diff --git a/domain/schema/controller.go b/domain/schema/controller.go
index f2d1fa3e8f0..864ca1661d2 100644
--- a/domain/schema/controller.go
+++ b/domain/schema/controller.go
@@ -46,6 +46,7 @@ func ControllerDDL() *schema.Schema {
 		changeLogTriggersForTable("upgrade_info", "uuid", tableUpgradeInfo),
 		changeLogTriggersForTable("upgrade_info_controller_node", "upgrade_info_uuid", tableUpgradeInfoControllerNode),
 		autocertCacheSchema,
+		objectStoreMetadataSchema,
 	}
 
 	schema := schema.New()
diff --git a/domain/schema/model.go b/domain/schema/model.go
index f2ef99f5cef..87d75b12763 100644
--- a/domain/schema/model.go
+++ b/domain/schema/model.go
@@ -19,6 +19,7 @@ func ModelDDL() *schema.Schema {
 		modelConfig,
 		changeLogTriggersForTable("model_config", "key", tableModelConfig),
 		spacesSchema,
+		objectStoreMetadataSchema,
 	}
 
 	schema := schema.New()
diff --git a/domain/schema/objectstore.go b/domain/schema/objectstore.go
new file mode 100644
index 00000000000..2f1e010bc48
--- /dev/null
+++ b/domain/schema/objectstore.go
@@ -0,0 +1,48 @@
+// Copyright 2023 Canonical Ltd.
+// Licensed under the AGPLv3, see LICENCE file for details.
+
+package schema
+
+import "github.com/juju/juju/core/database/schema"
+
+// objectStoreMetadataSchema provides a helper function for generating a change_log ddl
+// for a schema.
+func objectStoreMetadataSchema() schema.Patch {
+	return schema.MakePatch(`
+CREATE TABLE object_store_metadata_hash_type (
+    id          INT PRIMARY KEY,
+    hash_type   TEXT NOT NULL
+);
+
+CREATE UNIQUE INDEX idx_object_store_metadata_hash_type_name
+ON object_store_metadata_hash_type (hash_type);
+
+INSERT INTO object_store_metadata_hash_type VALUES
+    (0, 'none'),
+    (1, 'sha-256');
+
+CREATE TABLE object_store_metadata (
+    uuid            TEXT PRIMARY KEY,
+    hash_type_id    INT NOT NULL,
+    hash            TEXT,
+    CONSTRAINT      fk_object_store_metadata_hash_type
+        FOREIGN KEY (hash_type_id)
+        REFERENCES  object_store_metadata_hash_type(id)
+);
+
+CREATE UNIQUE INDEX idx_object_store_metadata_hash ON object_store_metadata (hash);
+
+CREATE TABLE object_store_metadata_path (
+    uuid            TEXT PRIMARY KEY,
+    metadata_uuid   TEXT NOT NULL,
+    path            TEXT NOT NULL,
+    size            INT NOT NULL,
+    CONSTRAINT      fk_object_store_metadata_metadata_uuid
+        FOREIGN KEY (metadata_uuid)
+        REFERENCES  object_store_metadata(uuid)
+);
+
+CREATE UNIQUE INDEX idx_object_store_metadata_path ON object_store_metadata_path (path);
+
+`)
+}
diff --git a/domain/schema/schema_test.go b/domain/schema/schema_test.go
index 6f9bcdbe522..5e5bdb7e79a 100644
--- a/domain/schema/schema_test.go
+++ b/domain/schema/schema_test.go
@@ -87,6 +87,11 @@ func (s *schemaSuite) TestControllerDDLApply(c *gc.C) {
 		"upgrade_info",
 		"upgrade_info_controller_node",
 		"upgrade_state_type",
+
+		// Object store metadata
+		"object_store_metadata",
+		"object_store_metadata_path",
+		"object_store_metadata_hash_type",
 	)
 	c.Assert(readTableNames(c, s.DB()), jc.SameContents, expected.Union(internalTableNames).SortedValues())
 }
@@ -112,6 +117,11 @@ func (s *schemaSuite) TestModelDDLApply(c *gc.C) {
 		// Spaces
 		"spaces",
 		"provider_spaces",
+
+		// Object store metadata
+		"object_store_metadata",
+		"object_store_metadata_path",
+		"object_store_metadata_hash_type",
 	)
 	c.Assert(readTableNames(c, s.DB()), jc.SameContents, expected.Union(internalTableNames).SortedValues())
 }