diff --git a/src/meta/model_v2/src/compaction_config.rs b/src/meta/model_v2/src/compaction_config.rs
index b9d89371de530..5236934411d95 100644
--- a/src/meta/model_v2/src/compaction_config.rs
+++ b/src/meta/model_v2/src/compaction_config.rs
@@ -32,5 +32,4 @@ pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}
 
-#[derive(Clone, Debug, PartialEq, Eq, FromJsonQueryResult, Serialize, Deserialize, Default)]
-pub struct CompactionConfig(pub PbCompactionConfig);
+crate::derive_from_json_struct!(CompactionConfig, PbCompactionConfig);
diff --git a/src/meta/model_v2/src/compaction_status.rs b/src/meta/model_v2/src/compaction_status.rs
index 5e62937fed24d..da3f47ac8713b 100644
--- a/src/meta/model_v2/src/compaction_status.rs
+++ b/src/meta/model_v2/src/compaction_status.rs
@@ -32,5 +32,4 @@ pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}
 
-#[derive(Clone, Debug, PartialEq, Eq, FromJsonQueryResult, Serialize, Deserialize, Default)]
-pub struct LevelHandlers(pub Vec<PbLevelHandler>);
+crate::derive_from_json_struct!(LevelHandlers, Vec<PbLevelHandler>);
diff --git a/src/meta/model_v2/src/compaction_task.rs b/src/meta/model_v2/src/compaction_task.rs
index c75ac921d8623..ede8ad8cfde33 100644
--- a/src/meta/model_v2/src/compaction_task.rs
+++ b/src/meta/model_v2/src/compaction_task.rs
@@ -33,8 +33,7 @@ pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}
 
-#[derive(Clone, Debug, PartialEq, Eq, FromJsonQueryResult, Serialize, Deserialize, Default)]
-pub struct CompactionTask(pub PbCompactTask);
+crate::derive_from_json_struct!(CompactionTask, PbCompactTask);
 
 impl From<Model> for CompactTaskAssignment {
     fn from(value: Model) -> Self {
diff --git a/src/meta/model_v2/src/hummock_version_delta.rs b/src/meta/model_v2/src/hummock_version_delta.rs
index 5771b3bb0dfb3..4ce516f175343 100644
--- a/src/meta/model_v2/src/hummock_version_delta.rs
+++ b/src/meta/model_v2/src/hummock_version_delta.rs
@@ -39,11 +39,9 @@ pub enum Relation {}
 
 impl ActiveModelBehavior for ActiveModel {}
 
-#[derive(Clone, Debug, PartialEq, Eq, FromJsonQueryResult, Serialize, Deserialize, Default)]
-pub struct SstableObjectIds(pub Vec<HummockSstableObjectId>);
+crate::derive_from_json_struct!(SstableObjectIds, Vec<HummockSstableObjectId>);
 
-#[derive(Clone, Debug, PartialEq, Eq, FromJsonQueryResult, Serialize, Deserialize, Default)]
-pub struct GroupDeltas(pub HashMap<CompactionGroupId, Vec<PbGroupDelta>>);
+crate::derive_from_json_struct!(GroupDeltas, HashMap<CompactionGroupId, Vec<PbGroupDelta>>);
 
 impl From<Model> for HummockVersionDelta {
     fn from(value: Model) -> Self {
diff --git a/src/meta/model_v2/src/lib.rs b/src/meta/model_v2/src/lib.rs
index 64ef18d67a4e7..ba2e114d5060d 100644
--- a/src/meta/model_v2/src/lib.rs
+++ b/src/meta/model_v2/src/lib.rs
@@ -126,6 +126,8 @@ macro_rules! derive_from_json_struct {
     };
 }
 
+pub(crate) use derive_from_json_struct;
+
 derive_from_json_struct!(I32Array, Vec<i32>);
 derive_from_json_struct!(U32Array, Vec<u32>);
 
diff --git a/src/meta/src/backup_restore/meta_snapshot_builder_v2.rs b/src/meta/src/backup_restore/meta_snapshot_builder_v2.rs
index 4b0c737dab849..95a9acac1fdb6 100644
--- a/src/meta/src/backup_restore/meta_snapshot_builder_v2.rs
+++ b/src/meta/src/backup_restore/meta_snapshot_builder_v2.rs
@@ -12,8 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![allow(dead_code)]
-#![allow(unused_variables)]
+#![expect(dead_code, reason = "WIP")]
 
 use std::future::Future;