diff --git a/node/rpc/src/zgs/api.rs b/node/rpc/src/zgs/api.rs
index 32dcfb4..a922da5 100644
--- a/node/rpc/src/zgs/api.rs
+++ b/node/rpc/src/zgs/api.rs
@@ -63,7 +63,11 @@ pub trait Rpc {
     async fn check_file_finalized(&self, tx_seq_or_root: TxSeqOrRoot) -> RpcResult<Option<bool>>;
 
     #[method(name = "getFileInfo")]
-    async fn get_file_info(&self, data_root: DataRoot) -> RpcResult<Option<FileInfo>>;
+    async fn get_file_info(
+        &self,
+        data_root: DataRoot,
+        need_available: bool,
+    ) -> RpcResult<Option<FileInfo>>;
 
     #[method(name = "getFileInfoByTxSeq")]
     async fn get_file_info_by_tx_seq(&self, tx_seq: u64) -> RpcResult<Option<FileInfo>>;
diff --git a/node/rpc/src/zgs/impl.rs b/node/rpc/src/zgs/impl.rs
index 190aa53..f0462b2 100644
--- a/node/rpc/src/zgs/impl.rs
+++ b/node/rpc/src/zgs/impl.rs
@@ -95,7 +95,7 @@ impl RpcServer for RpcServerImpl {
         let tx_seq = try_option!(
             self.ctx
                 .log_store
-                .get_tx_seq_by_data_root(&data_root)
+                .get_tx_seq_by_data_root(&data_root, true)
                 .await?
         );
 
@@ -121,7 +121,12 @@ impl RpcServer for RpcServerImpl {
     ) -> RpcResult<Option<SegmentWithProof>> {
         info!(%data_root, %index, "zgs_downloadSegmentWithProof");
 
-        let tx = try_option!(self.ctx.log_store.get_tx_by_data_root(&data_root).await?);
+        let tx = try_option!(
+            self.ctx
+                .log_store
+                .get_tx_by_data_root(&data_root, true)
+                .await?
+        );
 
         self.get_segment_with_proof_by_tx(tx, index).await
     }
@@ -144,7 +149,12 @@ impl RpcServer for RpcServerImpl {
         let seq = match tx_seq_or_root {
             TxSeqOrRoot::TxSeq(v) => v,
             TxSeqOrRoot::Root(v) => {
-                try_option!(self.ctx.log_store.get_tx_seq_by_data_root(&v).await?)
+                try_option!(
+                    self.ctx
+                        .log_store
+                        .get_tx_seq_by_data_root(&v, false)
+                        .await?
+                )
             }
         };
 
@@ -163,10 +173,19 @@ impl RpcServer for RpcServerImpl {
         }
     }
 
-    async fn get_file_info(&self, data_root: DataRoot) -> RpcResult<Option<FileInfo>> {
+    async fn get_file_info(
+        &self,
+        data_root: DataRoot,
+        need_available: bool,
+    ) -> RpcResult<Option<FileInfo>> {
         debug!(%data_root, "zgs_getFileInfo");
 
-        let tx = try_option!(self.ctx.log_store.get_tx_by_data_root(&data_root).await?);
+        let tx = try_option!(
+            self.ctx
+                .log_store
+                .get_tx_by_data_root(&data_root, need_available)
+                .await?
+        );
 
         Ok(Some(self.get_file_info_by_tx(tx).await?))
     }
@@ -288,7 +307,7 @@ impl RpcServerImpl {
         let maybe_tx = self
             .ctx
             .log_store
-            .get_tx_by_data_root(&segment.root)
+            .get_tx_by_data_root(&segment.root, false)
             .await?;
 
         self.put_segment_with_maybe_tx(segment, maybe_tx).await
diff --git a/node/storage-async/src/lib.rs b/node/storage-async/src/lib.rs
index b564f42..57de0e2 100644
--- a/node/storage-async/src/lib.rs
+++ b/node/storage-async/src/lib.rs
@@ -59,15 +59,23 @@ impl Store {
     delegate!(fn get_proof_at_root(root: Option<DataRoot>, index: u64, length: u64) -> Result<FlowRangeProof>);
     delegate!(fn get_context() -> Result<(DataRoot, u64)>);
 
-    pub async fn get_tx_seq_by_data_root(&self, data_root: &DataRoot) -> Result<Option<u64>> {
+    pub async fn get_tx_seq_by_data_root(
+        &self,
+        data_root: &DataRoot,
+        need_available: bool,
+    ) -> Result<Option<u64>> {
         let root = *data_root;
-        self.spawn(move |store| store.get_tx_seq_by_data_root(&root))
+        self.spawn(move |store| store.get_tx_seq_by_data_root(&root, need_available))
             .await
     }
 
-    pub async fn get_tx_by_data_root(&self, data_root: &DataRoot) -> Result<Option<Transaction>> {
+    pub async fn get_tx_by_data_root(
+        &self,
+        data_root: &DataRoot,
+        need_available: bool,
+    ) -> Result<Option<Transaction>> {
         let root = *data_root;
-        self.spawn(move |store| store.get_tx_by_data_root(&root))
+        self.spawn(move |store| store.get_tx_by_data_root(&root, need_available))
             .await
     }
 
diff --git a/node/storage/src/log_store/log_manager.rs b/node/storage/src/log_store/log_manager.rs
index 6a024e2..9ff8d1a 100644
--- a/node/storage/src/log_store/log_manager.rs
+++ b/node/storage/src/log_store/log_manager.rs
@@ -511,7 +511,7 @@ impl LogStoreChunkRead for LogManager {
         index_start: usize,
         index_end: usize,
     ) -> crate::error::Result<Option<ChunkArray>> {
-        let tx_seq = try_option!(self.get_tx_seq_by_data_root(data_root)?);
+        let tx_seq = try_option!(self.get_tx_seq_by_data_root(data_root, false)?);
         self.get_chunks_by_tx_and_index_range(tx_seq, index_start, index_end)
     }
 
@@ -536,7 +536,11 @@ impl LogStoreRead for LogManager {
         self.tx_store.get_tx_by_seq_number(seq)
     }
 
-    fn get_tx_seq_by_data_root(&self, data_root: &DataRoot) -> crate::error::Result<Option<u64>> {
+    fn get_tx_seq_by_data_root(
+        &self,
+        data_root: &DataRoot,
+        need_available: bool,
+    ) -> crate::error::Result<Option<u64>> {
         let seq_list = self.tx_store.get_tx_seq_list_by_data_root(data_root)?;
         for tx_seq in &seq_list {
             if self.tx_store.check_tx_completed(*tx_seq)? {
@@ -544,6 +548,9 @@ impl LogStoreRead for LogManager {
                 return Ok(Some(*tx_seq));
             }
         }
+        if need_available {
+            return Ok(None);
+        }
         // No tx is finalized, return the first one.
         Ok(seq_list.first().cloned())
     }
diff --git a/node/storage/src/log_store/mod.rs b/node/storage/src/log_store/mod.rs
index fc2f82f..593f6b3 100644
--- a/node/storage/src/log_store/mod.rs
+++ b/node/storage/src/log_store/mod.rs
@@ -31,14 +31,22 @@ pub trait LogStoreRead: LogStoreChunkRead {
     fn get_tx_by_seq_number(&self, seq: u64) -> Result<Option<Transaction>>;
 
     /// Get a transaction by the data root of its data.
-    /// If all txs are not finalized, return the first one.
+    /// If all txs are not finalized, return the first one if need available is false.
     /// Otherwise, return the first finalized tx.
-    fn get_tx_seq_by_data_root(&self, data_root: &DataRoot) -> Result<Option<u64>>;
+    fn get_tx_seq_by_data_root(
+        &self,
+        data_root: &DataRoot,
+        need_available: bool,
+    ) -> Result<Option<u64>>;
 
-    /// If all txs are not finalized, return the first one.
+    /// If all txs are not finalized, return the first one if need available is false.
     /// Otherwise, return the first finalized tx.
-    fn get_tx_by_data_root(&self, data_root: &DataRoot) -> Result<Option<Transaction>> {
-        match self.get_tx_seq_by_data_root(data_root)? {
+    fn get_tx_by_data_root(
+        &self,
+        data_root: &DataRoot,
+        need_available: bool,
+    ) -> Result<Option<Transaction>> {
+        match self.get_tx_seq_by_data_root(data_root, need_available)? {
             Some(seq) => self.get_tx_by_seq_number(seq),
             None => Ok(None),
         }