fix(kms): enforce readiness probe deadline

7 call sites of wait_for_kms_ready() used ? in async test functions
that return () instead of Result. Changed to .expect("KMS ready").

crates/e2e_test/src/kms/bucket_default_encryption_test.rs

@@ -37,7 +37,7 @@ async fn test_bucket_default_sse_s3_put_object() -> Result<(), Box<dyn std::erro
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -159,7 +159,7 @@ async fn test_bucket_default_sse_kms_put_object() -> Result<(), Box<dyn std::err
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -278,7 +278,7 @@ async fn test_bucket_default_sse_kms_multipart_crc32() -> Result<(), Box<dyn std
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -475,7 +475,7 @@ async fn test_explicit_encryption_overrides_bucket_default() -> Result<(), Box<d
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -570,7 +570,7 @@ async fn test_sse_kms_without_key_id_populates_default() -> Result<(), Box<dyn s
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/e2e_test/src/kms/common.rs

@@ -189,34 +189,69 @@ pub async fn wait_for_kms_ready(
     access_key: &str,
     secret_key: &str,
 ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
-    let total_deadline = Duration::from_secs(5);
+    wait_for_kms_ready_with_timeout(base_url, access_key, secret_key, Duration::from_secs(5)).await
+}
+
+async fn wait_for_kms_ready_with_timeout(
+    base_url: &str,
+    access_key: &str,
+    secret_key: &str,
+    total_deadline: Duration,
+) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
     let start = tokio::time::Instant::now();
+    let deadline = start + total_deadline;
     let mut backoff = Duration::from_millis(200);
     let max_backoff = Duration::from_secs(1);
-    let mut first_attempt = true;
 
     loop {
-        if !first_attempt {
-            if start.elapsed() >= total_deadline {
-                return Err("KMS failed to become ready within 5 seconds".into());
-            }
-            sleep(backoff).await;
-            backoff = (backoff * 2).min(max_backoff);
-        }
-        first_attempt = false;
-
-        match get_kms_status(base_url, access_key, secret_key).await {
-            Ok(status) => {
+        match tokio::time::timeout_at(deadline, get_kms_status(base_url, access_key, secret_key)).await {
+            Ok(Ok(status)) => {
                 info!("KMS is ready (status: {})", status);
                 return Ok(());
             }
-            Err(e) => {
-                if start.elapsed() >= total_deadline {
-                    return Err(format!("KMS did not become ready within 5 s: last error: {e}").into());
-                }
-                warn!(error = %e, elapsed_ms = start.elapsed().as_millis() as u64, "KMS not ready yet, retrying…");
+            Ok(Err(e)) => {
+                let elapsed_ms = u64::try_from(start.elapsed().as_millis()).unwrap_or(u64::MAX);
+                warn!(error = %e, elapsed_ms, "KMS not ready yet, retrying…");
             }
+            Err(_) => return Err(format!("KMS failed to become ready within {} ms", total_deadline.as_millis()).into()),
         }
+
+        let now = tokio::time::Instant::now();
+        if now >= deadline {
+            return Err(format!("KMS failed to become ready within {} ms", total_deadline.as_millis()).into());
+        }
+        sleep((now + backoff).min(deadline) - now).await;
+        backoff = (backoff * 2).min(max_backoff);
+    }
+}
+
+#[cfg(test)]
+mod readiness_tests {
+    use super::wait_for_kms_ready_with_timeout;
+    use std::time::Duration;
+    use tokio::io::AsyncReadExt;
+    use tokio::net::TcpListener;
+
+    #[tokio::test]
+    async fn kms_readiness_deadline_covers_a_stalled_status_request() {
+        let listener = TcpListener::bind("127.0.0.1:0").await.expect("bind readiness test server");
+        let address = listener.local_addr().expect("read readiness test server address");
+        let server = tokio::spawn(async move {
+            let (mut socket, _) = listener.accept().await.expect("accept readiness request");
+            let mut request = [0_u8; 1024];
+            let _ = socket.read(&mut request).await.expect("read readiness request");
+            std::future::pending::<()>().await;
+        });
+
+        let result = tokio::time::timeout(
+            Duration::from_secs(1),
+            wait_for_kms_ready_with_timeout(&format!("http://{address}"), "access-key", "secret-key", Duration::from_millis(50)),
+        )
+        .await
+        .expect("readiness helper must enforce its own deadline");
+
+        server.abort();
+        assert!(result.is_err(), "a stalled status request must not outlive the readiness deadline");
     }
 }
 

crates/e2e_test/src/kms/copy_object_self_copy_sse_test.rs

@@ -61,7 +61,7 @@ async fn test_metadata_replace_self_copy_of_sse_object_stays_decryptable() {
         )
         .await
         .expect("failed to start RustFS with local KMS");
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     let client = kms_env.base_env.create_s3_client();
     // Deliberately an UNVERSIONED bucket: that is the branch where the store layer can service
@@ -160,7 +160,7 @@ async fn test_metadata_replace_self_copy_dropping_sse_rewrites_plaintext() {
         )
         .await
         .expect("failed to start RustFS with local KMS");
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     let client = kms_env.base_env.create_s3_client();
     // Unversioned, and deliberately WITHOUT a bucket default-encryption rule, so the copy below
@@ -256,7 +256,7 @@ async fn test_metadata_replace_self_copy_under_bucket_default_sse_stays_decrypta
         )
         .await
         .expect("failed to start RustFS with local KMS");
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     let client = kms_env.base_env.create_s3_client();
     let bucket = "copy-object-self-copy-bucket-default-sse-test";

crates/e2e_test/src/kms/copy_object_version_restore_sse_test.rs

@@ -56,7 +56,7 @@ async fn test_self_copy_of_historical_sse_s3_version_is_readable() {
         )
         .await
         .expect("failed to start RustFS with local KMS");
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     let client = kms_env.base_env.create_s3_client();
     let bucket = "copy-object-version-restore-sse-test";

crates/e2e_test/src/kms/encryption_metadata_test.rs

@@ -87,7 +87,7 @@ async fn test_head_reports_managed_metadata_for_sse_s3() -> Result<(), Box<dyn s
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -147,7 +147,7 @@ async fn test_head_reports_managed_metadata_for_sse_kms_and_copy() -> Result<(),
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -250,7 +250,7 @@ async fn test_multipart_upload_writes_encrypted_data() -> Result<(), Box<dyn std
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/e2e_test/src/kms/kms_comprehensive_test.rs

@@ -24,7 +24,6 @@ use super::common::{
     test_sse_kms_encryption, test_sse_s3_encryption,
 };
 use crate::common::{TEST_BUCKET, init_logging};
-use tokio::time::{Duration, sleep};
 use tracing::info;
 
 /// Comprehensive test: Full KMS workflow with all encryption types
@@ -35,7 +34,7 @@ async fn test_comprehensive_kms_full_workflow() -> Result<(), Box<dyn std::error
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -103,7 +102,7 @@ async fn test_comprehensive_stress_test() -> Result<(), Box<dyn std::error::Erro
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -137,7 +136,7 @@ async fn test_comprehensive_key_isolation() -> Result<(), Box<dyn std::error::Er
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -208,7 +207,7 @@ async fn test_comprehensive_concurrent_operations() -> Result<(), Box<dyn std::e
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -253,7 +252,7 @@ async fn test_comprehensive_performance_benchmark() -> Result<(), Box<dyn std::e
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/e2e_test/src/kms/kms_edge_cases_test.rs

@@ -44,7 +44,7 @@ async fn test_kms_zero_byte_file_encryption() -> Result<(), Box<dyn std::error::
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -117,7 +117,7 @@ async fn test_kms_single_byte_file_encryption() -> Result<(), Box<dyn std::error
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -209,7 +209,7 @@ async fn test_kms_multipart_boundary_conditions() -> Result<(), Box<dyn std::err
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -284,7 +284,7 @@ async fn test_kms_invalid_key_scenarios() -> Result<(), Box<dyn std::error::Erro
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -371,7 +371,7 @@ async fn test_kms_concurrent_encryption() -> Result<(), Box<dyn std::error::Erro
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = Arc::new(kms_env.base_env.create_s3_client());
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -478,7 +478,7 @@ async fn test_kms_key_validation_security() -> Result<(), Box<dyn std::error::Er
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/e2e_test/src/kms/kms_fault_recovery_test.rs

@@ -37,7 +37,7 @@ async fn test_kms_key_directory_unavailable() -> Result<(), Box<dyn std::error::
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -127,7 +127,7 @@ async fn test_kms_corrupted_key_files() -> Result<(), Box<dyn std::error::Error
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -218,7 +218,7 @@ async fn test_kms_multipart_upload_interruption() -> Result<(), Box<dyn std::err
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -401,7 +401,7 @@ async fn test_kms_resource_constraints() -> Result<(), Box<dyn std::error::Error
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/e2e_test/src/kms/kms_local_test.rs

@@ -46,7 +46,7 @@ async fn test_local_kms_end_to_end() -> Result<(), Box<dyn std::error::Error + S
         .expect("Failed to start RustFS with Local KMS");
 
     // Wait a moment for RustFS to fully start up and initialize KMS
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     info!("RustFS started with KMS auto-configuration, default_key_id: {}", default_key_id);
 
@@ -127,7 +127,7 @@ async fn test_local_kms_key_isolation() {
         .expect("Failed to start RustFS with Local KMS");
 
     // Wait a moment for RustFS to fully start up and initialize KMS
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     info!("RustFS started with KMS auto-configuration, default_key_id: {}", default_key_id);
 
@@ -227,7 +227,7 @@ async fn test_local_kms_large_file() {
         .expect("Failed to start RustFS with Local KMS");
 
     // Wait a moment for RustFS to fully start up and initialize KMS
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     info!("RustFS started with KMS auto-configuration, default_key_id: {}", default_key_id);
 
@@ -309,7 +309,7 @@ async fn test_local_kms_multipart_upload() {
         .expect("Failed to start RustFS with Local KMS");
 
     // Wait for KMS initialization
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await.expect("KMS ready");
 
     info!("RustFS started with KMS auto-configuration, default_key_id: {}", default_key_id);
 

crates/e2e_test/src/kms/kms_vault_test.rs

@@ -19,7 +19,6 @@
 //! multipart upload behaviour.
 
 use crate::common::{TEST_BUCKET, init_logging};
-use tokio::time::{Duration, sleep};
 use tracing::{error, info};
 
 use super::common::{
@@ -45,8 +44,8 @@ impl VaultKmsTestContext {
 
         start_kms(&env.base_env.url, &env.base_env.access_key, &env.base_env.secret_key).await?;
 
-        // Allow Vault to finish initialising token auth and transit engine.
-        sleep(Duration::from_secs(2)).await;
+        // Wait for KMS to finish initialising.
+        super::common::wait_for_kms_ready(&env.base_env.url, &env.base_env.access_key, &env.base_env.secret_key).await?;
 
         Ok(Self { env })
     }

crates/e2e_test/src/kms/multipart_encryption_test.rs

@@ -33,7 +33,7 @@ async fn test_step1_basic_single_file_encryption() -> Result<(), Box<dyn std::er
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -89,7 +89,7 @@ async fn test_step2_basic_multipart_upload_without_encryption() -> Result<(), Bo
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -187,7 +187,7 @@ async fn test_step3_multipart_upload_with_sse_s3() -> Result<(), Box<dyn std::er
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -310,7 +310,7 @@ async fn test_step4_large_multipart_upload_with_encryption() -> Result<(), Box<d
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;
@@ -435,7 +435,7 @@ async fn test_step5_all_encryption_types_multipart() -> Result<(), Box<dyn std::
 
     let mut kms_env = LocalKMSTestEnvironment::new().await?;
     let _default_key_id = kms_env.start_rustfs_for_local_kms().await?;
-    tokio::time::sleep(tokio::time::Duration::from_secs(3)).await;
+    kms_env.wait_for_kms_ready().await?;
 
     let s3_client = kms_env.base_env.create_s3_client();
     kms_env.base_env.create_test_bucket(TEST_BUCKET).await?;

crates/ecstore/src/core/pools.rs

@@ -3275,9 +3275,6 @@ impl ECStore {
             )
             .await?;
 
-            let source_cleanup_mutation_fence = self
-                .acquire_decommission_source_cleanup_fence(bucket.as_str(), entry.name.as_str(), set.as_ref())
-                .await?;
             let cleanup_result = data_movement::cleanup_source_entry_if_unchanged(
                 set.clone(),
                 bucket.as_str(),
@@ -3289,7 +3286,6 @@ impl ECStore {
                     lifecycle_guard: bucket_incarnation_fence
                         .as_ref()
                         .and_then(|guard| guard.namespace_lock_guard()),
-                    object_mutation_fence: Some(&source_cleanup_mutation_fence),
                 },
                 "decommission",
             )
@@ -3383,22 +3379,6 @@ impl ECStore {
         Ok(())
     }
 
-    #[cfg(test)]
-    pub(crate) async fn decommission_entry_for_test(
-        self: &Arc<Self>,
-        idx: usize,
-        entry: MetaCacheEntry,
-        bucket: String,
-        set: Arc<SetDisks>,
-    ) -> Result<()> {
-        let worker_permit = Arc::new(Semaphore::new(1))
-            .acquire_owned()
-            .await
-            .map_err(|err| Error::other(format!("decommission test worker permit acquire failed: {err}")))?;
-        self.decommission_entry(CancellationToken::new(), idx, entry, bucket, set, worker_permit, None, None, None, None)
-            .await
-    }
-
     #[tracing::instrument(skip(self, rx))]
     async fn decommission_pool(
         self: &Arc<Self>,
@@ -4334,20 +4314,15 @@ impl ECStore {
     ) -> Result<()> {
         warn!("decommission_object: start {} {}", &bucket, &rd.object_info.name);
         let object_name = rd.object_info.name.clone();
-        let mut migration = tokio::task::JoinSet::new();
-        migration.spawn(data_movement::migrate_decommission_object(
+        let result = data_movement::migrate_object(
             self,
             pool_idx,
             bucket.clone(),
             rd,
             expected_bucket_incarnation_id,
             "decommission_object",
-        ));
-        let result = migration
-            .join_next()
-            .await
-            .ok_or_else(|| Error::other("decommission migration task was not started"))?
-            .map_err(|err| Error::other(format!("decommission migration task join error: {err}")))?;
+        )
+        .await;
         if result.is_ok() {
             warn!("decommission_object: migrated {} {}", &bucket, &object_name);
         }

crates/ecstore/src/data_movement/mod.rs

@@ -26,7 +26,7 @@ use crate::storage_api_contracts::{
     namespace::NamespaceLocking as _,
     object::{HTTPPreconditions, ObjectOperations as _},
 };
-use crate::store::{ECStore, ObjectLockDiagGuard, SourceCleanupMutationFence};
+use crate::store::ECStore;
 use bytes::Bytes;
 use rustfs_filemeta::{FileInfo, FileInfoVersions, ObjectPartInfo};
 use rustfs_rio::{EtagResolvable, HashReader, HashReaderDetector, Index, TryGetIndex};
@@ -856,6 +856,7 @@ fn is_equivalent_data_movement_object(source: &ObjectInfo, target: &ObjectInfo)
 fn is_superseding_unversioned_data_movement_object(source: &ObjectInfo, target: &ObjectInfo) -> bool {
     is_unversioned_data_movement_object(source)
         && is_unversioned_data_movement_object(target)
+        && !target.delete_marker
         && source
             .mod_time
             .zip(target.mod_time)
@@ -1027,7 +1028,6 @@ pub(crate) enum SourceCleanupError {
 pub(crate) struct SourceCleanupBucketFence<'a> {
     pub(crate) expected_incarnation_id: Option<uuid::Uuid>,
     pub(crate) lifecycle_guard: Option<&'a rustfs_lock::NamespaceLockGuard>,
-    pub(crate) object_mutation_fence: Option<&'a SourceCleanupMutationFence>,
 }
 
 fn ensure_source_cleanup_versions_match(
@@ -1065,9 +1065,7 @@ pub(crate) async fn ensure_source_cleanup_versions_unchanged(
 struct SourceCleanupDeleteBarrierState {
     bucket: String,
     object: String,
-    fence_pending: tokio::sync::Notify,
     arrived: tokio::sync::Notify,
-    is_paused: AtomicBool,
     release: tokio::sync::Notify,
 }
 
@@ -1081,7 +1079,7 @@ pub(crate) struct SourceCleanupDeleteBarrier {
 }
 
 #[cfg(test)]
-static SOURCE_CLEANUP_DELETE_BARRIERS: std::sync::OnceLock<std::sync::Mutex<Vec<Arc<SourceCleanupDeleteBarrierState>>>> =
+static SOURCE_CLEANUP_DELETE_BARRIER: std::sync::OnceLock<std::sync::Mutex<Option<Arc<SourceCleanupDeleteBarrierState>>>> =
     std::sync::OnceLock::new();
 
 #[cfg(test)]
@@ -1094,22 +1092,15 @@ impl SourceCleanupDeleteBarrier {
         let state = Arc::new(SourceCleanupDeleteBarrierState {
             bucket: bucket.to_string(),
             object: object.to_string(),
-            fence_pending: tokio::sync::Notify::new(),
             arrived: tokio::sync::Notify::new(),
-            is_paused: AtomicBool::new(false),
             release: tokio::sync::Notify::new(),
         });
-        let mut barriers = SOURCE_CLEANUP_DELETE_BARRIERS
-            .get_or_init(|| std::sync::Mutex::new(Vec::new()))
+        let mut slot = SOURCE_CLEANUP_DELETE_BARRIER
+            .get_or_init(|| std::sync::Mutex::new(None))
             .lock()
             .expect("source cleanup delete barrier mutex should not poison");
-        assert!(
-            !barriers
-                .iter()
-                .any(|barrier| barrier.bucket == bucket && barrier.object == object),
-            "source cleanup delete barrier must be unique per object"
-        );
-        barriers.push(Arc::clone(&state));
+        assert!(slot.is_none(), "source cleanup delete barrier must be unique");
+        *slot = Some(Arc::clone(&state));
         Self { state }
     }
 
@@ -1119,58 +1110,35 @@ impl SourceCleanupDeleteBarrier {
             .expect("source cleanup should reach the pre-delete barrier");
     }
 
-    pub(crate) async fn wait_until_fence_pending(&self) {
-        tokio::time::timeout(StdDuration::from_secs(30), self.state.fence_pending.notified())
-            .await
-            .expect("source cleanup should attempt the fixed mutation fence");
-    }
-
-    pub(crate) fn is_paused(&self) -> bool {
-        self.state.is_paused.load(Ordering::Acquire)
-    }
-
     pub(crate) fn release(&self) {
         self.state.release.notify_one();
     }
 }
 
-#[cfg(test)]
-pub(crate) fn notify_source_cleanup_mutation_fence_pending(bucket: &str, object: &str) {
-    let barrier = SOURCE_CLEANUP_DELETE_BARRIERS
-        .get_or_init(|| std::sync::Mutex::new(Vec::new()))
-        .lock()
-        .expect("source cleanup delete barrier mutex should not poison")
-        .iter()
-        .find(|barrier| barrier.bucket == bucket && barrier.object == object)
-        .cloned();
-    if let Some(barrier) = barrier {
-        barrier.fence_pending.notify_one();
-    }
-}
-
 #[cfg(test)]
 impl Drop for SourceCleanupDeleteBarrier {
     fn drop(&mut self) {
         self.state.release.notify_one();
-        let mut barriers = SOURCE_CLEANUP_DELETE_BARRIERS
-            .get_or_init(|| std::sync::Mutex::new(Vec::new()))
+        let mut slot = SOURCE_CLEANUP_DELETE_BARRIER
+            .get_or_init(|| std::sync::Mutex::new(None))
             .lock()
             .expect("source cleanup delete barrier mutex should not poison");
-        barriers.retain(|state| !Arc::ptr_eq(state, &self.state));
+        if slot.as_ref().is_some_and(|state| Arc::ptr_eq(state, &self.state)) {
+            *slot = None;
+        }
     }
 }
 
 #[cfg(test)]
 async fn pause_source_cleanup_before_delete(bucket: &str, object: &str) {
-    let barrier = SOURCE_CLEANUP_DELETE_BARRIERS
-        .get_or_init(|| std::sync::Mutex::new(Vec::new()))
+    let barrier = SOURCE_CLEANUP_DELETE_BARRIER
+        .get_or_init(|| std::sync::Mutex::new(None))
         .lock()
         .expect("source cleanup delete barrier mutex should not poison")
-        .iter()
-        .find(|barrier| barrier.bucket == bucket && barrier.object == object)
+        .as_ref()
+        .filter(|barrier| barrier.bucket == bucket && barrier.object == object)
         .cloned();
     if let Some(barrier) = barrier {
-        barrier.is_paused.store(true, Ordering::Release);
         barrier.arrived.notify_one();
         barrier.release.notified().await;
     }
@@ -1186,20 +1154,11 @@ pub(crate) async fn cleanup_source_entry_if_unchanged(
     op_label: &str,
 ) -> std::result::Result<ObjectInfo, SourceCleanupError> {
     let cleanup_key = encode_dir_object(object);
-    let source_guard = if bucket_fence
-        .object_mutation_fence
-        .is_some_and(SourceCleanupMutationFence::source_lock_covered)
-    {
-        None
-    } else {
-        let ns_lock = set.new_ns_lock(bucket, cleanup_key.as_str()).await?;
-        Some(
-            ns_lock
-                .get_write_lock(get_lock_acquire_timeout())
-                .await
-                .map_err(Error::from)?,
-        )
-    };
+    let ns_lock = set.new_ns_lock(bucket, cleanup_key.as_str()).await?;
+    let _guard = ns_lock
+        .get_write_lock(get_lock_acquire_timeout())
+        .await
+        .map_err(Error::from)?;
 
     if bucket_fence
         .lifecycle_guard
@@ -1209,14 +1168,6 @@ pub(crate) async fn cleanup_source_entry_if_unchanged(
             "{op_label}: bucket incarnation fence was lost before source cleanup"
         ))));
     }
-    if bucket_fence
-        .object_mutation_fence
-        .is_some_and(SourceCleanupMutationFence::is_lock_lost)
-    {
-        return Err(SourceCleanupError::Storage(Error::other(format!(
-            "{op_label}: object mutation fence was lost before source cleanup"
-        ))));
-    }
 
     ensure_source_cleanup_versions_unchanged(set.clone(), bucket, object, expected, allowed_missing, op_label).await?;
 
@@ -1231,12 +1182,7 @@ pub(crate) async fn cleanup_source_entry_if_unchanged(
         expected_bucket_incarnation_id: bucket_fence.expected_incarnation_id,
         ..Default::default()
     };
-    if let Some(source_guard) = source_guard.as_ref() {
-        opts.add_namespace_lock_guard(source_guard);
-    }
-    if let Some(object_mutation_fence) = bucket_fence.object_mutation_fence {
-        object_mutation_fence.add_namespace_lock_fence(&mut opts);
-    }
+    opts.add_namespace_lock_guard(&_guard);
     if let Some(bucket_lifecycle_guard) = bucket_fence.lifecycle_guard {
         opts.add_bucket_lifecycle_lock_guard(bucket_lifecycle_guard);
     }
@@ -1384,37 +1330,6 @@ fn data_movement_part_upload_failure_stage(err: &Error) -> &'static str {
     }
 }
 
-pub(crate) async fn migrate_decommission_object(
-    store: Arc<ECStore>,
-    pool_idx: usize,
-    bucket: String,
-    rd: GetObjectReader,
-    source_bucket_incarnation_id: Option<uuid::Uuid>,
-    op_label: &str,
-) -> Result<()> {
-    let source = rd.object_info.clone();
-    let _mutation_fence = store
-        .acquire_decommission_object_mutation_fence(&bucket, &source.name)
-        .await?;
-    let current = find_data_movement_target_info(store.as_ref(), pool_idx, &bucket, &source)
-        .await?
-        .ok_or(Error::FileNotFound)?;
-    if !is_equivalent_data_movement_object_identity(&source, &current, true, false) {
-        return Err(Error::FileNotFound);
-    }
-
-    migrate_object_inner(
-        store,
-        pool_idx,
-        bucket,
-        rd,
-        source_bucket_incarnation_id,
-        op_label,
-        Some(&_mutation_fence),
-    )
-    .await
-}
-
 pub(crate) async fn migrate_object(
     store: Arc<ECStore>,
     pool_idx: usize,
@@ -1422,18 +1337,6 @@ pub(crate) async fn migrate_object(
     rd: GetObjectReader,
     source_bucket_incarnation_id: Option<uuid::Uuid>,
     op_label: &str,
-) -> Result<()> {
-    migrate_object_inner(store, pool_idx, bucket, rd, source_bucket_incarnation_id, op_label, None).await
-}
-
-async fn migrate_object_inner(
-    store: Arc<ECStore>,
-    pool_idx: usize,
-    bucket: String,
-    rd: GetObjectReader,
-    source_bucket_incarnation_id: Option<uuid::Uuid>,
-    op_label: &str,
-    mutation_fence: Option<&ObjectLockDiagGuard>,
 ) -> Result<()> {
     let object_info = rd.object_info.clone();
     let has_part_checksums = object_info
@@ -1447,7 +1350,7 @@ async fn migrate_object_inner(
         let mut new_multipart_opts = data_movement_new_multipart_opts(&object_info, pool_idx);
         new_multipart_opts.expected_bucket_incarnation_id = source_bucket_incarnation_id;
         let (res, target_pool_idx, expected_bucket_incarnation_id) = match store
-            .handle_new_multipart_upload_with_pool_idx(&bucket, &object_info.name, &new_multipart_opts, mutation_fence)
+            .handle_new_multipart_upload_with_pool_idx(&bucket, &object_info.name, &new_multipart_opts)
             .await
         {
             Ok(res) => res,
@@ -1545,7 +1448,7 @@ async fn migrate_object_inner(
             if let Err(err) = store
                 .clone()
                 .complete_multipart_upload_for_data_movement(
-                    (target_pool_idx, mutation_fence),
+                    target_pool_idx,
                     &bucket,
                     &object_info.name,
                     &res.upload_id,
@@ -1706,7 +1609,7 @@ async fn migrate_object_inner(
     let mut put_opts = data_movement_put_object_opts(&object_info, pool_idx);
     put_opts.expected_bucket_incarnation_id = source_bucket_incarnation_id;
     let (target_pool_idx, put_result) = store
-        .put_object_for_data_movement(&bucket, &object_info.name, &mut data, &put_opts, mutation_fence)
+        .put_object_for_data_movement(&bucket, &object_info.name, &mut data, &put_opts)
         .await
         .map_err(|err| data_movement_stage_error(op_label, "prepare_put_object", &bucket, &object_info.name, err))?;
     if let Err(err) = put_result {
@@ -3638,47 +3541,25 @@ mod tests {
     }
 
     #[test]
-    fn test_precondition_conflict_accepts_only_newer_null_delete_marker() {
-        for version_id in [None, Some(Uuid::nil())] {
-            let source = ObjectInfo {
-                version_id,
-                size: 128,
-                etag: Some("etag-source".to_string()),
-                mod_time: Some(OffsetDateTime::UNIX_EPOCH),
-                ..Default::default()
-            };
-            let target = ObjectInfo {
-                delete_marker: true,
-                etag: None,
-                mod_time: OffsetDateTime::UNIX_EPOCH.checked_add(time::Duration::SECOND),
-                ..source.clone()
-            };
+    fn test_precondition_conflict_rejects_newer_delete_marker() {
+        let source = ObjectInfo {
+            size: 128,
+            etag: Some("etag-source".to_string()),
+            mod_time: Some(OffsetDateTime::UNIX_EPOCH),
+            ..Default::default()
+        };
+        let target = ObjectInfo {
+            delete_marker: true,
+            etag: None,
+            mod_time: OffsetDateTime::UNIX_EPOCH.checked_add(time::Duration::SECOND),
+            ..source.clone()
+        };
 
-            assert!(
-                resolve_data_movement_overwrite_resume_result(
-                    &Error::PreconditionFailed,
-                    Ok(Some(target.clone())),
-                    &source,
-                    0,
-                    1,
-                )
-                .expect("newer null delete marker should be evaluated")
-            );
+        let should_resume =
+            resolve_data_movement_overwrite_resume_result(&Error::PreconditionFailed, Ok(Some(target)), &source, 0, 1)
+                .expect("delete marker conflict should be evaluated");
 
-            let mut same_time = target.clone();
-            same_time.mod_time = source.mod_time;
-            assert!(
-                !resolve_data_movement_overwrite_resume_result(&Error::PreconditionFailed, Ok(Some(same_time)), &source, 0, 1,)
-                    .expect("same-generation null delete marker should be rejected")
-            );
-
-            let mut versioned = target;
-            versioned.version_id = Some(Uuid::new_v4());
-            assert!(
-                !resolve_data_movement_overwrite_resume_result(&Error::PreconditionFailed, Ok(Some(versioned)), &source, 0, 1,)
-                    .expect("a UUID delete marker must not erase a null source version")
-            );
-        }
+        assert!(!should_resume);
     }
 
     #[test]

crates/ecstore/src/disk/local.rs

@@ -858,7 +858,6 @@ const EVENT_DISK_LOCAL_DIRECT_IO_FALLBACK: &str = "disk_local_direct_io_fallback
 #[cfg(target_os = "linux")]
 const EVENT_DISK_LOCAL_URING_LATCH_OFF: &str = "disk_local_uring_latch_off";
 const EVENT_DISK_LOCAL_DELETE_FAILED: &str = "disk_local_delete_failed";
-const EVENT_DISK_LOCAL_DELETE_ROLLBACK_FAILED: &str = "disk_local_delete_rollback_failed";
 const EVENT_DISK_LOCAL_CHECK_PARTS: &str = "disk_local_check_parts";
 const EVENT_DISK_LOCAL_ACCESS_FAILED: &str = "disk_local_access_failed";
 const EVENT_DISK_LOCAL_VOLUME_SETUP_FAILED: &str = "disk_local_volume_setup_failed";
@@ -6107,43 +6106,6 @@ impl LocalDisk {
         Ok((bytes, modtime))
     }
 
-    async fn write_missing_delete_marker(
-        &self,
-        volume: &str,
-        path: &str,
-        fi: FileInfo,
-        object_dir: &Path,
-        xl_path: &Path,
-        rollback_dir: Option<Uuid>,
-    ) -> Result<()> {
-        if let Some(rollback_dir) = rollback_dir {
-            let rollback_path = object_dir.join(rollback_dir.to_string());
-            fs::create_dir_all(&rollback_path).await.map_err(to_file_error)?;
-            fs::write(rollback_path.join(DELETE_MARKER_ROLLBACK_FILE), [])
-                .await
-                .map_err(to_file_error)?;
-        }
-        if let Err(err) = self.write_metadata("", volume, path, fi).await {
-            if let Some(rollback_dir) = rollback_dir
-                && let Err(restore_err) = restore_delete_rollback(object_dir, xl_path, rollback_dir, &self.publication_root).await
-            {
-                warn!(
-                    event = EVENT_DISK_LOCAL_DELETE_ROLLBACK_FAILED,
-                    component = LOG_COMPONENT_ECSTORE,
-                    subsystem = LOG_SUBSYSTEM_DISK_LOCAL,
-                    result = "failed",
-                    volume,
-                    path,
-                    rollback_dir = %rollback_dir,
-                    error = ?restore_err,
-                    "Disk local delete rollback failed"
-                );
-            }
-            return Err(err);
-        }
-        Ok(())
-    }
-
     async fn delete_versions_internal(&self, volume: &str, path: &str, fis: &[FileInfo], opts: &DeleteOptions) -> Result<()> {
         let volume_dir = self.io_get_bucket_path(volume)?;
         let xlpath = self.io_get_object_path(volume, format!("{path}/{STORAGE_FORMAT_FILE}").as_str())?;
@@ -6161,20 +6123,7 @@ impl LocalDisk {
             return restore_metadata_backup(object_dir, &xlpath, rollback_dir, &self.publication_root).await;
         }
 
-        let (data, _) = match self.read_all_data_with_dmtime(volume, volume_dir.as_path(), &xlpath).await {
-            Ok(data) => data,
-            Err(DiskError::FileNotFound) => {
-                // `deleted` alone can be an explicit marker purge; only
-                // `mark_deleted` may create metadata that was not present.
-                let Some(delete_marker) = fis.iter().find(|fi| fi.deleted && fi.mark_deleted).cloned() else {
-                    return Err(DiskError::FileNotFound);
-                };
-                return self
-                    .write_missing_delete_marker(volume, path, delete_marker, object_dir, &xlpath, opts.old_data_dir)
-                    .await;
-            }
-            Err(err) => return Err(err),
-        };
+        let (data, _) = self.read_all_data_with_dmtime(volume, volume_dir.as_path(), &xlpath).await?;
 
         if data.is_empty() {
             return Err(DiskError::FileNotFound);
@@ -10473,9 +10422,29 @@ impl DiskAPI for LocalDisk {
                 }
 
                 if fi.deleted && force_del_marker {
-                    return self
-                        .write_missing_delete_marker(volume, path, fi, file_path.as_path(), &xl_path, rollback_dir)
-                        .await;
+                    if let Some(rollback_dir) = rollback_dir {
+                        let rollback_path = file_path.join(rollback_dir.to_string());
+                        fs::create_dir_all(&rollback_path).await.map_err(to_file_error)?;
+                        fs::write(rollback_path.join(DELETE_MARKER_ROLLBACK_FILE), [])
+                            .await
+                            .map_err(to_file_error)?;
+                    }
+                    if let Err(err) = self.write_metadata("", volume, path, fi).await {
+                        if let Some(rollback_dir) = rollback_dir
+                            && let Err(restore_err) =
+                                restore_delete_rollback(file_path.as_path(), &xl_path, rollback_dir, &self.publication_root).await
+                        {
+                            warn!(
+                                volume,
+                                path,
+                                rollback_dir = %rollback_dir,
+                                error = ?restore_err,
+                                "failed to restore metadata after delete marker commit error"
+                            );
+                        }
+                        return Err(err);
+                    }
+                    return Ok(());
                 }
 
                 return if fi.version_id.is_some() {

crates/ecstore/src/object_api/types.rs

@@ -24,7 +24,7 @@ use crate::storage_api_contracts::{
 pub struct NamespaceLockFence {
     signals: Arc<Vec<Arc<rustfs_lock::distributed_lock::LockLostSignal>>>,
     #[cfg(test)]
-    forced_lost: Arc<Vec<Arc<std::sync::atomic::AtomicBool>>>,
+    forced_lost: Arc<std::sync::atomic::AtomicBool>,
 }
 
 impl Debug for NamespaceLockFence {
@@ -40,17 +40,13 @@ impl NamespaceLockFence {
         Self {
             signals: Arc::default(),
             #[cfg(test)]
-            forced_lost: Arc::new(vec![Arc::new(std::sync::atomic::AtomicBool::new(false))]),
+            forced_lost: Arc::new(std::sync::atomic::AtomicBool::new(false)),
         }
     }
 
     pub(crate) fn is_lock_lost(&self) -> bool {
         #[cfg(test)]
-        if self
-            .forced_lost
-            .iter()
-            .any(|lost| lost.load(std::sync::atomic::Ordering::Acquire))
-        {
+        if self.forced_lost.load(std::sync::atomic::Ordering::Acquire) {
             return true;
         }
         self.signals.iter().any(|signal| signal.is_lost())
@@ -61,26 +57,27 @@ impl NamespaceLockFence {
     }
 
     fn extend(&mut self, other: &Self) {
-        if !Arc::ptr_eq(&self.signals, &other.signals) {
-            Arc::make_mut(&mut self.signals).extend(other.signals.iter().cloned());
+        if Arc::ptr_eq(&self.signals, &other.signals) {
+            return;
         }
+        Arc::make_mut(&mut self.signals).extend(other.signals.iter().cloned());
         #[cfg(test)]
-        if !Arc::ptr_eq(&self.forced_lost, &other.forced_lost) {
-            Arc::make_mut(&mut self.forced_lost).extend(other.forced_lost.iter().cloned());
+        if other.forced_lost.load(std::sync::atomic::Ordering::Acquire) {
+            self.forced_lost.store(true, std::sync::atomic::Ordering::Release);
         }
     }
 
     #[cfg(test)]
     pub(crate) fn lost_for_test() -> Self {
         let fence = Self::new();
-        fence.forced_lost[0].store(true, std::sync::atomic::Ordering::Release);
+        fence.forced_lost.store(true, std::sync::atomic::Ordering::Release);
         fence
     }
 
     #[cfg(test)]
     pub(crate) fn loss_handle_for_test() -> (Self, Arc<std::sync::atomic::AtomicBool>) {
         let fence = Self::new();
-        (fence.clone(), Arc::clone(&fence.forced_lost[0]))
+        (fence.clone(), Arc::clone(&fence.forced_lost))
     }
 }
 
@@ -414,13 +411,6 @@ impl ObjectOptions {
         self.namespace_lock_fence.get_or_insert_with(NamespaceLockFence::new);
     }
 
-    #[cfg(test)]
-    pub(crate) fn add_namespace_lock_fence_for_test(&mut self, fence: &NamespaceLockFence) {
-        self.namespace_lock_fence
-            .get_or_insert_with(NamespaceLockFence::new)
-            .extend(fence);
-    }
-
     pub(crate) fn ensure_lifecycle_delete_all_journal(&mut self) {
         self.lifecycle_delete_all_journal
             .get_or_insert_with(|| Arc::new(parking_lot::Mutex::new(LifecycleDeleteAllJournalState::default())));

crates/ecstore/src/services/rebalance/entry.rs

@@ -334,7 +334,6 @@ impl ECStore {
                             lifecycle_guard: bucket_incarnation_fence
                                 .as_ref()
                                 .and_then(|guard| guard.namespace_lock_guard()),
-                            ..Default::default()
                         },
                         "rebalance",
                     ),

crates/ecstore/src/set_disk/mod.rs

@@ -735,12 +735,8 @@ pub(crate) use core::io_primitives::disk_call_counters;
 mod ctx;
 mod metadata;
 mod ops;
-#[cfg(test)]
-pub(crate) use ops::multipart::NewMultipartUploadCommitObservation;
 #[cfg(any(test, feature = "test-util"))]
 pub use ops::multipart::{MultipartCommitBarrier, MultipartCommitPause};
-#[cfg(test)]
-pub(crate) use ops::object::DeleteObjectCommitBarrier;
 #[cfg(feature = "test-util")]
 pub(crate) use ops::object::TransitionCleanupStoreBarrier as SetDiskTransitionCleanupStoreBarrier;
 pub(crate) use ops::object::body_cache_plaintext_len;
@@ -3029,16 +3025,6 @@ pub struct SetDisks {
     storage_class_config_override: Arc<std::sync::RwLock<Option<Arc<storageclass::Config>>>>,
 }
 
-// DistributedLock sends the raw ObjectKey to its clients; LockRegistry clones
-// each endpoint's canonical Arc, so an exact Arc set identifies the lock domain.
-pub(crate) fn same_distributed_lock_domain(left: &[Arc<dyn LockClient>], right: &[Arc<dyn LockClient>]) -> bool {
-    left.iter()
-        .all(|left_client| right.iter().any(|right_client| Arc::ptr_eq(left_client, right_client)))
-        && right
-            .iter()
-            .all(|right_client| left.iter().any(|left_client| Arc::ptr_eq(left_client, right_client)))
-}
-
 const ERASURE_CACHE_MAX_ENTRIES: usize = 32;
 
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
@@ -3614,15 +3600,6 @@ impl SetDisks {
         &self.ctx
     }
 
-    /// Whether both sets' namespace-lock implementations cover the same object key.
-    pub(crate) async fn shares_namespace_lock_domain(&self, other: &Self) -> bool {
-        match (self.ctx.is_dist_erasure().await, other.ctx.is_dist_erasure().await) {
-            (false, false) => Arc::ptr_eq(&self.local_lock_manager, &other.local_lock_manager),
-            (true, true) => same_distributed_lock_domain(&self.lockers, &other.lockers),
-            _ => false,
-        }
-    }
-
     /// The lock manager this set actually uses (test-only; Phase 5 Slice 3).
     #[cfg(test)]
     pub(crate) fn local_lock_manager_for_test(&self) -> &Arc<rustfs_lock::GlobalLockManager> {
@@ -4607,11 +4584,11 @@ fn should_preserve_delete_replication_state(opts: &ObjectOptions) -> bool {
 }
 
 fn should_force_delete_marker_for_missing_version(opts: &ObjectOptions) -> bool {
-    opts.delete_marker || ((opts.versioned || opts.version_suspended) && opts.version_id.is_none() && !opts.data_movement)
+    opts.delete_marker || (opts.versioned && opts.version_id.is_none() && !opts.data_movement)
 }
 
 fn resolve_delete_version_state(opts: &ObjectOptions, goi: &ObjectInfo, version_found: bool) -> (bool, bool) {
-    let mut mark_delete = goi.version_id.is_some() || ((opts.versioned || opts.version_suspended) && opts.version_id.is_none());
+    let mut mark_delete = goi.version_id.is_some() || (opts.versioned && opts.version_id.is_none());
     let mut delete_marker = opts.versioned;
 
     if opts.version_id.is_some() {

crates/ecstore/src/set_disk/ops/multipart.rs

@@ -32,8 +32,6 @@ use crate::crash_inject::{self, CrashPoint};
 use crate::multipart_listing::paginate_multipart_listing;
 use futures::{StreamExt, stream};
 use std::future::Future;
-#[cfg(test)]
-use std::sync::atomic::AtomicBool;
 #[cfg(any(test, feature = "test-util"))]
 use std::sync::atomic::{AtomicUsize, Ordering};
 use std::time::Duration;
@@ -67,7 +65,6 @@ impl StaleMultipartCleanupGuard {
 #[cfg(any(test, feature = "test-util"))]
 #[derive(Clone, Copy, PartialEq, Eq)]
 pub enum MultipartCommitPause {
-    NewUploadBeforeLockLost,
     PutPartBeforeLockAcquire,
     PutPartBeforeLockLost,
     PutPartAfterRename,
@@ -159,72 +156,6 @@ impl Drop for MultipartCommitBarrier {
     }
 }
 
-#[cfg(test)]
-struct NewMultipartUploadCommitObservationState {
-    bucket: String,
-    object: String,
-    committed: AtomicBool,
-}
-
-#[cfg(test)]
-pub(crate) struct NewMultipartUploadCommitObservation {
-    state: Arc<NewMultipartUploadCommitObservationState>,
-}
-
-#[cfg(test)]
-static NEW_MULTIPART_UPLOAD_COMMIT_OBSERVATION: std::sync::OnceLock<
-    std::sync::Mutex<Option<Arc<NewMultipartUploadCommitObservationState>>>,
-> = std::sync::OnceLock::new();
-
-#[cfg(test)]
-impl NewMultipartUploadCommitObservation {
-    pub(crate) fn install(bucket: &str, object: &str) -> Self {
-        let state = Arc::new(NewMultipartUploadCommitObservationState {
-            bucket: bucket.to_string(),
-            object: object.to_string(),
-            committed: AtomicBool::new(false),
-        });
-        let mut slot = NEW_MULTIPART_UPLOAD_COMMIT_OBSERVATION
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("new multipart upload commit observation mutex should not poison");
-        assert!(slot.is_none(), "new multipart upload commit observation must be unique");
-        *slot = Some(Arc::clone(&state));
-        Self { state }
-    }
-
-    pub(crate) fn committed(&self) -> bool {
-        self.state.committed.load(Ordering::Acquire)
-    }
-}
-
-#[cfg(test)]
-impl Drop for NewMultipartUploadCommitObservation {
-    fn drop(&mut self) {
-        let mut slot = NEW_MULTIPART_UPLOAD_COMMIT_OBSERVATION
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("new multipart upload commit observation mutex should not poison");
-        if slot.as_ref().is_some_and(|state| Arc::ptr_eq(state, &self.state)) {
-            *slot = None;
-        }
-    }
-}
-
-#[cfg(test)]
-fn observe_new_multipart_upload_commit(bucket: &str, object: &str) {
-    let state = NEW_MULTIPART_UPLOAD_COMMIT_OBSERVATION
-        .get_or_init(|| std::sync::Mutex::new(None))
-        .lock()
-        .expect("new multipart upload commit observation mutex should not poison")
-        .as_ref()
-        .filter(|state| state.bucket == bucket && state.object == object)
-        .cloned();
-    if let Some(state) = state {
-        state.committed.store(true, Ordering::Release);
-    }
-}
-
 #[cfg(any(test, feature = "test-util"))]
 async fn pause_multipart_commit(bucket: &str, object: &str, pause: MultipartCommitPause) {
     let barrier = {
@@ -1684,30 +1615,6 @@ impl crate::storage_api_contracts::multipart::MultipartOperations for SetDisks {
 
         let upload_path = Self::get_multipart_upload_dir(bucket, object, upload_uuid.as_str(), opts.data_movement);
 
-        #[cfg(any(test, feature = "test-util"))]
-        pause_multipart_commit(bucket, object, MultipartCommitPause::NewUploadBeforeLockLost).await;
-        if _object_lock_guard.as_ref().is_some_and(|guard| guard.is_lock_lost()) {
-            return Err(StorageError::NamespaceLockQuorumUnavailable {
-                mode: "new_multipart_upload_commit",
-                bucket: bucket.to_string(),
-                object: object.to_string(),
-                required: 1,
-                achieved: 0,
-            });
-        }
-        if opts
-            .namespace_lock_fence
-            .as_ref()
-            .is_some_and(NamespaceLockFence::is_lock_lost)
-        {
-            return Err(StorageError::NamespaceLockQuorumUnavailable {
-                mode: "new_multipart_upload_outer_lock",
-                bucket: bucket.to_string(),
-                object: object.to_string(),
-                required: 1,
-                achieved: 0,
-            });
-        }
         ensure_multipart_bucket_lifecycle_lock_held(bucket, object, opts)?;
         Self::write_unique_file_info(
             &shuffle_disks,
@@ -1719,8 +1626,6 @@ impl crate::storage_api_contracts::multipart::MultipartOperations for SetDisks {
         )
         .await
         .map_err(|e| to_object_err(e.into(), vec![bucket, object]))?;
-        #[cfg(test)]
-        observe_new_multipart_upload_commit(bucket, object);
 
         // evalDisks
 

crates/ecstore/src/set_disk/ops/object.rs

@@ -2483,7 +2483,6 @@ impl SetDisks {
                         })
                         .await?,
                     );
-                    notify_put_object_commit_namespace_acquired(bucket, object);
                 }
                 #[cfg(not(any(test, feature = "test-util")))]
                 {
@@ -4631,7 +4630,6 @@ struct PutObjectCommitBarrierState {
     arrived: tokio::sync::Notify,
     release: tokio::sync::Notify,
     namespace_pending: tokio::sync::Notify,
-    namespace_acquired: std::sync::atomic::AtomicBool,
 }
 
 #[cfg(any(test, feature = "test-util"))]
@@ -4653,7 +4651,6 @@ impl PutObjectCommitBarrier {
             arrived: tokio::sync::Notify::new(),
             release: tokio::sync::Notify::new(),
             namespace_pending: tokio::sync::Notify::new(),
-            namespace_acquired: std::sync::atomic::AtomicBool::new(false),
         });
         let mut slot = PUT_OBJECT_COMMIT_BARRIER
             .get_or_init(|| std::sync::Mutex::new(Vec::new()))
@@ -4688,10 +4685,6 @@ impl PutObjectCommitBarrier {
             .await
             .expect("put object should wait for the namespace lock after leaving the commit barrier");
     }
-
-    pub fn namespace_acquired(&self) -> bool {
-        self.state.namespace_acquired.load(std::sync::atomic::Ordering::Acquire)
-    }
 }
 
 #[cfg(any(test, feature = "test-util"))]
@@ -4748,22 +4741,6 @@ fn notify_put_object_commit_namespace_pending(bucket: &str, object: &str) {
     }
 }
 
-#[cfg(any(test, feature = "test-util"))]
-fn notify_put_object_commit_namespace_acquired(bucket: &str, object: &str) {
-    let barrier = PUT_OBJECT_COMMIT_BARRIER
-        .get_or_init(|| std::sync::Mutex::new(Vec::new()))
-        .lock()
-        .expect("put object commit barrier mutex should not poison")
-        .iter()
-        .find(|barrier| {
-            barrier.bucket == bucket && barrier.object == object && barrier.pause == PutObjectCommitPause::BeforeNamespace
-        })
-        .cloned();
-    if let Some(barrier) = barrier {
-        barrier.namespace_acquired.store(true, std::sync::atomic::Ordering::Release);
-    }
-}
-
 #[cfg(test)]
 struct DeleteObjectCommitBarrierState {
     bucket: String,
@@ -4773,7 +4750,7 @@ struct DeleteObjectCommitBarrierState {
 }
 
 #[cfg(test)]
-pub(crate) struct DeleteObjectCommitBarrier {
+struct DeleteObjectCommitBarrier {
     state: Arc<DeleteObjectCommitBarrierState>,
 }
 
@@ -4783,7 +4760,7 @@ static DELETE_OBJECT_COMMIT_BARRIER: std::sync::OnceLock<std::sync::Mutex<Option
 
 #[cfg(test)]
 impl DeleteObjectCommitBarrier {
-    pub(crate) fn install(bucket: &str, object: &str) -> Self {
+    fn install(bucket: &str, object: &str) -> Self {
         let state = Arc::new(DeleteObjectCommitBarrierState {
             bucket: bucket.to_string(),
             object: object.to_string(),
@@ -4799,13 +4776,13 @@ impl DeleteObjectCommitBarrier {
         Self { state }
     }
 
-    pub(crate) async fn wait_until_paused(&self) {
+    async fn wait_until_paused(&self) {
         tokio::time::timeout(Duration::from_secs(30), self.state.arrived.notified())
             .await
             .expect("delete object should reach the deterministic commit barrier");
     }
 
-    pub(crate) fn release(&self) {
+    fn release(&self) {
         self.state.release.notify_one();
     }
 }
@@ -5900,7 +5877,6 @@ impl crate::storage_api_contracts::object::ObjectOperations for SetDisks {
             if dobj.version_id.is_none() && (version_suspended || versioned) {
                 vr.mod_time = Some(OffsetDateTime::now_utc());
                 vr.deleted = true;
-                vr.mark_deleted = true;
                 if versioned {
                     vr.version_id = Some(Uuid::new_v4());
                 }
@@ -11660,7 +11636,6 @@ mod transition_upload_integrity_tests {
                 crate::data_movement::SourceCleanupBucketFence {
                     expected_incarnation_id: None,
                     lifecycle_guard: Some(&bucket_guard),
-                    ..Default::default()
                 },
                 "test_data_movement",
             )

crates/ecstore/src/store/mod.rs

@@ -151,7 +151,7 @@ pub(crate) mod init_format;
 pub(crate) mod list_objects;
 mod multipart;
 mod object;
-pub(crate) use object::{ObjectLockDiagGuard, SourceCleanupMutationFence};
+pub(crate) use object::ObjectLockDiagGuard;
 pub use object::{
     PrepareSelectObjectSnapshotError, PreparedGetObjectReader, SelectObjectSnapshot, SelectObjectSnapshotReadError,
     SnapshotConsistencyError,

crates/ecstore/src/store/multipart.rs

@@ -400,7 +400,7 @@ impl ECStore {
         object: &str,
         opts: &ObjectOptions,
     ) -> Result<MultipartUploadResult> {
-        self.handle_new_multipart_upload_with_pool_idx(bucket, object, opts, None)
+        self.handle_new_multipart_upload_with_pool_idx(bucket, object, opts)
             .await
             .map(|(res, _, _)| res)
     }
@@ -410,22 +410,20 @@ impl ECStore {
         bucket: &str,
         object: &str,
         opts: &ObjectOptions,
-        mutation_fence: Option<&ObjectLockDiagGuard>,
     ) -> Result<(MultipartUploadResult, usize, Option<Uuid>)> {
         check_new_multipart_args(bucket, object)?;
-        let (mut opts, _bucket_lifecycle_guard) = self.guard_multipart_bucket_incarnation(bucket, opts).await?;
+        let (opts, _bucket_lifecycle_guard) = self.guard_multipart_bucket_incarnation(bucket, opts).await?;
+        let opts = &opts;
 
         if self.single_pool() {
-            self.apply_decommission_target_mutation_fence(0, object, &mut opts, mutation_fence)
-                .await;
             return self.pools[0]
-                .new_multipart_upload(bucket, object, &opts)
+                .new_multipart_upload(bucket, object, opts)
                 .await
                 .map(|res| (res, 0, opts.expected_bucket_incarnation_id));
         }
 
         if opts.data_movement && opts.version_id.is_some() {
-            let idx = self.select_data_movement_pool_idx(bucket, object, -1, &opts, false).await?;
+            let idx = self.select_data_movement_pool_idx(bucket, object, -1, opts, false).await?;
             if idx == opts.src_pool_idx {
                 return Err(StorageError::DataMovementOverwriteErr(
                     bucket.to_owned(),
@@ -433,9 +431,7 @@ impl ECStore {
                     opts.version_id.clone().unwrap_or_default(),
                 ));
             }
-            self.apply_decommission_target_mutation_fence(idx, object, &mut opts, mutation_fence)
-                .await;
-            let res = self.pools[idx].new_multipart_upload(bucket, object, &opts).await?;
+            let res = self.pools[idx].new_multipart_upload(bucket, object, opts).await?;
             return Ok((res, idx, opts.expected_bucket_incarnation_id));
         }
 
@@ -458,9 +454,7 @@ impl ECStore {
             .await?;
 
             if !res.uploads.is_empty() {
-                self.apply_decommission_target_mutation_fence(idx, object, &mut opts, mutation_fence)
-                    .await;
-                let res = self.pools[idx].new_multipart_upload(bucket, object, &opts).await?;
+                let res = self.pools[idx].new_multipart_upload(bucket, object, opts).await?;
                 return Ok((res, idx, opts.expected_bucket_incarnation_id));
             }
         }
@@ -473,9 +467,7 @@ impl ECStore {
             ));
         }
 
-        self.apply_decommission_target_mutation_fence(idx, object, &mut opts, mutation_fence)
-            .await;
-        let res = self.pools[idx].new_multipart_upload(bucket, object, &opts).await?;
+        let res = self.pools[idx].new_multipart_upload(bucket, object, opts).await?;
         Ok((res, idx, opts.expected_bucket_incarnation_id))
     }
 
@@ -712,14 +704,13 @@ impl ECStore {
 
     pub(crate) async fn complete_multipart_upload_for_data_movement(
         self: Arc<Self>,
-        target: (usize, Option<&ObjectLockDiagGuard>),
+        target_pool_idx: usize,
         bucket: &str,
         object: &str,
         upload_id: &str,
         uploaded_parts: Vec<CompletePart>,
         opts: &ObjectOptions,
     ) -> Result<ObjectInfo> {
-        let (target_pool_idx, mutation_fence) = target;
         check_complete_multipart_args(bucket, object, upload_id)?;
         if !opts.data_movement {
             return Err(Error::other("targeted multipart completion requires data_movement options"));
@@ -748,8 +739,6 @@ impl ECStore {
             snapshot.add_lock_fences(&mut opts);
             opts.object_lock_config_snapshot = Some(snapshot);
         }
-        self.apply_decommission_target_mutation_fence(target_pool_idx, object, &mut opts, mutation_fence)
-            .await;
         #[cfg(test)]
         pause_data_movement_multipart_before_selected_completion(bucket).await;
         let pool = self

crates/ecstore/src/store/object.rs

@@ -32,13 +32,12 @@ use crate::bucket::metadata_sys::{
 use crate::bucket::object_lock::objectlock_sys::{
     check_object_lock_for_deletion_with_state, ensure_recursive_force_delete_allowed_for_state,
 };
-use crate::bucket::replication::{DeleteReplicationConfigSnapshot, ReplicationObjectBridge};
-use crate::bucket::versioning::VersioningApi;
+use crate::bucket::replication::ReplicationObjectBridge;
 use crate::disk::OldCurrentSize;
 use crate::object_api::{NamespaceLockFence, ObjectLockConfigSnapshot};
 use crate::set_disk::{
-    SetDisks, get_lock_acquire_timeout, get_object_lock_diag_slow_acquire_threshold, get_object_lock_diag_slow_hold_threshold,
-    is_lock_optimization_enabled, is_object_lock_diag_enabled, same_distributed_lock_domain,
+    get_lock_acquire_timeout, get_object_lock_diag_slow_acquire_threshold, get_object_lock_diag_slow_hold_threshold,
+    is_lock_optimization_enabled, is_object_lock_diag_enabled,
 };
 use crate::storage_api_contracts::{
     namespace::NamespaceLocking as _,
@@ -353,8 +352,6 @@ impl fmt::Display for ObjectLockDiagMode {
 
 pub(crate) struct ObjectLockDiagGuard {
     guard: rustfs_lock::NamespaceLockGuard,
-    #[cfg(test)]
-    test_namespace_lock_fence: Option<NamespaceLockFence>,
     enabled: bool,
     op: &'static str,
     bucket: Option<String>,
@@ -376,8 +373,6 @@ impl ObjectLockDiagGuard {
     ) -> Self {
         Self {
             guard,
-            #[cfg(test)]
-            test_namespace_lock_fence: None,
             enabled,
             op,
             bucket,
@@ -398,115 +393,6 @@ impl ObjectLockDiagGuard {
     pub(crate) fn is_lock_lost(&self) -> bool {
         self.guard.is_lock_lost()
     }
-
-    pub(crate) fn add_namespace_lock_fence(&self, opts: &mut ObjectOptions) {
-        opts.ensure_namespace_lock_fence();
-        if let Some(signal) = self.lock_lost_signal() {
-            opts.add_namespace_lock_lost_signal(signal);
-        }
-        #[cfg(test)]
-        if let Some(fence) = self.test_namespace_lock_fence.as_ref() {
-            opts.add_namespace_lock_fence_for_test(fence);
-        }
-    }
-}
-
-#[cfg(test)]
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub(crate) enum DecommissionMutationFenceTestPhase {
-    Migration,
-    SourceCleanup,
-}
-
-#[cfg(test)]
-struct DecommissionMutationFenceLossState {
-    bucket: String,
-    object: String,
-    phase: DecommissionMutationFenceTestPhase,
-    fence: NamespaceLockFence,
-    loss_handle: Arc<std::sync::atomic::AtomicBool>,
-}
-
-#[cfg(test)]
-pub(crate) struct DecommissionMutationFenceLossHook {
-    state: Arc<DecommissionMutationFenceLossState>,
-}
-
-#[cfg(test)]
-static DECOMMISSION_MUTATION_FENCE_LOSS_HOOK: std::sync::OnceLock<
-    std::sync::Mutex<Option<Arc<DecommissionMutationFenceLossState>>>,
-> = std::sync::OnceLock::new();
-
-#[cfg(test)]
-impl DecommissionMutationFenceLossHook {
-    pub(crate) fn install(bucket: &str, object: &str, phase: DecommissionMutationFenceTestPhase) -> Self {
-        let (fence, loss_handle) = NamespaceLockFence::loss_handle_for_test();
-        let state = Arc::new(DecommissionMutationFenceLossState {
-            bucket: bucket.to_string(),
-            object: object.to_string(),
-            phase,
-            fence,
-            loss_handle,
-        });
-        let mut slot = DECOMMISSION_MUTATION_FENCE_LOSS_HOOK
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("decommission mutation fence loss hooks should not poison");
-        assert!(slot.is_none(), "decommission mutation fence loss hook must be unique");
-        *slot = Some(Arc::clone(&state));
-        Self { state }
-    }
-
-    pub(crate) fn mark_lost(&self) {
-        self.state.loss_handle.store(true, Ordering::Release);
-    }
-}
-
-#[cfg(test)]
-impl Drop for DecommissionMutationFenceLossHook {
-    fn drop(&mut self) {
-        let mut slot = DECOMMISSION_MUTATION_FENCE_LOSS_HOOK
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("decommission mutation fence loss hooks should not poison");
-        if slot.as_ref().is_some_and(|hook| Arc::ptr_eq(hook, &self.state)) {
-            *slot = None;
-        }
-    }
-}
-
-#[cfg(test)]
-fn decommission_mutation_fence_for_test(
-    bucket: &str,
-    object: &str,
-    phase: DecommissionMutationFenceTestPhase,
-) -> Option<NamespaceLockFence> {
-    DECOMMISSION_MUTATION_FENCE_LOSS_HOOK
-        .get_or_init(|| std::sync::Mutex::new(None))
-        .lock()
-        .expect("decommission mutation fence loss hooks should not poison")
-        .as_ref()
-        .filter(|hook| hook.bucket == bucket && hook.object == object && hook.phase == phase)
-        .map(|hook| hook.fence.clone())
-}
-
-pub(crate) struct SourceCleanupMutationFence {
-    guard: ObjectLockDiagGuard,
-    source_lock_covered: bool,
-}
-
-impl SourceCleanupMutationFence {
-    pub(crate) fn source_lock_covered(&self) -> bool {
-        self.source_lock_covered
-    }
-
-    pub(crate) fn is_lock_lost(&self) -> bool {
-        self.guard.is_lock_lost()
-    }
-
-    pub(crate) fn add_namespace_lock_fence(&self, opts: &mut ObjectOptions) {
-        self.guard.add_namespace_lock_fence(opts);
-    }
 }
 
 /// Opaque write-lock guard for the RestoreObject accept path; see
@@ -524,7 +410,10 @@ impl RestoreAcceptGuard {
     }
 
     pub fn add_namespace_lock_fence(&self, opts: &mut ObjectOptions) {
-        self.0.add_namespace_lock_fence(opts);
+        opts.ensure_namespace_lock_fence();
+        if let Some(signal) = self.0.lock_lost_signal() {
+            opts.add_namespace_lock_lost_signal(signal);
+        }
     }
 }
 
@@ -801,6 +690,16 @@ impl SelectObjectSnapshotLockLossWake {
     }
 }
 
+// LockRegistry clones its canonical client Arc for each endpoint host, so an
+// exact Arc set identifies one distributed namespace-lock quorum domain.
+fn same_distributed_lock_domain(left: &[Arc<dyn rustfs_lock::LockClient>], right: &[Arc<dyn rustfs_lock::LockClient>]) -> bool {
+    left.iter()
+        .all(|left_client| right.iter().any(|right_client| Arc::ptr_eq(left_client, right_client)))
+        && right
+            .iter()
+            .all(|right_client| left.iter().any(|left_client| Arc::ptr_eq(left_client, right_client)))
+}
+
 impl AsyncRead for SelectObjectSnapshotReader {
     fn poll_read(mut self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &mut ReadBuf<'_>) -> Poll<std::io::Result<()>> {
         if self.lock_loss_wake.poll_lost(cx) || self.lease.is_lost() {
@@ -906,7 +805,7 @@ fn resolve_latest_object_access(
 }
 
 fn should_create_delete_marker_for_missing_object(opts: &ObjectOptions) -> bool {
-    (opts.versioned || opts.version_suspended) && opts.version_id.is_none() && !opts.delete_marker && !opts.data_movement
+    opts.versioned && opts.version_id.is_none() && !opts.delete_marker && !opts.data_movement
 }
 
 #[cfg(test)]
@@ -914,8 +813,6 @@ struct DeleteAfterObjectLockSnapshotBarrierState {
     bucket: String,
     arrived: tokio::sync::Notify,
     release: tokio::sync::Notify,
-    namespace_pending: tokio::sync::Notify,
-    namespace_acquired: AtomicBool,
 }
 
 #[cfg(test)]
@@ -935,8 +832,6 @@ impl DeleteAfterObjectLockSnapshotBarrier {
             bucket: bucket.to_string(),
             arrived: tokio::sync::Notify::new(),
             release: tokio::sync::Notify::new(),
-            namespace_pending: tokio::sync::Notify::new(),
-            namespace_acquired: AtomicBool::new(false),
         });
         let mut slot = DELETE_AFTER_OBJECT_LOCK_SNAPSHOT_BARRIER
             .get_or_init(|| std::sync::Mutex::new(None))
@@ -954,18 +849,6 @@ impl DeleteAfterObjectLockSnapshotBarrier {
     pub(crate) fn release(&self) {
         self.state.release.notify_one();
     }
-
-    pub(crate) async fn release_and_wait_until_namespace_pending(&self) {
-        let namespace_pending = self.state.namespace_pending.notified();
-        self.release();
-        tokio::time::timeout(Duration::from_secs(5), namespace_pending)
-            .await
-            .expect("delete should proceed to its namespace lock after leaving the snapshot barrier");
-    }
-
-    pub(crate) fn namespace_acquired(&self) -> bool {
-        self.state.namespace_acquired.load(Ordering::Acquire)
-    }
 }
 
 #[cfg(test)]
@@ -990,97 +873,6 @@ async fn pause_delete_after_object_lock_snapshot(bucket: &str) {
         .as_ref()
         .filter(|state| state.bucket == bucket)
         .cloned();
-    if let Some(state) = state {
-        state.arrived.notify_one();
-        state.release.notified().await;
-        state.namespace_pending.notify_one();
-    }
-}
-
-#[cfg(test)]
-fn notify_delete_namespace_acquired(bucket: &str) {
-    let state = DELETE_AFTER_OBJECT_LOCK_SNAPSHOT_BARRIER
-        .get_or_init(|| std::sync::Mutex::new(None))
-        .lock()
-        .expect("delete snapshot barrier mutex should not poison")
-        .as_ref()
-        .filter(|state| state.bucket == bucket)
-        .cloned();
-    if let Some(state) = state {
-        state.namespace_acquired.store(true, Ordering::Release);
-    }
-}
-
-#[cfg(test)]
-struct VersionedDeleteMarkerCommitBarrierState {
-    bucket: String,
-    object: String,
-    arrived: tokio::sync::Notify,
-    release: tokio::sync::Notify,
-}
-
-#[cfg(test)]
-pub(crate) struct VersionedDeleteMarkerCommitBarrier {
-    state: Arc<VersionedDeleteMarkerCommitBarrierState>,
-}
-
-#[cfg(test)]
-static VERSIONED_DELETE_MARKER_COMMIT_BARRIER: std::sync::OnceLock<
-    std::sync::Mutex<Option<Arc<VersionedDeleteMarkerCommitBarrierState>>>,
-> = std::sync::OnceLock::new();
-
-#[cfg(test)]
-impl VersionedDeleteMarkerCommitBarrier {
-    pub(crate) fn install(bucket: &str, object: &str) -> Self {
-        let state = Arc::new(VersionedDeleteMarkerCommitBarrierState {
-            bucket: bucket.to_string(),
-            object: object.to_string(),
-            arrived: tokio::sync::Notify::new(),
-            release: tokio::sync::Notify::new(),
-        });
-        let mut slot = VERSIONED_DELETE_MARKER_COMMIT_BARRIER
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("versioned delete-marker commit barrier mutex should not poison");
-        assert!(slot.is_none(), "versioned delete-marker commit barrier must be unique");
-        *slot = Some(Arc::clone(&state));
-        Self { state }
-    }
-
-    pub(crate) async fn wait_until_paused(&self) {
-        tokio::time::timeout(Duration::from_secs(30), self.state.arrived.notified())
-            .await
-            .expect("versioned DELETE should reach the post-marker-commit barrier");
-    }
-
-    pub(crate) fn release(&self) {
-        self.state.release.notify_one();
-    }
-}
-
-#[cfg(test)]
-impl Drop for VersionedDeleteMarkerCommitBarrier {
-    fn drop(&mut self) {
-        self.state.release.notify_one();
-        let mut slot = VERSIONED_DELETE_MARKER_COMMIT_BARRIER
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("versioned delete-marker commit barrier mutex should not poison");
-        if slot.as_ref().is_some_and(|state| Arc::ptr_eq(state, &self.state)) {
-            *slot = None;
-        }
-    }
-}
-
-#[cfg(test)]
-async fn pause_versioned_delete_marker_after_commit(bucket: &str, object: &str) {
-    let state = VERSIONED_DELETE_MARKER_COMMIT_BARRIER
-        .get_or_init(|| std::sync::Mutex::new(None))
-        .lock()
-        .expect("versioned delete-marker commit barrier mutex should not poison")
-        .as_ref()
-        .filter(|state| state.bucket == bucket && state.object == object)
-        .cloned();
     if let Some(state) = state {
         state.arrived.notify_one();
         state.release.notified().await;
@@ -1121,160 +913,6 @@ fn writer_pool_lookup_opts(opts: &ObjectOptions, no_lock: bool) -> ObjectOptions
     lookup_opts
 }
 
-fn delete_pool_lookup_opts(opts: &ObjectOptions, no_lock: bool) -> ObjectOptions {
-    let mut lookup_opts = writer_pool_lookup_opts(opts, no_lock);
-    lookup_opts.skip_decommissioned = opts.data_movement;
-    lookup_opts
-}
-
-fn should_delete_from_all_pools(opts: &ObjectOptions, pool_count: usize) -> bool {
-    pool_count > 0 && (!opts.versioned && !opts.version_suspended || opts.version_id.is_some())
-}
-
-fn batch_delete_creates_latest_marker(object: &ObjectToDelete, delete_config_snapshot: &DeleteReplicationConfigSnapshot) -> bool {
-    if object.version_id.is_some() {
-        return false;
-    }
-
-    let object_name = decode_dir_object(&object.object_name);
-    let (versioned, version_suspended) = delete_config_snapshot.versioning_config().delete_state(&object_name);
-    versioned || version_suspended
-}
-
-fn batch_delete_targets_pool(creates_latest_marker: bool, marker_target_pool_idx: Option<usize>, pool_idx: usize) -> bool {
-    !creates_latest_marker || marker_target_pool_idx == Some(pool_idx)
-}
-
-#[cfg(test)]
-struct BatchDeletePoolErrorInjectionState {
-    bucket: String,
-    pool_idx: usize,
-    errors: std::collections::HashMap<String, Error>,
-    observed: std::sync::atomic::AtomicUsize,
-}
-
-#[cfg(test)]
-pub(crate) struct BatchDeletePoolErrorInjection {
-    state: Arc<BatchDeletePoolErrorInjectionState>,
-}
-
-#[cfg(test)]
-static BATCH_DELETE_POOL_ERROR_INJECTION: std::sync::OnceLock<std::sync::Mutex<Option<Arc<BatchDeletePoolErrorInjectionState>>>> =
-    std::sync::OnceLock::new();
-
-#[cfg(test)]
-impl BatchDeletePoolErrorInjection {
-    pub(crate) fn install(bucket: &str, pool_idx: usize, errors: Vec<(String, Error)>) -> Self {
-        let state = Arc::new(BatchDeletePoolErrorInjectionState {
-            bucket: bucket.to_string(),
-            pool_idx,
-            errors: errors.into_iter().collect(),
-            observed: std::sync::atomic::AtomicUsize::new(0),
-        });
-        let mut slot = BATCH_DELETE_POOL_ERROR_INJECTION
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("batch delete pool error injection mutex should not poison");
-        assert!(slot.is_none(), "batch delete pool error injection must be unique");
-        *slot = Some(Arc::clone(&state));
-        Self { state }
-    }
-
-    pub(crate) fn observed(&self) -> usize {
-        self.state.observed.load(Ordering::Acquire)
-    }
-}
-
-#[cfg(test)]
-impl Drop for BatchDeletePoolErrorInjection {
-    fn drop(&mut self) {
-        let mut slot = BATCH_DELETE_POOL_ERROR_INJECTION
-            .get_or_init(|| std::sync::Mutex::new(None))
-            .lock()
-            .expect("batch delete pool error injection mutex should not poison");
-        if slot.as_ref().is_some_and(|state| Arc::ptr_eq(state, &self.state)) {
-            *slot = None;
-        }
-    }
-}
-
-#[cfg(test)]
-fn inject_batch_delete_pool_errors(
-    bucket: &str,
-    pool_idx: usize,
-    object_names: &[String],
-    result: &mut (Vec<DeletedObject>, Vec<Option<Error>>),
-) {
-    let state = BATCH_DELETE_POOL_ERROR_INJECTION
-        .get_or_init(|| std::sync::Mutex::new(None))
-        .lock()
-        .expect("batch delete pool error injection mutex should not poison")
-        .as_ref()
-        .filter(|state| state.bucket == bucket && state.pool_idx == pool_idx)
-        .cloned();
-    let Some(state) = state else {
-        return;
-    };
-
-    for (idx, object_name) in object_names.iter().enumerate() {
-        let Some(error) = state.errors.get(object_name) else {
-            continue;
-        };
-        if result.1[idx].is_none() && result.0[idx].found {
-            result.1[idx] = Some(error.clone());
-            state.observed.fetch_add(1, Ordering::AcqRel);
-        }
-    }
-}
-
-fn resolve_batch_delete_pool_results<'a>(
-    initial_error: Option<Error>,
-    pool_results: impl IntoIterator<Item = (&'a DeletedObject, &'a Option<Error>)>,
-) -> (Option<DeletedObject>, Option<Error>, bool) {
-    let mut failure = initial_error.map(|err| (None, err));
-    let mut deleted = None;
-    let mut fallback: Option<(DeletedObject, Option<Error>)> = None;
-    let mut attempted = false;
-
-    for (pool_delete, pool_error) in pool_results {
-        attempted = true;
-        match pool_error {
-            Some(err) if is_err_object_not_found(err) || is_err_version_not_found(err) => {
-                if fallback.as_ref().is_none_or(|(_, error)| error.is_none()) {
-                    fallback = Some(((*pool_delete).clone(), Some(err.clone())));
-                }
-            }
-            Some(err) => {
-                if failure.is_none() {
-                    failure = Some((Some((*pool_delete).clone()), err.clone()));
-                }
-            }
-            None if pool_delete.found => {
-                if deleted.is_none() {
-                    deleted = Some((*pool_delete).clone());
-                }
-            }
-            None => {
-                if fallback.is_none() {
-                    fallback = Some(((*pool_delete).clone(), None));
-                }
-            }
-        }
-    }
-
-    if let Some((failed_delete, err)) = failure {
-        return (failed_delete, Some(err), attempted);
-    }
-    if let Some(deleted) = deleted {
-        return (Some(deleted), None, attempted);
-    }
-    if let Some((deleted, err)) = fallback {
-        return (Some(deleted), err, attempted);
-    }
-
-    (None, None, attempted)
-}
-
 fn transition_restore_pool_opts(opts: &ObjectOptions) -> ObjectOptions {
     let mut lookup_opts = opts.clone();
     lookup_opts.skip_decommissioned = true;
@@ -1895,89 +1533,6 @@ impl ECStore {
         )))
     }
 
-    pub(crate) async fn acquire_decommission_object_mutation_fence(
-        &self,
-        bucket: &str,
-        object: &str,
-    ) -> Result<ObjectLockDiagGuard> {
-        if self.ctx.lock_manager().is_disabled() {
-            return Err(Error::other("decommission object migration requires namespace locking"));
-        }
-
-        #[cfg(test)]
-        let test_namespace_lock_fence =
-            decommission_mutation_fence_for_test(bucket, object, DecommissionMutationFenceTestPhase::Migration);
-        let object = encode_dir_object(object);
-        let mut opts = ObjectOptions::default();
-        let guard = self
-            .acquire_object_read_lock_if_needed("decommission_object", bucket, &object, &mut opts)
-            .await?
-            .ok_or_else(|| Error::other("decommission object migration failed to acquire its namespace fence"))?;
-        #[cfg(test)]
-        let guard = {
-            let mut guard = guard;
-            guard.test_namespace_lock_fence = test_namespace_lock_fence;
-            guard
-        };
-        Ok(guard)
-    }
-
-    pub(super) async fn apply_decommission_target_mutation_fence(
-        &self,
-        target_pool_idx: usize,
-        object: &str,
-        opts: &mut ObjectOptions,
-        mutation_fence: Option<&ObjectLockDiagGuard>,
-    ) {
-        let Some(mutation_fence) = mutation_fence else {
-            return;
-        };
-
-        mutation_fence.add_namespace_lock_fence(opts);
-        let fixed_set = self.pools.first().and_then(|pool| pool.disk_set.first());
-        let target_set = self.pools.get(target_pool_idx).map(|pool| pool.get_disks_by_key(object));
-        opts.no_lock = match (fixed_set, target_set) {
-            (Some(fixed), Some(target)) => fixed.shares_namespace_lock_domain(&target).await,
-            _ => false,
-        };
-    }
-
-    pub(crate) async fn acquire_decommission_source_cleanup_fence(
-        &self,
-        bucket: &str,
-        object: &str,
-        source_set: &SetDisks,
-    ) -> Result<SourceCleanupMutationFence> {
-        if self.ctx.lock_manager().is_disabled() {
-            return Err(Error::other("decommission source cleanup requires namespace locking"));
-        }
-
-        #[cfg(test)]
-        crate::data_movement::notify_source_cleanup_mutation_fence_pending(bucket, object);
-        #[cfg(test)]
-        let test_namespace_lock_fence =
-            decommission_mutation_fence_for_test(bucket, object, DecommissionMutationFenceTestPhase::SourceCleanup);
-        let object = encode_dir_object(object);
-        let fixed_set = Arc::clone(&self.pools[0].disk_set[0]);
-        let source_lock_covered = fixed_set.shares_namespace_lock_domain(source_set).await;
-        // Lock order: fixed store mutation domain first; source cleanup takes its
-        // hashed source-domain lock second only when this guard does not cover it.
-        let guard = self
-            .acquire_object_write_lock("decommission_source_cleanup", bucket, &object)
-            .await?;
-        #[cfg(test)]
-        let guard = {
-            let mut guard = guard;
-            guard.test_namespace_lock_fence = test_namespace_lock_fence;
-            guard
-        };
-
-        Ok(SourceCleanupMutationFence {
-            guard,
-            source_lock_covered,
-        })
-    }
-
     pub(crate) async fn acquire_all_object_read_locks(
         &self,
         op: &'static str,
@@ -2431,17 +1986,14 @@ impl ECStore {
         object: &str,
         data: &mut PutObjReader,
         opts: &ObjectOptions,
-        mutation_fence: Option<&ObjectLockDiagGuard>,
     ) -> Result<(usize, Result<ObjectInfo>)> {
         if !opts.data_movement {
             return Err(Error::other("data movement PUT requires data_movement options"));
         }
-        let (object, mut opts) = self.prepare_put_object(bucket, object, opts).await?;
+        let (object, opts) = self.prepare_put_object(bucket, object, opts).await?;
         let idx = self
             .select_put_object_pool_idx(bucket, object.as_str(), data.size(), &opts)
             .await?;
-        self.apply_decommission_target_mutation_fence(idx, object.as_str(), &mut opts, mutation_fence)
-            .await;
         let result = self.pools[idx]
             .put_object_with_old_current_size(bucket, &object, data, &opts)
             .await
@@ -2894,10 +2446,6 @@ impl ECStore {
         } else {
             None
         };
-        #[cfg(test)]
-        if _object_lock_guard.is_some() {
-            notify_delete_namespace_acquired(bucket);
-        }
         if let Some(trigger) = opts.lifecycle_delete_all.as_ref() {
             let configs = delete_all_configs.as_ref().ok_or(StorageError::PreconditionFailed)?;
             let expected_bucket_incarnation_id = opts.expected_bucket_incarnation_id.ok_or(StorageError::PreconditionFailed)?;
@@ -2931,7 +2479,7 @@ impl ECStore {
             return Ok(ObjectInfo::default());
         }
 
-        let gopts = delete_pool_lookup_opts(&opts, true);
+        let gopts = writer_pool_lookup_opts(&opts, true);
 
         if opts.data_movement {
             let existing_pool_info = self.get_pool_info_existing_with_opts(bucket, object, &gopts).await;
@@ -3036,8 +2584,6 @@ impl ECStore {
             Err(err) if is_err_object_not_found(&err) && should_create_delete_marker_for_missing_object(&opts) => {
                 let target_pool_idx = self.get_pool_idx_no_lock(bucket, object, 0).await?;
                 let mut obj = self.pools[target_pool_idx].delete_object(bucket, object, opts).await?;
-                #[cfg(test)]
-                pause_versioned_delete_marker_after_commit(bucket, object).await;
                 obj.name = decode_dir_object(object);
                 return Ok(obj);
             }
@@ -3076,7 +2622,7 @@ impl ECStore {
             None
         };
 
-        if should_delete_from_all_pools(&opts, errs.len()) {
+        if !errs.is_empty() && !opts.versioned && !opts.version_suspended {
             let mut obj = match self.delete_object_from_all_pools(bucket, object, &opts, errs).await {
                 Ok(obj) => obj,
                 Err(err) => {
@@ -3100,8 +2646,6 @@ impl ECStore {
 
             match pool.delete_object(bucket, object, opts.clone()).await {
                 Ok(res) => {
-                    #[cfg(test)]
-                    pause_versioned_delete_marker_after_commit(bucket, object).await;
                     if let (Some(api), Some(je)) = (tier_journal_api.as_ref(), journal_entry.as_ref()) {
                         commit_prepared_tier_delete_journal_entry(api, je).await;
                     }
@@ -3232,104 +2776,30 @@ impl ECStore {
             Ok(guards) => guards,
             Err(err) => return return_batch_delete_lock_error(objects.as_slice(), err),
         };
-        #[cfg(test)]
-        if !_object_lock_guards.is_empty() {
-            notify_delete_namespace_acquired(bucket);
-        }
-
-        let delete_config_snapshot = opts
-            .delete_replication_config_snapshot
-            .as_deref()
-            .expect("batch delete replication config snapshot should be loaded");
-        let latest_marker_objects = objects
-            .iter()
-            .map(|object| batch_delete_creates_latest_marker(object, delete_config_snapshot))
-            .collect::<Vec<_>>();
-        let marker_target_results = join_all(objects.iter().zip(&latest_marker_objects).map(
-            |(object, creates_marker)| async move {
-                if *creates_marker {
-                    Some(self.get_pool_idx_no_lock(bucket, &object.object_name, 0).await)
-                } else {
-                    None
-                }
-            },
-        ))
-        .await;
-        let mut marker_target_pool_indices = Vec::with_capacity(objects.len());
-        for (idx, target_result) in marker_target_results.into_iter().enumerate() {
-            match target_result {
-                Some(Ok(pool_idx)) => marker_target_pool_indices.push(Some(pool_idx)),
-                Some(Err(err)) => {
-                    del_errs[idx] = Some(err);
-                    marker_target_pool_indices.push(None);
-                }
-                None => marker_target_pool_indices.push(None),
-            }
-        }
 
         let mut futures = Vec::with_capacity(self.pools.len());
+
         for pool in self.pools.iter() {
             if self.is_pool_rebalancing(pool.pool_idx).await {
                 continue;
             }
-
-            let (object_indices, pool_objects): (Vec<_>, Vec<_>) = objects
-                .iter()
-                .enumerate()
-                .filter(|(idx, _)| {
-                    batch_delete_targets_pool(latest_marker_objects[*idx], marker_target_pool_indices[*idx], pool.pool_idx)
-                })
-                .map(|(idx, object)| (idx, object.clone()))
-                .unzip();
-            if pool_objects.is_empty() {
-                continue;
-            }
-
-            let pool_opts = opts.clone();
-            futures.push(async move {
-                #[cfg(test)]
-                let pool_object_names = pool_objects
-                    .iter()
-                    .map(|object| object.object_name.clone())
-                    .collect::<Vec<_>>();
-                let result = pool.delete_objects(bucket, pool_objects, pool_opts).await;
-                #[cfg(test)]
-                let result = {
-                    let mut result = result;
-                    inject_batch_delete_pool_errors(bucket, pool.pool_idx, &pool_object_names, &mut result);
-                    result
-                };
-                (object_indices, result)
-            });
+            futures.push(pool.delete_objects(bucket, objects.clone(), opts.clone()));
         }
 
         let results = join_all(futures).await;
 
         for idx in 0..del_objects.len() {
-            let pool_results = results.iter().filter_map(|(object_indices, (dels, errs))| {
-                let pool_object_idx = object_indices.binary_search(&idx).ok()?;
-                Some((&dels[pool_object_idx], &errs[pool_object_idx]))
-            });
-            let (deleted, error, attempted) = resolve_batch_delete_pool_results(del_errs[idx].take(), pool_results);
-            if let Some(deleted) = deleted {
-                del_objects[idx] = deleted;
-            }
-            del_errs[idx] = error;
+            for (dels, errs) in results.iter() {
+                if errs[idx].is_none() && dels[idx].found {
+                    del_errs[idx] = None;
+                    del_objects[idx] = dels[idx].clone();
+                    break;
+                }
 
-            if !attempted && del_errs[idx].is_none() && latest_marker_objects[idx] {
-                del_objects[idx] = DeletedObject {
-                    object_name: objects[idx].object_name.clone(),
-                    version_id: objects[idx].version_id,
-                    ..Default::default()
-                };
-                del_errs[idx] = Some(StorageError::ObjectNotFound(bucket.to_owned(), objects[idx].object_name.clone()));
-            }
-        }
-
-        #[cfg(test)]
-        for (idx, object) in objects.iter().enumerate() {
-            if del_errs[idx].is_none() && del_objects[idx].delete_marker {
-                pause_versioned_delete_marker_after_commit(bucket, &object.object_name).await;
+                if del_errs[idx].is_none() {
+                    del_errs[idx] = errs[idx].clone();
+                    del_objects[idx] = dels[idx].clone();
+                }
             }
         }
 
@@ -3904,80 +3374,6 @@ mod tests {
         assert!(!same_distributed_lock_domain(&[first, second], &[other]));
     }
 
-    #[tokio::test]
-    async fn decommission_fence_covers_dist_sets_with_same_clients_despite_different_namespaces() {
-        let ctx = Arc::new(crate::runtime::instance::InstanceContext::new());
-        let (_dirs, original_sets) = make_local_two_set_sets_with_ctx(Arc::clone(&ctx)).await;
-        let mut second_set = (*original_sets.disk_set[1]).clone();
-        second_set.lockers = original_sets.disk_set[0].lockers.clone();
-        let mut sets = (*original_sets).clone();
-        sets.disk_set[1] = Arc::new(second_set);
-        let sets = Arc::new(sets);
-        ctx.update_erasure_type(SetupType::DistErasure).await;
-
-        assert!(
-            sets.disk_set[0]
-                .lockers
-                .iter()
-                .zip(&sets.disk_set[1].lockers)
-                .all(|(fixed, hashed)| Arc::ptr_eq(fixed, hashed)),
-            "the regression requires identical distributed lock clients"
-        );
-        assert_ne!(sets.disk_set[0].set_index, sets.disk_set[1].set_index);
-
-        let pool_config = sets.endpoints.clone();
-        let store = new_prepared_reader_test_store_from_pools(vec![Arc::clone(&sets)], vec![pool_config], ctx);
-        let object = (0..1_000)
-            .map(|index| format!("decommission-dist-domain-{index}.bin"))
-            .find(|candidate| Arc::ptr_eq(&sets.get_disks_by_key(candidate), &sets.disk_set[1]))
-            .expect("a key should hash to the second set namespace");
-        let mutation_fence = store
-            .acquire_decommission_object_mutation_fence("bucket", &object)
-            .await
-            .expect("the fixed distributed mutation fence should be acquired");
-        let target_lock = sets.disk_set[1]
-            .new_ns_lock("bucket", &object)
-            .await
-            .expect("the hashed-set namespace lock should be created");
-        let target_err = target_lock
-            .get_write_lock(Duration::from_millis(50))
-            .await
-            .expect_err("the fixed read fence must conflict through the shared clients");
-        assert!(matches!(target_err, rustfs_lock::LockError::Timeout { .. }));
-
-        let mut put_opts = ObjectOptions::default();
-        store
-            .apply_decommission_target_mutation_fence(0, &object, &mut put_opts, Some(&mutation_fence))
-            .await;
-        assert!(put_opts.no_lock, "migration target PUT must reuse the covering fixed fence");
-
-        let mut multipart_opts = ObjectOptions::default();
-        store
-            .apply_decommission_target_mutation_fence(0, &object, &mut multipart_opts, Some(&mutation_fence))
-            .await;
-        assert!(multipart_opts.no_lock, "migration target multipart must reuse the covering fixed fence");
-        drop(mutation_fence);
-
-        let cleanup_object = (0..1_000)
-            .map(|index| format!("decommission-dist-cleanup-{index}.bin"))
-            .find(|candidate| Arc::ptr_eq(&sets.get_disks_by_key(candidate), &sets.disk_set[1]))
-            .expect("a cleanup key should hash to the second set namespace");
-        let source_fence = store
-            .acquire_decommission_source_cleanup_fence("bucket", &cleanup_object, sets.disk_set[1].as_ref())
-            .await
-            .expect("the fixed distributed cleanup fence should be acquired");
-        assert!(source_fence.source_lock_covered(), "source cleanup must reuse the covering fixed fence");
-        let source_lock = sets.disk_set[1]
-            .new_ns_lock("bucket", &cleanup_object)
-            .await
-            .expect("the source-set namespace lock should be created");
-        let source_err = source_lock
-            .get_read_lock(Duration::from_millis(50))
-            .await
-            .expect_err("the fixed write fence must conflict through the shared clients");
-        assert!(matches!(source_err, rustfs_lock::LockError::Timeout { .. }));
-    }
-
     #[test]
     fn select_snapshot_version_matching_normalizes_null_and_uuid_forms() {
         let nil = Uuid::nil();
@@ -5037,159 +4433,6 @@ mod tests {
         assert_eq!(lookup_opts.version_id.as_deref(), Some("vid-1"));
     }
 
-    #[test]
-    fn ordinary_delete_lookup_includes_decommission_source_and_skips_rebalance_source() {
-        let lookup_opts = delete_pool_lookup_opts(&ObjectOptions::default(), true);
-
-        assert!(lookup_opts.no_lock);
-        assert!(!lookup_opts.skip_decommissioned);
-        assert!(lookup_opts.skip_rebalancing);
-
-        let explicit_version = delete_pool_lookup_opts(
-            &ObjectOptions {
-                versioned: true,
-                version_id: Some(uuid::Uuid::new_v4().to_string()),
-                ..Default::default()
-            },
-            true,
-        );
-        assert!(!explicit_version.skip_decommissioned);
-    }
-
-    #[test]
-    fn delete_fans_out_for_unversioned_and_explicit_version_mutations() {
-        assert!(should_delete_from_all_pools(&ObjectOptions::default(), 1));
-        assert!(should_delete_from_all_pools(
-            &ObjectOptions {
-                versioned: true,
-                version_id: Some(uuid::Uuid::new_v4().to_string()),
-                ..Default::default()
-            },
-            2,
-        ));
-        assert!(!should_delete_from_all_pools(
-            &ObjectOptions {
-                versioned: true,
-                ..Default::default()
-            },
-            1,
-        ));
-        assert!(!should_delete_from_all_pools(&ObjectOptions::default(), 0));
-    }
-
-    #[test]
-    fn batch_delete_identifies_only_latest_versioned_markers() {
-        let versioned = DeleteReplicationConfigSnapshot::from_configs_for_test(
-            s3s::dto::VersioningConfiguration {
-                status: Some(s3s::dto::BucketVersioningStatus::from_static(s3s::dto::BucketVersioningStatus::ENABLED)),
-                ..Default::default()
-            },
-            None,
-        );
-        let latest = ObjectToDelete {
-            object_name: "latest".to_string(),
-            ..Default::default()
-        };
-        assert!(batch_delete_creates_latest_marker(&latest, &versioned));
-        assert!(!batch_delete_targets_pool(true, Some(1), 0));
-        assert!(batch_delete_targets_pool(true, Some(1), 1));
-        assert!(!batch_delete_targets_pool(true, Some(1), 2));
-
-        let explicit = ObjectToDelete {
-            object_name: "explicit".to_string(),
-            version_id: Some(uuid::Uuid::new_v4()),
-            ..Default::default()
-        };
-        assert!(!batch_delete_creates_latest_marker(&explicit, &versioned));
-        assert!(batch_delete_targets_pool(false, Some(1), 0));
-
-        let unversioned = DeleteReplicationConfigSnapshot::default();
-        assert!(!batch_delete_creates_latest_marker(&latest, &unversioned));
-        assert!(batch_delete_targets_pool(false, None, 0));
-    }
-
-    #[test]
-    fn batch_delete_pool_failures_override_success_in_any_pool_order() {
-        let success = DeletedObject {
-            object_name: "object".to_string(),
-            found: true,
-            ..Default::default()
-        };
-        let source_errors = [
-            StorageError::ErasureWriteQuorum,
-            StorageError::NamespaceLockQuorumUnavailable {
-                mode: "delete_objects_commit",
-                bucket: "bucket".to_string(),
-                object: "object".to_string(),
-                required: 1,
-                achieved: 0,
-            },
-        ];
-
-        for source_error in source_errors {
-            for source_first in [true, false] {
-                let failed = (DeletedObject::default(), Some(source_error.clone()));
-                let succeeded = (success.clone(), None);
-                let pool_results = if source_first {
-                    vec![failed, succeeded]
-                } else {
-                    vec![succeeded, failed]
-                };
-
-                let (_, error, attempted) =
-                    resolve_batch_delete_pool_results(None, pool_results.iter().map(|(deleted, error)| (deleted, error)));
-
-                assert!(attempted);
-                assert_eq!(error, Some(source_error.clone()));
-            }
-        }
-    }
-
-    #[test]
-    fn batch_delete_ignores_missing_pool_only_after_another_pool_succeeds() {
-        let success = DeletedObject {
-            object_name: "object".to_string(),
-            found: true,
-            ..Default::default()
-        };
-        let missing_errors = [
-            StorageError::ObjectNotFound("bucket".to_string(), "object".to_string()),
-            StorageError::VersionNotFound("bucket".to_string(), "object".to_string(), "version".to_string()),
-        ];
-
-        for missing_error in missing_errors {
-            let missing = (DeletedObject::default(), Some(missing_error.clone()));
-            for missing_first in [true, false] {
-                let succeeded = (success.clone(), None);
-                let pool_results = if missing_first {
-                    vec![missing.clone(), succeeded]
-                } else {
-                    vec![succeeded, missing.clone()]
-                };
-                let (deleted, error, attempted) =
-                    resolve_batch_delete_pool_results(None, pool_results.iter().map(|(deleted, error)| (deleted, error)));
-
-                assert!(attempted);
-                let deleted = deleted.expect("successful pool result should be retained");
-                assert!(deleted.found);
-                assert_eq!(deleted.object_name, success.object_name.as_str());
-                assert!(error.is_none());
-            }
-
-            let missing_only = [missing];
-            let (_, error, attempted) =
-                resolve_batch_delete_pool_results(None, missing_only.iter().map(|(deleted, error)| (deleted, error)));
-            assert!(attempted);
-            assert_eq!(error, Some(missing_error));
-        }
-
-        let silent_missing = [(DeletedObject::default(), None)];
-        let (_, error, attempted) =
-            resolve_batch_delete_pool_results(None, silent_missing.iter().map(|(deleted, error)| (deleted, error)));
-        assert!(attempted);
-        assert!(error.is_none());
-    }
-
     #[test]
     fn data_movement_pool_lookup_opts_keeps_no_lock_for_tiered_moves() {
         let lookup_opts = data_movement_pool_lookup_opts(