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git://sourceware.org/git/lvm2.git
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4141409eb0
Switch METADATA_FORMAT flag usage to be stored via segtype instead of 'status' flag which appeared to cause major incompatibility troubles. For backward compatiblity segtype flags are still accepted also via 'status' bits which were used from version 2.02.169 so metadata saved by this newer lvm2 version should still work nicely, although new save version will no longer work on this older lvm2 version.
95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _LVM_TEXT_IMPORT_EXPORT_H
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#define _LVM_TEXT_IMPORT_EXPORT_H
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#include "config.h"
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#include "metadata.h"
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#include "lvmcache.h"
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#include <stdio.h>
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/*
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* Constants to identify files this code can parse.
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*/
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#define CONTENTS_FIELD "contents"
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#define CONTENTS_VALUE "Text Format Volume Group"
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#define FORMAT_VERSION_FIELD "version"
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#define FORMAT_VERSION_VALUE 1
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/*
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* VGs, PVs and LVs all have status bitsets, we gather together
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* common code for reading and writing them.
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*/
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enum pv_vg_lv_e {
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PV_FLAGS = 1,
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VG_FLAGS,
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LV_FLAGS,
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};
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#define COMPATIBLE_FLAG 0x01
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#define STATUS_FLAG 0x02
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#define SEGTYPE_FLAG 0x04
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struct text_vg_version_ops {
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int (*check_version) (const struct dm_config_tree * cf);
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struct volume_group *(*read_vg) (struct format_instance * fid,
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const struct dm_config_tree *cf,
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unsigned use_cached_pvs,
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unsigned allow_lvmetad_extensions);
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void (*read_desc) (struct dm_pool * mem, const struct dm_config_tree *cf,
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time_t *when, char **desc);
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int (*read_vgsummary) (const struct format_type *fmt,
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const struct dm_config_tree *cft,
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struct lvmcache_vgsummary *vgsummary);
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};
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struct text_vg_version_ops *text_vg_vsn1_init(void);
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int print_flags(char *buffer, size_t size, enum pv_vg_lv_e type, int mask, uint64_t status);
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int read_flags(uint64_t *status, enum pv_vg_lv_e type, int mask, const struct dm_config_value *cv);
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int print_segtype_lvflags(char *buffer, size_t size, uint64_t status);
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int read_segtype_lvflags(uint64_t *status, char *segtype_scr);
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int text_vg_export_file(struct volume_group *vg, const char *desc, FILE *fp);
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size_t text_vg_export_raw(struct volume_group *vg, const char *desc, char **buf);
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struct volume_group *text_vg_import_file(struct format_instance *fid,
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const char *file,
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time_t *when, char **desc);
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struct volume_group *text_vg_import_fd(struct format_instance *fid,
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const char *file,
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struct cached_vg_fmtdata **vg_fmtdata,
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unsigned *use_previous_vg,
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int single_device,
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struct device *dev,
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off_t offset, uint32_t size,
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off_t offset2, uint32_t size2,
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checksum_fn_t checksum_fn,
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uint32_t checksum,
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time_t *when, char **desc);
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int text_vgsummary_import(const struct format_type *fmt,
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struct device *dev,
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off_t offset, uint32_t size,
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off_t offset2, uint32_t size2,
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checksum_fn_t checksum_fn,
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int checksum_only,
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struct lvmcache_vgsummary *vgsummary);
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#endif
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