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https://git.proxmox.com/git/mirror_zfs.git
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ddt: add support for prefetching tables into the ARC
This change adds a new `zpool prefetch -t ddt $pool` command which causes a pool's DDT to be loaded into the ARC. The primary goal is to remove the need to "warm" a pool's cache before deduplication stops slowing write performance. It may also provide a way to reload portions of a DDT if they have been flushed due to inactivity. Sponsored-by: iXsystems, Inc. Sponsored-by: Catalogics, Inc. Sponsored-by: Klara, Inc. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Allan Jude <allan@klarasystems.com> Signed-off-by: Will Andrews <will.andrews@klarasystems.com> Signed-off-by: Fred Weigel <fred.weigel@klarasystems.com> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Signed-off-by: Don Brady <don.brady@klarasystems.com> Co-authored-by: Will Andrews <will.andrews@klarasystems.com> Co-authored-by: Don Brady <don.brady@klarasystems.com> Closes #15890
This commit is contained in:
Allan Jude
+55
-14
@@ -457,6 +457,7 @@
|
||||
<elf-symbol name='zfs_wait_status' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zfs_zpl_version_map' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_add' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_add_propname' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_checkpoint' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_clear' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_clear_label' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
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||||
@@ -520,6 +521,7 @@
|
||||
<elf-symbol name='zpool_open' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_open_canfail' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_pool_state_to_name' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_prefetch' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_prepare_and_label_disk' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='zpool_prepare_disk' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
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||||
<elf-symbol name='zpool_print_unsup_feat' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
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||||
@@ -1642,6 +1644,9 @@
|
||||
<class-decl name='uu_avl' is-struct='yes' visibility='default' is-declaration-only='yes' id='4af029d1'/>
|
||||
<class-decl name='uu_avl_pool' is-struct='yes' visibility='default' is-declaration-only='yes' id='12a530a8'/>
|
||||
<class-decl name='uu_avl_walk' is-struct='yes' visibility='default' is-declaration-only='yes' id='e70a39e3'/>
|
||||
<array-type-def dimensions='1' type-id='80f4b756' size-in-bits='256' id='71dc54ac'>
|
||||
<subrange length='4' type-id='7359adad' id='16fe7105'/>
|
||||
</array-type-def>
|
||||
<type-decl name='int' size-in-bits='32' id='95e97e5e'/>
|
||||
<type-decl name='long int' size-in-bits='64' id='bd54fe1a'/>
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||||
<type-decl name='long long int' size-in-bits='64' id='1eb56b1e'/>
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||||
@@ -2096,7 +2101,7 @@
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||||
<var-decl name='zfs_props_table' type-id='ae3e8ca6' visibility='default'/>
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||||
</data-member>
|
||||
</class-decl>
|
||||
<class-decl name='zpool_handle' size-in-bits='2560' is-struct='yes' visibility='default' id='67002a8a'>
|
||||
<class-decl name='zpool_handle' size-in-bits='2816' is-struct='yes' visibility='default' id='67002a8a'>
|
||||
<data-member access='public' layout-offset-in-bits='0'>
|
||||
<var-decl name='zpool_hdl' type-id='b0382bb3' visibility='default'/>
|
||||
</data-member>
|
||||
@@ -2109,19 +2114,25 @@
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||||
<data-member access='public' layout-offset-in-bits='2176'>
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||||
<var-decl name='zpool_state' type-id='95e97e5e' visibility='default'/>
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||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2208'>
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||||
<var-decl name='zpool_n_propnames' type-id='f0981eeb' visibility='default'/>
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||||
</data-member>
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||||
<data-member access='public' layout-offset-in-bits='2240'>
|
||||
<var-decl name='zpool_config_size' type-id='b59d7dce' visibility='default'/>
|
||||
</data-member>
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||||
<data-member access='public' layout-offset-in-bits='2304'>
|
||||
<var-decl name='zpool_config' type-id='5ce45b60' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2368'>
|
||||
<var-decl name='zpool_old_config' type-id='5ce45b60' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2432'>
|
||||
<var-decl name='zpool_props' type-id='5ce45b60' visibility='default'/>
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||||
<var-decl name='zpool_propnames' type-id='71dc54ac' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2496'>
|
||||
<var-decl name='zpool_config_size' type-id='b59d7dce' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2560'>
|
||||
<var-decl name='zpool_config' type-id='5ce45b60' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2624'>
|
||||
<var-decl name='zpool_old_config' type-id='5ce45b60' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2688'>
|
||||
<var-decl name='zpool_props' type-id='5ce45b60' visibility='default'/>
|
||||
</data-member>
|
||||
<data-member access='public' layout-offset-in-bits='2752'>
|
||||
<var-decl name='zpool_start_block' type-id='804dc465' visibility='default'/>
|
||||
</data-member>
|
||||
</class-decl>
|
||||
@@ -2923,7 +2934,8 @@
|
||||
<enumerator name='ZPOOL_PROP_BCLONERATIO' value='35'/>
|
||||
<enumerator name='ZPOOL_PROP_DEDUP_TABLE_SIZE' value='36'/>
|
||||
<enumerator name='ZPOOL_PROP_DEDUP_TABLE_QUOTA' value='37'/>
|
||||
<enumerator name='ZPOOL_NUM_PROPS' value='38'/>
|
||||
<enumerator name='ZPOOL_PROP_DEDUPCACHED' value='38'/>
|
||||
<enumerator name='ZPOOL_NUM_PROPS' value='39'/>
|
||||
</enum-decl>
|
||||
<typedef-decl name='zpool_prop_t' type-id='af1ba157' id='5d0c23fb'/>
|
||||
<typedef-decl name='regoff_t' type-id='95e97e5e' id='54a2a2a8'/>
|
||||
@@ -5896,6 +5908,7 @@
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||||
<enumerator name='ZFS_IOC_VDEV_GET_PROPS' value='23125'/>
|
||||
<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_PLATFORM' value='23168'/>
|
||||
<enumerator name='ZFS_IOC_EVENTS_NEXT' value='23169'/>
|
||||
<enumerator name='ZFS_IOC_EVENTS_CLEAR' value='23170'/>
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||||
@@ -5924,6 +5937,12 @@
|
||||
<enumerator name='ZPOOL_WAIT_NUM_ACTIVITIES' value='9'/>
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||||
</enum-decl>
|
||||
<typedef-decl name='zpool_wait_activity_t' type-id='849338e3' id='73446457'/>
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||||
<enum-decl name='zpool_prefetch_type_t' naming-typedef-id='e55ff6bc' id='0299ab50'>
|
||||
<underlying-type type-id='9cac1fee'/>
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||||
<enumerator name='ZPOOL_PREFETCH_NONE' value='0'/>
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||||
<enumerator name='ZPOOL_PREFETCH_DDT' value='1'/>
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||||
</enum-decl>
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||||
<typedef-decl name='zpool_prefetch_type_t' type-id='0299ab50' id='e55ff6bc'/>
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||||
<enum-decl name='spa_feature' id='33ecb627'>
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||||
<underlying-type type-id='9cac1fee'/>
|
||||
<enumerator name='SPA_FEATURE_NONE' value='-1'/>
|
||||
@@ -5971,6 +5990,8 @@
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||||
<enumerator name='SPA_FEATURES' value='41'/>
|
||||
</enum-decl>
|
||||
<typedef-decl name='spa_feature_t' type-id='33ecb627' id='d6618c78'/>
|
||||
<qualified-type-def type-id='80f4b756' const='yes' id='b99c00c9'/>
|
||||
<pointer-type-def type-id='b99c00c9' size-in-bits='64' id='13956559'/>
|
||||
<qualified-type-def type-id='22cce67b' const='yes' id='d2816df0'/>
|
||||
<pointer-type-def type-id='d2816df0' size-in-bits='64' id='3bbfee2e'/>
|
||||
<qualified-type-def type-id='b96825af' const='yes' id='2b61797f'/>
|
||||
@@ -6063,6 +6084,11 @@
|
||||
<parameter type-id='37e3bd22'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='lzc_pool_prefetch' visibility='default' binding='global' size-in-bits='64'>
|
||||
<parameter type-id='80f4b756'/>
|
||||
<parameter type-id='e55ff6bc'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='lzc_set_bootenv' visibility='default' binding='global' size-in-bits='64'>
|
||||
<parameter type-id='80f4b756'/>
|
||||
<parameter type-id='22cce67b'/>
|
||||
@@ -6208,6 +6234,13 @@
|
||||
<parameter type-id='9da381c4'/>
|
||||
<return type-id='48b5725f'/>
|
||||
</function-decl>
|
||||
<function-decl name='fnvlist_add_string_array' visibility='default' binding='global' size-in-bits='64'>
|
||||
<parameter type-id='5ce45b60'/>
|
||||
<parameter type-id='80f4b756'/>
|
||||
<parameter type-id='13956559'/>
|
||||
<parameter type-id='3502e3ff'/>
|
||||
<return type-id='48b5725f'/>
|
||||
</function-decl>
|
||||
<function-decl name='fnvlist_add_nvlist_array' visibility='default' binding='global' size-in-bits='64'>
|
||||
<parameter type-id='5ce45b60'/>
|
||||
<parameter type-id='80f4b756'/>
|
||||
@@ -6396,6 +6429,11 @@
|
||||
<parameter type-id='4c81de99' name='zhp'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='zpool_prefetch' mangled-name='zpool_prefetch' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_prefetch'>
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||||
<parameter type-id='4c81de99' name='zhp'/>
|
||||
<parameter type-id='e55ff6bc' name='type'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='zpool_add' mangled-name='zpool_add' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_add'>
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||||
<parameter type-id='4c81de99' name='zhp'/>
|
||||
<parameter type-id='5ce45b60' name='nvroot'/>
|
||||
@@ -6590,6 +6628,11 @@
|
||||
<parameter type-id='95e97e5e' name='name_flags'/>
|
||||
<return type-id='26a90f95'/>
|
||||
</function-decl>
|
||||
<function-decl name='zpool_add_propname' mangled-name='zpool_add_propname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_add_propname'>
|
||||
<parameter type-id='4c81de99' name='zhp'/>
|
||||
<parameter type-id='80f4b756' name='propname'/>
|
||||
<return type-id='48b5725f'/>
|
||||
</function-decl>
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||||
<function-decl name='zpool_get_errlog' mangled-name='zpool_get_errlog' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_get_errlog'>
|
||||
<parameter type-id='4c81de99' name='zhp'/>
|
||||
<parameter type-id='857bb57e' name='nverrlistp'/>
|
||||
@@ -8689,7 +8732,6 @@
|
||||
</function-decl>
|
||||
</abi-instr>
|
||||
<abi-instr address-size='64' path='lib/libzutil/zutil_device_path.c' language='LANG_C99'>
|
||||
<pointer-type-def type-id='b99c00c9' size-in-bits='64' id='13956559'/>
|
||||
<function-decl name='zpool_default_search_paths' mangled-name='zpool_default_search_paths' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_default_search_paths'>
|
||||
<parameter type-id='78c01427'/>
|
||||
<return type-id='13956559'/>
|
||||
@@ -9151,7 +9193,6 @@
|
||||
<array-type-def dimensions='1' type-id='b99c00c9' size-in-bits='2624' id='5ce15418'>
|
||||
<subrange length='41' type-id='7359adad' id='cb834f44'/>
|
||||
</array-type-def>
|
||||
<qualified-type-def type-id='80f4b756' const='yes' id='b99c00c9'/>
|
||||
<pointer-type-def type-id='8f92235e' size-in-bits='64' id='90421557'/>
|
||||
<function-decl name='nvpair_value_uint32' visibility='default' binding='global' size-in-bits='64'>
|
||||
<parameter type-id='dace003f'/>
|
||||
|
||||
@@ -94,12 +94,15 @@ struct zfs_handle {
|
||||
* snapshots of volumes.
|
||||
*/
|
||||
#define ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
|
||||
#define ZHP_MAX_PROPNAMES 4
|
||||
|
||||
struct zpool_handle {
|
||||
libzfs_handle_t *zpool_hdl;
|
||||
zpool_handle_t *zpool_next;
|
||||
char zpool_name[ZFS_MAX_DATASET_NAME_LEN];
|
||||
int zpool_state;
|
||||
unsigned int zpool_n_propnames;
|
||||
const char *zpool_propnames[ZHP_MAX_PROPNAMES];
|
||||
size_t zpool_config_size;
|
||||
nvlist_t *zpool_config;
|
||||
nvlist_t *zpool_old_config;
|
||||
|
||||
@@ -79,6 +79,13 @@ zpool_get_all_props(zpool_handle_t *zhp)
|
||||
|
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(void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
|
||||
|
||||
if (zhp->zpool_n_propnames > 0) {
|
||||
nvlist_t *innvl = fnvlist_alloc();
|
||||
fnvlist_add_string_array(innvl, ZPOOL_GET_PROPS_NAMES,
|
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zhp->zpool_propnames, zhp->zpool_n_propnames);
|
||||
zcmd_write_src_nvlist(hdl, &zc, innvl);
|
||||
}
|
||||
|
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zcmd_alloc_dst_nvlist(hdl, &zc, 0);
|
||||
|
||||
while (zfs_ioctl(hdl, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) {
|
||||
@@ -318,6 +325,15 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf,
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* ZPOOL_PROP_DEDUPCACHED can be fetched by name only using
|
||||
* the ZPOOL_GET_PROPS_NAMES mechanism
|
||||
*/
|
||||
if (prop == ZPOOL_PROP_DEDUPCACHED) {
|
||||
zpool_add_propname(zhp, ZPOOL_DEDUPCACHED_PROP_NAME);
|
||||
(void) zpool_get_all_props(zhp);
|
||||
}
|
||||
|
||||
if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) &&
|
||||
prop != ZPOOL_PROP_NAME)
|
||||
return (-1);
|
||||
@@ -361,6 +377,7 @@ zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf,
|
||||
case ZPOOL_PROP_BCLONESAVED:
|
||||
case ZPOOL_PROP_BCLONEUSED:
|
||||
case ZPOOL_PROP_DEDUP_TABLE_SIZE:
|
||||
case ZPOOL_PROP_DEDUPCACHED:
|
||||
if (literal)
|
||||
(void) snprintf(buf, len, "%llu",
|
||||
(u_longlong_t)intval);
|
||||
@@ -1738,6 +1755,28 @@ zpool_discard_checkpoint(zpool_handle_t *zhp)
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Load data type for the given pool.
|
||||
*/
|
||||
int
|
||||
zpool_prefetch(zpool_handle_t *zhp, zpool_prefetch_type_t type)
|
||||
{
|
||||
libzfs_handle_t *hdl = zhp->zpool_hdl;
|
||||
char msg[1024];
|
||||
int error;
|
||||
|
||||
error = lzc_pool_prefetch(zhp->zpool_name, type);
|
||||
if (error != 0) {
|
||||
(void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
|
||||
"cannot prefetch %s in '%s'"),
|
||||
type == ZPOOL_PREFETCH_DDT ? "ddt" : "", zhp->zpool_name);
|
||||
(void) zpool_standard_error(hdl, error, msg);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Add the given vdevs to the pool. The caller must have already performed the
|
||||
* necessary verification to ensure that the vdev specification is well-formed.
|
||||
@@ -4401,6 +4440,14 @@ zbookmark_mem_compare(const void *a, const void *b)
|
||||
return (memcmp(a, b, sizeof (zbookmark_phys_t)));
|
||||
}
|
||||
|
||||
void
|
||||
zpool_add_propname(zpool_handle_t *zhp, const char *propname)
|
||||
{
|
||||
assert(zhp->zpool_n_propnames < ZHP_MAX_PROPNAMES);
|
||||
zhp->zpool_propnames[zhp->zpool_n_propnames] = propname;
|
||||
zhp->zpool_n_propnames++;
|
||||
}
|
||||
|
||||
/*
|
||||
* Retrieve the persistent error log, uniquify the members, and return to the
|
||||
* caller.
|
||||
|
||||
@@ -176,6 +176,7 @@
|
||||
<elf-symbol name='lzc_load_key' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_pool_checkpoint' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_pool_checkpoint_discard' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_pool_prefetch' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_promote' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_receive' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
<elf-symbol name='lzc_receive_one' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
|
||||
@@ -1428,6 +1429,7 @@
|
||||
<enumerator name='ZFS_IOC_VDEV_GET_PROPS' value='23125'/>
|
||||
<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_PLATFORM' value='23168'/>
|
||||
<enumerator name='ZFS_IOC_EVENTS_NEXT' value='23169'/>
|
||||
<enumerator name='ZFS_IOC_EVENTS_CLEAR' value='23170'/>
|
||||
@@ -1462,6 +1464,12 @@
|
||||
<enumerator name='ZFS_WAIT_NUM_ACTIVITIES' value='1'/>
|
||||
</enum-decl>
|
||||
<typedef-decl name='zfs_wait_activity_t' type-id='527d5dc6' id='3024501a'/>
|
||||
<enum-decl name='zpool_prefetch_type_t' naming-typedef-id='e55ff6bc' id='0299ab50'>
|
||||
<underlying-type type-id='9cac1fee'/>
|
||||
<enumerator name='ZPOOL_PREFETCH_NONE' value='0'/>
|
||||
<enumerator name='ZPOOL_PREFETCH_DDT' value='1'/>
|
||||
</enum-decl>
|
||||
<typedef-decl name='zpool_prefetch_type_t' type-id='0299ab50' id='e55ff6bc'/>
|
||||
<enum-decl name='data_type_t' naming-typedef-id='8d0687d2' id='aeeae136'>
|
||||
<underlying-type type-id='9cac1fee'/>
|
||||
<enumerator name='DATA_TYPE_DONTCARE' value='-1'/>
|
||||
@@ -2892,6 +2900,11 @@
|
||||
<parameter type-id='80f4b756' name='pool'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='lzc_pool_prefetch' mangled-name='lzc_pool_prefetch' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='lzc_pool_prefetch'>
|
||||
<parameter type-id='80f4b756' name='pool'/>
|
||||
<parameter type-id='e55ff6bc' name='type'/>
|
||||
<return type-id='95e97e5e'/>
|
||||
</function-decl>
|
||||
<function-decl name='lzc_channel_program_nosync' mangled-name='lzc_channel_program_nosync' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='lzc_channel_program_nosync'>
|
||||
<parameter type-id='80f4b756' name='pool'/>
|
||||
<parameter type-id='80f4b756' name='program'/>
|
||||
|
||||
@@ -1629,6 +1629,26 @@ lzc_pool_checkpoint_discard(const char *pool)
|
||||
return (error);
|
||||
}
|
||||
|
||||
/*
|
||||
* Load the requested data type for the specified pool.
|
||||
*/
|
||||
int
|
||||
lzc_pool_prefetch(const char *pool, zpool_prefetch_type_t type)
|
||||
{
|
||||
int error;
|
||||
nvlist_t *result = NULL;
|
||||
nvlist_t *args = fnvlist_alloc();
|
||||
|
||||
fnvlist_add_int32(args, ZPOOL_PREFETCH_TYPE, type);
|
||||
|
||||
error = lzc_ioctl(ZFS_IOC_POOL_PREFETCH, pool, args, &result);
|
||||
|
||||
fnvlist_free(args);
|
||||
fnvlist_free(result);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
/*
|
||||
* Executes a read-only channel program.
|
||||
*
|
||||
|
||||
Reference in New Issue
Block a user