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67a1b03791
Block Cloning allows to manually clone a file (or a subset of its blocks) into another (or the same) file by just creating additional references to the data blocks without copying the data itself. Those references are kept in the Block Reference Tables (BRTs). The whole design of block cloning is documented in module/zfs/brt.c. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Christian Schwarz <christian.schwarz@nutanix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Rich Ercolani <rincebrain@gmail.com> Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net> Closes #13392
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2011, 2018 by Delphix. All rights reserved.
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* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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* Copyright (c) 2017, Intel Corporation.
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*/
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#ifndef _ZFEATURE_COMMON_H
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#define _ZFEATURE_COMMON_H extern __attribute__((visibility("default")))
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#include <sys/fs/zfs.h>
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#include <sys/inttypes.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct zfeature_info;
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typedef enum spa_feature {
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SPA_FEATURE_NONE = -1,
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SPA_FEATURE_ASYNC_DESTROY,
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SPA_FEATURE_EMPTY_BPOBJ,
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SPA_FEATURE_LZ4_COMPRESS,
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SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
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SPA_FEATURE_SPACEMAP_HISTOGRAM,
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SPA_FEATURE_ENABLED_TXG,
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SPA_FEATURE_HOLE_BIRTH,
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SPA_FEATURE_EXTENSIBLE_DATASET,
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SPA_FEATURE_EMBEDDED_DATA,
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SPA_FEATURE_BOOKMARKS,
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SPA_FEATURE_FS_SS_LIMIT,
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SPA_FEATURE_LARGE_BLOCKS,
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SPA_FEATURE_LARGE_DNODE,
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SPA_FEATURE_SHA512,
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SPA_FEATURE_SKEIN,
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SPA_FEATURE_EDONR,
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SPA_FEATURE_USEROBJ_ACCOUNTING,
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SPA_FEATURE_ENCRYPTION,
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SPA_FEATURE_PROJECT_QUOTA,
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SPA_FEATURE_DEVICE_REMOVAL,
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SPA_FEATURE_OBSOLETE_COUNTS,
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SPA_FEATURE_POOL_CHECKPOINT,
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SPA_FEATURE_SPACEMAP_V2,
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SPA_FEATURE_ALLOCATION_CLASSES,
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SPA_FEATURE_RESILVER_DEFER,
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SPA_FEATURE_BOOKMARK_V2,
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SPA_FEATURE_REDACTION_BOOKMARKS,
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SPA_FEATURE_REDACTED_DATASETS,
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SPA_FEATURE_BOOKMARK_WRITTEN,
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SPA_FEATURE_LOG_SPACEMAP,
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SPA_FEATURE_LIVELIST,
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SPA_FEATURE_DEVICE_REBUILD,
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SPA_FEATURE_ZSTD_COMPRESS,
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SPA_FEATURE_DRAID,
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SPA_FEATURE_ZILSAXATTR,
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SPA_FEATURE_HEAD_ERRLOG,
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SPA_FEATURE_BLAKE3,
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SPA_FEATURE_BLOCK_CLONING,
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SPA_FEATURES
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} spa_feature_t;
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#define SPA_FEATURE_DISABLED (-1ULL)
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typedef enum zfeature_flags {
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/* Can open pool readonly even if this feature is not supported. */
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ZFEATURE_FLAG_READONLY_COMPAT = (1 << 0),
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/*
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* Is this feature necessary to load the pool? i.e. do we need this
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* feature to read the full feature list out of the MOS?
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*/
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ZFEATURE_FLAG_MOS = (1 << 1),
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/* Activate this feature at the same time it is enabled. */
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ZFEATURE_FLAG_ACTIVATE_ON_ENABLE = (1 << 2),
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/* Each dataset has a field set if it has ever used this feature. */
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ZFEATURE_FLAG_PER_DATASET = (1 << 3)
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} zfeature_flags_t;
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typedef enum zfeature_type {
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ZFEATURE_TYPE_BOOLEAN,
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ZFEATURE_TYPE_UINT64_ARRAY,
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ZFEATURE_NUM_TYPES
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} zfeature_type_t;
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typedef struct zfeature_info {
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spa_feature_t fi_feature;
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const char *fi_uname; /* User-facing feature name */
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const char *fi_guid; /* On-disk feature identifier */
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const char *fi_desc; /* Feature description */
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zfeature_flags_t fi_flags;
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boolean_t fi_zfs_mod_supported; /* supported by running zfs module */
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zfeature_type_t fi_type; /* Only relevant for PER_DATASET features */
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/* array of dependencies, terminated by SPA_FEATURE_NONE */
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const spa_feature_t *fi_depends;
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} zfeature_info_t;
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typedef int (zfeature_func_t)(zfeature_info_t *, void *);
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#define ZFS_FEATURE_DEBUG
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_ZFEATURE_COMMON_H zfeature_info_t spa_feature_table[SPA_FEATURES];
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_ZFEATURE_COMMON_H boolean_t zfeature_checks_disable;
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_ZFEATURE_COMMON_H boolean_t zfeature_is_valid_guid(const char *);
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_ZFEATURE_COMMON_H boolean_t zfeature_is_supported(const char *);
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_ZFEATURE_COMMON_H int zfeature_lookup_guid(const char *, spa_feature_t *);
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_ZFEATURE_COMMON_H int zfeature_lookup_name(const char *, spa_feature_t *);
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_ZFEATURE_COMMON_H boolean_t zfeature_depends_on(spa_feature_t, spa_feature_t);
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_ZFEATURE_COMMON_H void zpool_feature_init(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ZFEATURE_COMMON_H */
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