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Implementation of block cloning for ZFS

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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
This commit is contained in:
Pawel Jakub Dawidek
2023-03-10 20:59:53 +01:00
committed by GitHub
parent da19d919a8
commit 67a1b03791
51 changed files with 3480 additions and 120 deletions
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lib/libzfs/libzfs.abi
+9 -5
View File
@@ -590,7 +590,7 @@
<elf-symbol name='fletcher_4_superscalar_ops' size='64' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='libzfs_config_ops' size='16' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='sa_protocol_names' size='16' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='spa_feature_table' size='2072' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='spa_feature_table' size='2128' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfeature_checks_disable' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_deleg_perm_tab' size='512' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_history_event_names' size='328' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -3174,7 +3174,10 @@
<enumerator name='ZPOOL_PROP_LOAD_GUID' value='30'/>
<enumerator name='ZPOOL_PROP_AUTOTRIM' value='31'/>
<enumerator name='ZPOOL_PROP_COMPATIBILITY' value='32'/>
<enumerator name='ZPOOL_NUM_PROPS' value='33'/>
<enumerator name='ZPOOL_PROP_BCLONEUSED' value='33'/>
<enumerator name='ZPOOL_PROP_BCLONESAVED' value='34'/>
<enumerator name='ZPOOL_PROP_BCLONERATIO' value='35'/>
<enumerator name='ZPOOL_NUM_PROPS' value='36'/>
</enum-decl>
<typedef-decl name='zpool_prop_t' type-id='af1ba157' id='5d0c23fb'/>
<enum-decl name='vdev_prop_t' naming-typedef-id='5aa5c90c' id='1573bec8'>
@@ -4850,8 +4853,8 @@
</function-decl>
</abi-instr>
<abi-instr address-size='64' path='module/zcommon/zfeature_common.c' language='LANG_C99'>
<array-type-def dimensions='1' type-id='83f29ca2' size-in-bits='16576' id='d95b2b0b'>
<subrange length='37' type-id='7359adad' id='aa6426fb'/>
<array-type-def dimensions='1' type-id='83f29ca2' size-in-bits='17024' id='d95b2b0b'>
<subrange length='38' type-id='7359adad' id='aa6426fb'/>
</array-type-def>
<enum-decl name='spa_feature' id='33ecb627'>
<underlying-type type-id='9cac1fee'/>
@@ -4893,7 +4896,8 @@
<enumerator name='SPA_FEATURE_ZILSAXATTR' value='34'/>
<enumerator name='SPA_FEATURE_HEAD_ERRLOG' value='35'/>
<enumerator name='SPA_FEATURE_BLAKE3' value='36'/>
<enumerator name='SPA_FEATURES' value='37'/>
<enumerator name='SPA_FEATURE_BLOCK_CLONING' value='37'/>
<enumerator name='SPA_FEATURES' value='38'/>
</enum-decl>
<typedef-decl name='spa_feature_t' type-id='33ecb627' id='d6618c78'/>
<enum-decl name='zfeature_flags' id='6db816a4'>
lib/libzfs/libzfs_pool.c
+3
View File
@@ -339,6 +339,8 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf,
case ZPOOL_PROP_ASHIFT:
case ZPOOL_PROP_MAXBLOCKSIZE:
case ZPOOL_PROP_MAXDNODESIZE:
case ZPOOL_PROP_BCLONESAVED:
case ZPOOL_PROP_BCLONEUSED:
if (literal)
(void) snprintf(buf, len, "%llu",
(u_longlong_t)intval);
@@ -380,6 +382,7 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf,
}
break;
case ZPOOL_PROP_BCLONERATIO:
case ZPOOL_PROP_DEDUPRATIO:
if (literal)
(void) snprintf(buf, len, "%llu.%02llu",
lib/libzpool/Makefile.am
+1
View File
@@ -74,6 +74,7 @@ nodist_libzpool_la_SOURCES = \
module/zfs/bptree.c \
module/zfs/bqueue.c \
module/zfs/btree.c \
module/zfs/brt.c \
module/zfs/dbuf.c \
module/zfs/dbuf_stats.c \
module/zfs/ddt.c \