volume *layer_lv);
|
|
struct logical_volume *insert_layer_for_lv(struct cmd_context *cmd,
|
|
struct logical_volume *lv_where,
|
|
uint64_t status,
|
|
const char *layer_suffix);
|
|
|
|
/* Find a PV within a given VG */
|
|
struct pv_list *find_pv_in_vg(const struct volume_group *vg,
|
|
const char *pv_name);
|
|
struct pv_list *find_pv_in_vg_by_uuid(const struct volume_group *vg,
|
|
const struct id *id);
|
|
|
|
/* Find an LV within a given VG */
|
|
struct lv_list *find_lv_in_vg(const struct volume_group *vg,
|
|
const char *lv_name);
|
|
|
|
/* FIXME Merge these functions with ones above */
|
|
struct logical_volume *find_lv(const struct volume_group *vg,
|
|
const char *lv_name);
|
|
struct physical_volume *find_pv_by_name(struct cmd_context *cmd,
|
|
const char *pv_name);
|
|
|
|
const char *find_vgname_from_pvname(struct cmd_context *cmd,
|
|
const char *pvname);
|
|
const char *find_vgname_from_pvid(struct cmd_context *cmd,
|
|
const char *pvid);
|
|
/* Find LV segment containing given LE */
|
|
struct lv_segment *first_seg(const struct logical_volume *lv);
|
|
struct lv_segment *last_seg(const struct logical_volume *lv);
|
|
|
|
|
|
/*
|
|
* Useful functions for managing snapshots.
|
|
*/
|
|
int lv_is_origin(const struct logical_volume *lv);
|
|
int lv_is_virtual_origin(const struct logical_volume *lv);
|
|
int lv_is_cow(const struct logical_volume *lv);
|
|
int lv_is_merging_origin(const struct logical_volume *origin);
|
|
int lv_is_merging_cow(const struct logical_volume *snapshot);
|
|
|
|
/* Test if given LV is visible from user's perspective */
|
|
int lv_is_visible(const struct logical_volume *lv);
|
|
|
|
int pv_is_in_vg(struct volume_group *vg, struct physical_volume *pv);
|
|
|
|
struct lv_segment *find_merging_cow(const struct logical_volume *origin);
|
|
|
|
/* 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);
|
|
|
|
void init_snapshot_seg(struct lv_segment *seg, struct logical_volume *origin,
|
|
struct logical_volume *cow, uint32_t chunk_size, int merge);
|
|
|
|
void init_snapshot_merge(struct lv_segment *cow_seg, struct logical_volume *origin);
|
|
|
|
void clear_snapshot_merge(struct logical_volume *origin);
|
|
|
|
int vg_add_snapshot(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(const struct volume_group *vg, uint64_t status);
|
|
|
|
|
|
/*
|
|
* Check if the VG reached maximal LVs count (if set)
|
|
*/
|
|
int vg_max_lv_reached(struct volume_group *vg);
|
|
|
|
/*
|
|
* Mirroring functions
|
|
*/
|
|
struct lv_segment *find_mirror_seg(struct lv_segment *seg);
|
|
int lv_add_mirrors(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint32_t mirrors, uint32_t stripes, uint32_t stripe_size,
|
|
uint32_t region_size, uint32_t log_count,
|
|
struct dm_list *pvs, alloc_policy_t alloc, uint32_t flags);
|
|
int lv_split_mirror_images(struct logical_volume *lv, const char *split_lv_name,
|
|
uint32_t split_count, struct dm_list *removable_pvs);
|
|
int lv_remove_mirrors(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint32_t mirrors, uint32_t log_count,
|
|
int (*is_removable)(struct logical_volume *, void *),
|
|
void *removable_baton, uint64_t status_mask);
|
|
|
|
int is_temporary_mirror_layer(const struct logical_volume *lv);
|
|
struct logical_volume * find_temporary_mirror(const struct logical_volume *lv);
|
|
uint32_t lv_mirror_count(const struct logical_volume *lv);
|
|
uint32_t adjusted_mirror_region_size(uint32_t extent_size, uint32_t extents,
|
|
uint32_t region_size);
|
|
int remove_mirrors_from_segments(struct logical_volume *lv,
|
|
uint32_t new_mirrors, uint64_t status_mask);
|
|
int add_mirrors_to_segments(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint32_t mirrors, uint32_t region_size,
|
|
struct dm_list *allocatable_pvs, alloc_policy_t alloc);
|
|
|
|
int remove_mirror_images(struct logical_volume *lv, uint32_t num_mirrors,
|
|
int (*is_removable)(struct logical_volume *, void *),
|
|
void *removable_baton, unsigned remove_log);
|
|
int add_mirror_images(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint32_t mirrors, uint32_t stripes, uint32_t stripe_size, uint32_t region_size,
|
|
struct dm_list *allocatable_pvs, alloc_policy_t alloc,
|
|
uint32_t log_count);
|
|
struct logical_volume *detach_mirror_log(struct lv_segment *seg);
|
|
int attach_mirror_log(struct lv_segment *seg, struct logical_volume *lv);
|
|
int remove_mirror_log(struct cmd_context *cmd, struct logical_volume *lv,
|
|
struct dm_list *removable_pvs, int force);
|
|
int add_mirror_log(struct cmd_context *cmd, struct logical_volume *lv,
|
|
uint32_t log_count, uint32_t region_size,
|
|
struct dm_list *allocatable_pvs, alloc_policy_t alloc);
|
|
|
|
#if 0
|
|
/* FIXME: reconfigure_mirror_images: remove this code? */
|
|
int reconfigure_mirror_images(struct lv_segment *mirrored_seg, uint32_t num_mirrors,
|
|
struct dm_list *removable_pvs, unsigned remove_log);
|
|
#endif
|
|
int collapse_mirrored_lv(struct logical_volume *lv);
|
|
int shift_mirror_images(struct lv_segment *mirrored_seg, unsigned mimage);
|
|
|
|
/* ++ metadata/replicator_manip.c */
|
|
int replicator_add_replicator_dev(struct logical_volume *replicator_lv,
|
|
struct lv_segment *rdev_seg);
|
|
struct logical_volume *replicator_remove_replicator_dev(struct lv_segment *rdev_seg);
|
|
int replicator_add_rlog(struct lv_segment *replicator_seg, struct logical_volume *rlog_lv);
|
|
struct logical_volume *replicator_remove_rlog(struct lv_segment *replicator_seg);
|
|
|
|
int replicator_dev_add_slog(struct replicator_device *rdev, struct logical_volume *slog_lv);
|
|
struct logical_volume *replicator_dev_remove_slog(struct replicator_device *rdev);
|
|
int replicator_dev_add_rimage(struct replicator_device *rdev, struct logical_volume *lv);
|
|
struct logical_volume *replicator_dev_remove_rimage(struct replicator_device *rdev);
|
|
|
|
int lv_is_active_replicator_dev(const struct logical_volume *lv);
|
|
int lv_is_replicator(const struct logical_volume *lv);
|
|
int lv_is_replicator_dev(const struct logical_volume *lv);
|
|
int lv_is_rimage(const struct logical_volume *lv);
|
|
int lv_is_slog(const struct logical_volume *lv);
|
|
struct logical_volume *first_replicator_dev(const struct logical_volume *lv);
|
|
/* -- metadata/replicator_manip.c */
|
|
|
|
/* ++ metadata/raid_manip.c */
|
|
int lv_is_raid_with_tracking(const struct logical_volume *lv);
|
|
uint32_t lv_raid_image_count(const struct logical_volume *lv);
|
|
int lv_raid_change_image_count(struct logical_volume *lv,
|
|
uint32_t new_count, struct dm_list *pvs);
|
|
int lv_raid_split(struct logical_volume *lv, const char *split_name,
|
|
uint32_t new_count, struct dm_list *splittable_pvs);
|
|
int lv_raid_split_and_track(struct logical_volume *lv,
|
|
struct dm_list *splittable_pvs);
|
|
int lv_raid_merge(struct logical_volume *lv);
|
|
int lv_raid_reshape(struct logical_volume *lv,
|
|
const struct segment_type *new_segtype);
|
|
int lv_raid_replace(struct logical_volume *lv, struct dm_list *remove_pvs,
|
|
struct dm_list *allocate_pvs);
|
|
|
|
/* -- metadata/raid_manip.c */
|
|
|
|
struct cmd_vg *cmd_vg_add(struct dm_pool *mem, struct dm_list *cmd_vgs,
|
|
const char *vg_name, const char *vgid,
|
|
uint32_t flags);
|
|
struct cmd_vg *cmd_vg_lookup(struct dm_list *cmd_vgs,
|
|
const char *vg_name, const char *vgid);
|
|
int cmd_vg_read(struct cmd_context *cmd, struct dm_list *cmd_vgs);
|
|
void free_cmd_vgs(struct dm_list *cmd_vgs);
|
|
|
|
int find_replicator_vgs(struct logical_volume *lv);
|
|
|
|
int lv_read_replicator_vgs(struct logical_volume *lv);
|
|
void lv_release_replicator_vgs(struct logical_volume *lv);
|
|
|
|
struct logical_volume *find_pvmove_lv(struct volume_group *vg,
|
|
struct device *dev, uint64_t lv_type);
|
|
struct logical_volume *find_pvmove_lv_from_pvname(struct cmd_context *cmd,
|
|
struct volume_group *vg,
|
|
const char *name,
|
|
const char *uuid,
|
|
uint64_t lv_type);
|
|
struct logical_volume *find_pvmove_lv_in_lv(struct logical_volume *lv);
|
|
const char *get_pvmove_pvname_from_lv(struct logical_volume *lv);
|
|
const char *get_pvmove_pvname_from_lv_mirr(struct logical_volume *lv_mirr);
|
|
percent_t copy_percent(const struct logical_volume *lv_mirr);
|
|
struct dm_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
|
|
*/
|
|
int pv_change_metadataignore(struct physical_volume *pv, uint32_t mda_ignore);
|
|
|
|
|
|
int vg_check_write_mode(struct volume_group *vg);
|
|
#define vg_is_clustered(vg) (vg_status((vg)) & CLUSTERED)
|
|
#define vg_is_exported(vg) (vg_status((vg)) & EXPORTED_VG)
|
|
#define vg_is_resizeable(vg) (vg_status((vg)) & RESIZEABLE_VG)
|
|
|
|
int lv_has_unknown_segments(const struct logical_volume *lv);
|
|
int vg_has_unknown_segments(const struct volume_group *vg);
|
|
|
|
int vg_mark_partial_lvs(struct volume_group *vg, int clear);
|
|
|
|
struct vgcreate_params {
|
|
const char *vg_name;
|
|
uint32_t extent_size;
|
|
size_t max_pv;
|
|
size_t max_lv;
|
|
alloc_policy_t alloc;
|
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int clustered; /* FIXME: put this into a 'status' variable instead? */
|
|
uint32_t vgmetadatacopies;
|
|
};
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|
|
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int vgcreate_params_validate(struct cmd_context *cmd,
|
|
struct vgcreate_params *vp);
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|
|
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int validate_vg_rename_params(struct cmd_context *cmd,
|
|
const char *vg_name_old,
|
|
const char *vg_name_new);
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#endif
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