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Add DDT prune command

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Requires the new 'flat' physical data which has the start
time for a class entry.

The amount to prune can be based on a target percentage of
the unique entries or based on the age (i.e., every entry
older than N days).

Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #16277
This commit is contained in:
Don Brady
2024-06-17 22:35:18 +00:00
committed by Brian Behlendorf
parent 4a4f7b019f
commit d4d79451cb
21 changed files with 905 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/libzfs_core/libzfs_core.abi
+15
View File
@@ -162,6 +162,7 @@
<elf-symbol name='lzc_channel_program_nosync' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_clone' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_create' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_ddt_prune' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_destroy' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_destroy_bookmarks' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='lzc_destroy_snaps' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -1444,6 +1445,7 @@
<enumerator name='ZFS_IOC_VDEV_SET_PROPS' value='23126'/>
<enumerator name='ZFS_IOC_POOL_SCRUB' value='23127'/>
<enumerator name='ZFS_IOC_POOL_PREFETCH' value='23128'/>
<enumerator name='ZFS_IOC_DDT_PRUNE' value='23129'/>
<enumerator name='ZFS_IOC_PLATFORM' value='23168'/>
<enumerator name='ZFS_IOC_EVENTS_NEXT' value='23169'/>
<enumerator name='ZFS_IOC_EVENTS_CLEAR' value='23170'/>
@@ -1484,6 +1486,13 @@
<enumerator name='ZPOOL_PREFETCH_DDT' value='1'/>
</enum-decl>
<typedef-decl name='zpool_prefetch_type_t' type-id='0299ab50' id='e55ff6bc'/>
<enum-decl name='zpool_ddt_prune_unit_t' naming-typedef-id='02e25ab0' id='509ae11c'>
<underlying-type type-id='9cac1fee'/>
<enumerator name='ZPOOL_DDT_PRUNE_NONE' value='0'/>
<enumerator name='ZPOOL_DDT_PRUNE_AGE' value='1'/>
<enumerator name='ZPOOL_DDT_PRUNE_PERCENTAGE' value='2'/>
</enum-decl>
<typedef-decl name='zpool_ddt_prune_unit_t' type-id='509ae11c' id='02e25ab0'/>
<enum-decl name='data_type_t' naming-typedef-id='8d0687d2' id='aeeae136'>
<underlying-type type-id='9cac1fee'/>
<enumerator name='DATA_TYPE_DONTCARE' value='-1'/>
@@ -3015,6 +3024,12 @@
<parameter type-id='857bb57e' name='outnvl'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='lzc_ddt_prune' mangled-name='lzc_ddt_prune' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='lzc_ddt_prune'>
<parameter type-id='80f4b756' name='pool'/>
<parameter type-id='02e25ab0' name='unit'/>
<parameter type-id='9c313c2d' name='amount'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-type size-in-bits='64' id='c70fa2e8'>
<parameter type-id='95e97e5e'/>
<parameter type-id='eaa32e2f'/>
lib/libzfs_core/libzfs_core.c
+22
View File
@@ -1927,3 +1927,25 @@ lzc_get_bootenv(const char *pool, nvlist_t **outnvl)
{
return (lzc_ioctl(ZFS_IOC_GET_BOOTENV, pool, NULL, outnvl));
}
/*
* Prune the specified amount from the pool's dedup table.
*/
int
lzc_ddt_prune(const char *pool, zpool_ddt_prune_unit_t unit, uint64_t amount)
{
int error;
nvlist_t *result = NULL;
nvlist_t *args = fnvlist_alloc();
fnvlist_add_int32(args, DDT_PRUNE_UNIT, unit);
fnvlist_add_uint64(args, DDT_PRUNE_AMOUNT, amount);
error = lzc_ioctl(ZFS_IOC_DDT_PRUNE, pool, args, &result);
fnvlist_free(args);
fnvlist_free(result);
return (error);
}