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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/ddt_log.c
+19 -5
View File
@@ -353,16 +353,15 @@ ddt_log_take_first(ddt_t *ddt, ddt_log_t *ddl, ddt_lightweight_entry_t *ddlwe)
}
boolean_t
ddt_log_take_key(ddt_t *ddt, ddt_log_t *ddl, const ddt_key_t *ddk,
ddt_lightweight_entry_t *ddlwe)
ddt_log_remove_key(ddt_t *ddt, ddt_log_t *ddl, const ddt_key_t *ddk)
{
ddt_log_entry_t *ddle = avl_find(&ddl->ddl_tree, ddk, NULL);
if (ddle == NULL)
return (B_FALSE);
DDT_LOG_ENTRY_TO_LIGHTWEIGHT(ddt, ddle, ddlwe);
ddt_histogram_sub_entry(ddt, &ddt->ddt_log_histogram, ddlwe);
ddt_lightweight_entry_t ddlwe;
DDT_LOG_ENTRY_TO_LIGHTWEIGHT(ddt, ddle, &ddlwe);
ddt_histogram_sub_entry(ddt, &ddt->ddt_log_histogram, &ddlwe);
avl_remove(&ddl->ddl_tree, ddle);
kmem_cache_free(ddt->ddt_flags & DDT_FLAG_FLAT ?
@@ -371,6 +370,21 @@ ddt_log_take_key(ddt_t *ddt, ddt_log_t *ddl, const ddt_key_t *ddk,
return (B_TRUE);
}
boolean_t
ddt_log_find_key(ddt_t *ddt, const ddt_key_t *ddk,
ddt_lightweight_entry_t *ddlwe)
{
ddt_log_entry_t *ddle =
avl_find(&ddt->ddt_log_active->ddl_tree, ddk, NULL);
if (!ddle)
ddle = avl_find(&ddt->ddt_log_flushing->ddl_tree, ddk, NULL);
if (!ddle)
return (B_FALSE);
if (ddlwe)
DDT_LOG_ENTRY_TO_LIGHTWEIGHT(ddt, ddle, ddlwe);
return (B_TRUE);
}
void
ddt_log_checkpoint(ddt_t *ddt, ddt_lightweight_entry_t *ddlwe, dmu_tx_t *tx)
{