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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
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module/zfs/zfs_ioctl.c
+50
View File
@@ -4342,6 +4342,51 @@ zfs_ioc_pool_trim(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
return (total_errors > 0 ? SET_ERROR(EINVAL) : 0);
}
#define DDT_PRUNE_UNIT "ddt_prune_unit"
#define DDT_PRUNE_AMOUNT "ddt_prune_amount"
/*
* innvl: {
* "ddt_prune_unit" -> uint32_t
* "ddt_prune_amount" -> uint64_t
* }
*
* outnvl: "waited" -> boolean_t
*/
static const zfs_ioc_key_t zfs_keys_ddt_prune[] = {
{DDT_PRUNE_UNIT, DATA_TYPE_INT32, 0},
{DDT_PRUNE_AMOUNT, DATA_TYPE_UINT64, 0},
};
static int
zfs_ioc_ddt_prune(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
int32_t unit;
uint64_t amount;
if (nvlist_lookup_int32(innvl, DDT_PRUNE_UNIT, &unit) != 0 ||
nvlist_lookup_uint64(innvl, DDT_PRUNE_AMOUNT, &amount) != 0) {
return (EINVAL);
}
spa_t *spa;
int error = spa_open(poolname, &spa, FTAG);
if (error != 0)
return (error);
if (!spa_feature_is_enabled(spa, SPA_FEATURE_FAST_DEDUP)) {
spa_close(spa, FTAG);
return (SET_ERROR(ENOTSUP));
}
error = ddt_prune_unique_entries(spa, (zpool_ddt_prune_unit_t)unit,
amount);
spa_close(spa, FTAG);
return (error);
}
/*
* This ioctl waits for activity of a particular type to complete. If there is
* no activity of that type in progress, it returns immediately, and the
@@ -7430,6 +7475,11 @@ zfs_ioctl_init(void)
POOL_CHECK_NONE, B_FALSE, B_FALSE,
zfs_keys_get_props, ARRAY_SIZE(zfs_keys_get_props));
zfs_ioctl_register("zpool_ddt_prune", ZFS_IOC_DDT_PRUNE,
zfs_ioc_ddt_prune, zfs_secpolicy_config, POOL_NAME,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE,
zfs_keys_ddt_prune, ARRAY_SIZE(zfs_keys_ddt_prune));
/* IOCTLS that use the legacy function signature */
zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,