style: restore rebalance formatting

Signed-off-by: houseme <housemecn@gmail.com>

crates/ecstore/src/cluster/rpc/peer_rest_client.rs

@@ -1089,7 +1089,9 @@ impl PeerRestClient {
                     .await?
                     .max_decoding_message_size(BACKGROUND_HEAL_STATUS_MAX_MESSAGE_SIZE);
                 let response = match client
-                    .background_heal_status(Request::new(BackgroundHealStatusRequest::default()))
+                    .background_heal_status(Request::new(BackgroundHealStatusRequest {
+                        protocol_version: rustfs_protos::BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION,
+                    }))
                     .await
                 {
                     Ok(response) => response.into_inner(),

crates/heal/src/heal/erasure_healer.rs

@@ -13,10 +13,10 @@
 // limitations under the License.
 
 use crate::heal::{
-    progress::HealProgress,
+    progress::{HealProgress, add_bytes, increment_counter},
     resume::{
-        CheckpointManager, ReplacementTargetIdentity, ResumeManager, ResumeUtils, compose_key,
-        replacement_target_identities_match,
+        CheckpointManager, CheckpointObjectOutcome, CheckpointObjectOutcomeRecord, ReplacementTargetIdentity, ResumeManager,
+        ResumeUtils, compose_key, replacement_target_identities_match,
     },
     storage::{HealStorageAPI, next_heal_listing_token},
     task::{demote_to_debug_when, is_missing_object_dir_heal_result, take_failure_log_sample},
@@ -410,6 +410,9 @@ impl ErasureSetHealer {
                 && state.successful_objects == 0
                 && state.failed_objects == 0
                 && state.skipped_objects == 0
+                && state.skipped_new_versions == 0
+                && state.skipped_ilm_expired == 0
+                && state.processed_bytes == 0
             {
                 // schedule_retry persists the authoritative resume reset before
                 // resetting the checkpoint. Reapply the checkpoint reset after
@@ -474,6 +477,23 @@ impl ErasureSetHealer {
 
         // 2. initialize progress
         self.initialize_progress(buckets, &state).await;
+        let (baseline_known, baseline_count, baseline_size, baseline_generation) = {
+            let baseline = self.progress.read().await;
+            (
+                baseline.baseline_known,
+                baseline.objects_total_count,
+                baseline.objects_total_size,
+                baseline.baseline_generation,
+            )
+        };
+        if baseline_known {
+            resume_manager
+                .set_progress_baseline(baseline_count, baseline_size, baseline_generation)
+                .await?;
+            checkpoint_manager
+                .set_progress_baseline(baseline_count, baseline_size, baseline_generation)
+                .await?;
+        }
 
         // 3. continue from checkpoint
         let current_bucket_index = checkpoint.current_bucket_index;
@@ -483,12 +503,66 @@ impl ErasureSetHealer {
         let mut successful_objects = state.successful_objects;
         let mut failed_objects = state.failed_objects;
         let mut skipped_objects = state.skipped_objects;
+        let checkpoint_has_progress = checkpoint.baseline_known
+            || checkpoint.successful_objects > 0
+            || checkpoint.failed_object_count > 0
+            || checkpoint.skipped_object_count > 0
+            || checkpoint.skipped_new_versions > 0
+            || checkpoint.skipped_ilm_expired > 0
+            || checkpoint.processed_bytes > 0
+            || checkpoint.total_objects > 0
+            || checkpoint.total_bytes > 0
+            || checkpoint.baseline_generation.is_some()
+            || checkpoint.counter_unknown;
+        let checkpoint_generation_mismatch = checkpoint.baseline_known && checkpoint.baseline_generation != baseline_generation;
+        let mut restored_counter_unknown = state.counter_unknown || checkpoint.counter_unknown;
+        if checkpoint_has_progress {
+            successful_objects = checkpoint.successful_objects;
+            failed_objects = checkpoint.failed_object_count;
+            skipped_objects = checkpoint.skipped_object_count;
+            let restored_processed_objects = successful_objects
+                .checked_add(failed_objects)
+                .and_then(|value| value.checked_add(skipped_objects))
+                .and_then(|value| value.checked_add(checkpoint.skipped_new_versions))
+                .and_then(|value| value.checked_add(checkpoint.skipped_ilm_expired));
+            let checkpoint_counter_overflow = restored_processed_objects.is_none();
+            restored_counter_unknown |= checkpoint_counter_overflow;
+            processed_objects = restored_processed_objects.unwrap_or(u64::MAX);
+            let mut progress = self.progress.write().await;
+            progress.objects_scanned = processed_objects;
+            progress.objects_healed = successful_objects;
+            progress.objects_failed = failed_objects;
+            progress.skipped_objects = skipped_objects;
+            progress.skipped_new_versions = checkpoint.skipped_new_versions;
+            progress.skipped_ilm_expired = checkpoint.skipped_ilm_expired;
+            if checkpoint.baseline_known && !checkpoint_generation_mismatch {
+                progress.objects_total_count = checkpoint.total_objects;
+                progress.objects_total_size = checkpoint.total_bytes;
+                progress.baseline_generation = checkpoint.baseline_generation;
+                progress.baseline_known = true;
+            }
+            progress.bytes_processed = checkpoint.processed_bytes;
+            progress.counter_unknown = state.counter_unknown || checkpoint.counter_unknown;
+            progress.refresh_progress_percentage();
+            if checkpoint_generation_mismatch || checkpoint_counter_overflow || progress.counter_unknown {
+                progress.mark_unknown();
+            }
+        }
+        if checkpoint_generation_mismatch {
+            restored_counter_unknown = true;
+        }
+        if restored_counter_unknown {
+            checkpoint_manager.mark_counter_unknown().await?;
+            resume_manager.mark_counter_unknown().await?;
+        }
         let mut failed_buckets = 0u64;
 
         // 4. process remaining buckets
         for (bucket_idx, bucket) in buckets.iter().enumerate().skip(current_bucket_index) {
             // check if completed
             if state.completed_buckets.contains(bucket) {
+                checkpoint_manager.complete_bucket(bucket_idx.saturating_add(1)).await?;
+                current_object_index = 0;
                 continue;
             }
 
@@ -516,13 +590,42 @@ impl ErasureSetHealer {
                 return bucket_result;
             }
 
-            // update checkpoint position
-            checkpoint_manager.update_position(bucket_idx, current_object_index).await?;
-
             // update progress
-            resume_manager
-                .update_progress(processed_objects, successful_objects, failed_objects, skipped_objects)
+            let progress_snapshot = self.progress.read().await;
+            let bytes_processed = progress_snapshot.bytes_processed;
+            let skipped_new_versions = progress_snapshot.skipped_new_versions;
+            let skipped_ilm_expired = progress_snapshot.skipped_ilm_expired;
+            let counter_unknown = progress_snapshot.counter_unknown;
+            drop(progress_snapshot);
+            // The checkpoint is the recovery authority for object progress.
+            // Publish its counters and fence before the resume summary so a
+            // crash between the two stores cannot make recovery select newer
+            // summary bytes with an older checkpoint ledger.
+            if counter_unknown {
+                checkpoint_manager.mark_counter_unknown().await?;
+            }
+            checkpoint_manager
+                .update_progress(successful_objects, failed_objects, skipped_objects, bytes_processed)
                 .await?;
+            checkpoint_manager
+                .set_skipped_version_counts(skipped_new_versions, skipped_ilm_expired)
+                .await?;
+            checkpoint_manager.update_position(bucket_idx, current_object_index).await?;
+            resume_manager
+                .update_progress_with_bytes(
+                    processed_objects,
+                    successful_objects,
+                    failed_objects,
+                    skipped_objects,
+                    bytes_processed,
+                )
+                .await?;
+            resume_manager
+                .set_skipped_version_counts(skipped_new_versions, skipped_ilm_expired)
+                .await?;
+            if counter_unknown {
+                resume_manager.mark_counter_unknown().await?;
+            }
 
             // check cancel status
             if self.cancel_token.is_cancelled() {
@@ -542,6 +645,7 @@ impl ErasureSetHealer {
             match bucket_result {
                 Ok(_) => {
                     resume_manager.complete_bucket(bucket).await?;
+                    checkpoint_manager.complete_bucket(bucket_idx.saturating_add(1)).await?;
                     debug!(
                         target: "rustfs::heal::erasure_healer",
                         event = EVENT_HEAL_ERASURE_BUCKET_STATE,
@@ -567,7 +671,9 @@ impl ErasureSetHealer {
                         error = %e,
                         "Erasure set bucket heal failed"
                     );
-                    // continue to next bucket, do not interrupt the whole process
+                    // A single durable cursor and ledger cannot safely preserve
+                    // this bucket while processing a later one.
+                    break;
                 }
             }
 
@@ -775,20 +881,49 @@ impl ErasureSetHealer {
 
                 // Per-version dedup identity — the single canonical key.
                 let key = compose_key(&item.name, item.version_id.as_deref());
-                if checkpoint.processed_objects.contains(&key) || checkpoint.skipped_objects.contains(&key) {
+                if checkpoint.processed_objects.contains(&key)
+                    || checkpoint.failed_objects.contains(&key)
+                    || checkpoint.skipped_objects.contains(&key)
+                {
                     continue;
                 }
 
                 if should_skip_new_version(item.mod_time_unix_nanos, started_at_secs) {
-                    checkpoint_manager.add_processed_object(key).await?;
-                    *processed_objects = processed_objects.saturating_add(1);
+                    let counter_ok = increment_counter(processed_objects);
                     completed_in_page = completed_in_page.saturating_add(1);
                     counter!("rustfs_heal_skipped_new_versions_total").increment(1);
-                    {
+                    let (outcome_record, counter_unknown) = {
                         let mut progress = self.progress.write().await;
                         progress.record_skipped_new_version();
                         progress.set_current_object(Some(format!("skipped_new: {bucket}/{}", item.name)));
-                        progress.update_progress(*processed_objects, *successful_objects, *failed_objects, bytes_processed);
+                        progress.update_object_progress(
+                            *processed_objects,
+                            *successful_objects,
+                            *failed_objects,
+                            *skipped_objects,
+                            bytes_processed,
+                        );
+                        if !counter_ok {
+                            progress.mark_unknown();
+                        }
+                        (
+                            CheckpointObjectOutcomeRecord {
+                                object: key,
+                                outcome: CheckpointObjectOutcome::Processed,
+                                successful: progress.objects_healed,
+                                failed: progress.objects_failed,
+                                skipped: progress.skipped_objects,
+                                bytes: progress.bytes_processed,
+                                skipped_new_versions: progress.skipped_new_versions,
+                                skipped_ilm_expired: progress.skipped_ilm_expired,
+                                counter_unknown: progress.counter_unknown,
+                            },
+                            progress.counter_unknown,
+                        )
+                    };
+                    checkpoint_manager.record_object_outcome(outcome_record).await?;
+                    if counter_unknown {
+                        resume_manager.mark_counter_unknown().await?;
                     }
                     debug!(
                         target: "rustfs::heal::erasure_healer",
@@ -820,15 +955,41 @@ impl ErasureSetHealer {
                         )
                         .await?
                 {
-                    checkpoint_manager.add_processed_object(key).await?;
-                    *processed_objects = processed_objects.saturating_add(1);
+                    let counter_ok = increment_counter(processed_objects);
                     completed_in_page = completed_in_page.saturating_add(1);
                     counter!("rustfs_heal_skipped_ilm_expired_total").increment(1);
-                    {
+                    let (outcome_record, counter_unknown) = {
                         let mut progress = self.progress.write().await;
                         progress.record_skipped_ilm_expired();
                         progress.set_current_object(Some(format!("skipped_ilm: {bucket}/{}", item.name)));
-                        progress.update_progress(*processed_objects, *successful_objects, *failed_objects, bytes_processed);
+                        progress.update_object_progress(
+                            *processed_objects,
+                            *successful_objects,
+                            *failed_objects,
+                            *skipped_objects,
+                            bytes_processed,
+                        );
+                        if !counter_ok {
+                            progress.mark_unknown();
+                        }
+                        (
+                            CheckpointObjectOutcomeRecord {
+                                object: key,
+                                outcome: CheckpointObjectOutcome::Processed,
+                                successful: progress.objects_healed,
+                                failed: progress.objects_failed,
+                                skipped: progress.skipped_objects,
+                                bytes: progress.bytes_processed,
+                                skipped_new_versions: progress.skipped_new_versions,
+                                skipped_ilm_expired: progress.skipped_ilm_expired,
+                                counter_unknown: progress.counter_unknown,
+                            },
+                            progress.counter_unknown,
+                        )
+                    };
+                    checkpoint_manager.record_object_outcome(outcome_record).await?;
+                    if counter_unknown {
+                        resume_manager.mark_counter_unknown().await?;
                     }
                     debug!(
                         target: "rustfs::heal::erasure_healer",
@@ -954,11 +1115,11 @@ impl ErasureSetHealer {
 
             while let Some((key, object, version_id, result)) = page_tasks.next().await {
                 let (object_size, result) = result;
-                match result {
+                let mut telemetry_unknown = false;
+                let checkpoint_outcome = match result {
                     Ok(true) => {
-                        *successful_objects += 1;
-                        bytes_processed = bytes_processed.saturating_add(object_size);
-                        checkpoint_manager.add_processed_object(key).await?;
+                        telemetry_unknown |= !increment_counter(successful_objects);
+                        telemetry_unknown |= !add_bytes(&mut bytes_processed, object_size);
                         debug!(
                             target: "rustfs::heal::erasure_healer",
                             event = EVENT_HEAL_ERASURE_OBJECT_STATE,
@@ -971,11 +1132,11 @@ impl ErasureSetHealer {
                             state = "healed",
                             "Erasure set object healed"
                         );
+                        CheckpointObjectOutcome::Processed
                     }
                     Ok(false) => {
-                        checkpoint_manager.add_processed_object(key).await?;
-                        *successful_objects += 1;
-                        bytes_processed = bytes_processed.saturating_add(object_size);
+                        telemetry_unknown |= !increment_counter(successful_objects);
+                        telemetry_unknown |= !add_bytes(&mut bytes_processed, object_size);
                         debug!(
                             target: "rustfs::heal::erasure_healer",
                             event = EVENT_HEAL_ERASURE_OBJECT_STATE,
@@ -988,12 +1149,12 @@ impl ErasureSetHealer {
                             state = "missing_treated_as_ok",
                             "Erasure set missing object treated as ok"
                         );
+                        CheckpointObjectOutcome::Processed
                     }
                     Err(err @ Error::TaskCancelled) | Err(err @ Error::TaskTimeout) => return Err(err),
                     Err(Error::TransientSkip { message }) => {
-                        *skipped_objects += 1;
-                        bytes_processed = bytes_processed.saturating_add(object_size);
-                        checkpoint_manager.add_skipped_object(key).await?;
+                        telemetry_unknown |= !increment_counter(skipped_objects);
+                        telemetry_unknown |= !add_bytes(&mut bytes_processed, object_size);
                         demote_to_debug_when!(!take_failure_log_sample(&mut transient_skip_samples_logged), warn, target: "rustfs::heal::erasure_healer", {
                             event = EVENT_HEAL_ERASURE_OBJECT_STATE,
                             component = LOG_COMPONENT_HEAL,
@@ -1006,11 +1167,11 @@ impl ErasureSetHealer {
                             error = %message,
                             "Erasure set object heal skipped due to transient error"
                         });
+                        CheckpointObjectOutcome::Skipped
                     }
                     Err(err) => {
-                        *failed_objects += 1;
-                        bytes_processed = bytes_processed.saturating_add(object_size);
-                        checkpoint_manager.add_failed_object(key).await?;
+                        telemetry_unknown |= !increment_counter(failed_objects);
+                        telemetry_unknown |= !add_bytes(&mut bytes_processed, object_size);
                         demote_to_debug_when!(!take_failure_log_sample(&mut failure_samples_logged), warn, target: "rustfs::heal::erasure_healer", {
                             event = EVENT_HEAL_ERASURE_OBJECT_STATE,
                             component = LOG_COMPONENT_HEAL,
@@ -1023,15 +1184,43 @@ impl ErasureSetHealer {
                             error = %err,
                             "Erasure set object heal failed"
                         });
+                        CheckpointObjectOutcome::Failed
                     }
-                }
+                };
 
-                *processed_objects += 1;
+                telemetry_unknown |= !increment_counter(processed_objects);
                 completed_in_page += 1;
-                {
+                let (outcome_record, counter_unknown) = {
                     let mut progress = self.progress.write().await;
                     progress.set_current_object(Some(format!("{bucket}/{object}")));
-                    progress.update_progress(*processed_objects, *successful_objects, *failed_objects, bytes_processed);
+                    progress.update_object_progress(
+                        *processed_objects,
+                        *successful_objects,
+                        *failed_objects,
+                        *skipped_objects,
+                        bytes_processed,
+                    );
+                    if telemetry_unknown {
+                        progress.mark_unknown();
+                    }
+                    (
+                        CheckpointObjectOutcomeRecord {
+                            object: key,
+                            outcome: checkpoint_outcome,
+                            successful: progress.objects_healed,
+                            failed: progress.objects_failed,
+                            skipped: progress.skipped_objects,
+                            bytes: progress.bytes_processed,
+                            skipped_new_versions: progress.skipped_new_versions,
+                            skipped_ilm_expired: progress.skipped_ilm_expired,
+                            counter_unknown: progress.counter_unknown,
+                        },
+                        progress.counter_unknown,
+                    )
+                };
+                checkpoint_manager.record_object_outcome(outcome_record).await?;
+                if counter_unknown {
+                    resume_manager.mark_counter_unknown().await?;
                 }
 
                 if completed_in_page.is_multiple_of(100) {
@@ -1041,16 +1230,22 @@ impl ErasureSetHealer {
 
             *current_object_index = global_obj_idx;
 
-            // Persist the authoritative cursor FIRST (points at the next page
-            // boundary), then prune the per-version dedup sets. Both are
-            // idempotent under crash: heal_object re-heals safely.
-            let next_cursor = if is_truncated { next_token.clone() } else { None };
-            resume_manager.set_resume_cursor(next_cursor.clone()).await?;
-            checkpoint_manager.complete_page(bucket_index, *current_object_index).await?;
+            // Persist the checkpoint ledger and page position before exposing
+            // the next resume cursor. A crash before cursor publication keeps
+            // the page identities available for exact-once replay.
+            checkpoint_manager.advance_page(bucket_index, *current_object_index).await?;
             // Check if there are more pages
             if !is_truncated {
                 break;
             }
+            continuation_token = next_heal_listing_token(bucket, "", next_token, is_truncated)?;
+            if continuation_token.is_none() {
+                // A truncated page without a continuation token is terminal.
+                // Retain its ledger until bucket completion is durable.
+                break;
+            }
+            resume_manager.set_resume_cursor(continuation_token.clone()).await?;
+            checkpoint_manager.prune_completed_page().await?;
 
             // Anti-loop guard: an empty page reported as truncated cannot advance
             // the cursor (there is no last identity to move past), so treat it as a
@@ -1069,12 +1264,6 @@ impl ErasureSetHealer {
                 )));
             }
             previous_page_last = page_last;
-
-            continuation_token = next_heal_listing_token(bucket, "", next_token, is_truncated)?;
-            if continuation_token.is_none() {
-                // Truncated but no continuation token: treat as end of listing.
-                break;
-            }
         }
 
         Ok(())
@@ -1083,10 +1272,66 @@ impl ErasureSetHealer {
     /// initialize progress tracking
     async fn initialize_progress(&self, _buckets: &[String], state: &crate::heal::resume::ResumeState) {
         let mut progress = self.progress.write().await;
-        progress.objects_scanned = state.total_objects;
+        let existing_baseline = (
+            progress.objects_total_count,
+            progress.objects_total_size,
+            progress.baseline_generation,
+            progress.progress_state,
+            progress.baseline_known,
+        );
+        let baseline_generation_mismatch =
+            state.baseline_known && existing_baseline.4 && state.baseline_generation != existing_baseline.2;
+        let use_persisted_baseline = state.baseline_known && !baseline_generation_mismatch;
+        progress.objects_scanned = state.processed_objects;
         progress.objects_healed = state.successful_objects;
         progress.objects_failed = state.failed_objects;
-        progress.bytes_processed = 0; // Resume state tracks object counts, not byte counters.
+        progress.skipped_objects = state.skipped_objects;
+        progress.skipped_new_versions = state.skipped_new_versions;
+        progress.skipped_ilm_expired = state.skipped_ilm_expired;
+        progress.bytes_processed = state.processed_bytes;
+        progress.counter_unknown = state.counter_unknown;
+        if use_persisted_baseline
+            || existing_baseline.0 > 0
+            || existing_baseline.1 > 0
+            || existing_baseline.2.is_some()
+            || existing_baseline.4
+        {
+            progress.objects_total_count = if use_persisted_baseline {
+                state.total_objects
+            } else {
+                existing_baseline.0
+            };
+            progress.objects_total_size = if use_persisted_baseline {
+                state.total_bytes
+            } else {
+                existing_baseline.1
+            };
+            progress.baseline_generation = if use_persisted_baseline {
+                state.baseline_generation
+            } else {
+                existing_baseline.2
+            };
+            progress.baseline_known = use_persisted_baseline
+                || existing_baseline.0 > 0
+                || existing_baseline.1 > 0
+                || existing_baseline.2.is_some()
+                || existing_baseline.4;
+        }
+        progress.progress_state = if use_persisted_baseline
+            || existing_baseline.0 > 0
+            || existing_baseline.1 > 0
+            || existing_baseline.2.is_some()
+            || existing_baseline.4
+        {
+            crate::heal::progress::HealProgressState::Running
+        } else {
+            crate::heal::progress::HealProgressState::Indeterminate
+        };
+        if baseline_generation_mismatch || state.counter_unknown {
+            progress.mark_unknown();
+        }
+        progress.ledger_complete = false;
+        progress.refresh_progress_percentage();
         progress.start_time = UNIX_EPOCH.checked_add(Duration::from_secs(state.start_time));
         progress.last_update_time = UNIX_EPOCH.checked_add(Duration::from_secs(state.last_update));
         progress.set_current_object(state.current_object.clone());
@@ -1264,8 +1509,8 @@ mod resume_loop_tests {
     };
     use crate::heal::progress::HealProgress;
     use crate::heal::resume::{
-        CheckpointManager, RESUME_CHECKPOINT_FILE, ReplacementTargetIdentity, ResumeDeleteFailure, ResumeManager, ResumeUtils,
-        compose_key,
+        CheckpointManager, CheckpointObjectOutcome, CheckpointObjectOutcomeRecord, RESUME_CHECKPOINT_FILE,
+        ReplacementTargetIdentity, ResumeDeleteFailure, ResumeManager, ResumeUtils, compose_key,
     };
     use crate::heal::storage::{HealLifecycleExpiryContext, HealListItem, HealObjectInfo, HealStorageAPI};
     use crate::heal::storage_api::status::BucketInfo;
@@ -1405,6 +1650,7 @@ mod resume_loop_tests {
         list_include_lifecycle_object_info: Mutex<Vec<bool>>,
         replacement_target_identity_sequences: Mutex<VecDeque<Vec<ReplacementTargetIdentity>>>,
         fail_listing: AtomicBool,
+        fail_listing_buckets: Mutex<HashSet<String>>,
     }
 
     impl FakeStorage {
@@ -1441,6 +1687,9 @@ mod resume_loop_tests {
         fn fail_listing(&self) {
             self.fail_listing.store(true, Ordering::SeqCst);
         }
+        fn fail_bucket_listing(&self, bucket: &str) {
+            self.fail_listing_buckets.lock().unwrap().insert(bucket.to_string());
+        }
     }
 
     #[async_trait::async_trait]
@@ -1531,7 +1780,7 @@ mod resume_loop_tests {
         }
         async fn list_objects_for_heal_page(
             &self,
-            _bucket: &str,
+            bucket: &str,
             _prefix: &str,
             continuation_token: Option<&str>,
             include_lifecycle_object_info: bool,
@@ -1540,7 +1789,7 @@ mod resume_loop_tests {
                 .lock()
                 .unwrap()
                 .push(include_lifecycle_object_info);
-            if self.fail_listing.load(Ordering::SeqCst) {
+            if self.fail_listing.load(Ordering::SeqCst) || self.fail_listing_buckets.lock().unwrap().contains(bucket) {
                 return Err(Error::other("injected listing failure"));
             }
             let key = continuation_token.map(str::to_string);
@@ -1918,6 +2167,49 @@ mod resume_loop_tests {
         assert!(state.completed_buckets.is_empty(), "the failed bucket must remain resumable");
     }
 
+    #[tokio::test]
+    async fn bucket_failure_stops_before_a_later_bucket_checkpoint() {
+        let env = make_env().await;
+        let task_id = ResumeUtils::generate_task_id();
+        let buckets = vec!["a".to_string(), "b".to_string()];
+        let resume = ResumeManager::new(
+            env.healer.disk.clone(),
+            task_id.clone(),
+            "erasure_set".to_string(),
+            "pool_0_set_0".to_string(),
+            buckets.clone(),
+        )
+        .await
+        .unwrap();
+        let checkpoint = CheckpointManager::new(env.healer.disk.clone(), task_id.clone())
+            .await
+            .unwrap();
+        env.storage.fail_bucket_listing("a");
+        for _ in 0..3 {
+            assert!(resume.schedule_retry().await.unwrap());
+        }
+
+        env.healer
+            .execute_heal_with_resume(&buckets, "pool_0_set_0", &resume, &checkpoint)
+            .await
+            .expect_err("the first bucket failure must keep the pass incomplete");
+        let persisted = checkpoint.get_checkpoint().await;
+        assert_eq!(persisted.current_bucket_index, 0);
+        assert!(resume.get_state().await.completed_buckets.is_empty());
+
+        let resumed = ResumeManager::load_from_disk(env.healer.disk.clone(), &task_id)
+            .await
+            .unwrap();
+        let checkpoint = CheckpointManager::load_from_disk(env.healer.disk.clone(), &task_id)
+            .await
+            .unwrap();
+        env.healer
+            .execute_heal_with_resume(&buckets, "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect_err("recovery must retry the earlier failed bucket");
+        assert!(!resumed.get_state().await.completed);
+    }
+
     #[tokio::test]
     async fn completed_resume_state_is_not_selected_for_a_new_heal() {
         let env = make_env().await;
@@ -2107,8 +2399,175 @@ mod resume_loop_tests {
         let mut names: Vec<String> = env.storage.calls().into_iter().map(|(n, _)| n).collect();
         names.sort();
         assert_eq!(names, vec!["a", "b", "c", "d"], "every object exactly once, none dropped/doubled");
-        // Final page not truncated => cursor cleared.
-        assert_eq!(env.resume.resume_cursor().await, None);
+        // Keep the final page cursor until the outer loop durably completes the
+        // bucket, so a crash can replay only this page against its identities.
+        assert_eq!(env.resume.resume_cursor().await, Some("t1".to_string()));
+    }
+
+    #[tokio::test]
+    async fn persisted_failure_waits_for_the_bounded_retry_after_page_replay() {
+        let env = make_env().await;
+        env.storage.set_page(
+            None,
+            Page {
+                items: vec![item("object", Some("v1"), false)],
+                next: None,
+                truncated: false,
+            },
+        );
+        env.checkpoint
+            .record_object_outcome(CheckpointObjectOutcomeRecord {
+                object: compose_key("object", Some("v1")),
+                outcome: CheckpointObjectOutcome::Failed,
+                successful: 0,
+                failed: 1,
+                skipped: 0,
+                bytes: 0,
+                skipped_new_versions: 0,
+                skipped_ilm_expired: 0,
+                counter_unknown: false,
+            })
+            .await
+            .unwrap();
+        env.checkpoint.advance_page(0, 1).await.unwrap();
+
+        let resumed = ResumeManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        let checkpoint = CheckpointManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+
+        env.healer
+            .execute_heal_with_resume(&["b".to_string()], "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect_err("the persisted failure must schedule a bounded retry");
+        assert!(
+            env.storage.calls().is_empty(),
+            "the failed identity must not be repeated in the same pass"
+        );
+
+        env.healer
+            .execute_heal_with_resume(&["b".to_string()], "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect("the bounded retry must heal the object");
+        assert_eq!(env.storage.calls(), vec![("object".to_string(), Some("v1".to_string()))]);
+        let state = resumed.get_state().await;
+        assert_eq!(state.successful_objects, 1);
+        assert_eq!(state.failed_objects, 0);
+    }
+
+    #[tokio::test]
+    async fn final_page_crash_replays_only_the_retained_page_identities() {
+        let env = make_env().await;
+        env.storage.set_page(
+            None,
+            Page {
+                items: vec![item("first", Some("v1"), false)],
+                next: Some("final-page".to_string()),
+                truncated: true,
+            },
+        );
+        env.storage.set_page(
+            Some("final-page"),
+            Page {
+                items: vec![item("last", Some("v1"), false)],
+                next: None,
+                truncated: false,
+            },
+        );
+
+        let (processed, successful, failed, skipped, result) = run(&env).await;
+        result.expect("the bucket pass must finish before the simulated crash");
+        assert_eq!((processed, successful, failed, skipped), (2, 2, 0, 0));
+
+        let resumed = ResumeManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        let checkpoint = CheckpointManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        env.healer
+            .execute_heal_with_resume(&["b".to_string()], "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect("the retained final-page ledger must make recovery exact");
+
+        assert_eq!(
+            env.storage.calls(),
+            vec![
+                ("first".to_string(), Some("v1".to_string())),
+                ("last".to_string(), Some("v1".to_string()))
+            ]
+        );
+        let state = resumed.get_state().await;
+        assert_eq!(state.successful_objects, 2);
+        assert_eq!(state.processed_objects, 2);
+    }
+
+    #[tokio::test]
+    async fn truncated_page_without_token_retains_its_replay_ledger() {
+        let env = make_env().await;
+        env.storage.set_page(
+            None,
+            Page {
+                items: vec![item("object", Some("v1"), false)],
+                next: None,
+                truncated: true,
+            },
+        );
+
+        let (processed, successful, failed, skipped, result) = run(&env).await;
+        result.expect("the tokenless truncated page is a terminal page");
+        assert_eq!((processed, successful, failed, skipped), (1, 1, 0, 0));
+
+        let resumed = ResumeManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        let checkpoint = CheckpointManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        env.healer
+            .execute_heal_with_resume(&["b".to_string()], "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect("terminal-page recovery must not replay a durable identity");
+
+        assert_eq!(env.storage.calls(), vec![("object".to_string(), Some("v1".to_string()))]);
+        let state = resumed.get_state().await;
+        assert_eq!(state.successful_objects, 1);
+        assert_eq!(state.processed_objects, 1);
+    }
+
+    #[tokio::test]
+    async fn completed_bucket_reconciles_its_final_page_checkpoint_after_crash() {
+        let env = make_env().await;
+        env.storage.set_page(
+            None,
+            Page {
+                items: vec![item("object", Some("v1"), false)],
+                next: None,
+                truncated: false,
+            },
+        );
+
+        let (_, _, _, _, result) = run(&env).await;
+        result.expect("the bucket pass must finish before the simulated crash");
+        env.resume.complete_bucket("b").await.unwrap();
+
+        let resumed = ResumeManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        let checkpoint = CheckpointManager::load_from_disk(env.healer.disk.clone(), &env.task_id)
+            .await
+            .unwrap();
+        env.healer
+            .execute_heal_with_resume(&["b".to_string()], "pool_0_set_0", &resumed, &checkpoint)
+            .await
+            .expect("recovery must finish the checkpoint transition without replaying the bucket");
+
+        assert_eq!(env.storage.calls(), vec![("object".to_string(), Some("v1".to_string()))]);
+        let checkpoint = checkpoint.get_checkpoint().await;
+        assert_eq!(checkpoint.current_bucket_index, 1);
+        assert!(checkpoint.processed_objects.is_empty());
     }
 
     #[tokio::test]

crates/heal/src/heal/manager.rs

@@ -2011,34 +2011,11 @@ impl HealManager {
             return None;
         }
 
-        let mut snapshot = HealProgress::default();
+        let mut progresses = Vec::with_capacity(active_tasks.len());
         for task in active_tasks {
-            let progress = task.get_progress().await;
-            snapshot.objects_scanned = snapshot.objects_scanned.saturating_add(progress.objects_scanned);
-            snapshot.objects_healed = snapshot.objects_healed.saturating_add(progress.objects_healed);
-            snapshot.objects_failed = snapshot.objects_failed.saturating_add(progress.objects_failed);
-            snapshot.skipped_new_versions = snapshot.skipped_new_versions.saturating_add(progress.skipped_new_versions);
-            snapshot.skipped_ilm_expired = snapshot.skipped_ilm_expired.saturating_add(progress.skipped_ilm_expired);
-            snapshot.objects_total_count = snapshot.objects_total_count.saturating_add(progress.objects_total_count);
-            snapshot.objects_total_size = snapshot.objects_total_size.saturating_add(progress.objects_total_size);
-            snapshot.bytes_processed = snapshot.bytes_processed.saturating_add(progress.bytes_processed);
-            snapshot.start_time = match (snapshot.start_time, progress.start_time) {
-                (Some(current), Some(next)) => Some(current.min(next)),
-                (None, next) => next,
-                (current, None) => current,
-            };
-            snapshot.last_update_time = match (snapshot.last_update_time, progress.last_update_time) {
-                (Some(current), Some(next)) => Some(current.max(next)),
-                (None, next) => next,
-                (current, None) => current,
-            };
-            if progress.current_object.is_some() {
-                snapshot.current_object = progress.current_object;
-            }
+            progresses.push(task.get_progress().await);
         }
-        snapshot.refresh_progress_percentage();
-        snapshot.refresh_estimated_completion_time();
-        Some(snapshot)
+        crate::heal::progress::aggregate_heal_progress(progresses)
     }
 }
 

crates/heal/src/heal/progress.rs

@@ -15,15 +15,91 @@
 use serde::{Deserialize, Serialize};
 use std::time::{Duration, SystemTime};
 
-#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+pub(crate) fn stable_generation(parts: &[&[u8]]) -> u64 {
+    let mut hash = 0xcbf29ce484222325u64;
+    for part in parts {
+        for byte in (part.len() as u64).to_be_bytes().into_iter().chain(part.iter().copied()) {
+            hash ^= u64::from(byte);
+            hash = hash.wrapping_mul(0x100000001b3);
+        }
+    }
+    hash
+}
+
+#[cfg(test)]
+mod stable_generation_tests {
+    use super::stable_generation;
+
+    #[test]
+    fn stable_generation_has_a_fixed_vector() {
+        assert_eq!(stable_generation(&[b"rustfs", b"heal", b"42"]), 11_007_672_338_488_385_056);
+    }
+}
+
+pub(crate) fn increment_counter(counter: &mut u64) -> bool {
+    match counter.checked_add(1) {
+        Some(next) => {
+            *counter = next;
+            true
+        }
+        None => {
+            *counter = u64::MAX;
+            false
+        }
+    }
+}
+
+pub(crate) fn add_bytes(total: &mut u64, amount: u64) -> bool {
+    match total.checked_add(amount) {
+        Some(next) => {
+            *total = next;
+            true
+        }
+        None => {
+            *total = u64::MAX;
+            false
+        }
+    }
+}
+
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
+pub enum HealProgressKind {
+    #[default]
+    Unknown,
+    Stage,
+    ObjectSweep,
+}
+
+/// Whether the object ledger can produce a meaningful percentage.
+///
+/// A zero-valued baseline is not a completed scan: it means that no complete
+/// usage snapshot was available.  Keep this state explicit so callers do not
+/// mistake the legacy `0.0` wire value for a measured zero-percent result.
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub enum HealProgressState {
+    #[default]
+    Unknown,
+    Indeterminate,
+    Running,
+    Completed,
+}
+
+#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(default, rename_all = "camelCase")]
 pub struct HealProgress {
+    #[serde(default)]
+    pub kind: HealProgressKind,
     /// Objects scanned
     pub objects_scanned: u64,
     /// Objects healed
     pub objects_healed: u64,
     /// Objects failed
     pub objects_failed: u64,
+    /// Versions deferred for a later retry pass.
+    #[serde(default)]
+    pub skipped_objects: u64,
     /// Versions skipped because they were written after this heal started
     pub skipped_new_versions: u64,
     /// Versions skipped because lifecycle already selected them for expiry
@@ -44,11 +120,38 @@ pub struct HealProgress {
     pub last_update_time: Option<SystemTime>,
     /// Estimated completion time
     pub estimated_completion_time: Option<SystemTime>,
+    /// Current stage number. Stage updates are intentionally independent from
+    /// the object ledger below.
+    #[serde(default)]
+    pub stage_current: u64,
+    /// Number of stages in the current task.
+    #[serde(default)]
+    pub stage_total: u64,
+    /// Explicitly distinguishes a missing usage baseline from measured 0%.
+    #[serde(default)]
+    pub progress_state: HealProgressState,
+    /// True only after the task's durable completion ledger was committed.
+    #[serde(default)]
+    pub ledger_complete: bool,
+    /// Generation of the usage snapshot used for the baseline, if available.
+    #[serde(default)]
+    pub baseline_generation: Option<u64>,
+    /// Whether the baseline was explicitly observed.  This is separate from
+    /// the counters so a known empty scope (0 objects, 0 bytes) is not
+    /// confused with a legacy snapshot that omitted the baseline fields.
+    #[serde(default)]
+    pub baseline_known: bool,
+    /// Internal telemetry fence set when an aggregate counter overflows or
+    /// becomes inconsistent.  It prevents a later refresh from fabricating a
+    /// percentage from the poisoned values.
+    #[serde(default)]
+    pub counter_unknown: bool,
 }
 
 impl HealProgress {
     pub fn new() -> Self {
         Self {
+            kind: HealProgressKind::Unknown,
             start_time: Some(SystemTime::now()),
             last_update_time: Some(SystemTime::now()),
             ..Default::default()
@@ -56,12 +159,87 @@ impl HealProgress {
     }
 
     pub fn update_progress(&mut self, scanned: u64, healed: u64, failed: u64, bytes: u64) {
+        self.update_object_sweep_progress(scanned, healed, failed, bytes);
+    }
+
+    pub fn update_object_sweep_progress(&mut self, scanned: u64, healed: u64, failed: u64, bytes: u64) {
+        self.kind = HealProgressKind::ObjectSweep;
         self.objects_scanned = scanned;
         self.objects_healed = healed;
         self.objects_failed = failed;
         self.bytes_processed = bytes;
         self.last_update_time = Some(SystemTime::now());
 
+        let explicit_skipped = match self.skipped_new_versions.checked_add(self.skipped_ilm_expired) {
+            Some(value) => value,
+            None => {
+                self.mark_unknown();
+                0
+            }
+        };
+        let skipped = healed
+            .checked_add(failed)
+            .and_then(|value| value.checked_add(explicit_skipped))
+            .and_then(|value| scanned.checked_sub(value))
+            .unwrap_or(0);
+        self.update_object_progress(scanned, healed, failed, skipped, bytes);
+    }
+
+    /// Update task stage progress without modifying object counters.
+    pub fn update_stage(&mut self, current: u64, total: u64) {
+        let object_sweep_active = matches!(self.kind, HealProgressKind::ObjectSweep);
+        if !object_sweep_active {
+            self.kind = HealProgressKind::Stage;
+        }
+        self.ledger_complete = false;
+        self.stage_current = current.min(total);
+        self.stage_total = total;
+        if object_sweep_active {
+            self.last_update_time = Some(SystemTime::now());
+            self.refresh_progress_percentage();
+            return;
+        }
+        self.progress_state = if total == 0 {
+            HealProgressState::Indeterminate
+        } else {
+            HealProgressState::Running
+        };
+        self.progress_percentage = if total == 0 {
+            0.0
+        } else {
+            (current as f64 / total as f64 * 100.0).min(100.0)
+        };
+        self.last_update_time = Some(SystemTime::now());
+    }
+
+    /// Update the disjoint object ledger. `scanned` is the number of terminal
+    /// object outcomes and must equal healed + failed + deferred skipped plus
+    /// the two terminal skip classes. Overflow is a corrupt/unknown counter
+    /// state, not a reason to abort a completed heal.
+    pub fn update_object_progress(&mut self, scanned: u64, healed: u64, failed: u64, skipped: u64, bytes: u64) {
+        self.kind = HealProgressKind::ObjectSweep;
+        // `skipped` is the transient/deferred class.  The two explicit skip
+        // counters are terminal classifications too, so include them in the
+        // same ledger without making callers maintain a second aggregate.
+        let outcomes = healed
+            .checked_add(failed)
+            .and_then(|value| value.checked_add(skipped))
+            .and_then(|value| value.checked_add(self.skipped_new_versions))
+            .and_then(|value| value.checked_add(self.skipped_ilm_expired));
+        self.objects_scanned = scanned;
+        self.objects_healed = healed;
+        self.objects_failed = failed;
+        self.skipped_objects = skipped;
+        self.bytes_processed = bytes;
+        self.last_update_time = Some(SystemTime::now());
+        self.ledger_complete = false;
+        if outcomes != Some(scanned) {
+            // Telemetry corruption must not abort a heal.  Preserve the
+            // counters for diagnostics, but do not derive a percentage from a
+            // double-counted or overflowing ledger.
+            self.mark_unknown();
+            return;
+        }
         self.refresh_progress_percentage();
         self.refresh_estimated_completion_time();
     }
@@ -69,50 +247,88 @@ impl HealProgress {
     pub fn set_total_baseline(&mut self, objects_total_count: u64, objects_total_size: u64) {
         self.objects_total_count = objects_total_count;
         self.objects_total_size = objects_total_size;
+        self.baseline_known = true;
         self.last_update_time = Some(SystemTime::now());
         self.refresh_progress_percentage();
         self.refresh_estimated_completion_time();
     }
 
+    pub fn set_total_baseline_with_generation(&mut self, objects_total_count: u64, objects_total_size: u64, generation: u64) {
+        self.baseline_generation = Some(generation);
+        self.set_total_baseline(objects_total_count, objects_total_size);
+    }
+
     pub fn record_skipped_new_version(&mut self) {
-        self.skipped_new_versions = self.skipped_new_versions.saturating_add(1);
+        let Some(next) = self.skipped_new_versions.checked_add(1) else {
+            self.mark_unknown();
+            return;
+        };
+        self.skipped_new_versions = next;
         self.last_update_time = Some(SystemTime::now());
         self.refresh_progress_percentage();
         self.refresh_estimated_completion_time();
     }
 
     pub fn record_skipped_ilm_expired(&mut self) {
-        self.skipped_ilm_expired = self.skipped_ilm_expired.saturating_add(1);
+        let Some(next) = self.skipped_ilm_expired.checked_add(1) else {
+            self.mark_unknown();
+            return;
+        };
+        self.skipped_ilm_expired = next;
         self.last_update_time = Some(SystemTime::now());
         self.refresh_progress_percentage();
         self.refresh_estimated_completion_time();
     }
 
-    fn completed_for_baseline(&self) -> u64 {
+    fn completed_for_baseline(&self) -> Option<u64> {
         self.objects_healed
-            .saturating_add(self.objects_failed)
-            .saturating_add(self.skipped_new_versions)
-            .saturating_add(self.skipped_ilm_expired)
+            .checked_add(self.objects_failed)?
+            .checked_add(self.skipped_objects)?
+            .checked_add(self.skipped_new_versions)?
+            .checked_add(self.skipped_ilm_expired)
     }
 
     pub(crate) fn refresh_progress_percentage(&mut self) {
+        if self.ledger_complete {
+            self.progress_state = HealProgressState::Completed;
+            self.progress_percentage = 100.0;
+            return;
+        }
+        if self.counter_unknown {
+            self.progress_state = HealProgressState::Unknown;
+            self.progress_percentage = 0.0;
+            return;
+        }
+        if !self.baseline_known {
+            self.progress_state = HealProgressState::Indeterminate;
+            self.progress_percentage = 0.0;
+            self.estimated_completion_time = None;
+            return;
+        }
         if self.objects_total_size > 0 {
             self.progress_percentage = ((self.bytes_processed as f64 / self.objects_total_size as f64) * 100.0).min(100.0);
+            self.progress_percentage = self.progress_percentage.min(99.999);
+            self.progress_state = HealProgressState::Running;
             return;
         }
         if self.objects_total_count > 0 {
-            let completed = self.completed_for_baseline();
+            let Some(completed) = self.completed_for_baseline() else {
+                self.progress_state = HealProgressState::Unknown;
+                self.progress_percentage = 0.0;
+                return;
+            };
             self.progress_percentage = ((completed as f64 / self.objects_total_count as f64) * 100.0).min(100.0);
+            self.progress_percentage = self.progress_percentage.min(99.999);
+            self.progress_state = HealProgressState::Running;
             return;
         }
-
-        let total = self
-            .objects_scanned
-            .saturating_add(self.objects_healed)
-            .saturating_add(self.objects_failed);
-        if total > 0 {
-            self.progress_percentage = (self.objects_healed as f64 / total as f64) * 100.0;
+        if self.baseline_known {
+            self.progress_state = HealProgressState::Running;
+            self.progress_percentage = 0.0;
+            return;
         }
+        self.progress_state = HealProgressState::Indeterminate;
+        self.progress_percentage = 0.0;
     }
 
     pub fn set_current_object(&mut self, object: Option<String>) {
@@ -125,7 +341,11 @@ impl HealProgress {
             self.estimated_completion_time = None;
             return;
         };
-        if self.is_completed() || !(0.0..100.0).contains(&self.progress_percentage) || self.bytes_processed == 0 {
+        if self.is_completed()
+            || self.progress_percentage <= 0.0
+            || self.progress_percentage >= 100.0
+            || self.bytes_processed == 0
+        {
             self.estimated_completion_time = None;
             return;
         }
@@ -142,18 +362,39 @@ impl HealProgress {
     }
 
     pub fn is_completed(&self) -> bool {
-        if self.progress_percentage >= 100.0 {
-            return true;
-        }
-        if self.objects_total_count > 0 || self.objects_total_size > 0 {
-            return false;
-        }
+        self.ledger_complete
+    }
 
-        self.objects_scanned > 0 && self.objects_healed.saturating_add(self.objects_failed) >= self.objects_scanned
+    /// Mark telemetry unknown while allowing the underlying heal operation to
+    /// continue.  This is used for corrupt/overflowing counters at the
+    /// observability boundary; it must never turn a successful heal into an
+    /// execution error.
+    pub fn mark_unknown(&mut self) {
+        self.counter_unknown = true;
+        self.progress_state = HealProgressState::Unknown;
+        self.ledger_complete = false;
+        self.progress_percentage = 0.0;
+        self.estimated_completion_time = None;
+        self.last_update_time = Some(SystemTime::now());
+    }
+
+    /// Mark the object ledger terminal only after the enclosing task has
+    /// committed all durable resume state and cleanup fences.
+    pub fn mark_completed(&mut self) {
+        let telemetry_unknown = self.counter_unknown || self.progress_state == HealProgressState::Unknown;
+        self.ledger_complete = true;
+        if !telemetry_unknown {
+            self.progress_state = HealProgressState::Completed;
+        }
+        self.progress_percentage = 100.0;
+        self.last_update_time = Some(SystemTime::now());
+        self.estimated_completion_time = None;
     }
 
     pub fn get_success_rate(&self) -> f64 {
-        let total = self.objects_healed + self.objects_failed;
+        let Some(total) = self.objects_healed.checked_add(self.objects_failed) else {
+            return 0.0;
+        };
         if total > 0 {
             (self.objects_healed as f64 / total as f64) * 100.0
         } else {
@@ -162,6 +403,101 @@ impl HealProgress {
     }
 }
 
+pub fn aggregate_heal_progress(progresses: impl IntoIterator<Item = HealProgress>) -> Option<HealProgress> {
+    let mut snapshot = HealProgress::default();
+    let mut found = false;
+    let mut has_object_sweep = false;
+    let mut all_object_baselines_known = true;
+    let mut baseline_generation = None;
+    let mut baseline_generation_consistent = true;
+    let mut all_ledgers_complete = true;
+    let mut counter_overflow = false;
+
+    for progress in progresses {
+        found = true;
+        let object_sweep = matches!(progress.kind, HealProgressKind::ObjectSweep);
+        has_object_sweep |= object_sweep;
+        all_ledgers_complete &= progress.ledger_complete;
+        if object_sweep {
+            all_object_baselines_known &= progress.baseline_known;
+            match baseline_generation {
+                None => baseline_generation = Some(progress.baseline_generation),
+                Some(generation) => baseline_generation_consistent &= generation == progress.baseline_generation,
+            }
+        }
+        counter_overflow |= progress.counter_unknown || matches!(progress.progress_state, HealProgressState::Unknown);
+        for (target, value) in [
+            (&mut snapshot.objects_scanned, progress.objects_scanned),
+            (&mut snapshot.objects_healed, progress.objects_healed),
+            (&mut snapshot.objects_failed, progress.objects_failed),
+            (&mut snapshot.skipped_objects, progress.skipped_objects),
+            (&mut snapshot.skipped_new_versions, progress.skipped_new_versions),
+            (&mut snapshot.skipped_ilm_expired, progress.skipped_ilm_expired),
+            (&mut snapshot.objects_total_count, progress.objects_total_count),
+            (&mut snapshot.objects_total_size, progress.objects_total_size),
+            (&mut snapshot.bytes_processed, progress.bytes_processed),
+            (&mut snapshot.stage_current, progress.stage_current),
+            (&mut snapshot.stage_total, progress.stage_total),
+        ] {
+            match target.checked_add(value) {
+                Some(sum) => *target = sum,
+                None => {
+                    *target = u64::MAX;
+                    counter_overflow = true;
+                }
+            }
+        }
+        snapshot.start_time = match (snapshot.start_time, progress.start_time) {
+            (Some(current), Some(next)) => Some(current.min(next)),
+            (None, next) => next,
+            (current, None) => current,
+        };
+        snapshot.last_update_time = match (snapshot.last_update_time, progress.last_update_time) {
+            (Some(current), Some(next)) => Some(current.max(next)),
+            (None, next) => next,
+            (current, None) => current,
+        };
+        if progress.current_object.is_some() {
+            snapshot.current_object = progress.current_object;
+        }
+    }
+
+    if !found {
+        return None;
+    }
+
+    snapshot.kind = if has_object_sweep {
+        HealProgressKind::ObjectSweep
+    } else {
+        HealProgressKind::Stage
+    };
+    snapshot.baseline_known = has_object_sweep && all_object_baselines_known && baseline_generation_consistent;
+    snapshot.baseline_generation = if snapshot.baseline_known && baseline_generation_consistent {
+        baseline_generation.flatten()
+    } else {
+        None
+    };
+    snapshot.ledger_complete = all_ledgers_complete;
+    snapshot.counter_unknown = counter_overflow;
+    if counter_overflow {
+        snapshot.progress_state = HealProgressState::Unknown;
+        snapshot.progress_percentage = if snapshot.ledger_complete { 100.0 } else { 0.0 };
+    } else if snapshot.ledger_complete {
+        snapshot.progress_state = HealProgressState::Completed;
+        snapshot.progress_percentage = 100.0;
+    } else if has_object_sweep {
+        snapshot.refresh_progress_percentage();
+    } else if snapshot.stage_total == 0 {
+        snapshot.progress_state = HealProgressState::Indeterminate;
+        snapshot.progress_percentage = 0.0;
+    } else {
+        snapshot.progress_state = HealProgressState::Running;
+        snapshot.progress_percentage = ((snapshot.stage_current as f64 / snapshot.stage_total as f64) * 100.0).min(99.999);
+    }
+    snapshot.refresh_estimated_completion_time();
+    Some(snapshot)
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct HealStatistics {
     /// Total heal tasks
@@ -230,6 +566,7 @@ mod tests {
         assert_eq!(progress.objects_scanned, 0);
         assert_eq!(progress.objects_healed, 0);
         assert_eq!(progress.objects_failed, 0);
+        assert_eq!(progress.skipped_objects, 0);
         assert_eq!(progress.skipped_new_versions, 0);
         assert_eq!(progress.skipped_ilm_expired, 0);
         assert_eq!(progress.objects_total_count, 0);
@@ -250,10 +587,8 @@ mod tests {
         assert_eq!(progress.objects_healed, 8);
         assert_eq!(progress.objects_failed, 2);
         assert_eq!(progress.bytes_processed, 1024);
-        // Progress percentage should be calculated based on healed/total
-        // total = scanned + healed + failed = 10 + 8 + 2 = 20
-        // healed/total = 8/20 = 0.4 = 40%
-        assert!((progress.progress_percentage - 40.0).abs() < 0.001);
+        assert_eq!(progress.progress_state, HealProgressState::Indeterminate);
+        assert_eq!(progress.progress_percentage, 0.0);
         assert!(progress.last_update_time.is_some());
     }
 
@@ -262,7 +597,8 @@ mod tests {
         let mut progress = HealProgress::new();
         progress.start_time = Some(SystemTime::now() - Duration::from_secs(10));
 
-        progress.update_progress(100, 25, 0, 4096);
+        progress.set_total_baseline(100, 16384);
+        progress.update_progress(25, 25, 0, 4096);
 
         let eta = progress
             .estimated_completion_time
@@ -275,7 +611,7 @@ mod tests {
         let mut progress = HealProgress::new();
         progress.set_total_baseline(10, 8192);
 
-        progress.update_progress(100, 25, 0, 4096);
+        progress.update_progress(25, 25, 0, 4096);
 
         assert!((progress.progress_percentage - 50.0).abs() < 0.001);
     }
@@ -285,7 +621,7 @@ mod tests {
         let mut progress = HealProgress::new();
         progress.set_total_baseline(10, 0);
 
-        progress.update_progress(100, 3, 2, 0);
+        progress.update_progress(5, 3, 2, 0);
 
         assert!((progress.progress_percentage - 50.0).abs() < 0.001);
     }
@@ -295,7 +631,7 @@ mod tests {
         let mut progress = HealProgress::new();
         progress.set_total_baseline(10, 0);
 
-        progress.update_progress(100, 3, 2, 0);
+        progress.update_progress(5, 3, 2, 0);
         progress.record_skipped_new_version();
 
         assert_eq!(progress.skipped_new_versions, 1);
@@ -336,7 +672,8 @@ mod tests {
     fn test_heal_progress_update_progress_all_healed() {
         let mut progress = HealProgress::new();
         // When scanned=0, healed=10, failed=0: total=10, progress = 10/10 = 100%
-        progress.update_progress(0, 10, 0, 2048);
+        progress.update_progress(10, 10, 0, 2048);
+        progress.mark_completed();
 
         // All healed, should be 100%
         assert!((progress.progress_percentage - 100.0).abs() < 0.001);
@@ -394,6 +731,7 @@ mod tests {
         assert_eq!(json["objectsScanned"], 10);
         assert_eq!(json["objectsHealed"], 8);
         assert_eq!(json["objectsFailed"], 2);
+        assert_eq!(json["skippedObjects"], 0);
         assert_eq!(json["skippedNewVersions"], 0);
         assert_eq!(json["skippedIlmExpired"], 0);
         assert_eq!(json["bytesProcessed"], 1024);
@@ -405,6 +743,7 @@ mod tests {
     fn test_heal_progress_is_completed_by_percentage() {
         let mut progress = HealProgress::new();
         progress.update_progress(10, 10, 0, 1024);
+        progress.mark_completed();
 
         assert!(progress.is_completed());
     }
@@ -415,7 +754,7 @@ mod tests {
         progress.objects_scanned = 10;
         progress.objects_healed = 8;
         progress.objects_failed = 2;
-        // healed + failed = 8 + 2 = 10 >= scanned = 10
+        progress.mark_completed();
         assert!(progress.is_completed());
     }
 
@@ -455,6 +794,108 @@ mod tests {
         assert!((progress.get_success_rate() - 100.0).abs() < 0.001);
     }
 
+    #[test]
+    fn single_object_progress_reaches_terminal_100() {
+        let mut progress = HealProgress::new();
+        progress.update_object_progress(1, 1, 0, 0, 128);
+        assert!(!progress.is_completed());
+        progress.mark_completed();
+        assert!(progress.is_completed());
+        assert_eq!(progress.progress_percentage, 100.0);
+    }
+
+    #[test]
+    fn progress_without_baseline_is_indeterminate() {
+        let mut progress = HealProgress::new();
+        progress.update_object_progress(1, 1, 0, 0, 128);
+        assert_eq!(progress.progress_state, HealProgressState::Indeterminate);
+        assert_eq!(progress.progress_percentage, 0.0);
+        assert!(progress.estimated_completion_time.is_none());
+    }
+
+    #[test]
+    fn progress_retry_is_exactly_once() {
+        let mut progress = HealProgress::new();
+        progress.set_total_baseline(1, 128);
+        progress.update_object_progress(1, 1, 0, 0, 128);
+        progress.update_object_progress(1, 1, 0, 0, 128);
+        assert_eq!(progress.objects_scanned, 1);
+        assert_eq!(progress.objects_healed, 1);
+        assert_eq!(progress.bytes_processed, 128);
+    }
+
+    #[test]
+    fn progress_never_triggers_cleanup_before_terminal_ledger_empty() {
+        let mut progress = HealProgress::new();
+        progress.progress_percentage = 100.0;
+        assert!(!progress.is_completed());
+        progress.mark_completed();
+        assert!(progress.is_completed());
+    }
+
+    #[test]
+    fn progress_counter_overflow_is_marked_unknown_without_aborting_completed_heal() {
+        let mut progress = HealProgress::new();
+        progress.update_object_progress(u64::MAX, u64::MAX, 1, 0, 0);
+        assert_eq!(progress.progress_state, HealProgressState::Unknown);
+        progress.mark_completed();
+        assert!(progress.is_completed());
+        assert_eq!(progress.progress_state, HealProgressState::Unknown);
+
+        let aggregate = aggregate_heal_progress([progress]).expect("progress should aggregate");
+        assert!(aggregate.ledger_complete);
+        assert!(aggregate.counter_unknown);
+        assert_eq!(aggregate.progress_state, HealProgressState::Unknown);
+        assert_eq!(aggregate.progress_percentage, 100.0);
+    }
+
+    #[test]
+    fn aggregate_rejects_mixed_baseline_generations() {
+        let progress = |generation| HealProgress {
+            kind: HealProgressKind::ObjectSweep,
+            objects_scanned: 5,
+            objects_total_count: 10,
+            progress_state: HealProgressState::Running,
+            baseline_generation: Some(generation),
+            baseline_known: true,
+            ..Default::default()
+        };
+
+        let aggregate = aggregate_heal_progress([progress(1), progress(2)]).expect("progress should aggregate");
+        assert!(!aggregate.baseline_known);
+        assert_eq!(aggregate.baseline_generation, None);
+        assert_eq!(aggregate.progress_state, HealProgressState::Indeterminate);
+        assert_eq!(aggregate.progress_percentage, 0.0);
+    }
+
+    #[test]
+    fn aggregate_accepts_multiple_sets_from_one_snapshot_generation() {
+        let progress = |objects_scanned| HealProgress {
+            kind: HealProgressKind::ObjectSweep,
+            objects_scanned,
+            objects_total_count: 10,
+            progress_state: HealProgressState::Running,
+            baseline_generation: Some(7),
+            baseline_known: true,
+            ..Default::default()
+        };
+
+        let aggregate = aggregate_heal_progress([progress(5), progress(3)]).expect("progress should aggregate");
+        assert!(aggregate.baseline_known);
+        assert_eq!(aggregate.baseline_generation, Some(7));
+    }
+
+    #[test]
+    fn stage_updates_do_not_double_count_object_outcomes() {
+        let mut progress = HealProgress::new();
+        progress.update_object_progress(2, 1, 0, 1, 256);
+        progress.update_stage(3, 4);
+        assert_eq!(progress.kind, HealProgressKind::ObjectSweep);
+        assert_eq!(progress.objects_scanned, 2);
+        assert_eq!(progress.objects_healed, 1);
+        assert_eq!(progress.skipped_objects, 1);
+    }
+
     #[test]
     fn test_heal_statistics_new() {
         let stats = HealStatistics::new();

crates/heal/src/heal/resume.rs

@@ -31,7 +31,7 @@ mod checkpoint;
 mod replacement;
 mod utils;
 
-pub use checkpoint::{CheckpointManager, ResumeCheckpoint};
+pub use checkpoint::{CheckpointManager, CheckpointObjectOutcome, CheckpointObjectOutcomeRecord, ResumeCheckpoint};
 pub(crate) use replacement::replacement_target_identities_match;
 use replacement::replacement_targets_match_identities;
 pub use replacement::{
@@ -340,6 +340,12 @@ pub struct ResumeState {
     pub failed_objects: u64,
     /// skipped objects
     pub skipped_objects: u64,
+    /// Terminal versions skipped because they were newer than the heal start.
+    #[serde(default)]
+    pub skipped_new_versions: u64,
+    /// Terminal versions handed to lifecycle expiry.
+    #[serde(default)]
+    pub skipped_ilm_expired: u64,
     /// current bucket
     pub current_bucket: Option<String>,
     /// current object
@@ -354,6 +360,24 @@ pub struct ResumeState {
     pub retry_count: u32,
     /// max retries
     pub max_retries: u32,
+    /// Bytes accounted by the object ledger; additive for old snapshots.
+    #[serde(default)]
+    pub processed_bytes: u64,
+    /// Total bytes from a complete usage snapshot, when available.
+    #[serde(default)]
+    pub total_bytes: u64,
+    /// Generation of the usage snapshot used for the baseline.
+    #[serde(default)]
+    pub baseline_generation: Option<u64>,
+    /// Whether the usage baseline is known. Missing in old snapshots means
+    /// indeterminate rather than a measured zero baseline.
+    #[serde(default)]
+    pub baseline_known: bool,
+    /// Persistent telemetry fence for counter/byte overflow or corruption.
+    /// It must survive a restart so a saturated snapshot is never presented as
+    /// a measured percentage on the next resume.
+    #[serde(default)]
+    pub counter_unknown: bool,
 }
 
 impl ResumeState {
@@ -377,6 +401,8 @@ impl ResumeState {
             successful_objects: 0,
             failed_objects: 0,
             skipped_objects: 0,
+            skipped_new_versions: 0,
+            skipped_ilm_expired: 0,
             current_bucket: None,
             current_object: None,
             completed_buckets: Vec::new(),
@@ -384,6 +410,11 @@ impl ResumeState {
             error_message: None,
             retry_count: 0,
             max_retries: 3,
+            processed_bytes: 0,
+            total_bytes: 0,
+            baseline_generation: None,
+            baseline_known: false,
+            counter_unknown: false,
         }
     }
 
@@ -412,6 +443,39 @@ impl ResumeState {
         self.last_update = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
     }
 
+    pub fn update_progress_with_bytes(
+        &mut self,
+        processed: u64,
+        successful: u64,
+        failed: u64,
+        skipped: u64,
+        processed_bytes: u64,
+    ) {
+        self.update_progress(processed, successful, failed, skipped);
+        self.processed_bytes = processed_bytes;
+    }
+
+    pub fn set_skipped_version_counts(&mut self, new_versions: u64, ilm_expired: u64) {
+        self.skipped_new_versions = new_versions;
+        self.skipped_ilm_expired = ilm_expired;
+        self.last_update = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
+    }
+
+    pub fn set_progress_baseline(&mut self, total_objects: u64, total_bytes: u64, generation: Option<u64>) {
+        self.total_objects = total_objects;
+        self.total_bytes = total_bytes;
+        self.baseline_generation = generation;
+        // This method is called only after a complete usage snapshot has been
+        // validated.  A complete but empty snapshot is still a known baseline.
+        self.baseline_known = true;
+        self.last_update = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
+    }
+
+    pub fn mark_counter_unknown(&mut self) {
+        self.counter_unknown = true;
+        self.last_update = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
+    }
+
     pub fn set_current_item(&mut self, bucket: Option<String>, object: Option<String>) {
         self.current_bucket = bucket;
         self.current_object = object;
@@ -437,6 +501,7 @@ impl ResumeState {
         if let Some(pos) = self.pending_buckets.iter().position(|b| b == bucket) {
             self.pending_buckets.remove(pos);
         }
+        self.resume_cursor = None;
         self.last_update = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
     }
 
@@ -454,6 +519,10 @@ impl ResumeState {
         self.successful_objects = 0;
         self.failed_objects = 0;
         self.skipped_objects = 0;
+        self.skipped_new_versions = 0;
+        self.skipped_ilm_expired = 0;
+        self.processed_bytes = 0;
+        self.counter_unknown = false;
         self.completed = false;
         // A retry re-scans every bucket from the beginning, so the version
         // cursor must be cleared too — otherwise the retry would resume mid-scan.
@@ -476,14 +545,28 @@ impl ResumeState {
     }
 
     pub fn get_progress_percentage(&self) -> f64 {
+        if self.completed {
+            return 100.0;
+        }
+        if self.counter_unknown {
+            return 0.0;
+        }
+        if !self.baseline_known {
+            return 0.0;
+        }
+        if self.total_bytes > 0 {
+            return ((self.processed_bytes as f64 / self.total_bytes as f64) * 100.0).min(99.999);
+        }
         if self.total_objects == 0 {
             return 0.0;
         }
-        (self.processed_objects as f64 / self.total_objects as f64) * 100.0
+        ((self.processed_objects as f64 / self.total_objects as f64) * 100.0).min(99.999)
     }
 
     pub fn get_success_rate(&self) -> f64 {
-        let total = self.successful_objects + self.failed_objects;
+        let Some(total) = self.successful_objects.checked_add(self.failed_objects) else {
+            return 0.0;
+        };
         if total == 0 {
             return 0.0;
         }
@@ -754,6 +837,14 @@ impl ResumeManager {
             state.successful_objects = 0;
             state.failed_objects = 0;
             state.skipped_objects = 0;
+            state.skipped_new_versions = 0;
+            state.skipped_ilm_expired = 0;
+            state.processed_bytes = 0;
+            state.total_objects = 0;
+            state.total_bytes = 0;
+            state.baseline_generation = None;
+            state.baseline_known = false;
+            state.counter_unknown = false;
             state.completed = false;
             state.completed_buckets.clear();
             state.schema_version = CURRENT_RESUME_SCHEMA;
@@ -838,6 +929,41 @@ impl ResumeManager {
         self.save_state_throttled().await
     }
 
+    pub async fn update_progress_with_bytes(
+        &self,
+        processed: u64,
+        successful: u64,
+        failed: u64,
+        skipped: u64,
+        processed_bytes: u64,
+    ) -> Result<()> {
+        let mut state = self.state.write().await;
+        state.update_progress_with_bytes(processed, successful, failed, skipped, processed_bytes);
+        drop(state);
+        self.save_state_throttled().await
+    }
+
+    pub async fn set_progress_baseline(&self, total_objects: u64, total_bytes: u64, generation: Option<u64>) -> Result<()> {
+        let mut state = self.state.write().await;
+        state.set_progress_baseline(total_objects, total_bytes, generation);
+        drop(state);
+        self.save_state_throttled().await
+    }
+
+    pub async fn mark_counter_unknown(&self) -> Result<()> {
+        let mut state = self.state.write().await;
+        state.mark_counter_unknown();
+        drop(state);
+        self.save_state().await
+    }
+
+    pub async fn set_skipped_version_counts(&self, new_versions: u64, ilm_expired: u64) -> Result<()> {
+        let mut state = self.state.write().await;
+        state.set_skipped_version_counts(new_versions, ilm_expired);
+        drop(state);
+        self.save_state_throttled().await
+    }
+
     /// Set current item. Called once per healed object, so persistence is
     /// throttled: the in-memory state always updates, but the snapshot is only
     /// written every `PERSIST_EVERY_MUTATIONS` calls or `PERSIST_INTERVAL`.
@@ -882,7 +1008,7 @@ impl ResumeManager {
         let mut state = self.state.write().await;
         state.complete_bucket(bucket);
         drop(state);
-        self.save_state_throttled().await
+        self.save_state().await
     }
 
     /// mark task completed

crates/heal/src/heal/resume/checkpoint.rs

@@ -29,10 +29,30 @@ use super::{
 
 const EVENT_HEAL_CHECKPOINT_STATE: &str = "heal_checkpoint_state";
 
-/// Current on-disk schema version for `ResumeCheckpoint`. Same rationale as
-/// `CURRENT_RESUME_SCHEMA`: pre-per-version dedup identities are not comparable
-/// to the new `compose_key` identities, so a stale checkpoint is discarded.
-pub(super) const CURRENT_CHECKPOINT_SCHEMA: u32 = 5;
+/// Current on-disk schema version for `ResumeCheckpoint`. Schema 5 could
+/// persist dedup identities without the aggregate counters needed to restore
+/// them safely, so stale checkpoints are discarded and replayed.
+pub(super) const CURRENT_CHECKPOINT_SCHEMA: u32 = 6;
+
+#[derive(Debug, Clone, Copy)]
+pub enum CheckpointObjectOutcome {
+    Processed,
+    Failed,
+    Skipped,
+}
+
+#[derive(Debug)]
+pub struct CheckpointObjectOutcomeRecord {
+    pub object: String,
+    pub outcome: CheckpointObjectOutcome,
+    pub successful: u64,
+    pub failed: u64,
+    pub skipped: u64,
+    pub bytes: u64,
+    pub skipped_new_versions: u64,
+    pub skipped_ilm_expired: u64,
+    pub counter_unknown: bool,
+}
 
 /// resume checkpoint
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -57,6 +77,30 @@ pub struct ResumeCheckpoint {
     pub failed_objects: HashSet<String>,
     /// skipped objects
     pub skipped_objects: HashSet<String>,
+    /// Aggregate object ledger counters restored alongside the dedup sets.
+    #[serde(default)]
+    pub successful_objects: u64,
+    #[serde(default)]
+    pub failed_object_count: u64,
+    #[serde(default)]
+    pub skipped_object_count: u64,
+    #[serde(default)]
+    pub skipped_new_versions: u64,
+    #[serde(default)]
+    pub skipped_ilm_expired: u64,
+    #[serde(default)]
+    pub processed_bytes: u64,
+    #[serde(default)]
+    pub total_objects: u64,
+    #[serde(default)]
+    pub total_bytes: u64,
+    #[serde(default)]
+    pub baseline_generation: Option<u64>,
+    #[serde(default)]
+    pub baseline_known: bool,
+    /// Persistent telemetry fence for counter/byte overflow or corruption.
+    #[serde(default)]
+    pub counter_unknown: bool,
 }
 
 impl ResumeCheckpoint {
@@ -70,6 +114,17 @@ impl ResumeCheckpoint {
             processed_objects: HashSet::new(),
             failed_objects: HashSet::new(),
             skipped_objects: HashSet::new(),
+            successful_objects: 0,
+            failed_object_count: 0,
+            skipped_object_count: 0,
+            skipped_new_versions: 0,
+            skipped_ilm_expired: 0,
+            processed_bytes: 0,
+            total_objects: 0,
+            total_bytes: 0,
+            baseline_generation: None,
+            baseline_known: false,
+            counter_unknown: false,
         }
     }
 
@@ -91,6 +146,34 @@ impl ResumeCheckpoint {
         self.skipped_objects.insert(object);
     }
 
+    pub fn update_progress(&mut self, successful: u64, failed: u64, skipped: u64, bytes: u64) {
+        self.successful_objects = successful;
+        self.failed_object_count = failed;
+        self.skipped_object_count = skipped;
+        self.processed_bytes = bytes;
+    }
+
+    pub fn set_progress_baseline(&mut self, total_objects: u64, total_bytes: u64, generation: Option<u64>) {
+        self.total_objects = total_objects;
+        self.total_bytes = total_bytes;
+        self.baseline_generation = generation;
+        // The caller has already validated that this is a complete snapshot;
+        // preserve the distinction between a known empty scope and an old
+        // checkpoint that omitted all baseline fields.
+        self.baseline_known = true;
+    }
+
+    pub fn mark_counter_unknown(&mut self) {
+        self.counter_unknown = true;
+        self.checkpoint_time = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
+    }
+
+    pub fn set_skipped_version_counts(&mut self, new_versions: u64, ilm_expired: u64) {
+        self.skipped_new_versions = new_versions;
+        self.skipped_ilm_expired = ilm_expired;
+        self.checkpoint_time = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().as_secs();
+    }
+
     /// Advance past a fully-processed page: objects below `object_index` are
     /// skipped by position on resume, so the per-object sets no longer need
     /// their entries and would otherwise grow with the whole bucket.
@@ -107,6 +190,17 @@ impl ResumeCheckpoint {
         self.update_position(0, 0);
         self.processed_objects.clear();
         self.skipped_objects.clear();
+        self.successful_objects = 0;
+        self.failed_object_count = 0;
+        self.skipped_object_count = 0;
+        self.skipped_new_versions = 0;
+        self.skipped_ilm_expired = 0;
+        self.processed_bytes = 0;
+        self.total_objects = 0;
+        self.total_bytes = 0;
+        self.baseline_generation = None;
+        self.baseline_known = false;
+        self.counter_unknown = false;
         self.failed_objects.clear();
     }
 }
@@ -158,10 +252,9 @@ impl CheckpointManager {
             });
         }
 
-        // A checkpoint from an older schema stored latest-only dedup identities
-        // that are not comparable to the new per-version `compose_key`
-        // identities. Discard the stale sets and position, then stamp the
-        // current schema so the scan restarts cleanly.
+        // Older checkpoints can contain identities that are not comparable to
+        // the current keys or lack their corresponding aggregate counters.
+        // Discard the stale sets and position so the scan restarts cleanly.
         if checkpoint.schema_version > CURRENT_CHECKPOINT_SCHEMA {
             return Err(Error::TaskExecutionFailed {
                 message: format!(
@@ -185,6 +278,17 @@ impl CheckpointManager {
             checkpoint.processed_objects.clear();
             checkpoint.failed_objects.clear();
             checkpoint.skipped_objects.clear();
+            checkpoint.successful_objects = 0;
+            checkpoint.failed_object_count = 0;
+            checkpoint.skipped_object_count = 0;
+            checkpoint.skipped_new_versions = 0;
+            checkpoint.skipped_ilm_expired = 0;
+            checkpoint.processed_bytes = 0;
+            checkpoint.total_objects = 0;
+            checkpoint.total_bytes = 0;
+            checkpoint.baseline_generation = None;
+            checkpoint.baseline_known = false;
+            checkpoint.counter_unknown = false;
             checkpoint.current_bucket_index = 0;
             checkpoint.current_object_index = 0;
             checkpoint.schema_version = CURRENT_CHECKPOINT_SCHEMA;
@@ -225,7 +329,7 @@ impl CheckpointManager {
         self.save_checkpoint_throttled().await
     }
 
-    /// Advance past a completed page and prune the per-object sets, then persist.
+    /// Persist a completed page position while retaining its identities.
     pub async fn complete_page(&self, bucket_index: usize, object_index: usize) -> Result<()> {
         let mut checkpoint = self.checkpoint.write().await;
         checkpoint.complete_page(bucket_index, object_index);
@@ -233,6 +337,35 @@ impl CheckpointManager {
         self.save_checkpoint_throttled().await
     }
 
+    /// Persist the page position while retaining identities until the resume
+    /// cursor is durable.
+    pub async fn advance_page(&self, bucket_index: usize, object_index: usize) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.update_position(bucket_index, object_index);
+        drop(checkpoint);
+        self.save_checkpoint().await
+    }
+
+    /// Remove the previous page's dedup identities only after its resume cursor
+    /// has been durably exposed.
+    pub async fn prune_completed_page(&self) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.processed_objects.clear();
+        checkpoint.skipped_objects.clear();
+        checkpoint.failed_objects.clear();
+        drop(checkpoint);
+        self.save_checkpoint().await
+    }
+
+    /// Advance to the next bucket and clear the final page identities after the
+    /// resume state has durably recorded the completed bucket.
+    pub async fn complete_bucket(&self, next_bucket_index: usize) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.complete_page(next_bucket_index, 0);
+        drop(checkpoint);
+        self.save_checkpoint().await
+    }
+
     /// Reset the checkpoint to the start of the scan for a retry, then persist.
     pub async fn reset_for_retry(&self) -> Result<()> {
         let mut checkpoint = self.checkpoint.write().await;
@@ -267,6 +400,62 @@ impl CheckpointManager {
         self.save_checkpoint_if_due().await
     }
 
+    /// Atomically persist an object's dedup identity with its aggregate result.
+    pub async fn record_object_outcome(&self, record: CheckpointObjectOutcomeRecord) -> Result<()> {
+        let CheckpointObjectOutcomeRecord {
+            object,
+            outcome,
+            successful,
+            failed,
+            skipped,
+            bytes,
+            skipped_new_versions,
+            skipped_ilm_expired,
+            counter_unknown,
+        } = record;
+        let mut checkpoint = self.checkpoint.write().await;
+        match outcome {
+            CheckpointObjectOutcome::Processed => checkpoint.add_processed_object(object),
+            CheckpointObjectOutcome::Failed => checkpoint.add_failed_object(object),
+            CheckpointObjectOutcome::Skipped => checkpoint.add_skipped_object(object),
+        }
+        checkpoint.update_progress(successful, failed, skipped, bytes);
+        checkpoint.set_skipped_version_counts(skipped_new_versions, skipped_ilm_expired);
+        if counter_unknown {
+            checkpoint.mark_counter_unknown();
+        }
+        drop(checkpoint);
+        self.save_checkpoint_if_due().await
+    }
+
+    pub async fn update_progress(&self, successful: u64, failed: u64, skipped: u64, bytes: u64) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.update_progress(successful, failed, skipped, bytes);
+        drop(checkpoint);
+        self.save_checkpoint_if_due().await
+    }
+
+    pub async fn set_progress_baseline(&self, total_objects: u64, total_bytes: u64, generation: Option<u64>) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.set_progress_baseline(total_objects, total_bytes, generation);
+        drop(checkpoint);
+        self.save_checkpoint_throttled().await
+    }
+
+    pub async fn mark_counter_unknown(&self) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.mark_counter_unknown();
+        drop(checkpoint);
+        self.save_checkpoint().await
+    }
+
+    pub async fn set_skipped_version_counts(&self, new_versions: u64, ilm_expired: u64) -> Result<()> {
+        let mut checkpoint = self.checkpoint.write().await;
+        checkpoint.set_skipped_version_counts(new_versions, ilm_expired);
+        drop(checkpoint);
+        self.save_checkpoint_throttled().await
+    }
+
     async fn save_checkpoint_if_due(&self) -> Result<()> {
         let should_save = self.throttle.lock().map(|mut throttle| throttle.record()).unwrap_or(true);
         if !should_save {

crates/heal/src/heal/resume/tests.rs

@@ -1296,6 +1296,7 @@ async fn test_resume_state_progress() {
     assert_eq!(progress, 0.0); // total_objects is 0
 
     state.total_objects = 100;
+    state.baseline_known = true;
     let progress = state.get_progress_percentage();
     assert_eq!(progress, 10.0);
 }
@@ -1475,6 +1476,40 @@ fn test_checkpoint_object_sets_dedupe_and_prune() {
     assert!(checkpoint.failed_objects.is_empty());
 }
 
+#[tokio::test]
+async fn checkpoint_page_commit_keeps_ledger_until_cursor_is_durable() {
+    let (_temp_dir, disk) = schema_test_disk().await;
+    let task_id = ResumeUtils::generate_task_id();
+    let checkpoint = CheckpointManager::new(disk.clone(), task_id.clone()).await.unwrap();
+
+    checkpoint
+        .record_object_outcome(CheckpointObjectOutcomeRecord {
+            object: "bucket/object:v1".to_string(),
+            outcome: CheckpointObjectOutcome::Processed,
+            successful: 1,
+            failed: 0,
+            skipped: 0,
+            bytes: 128,
+            skipped_new_versions: 0,
+            skipped_ilm_expired: 0,
+            counter_unknown: false,
+        })
+        .await
+        .unwrap();
+    checkpoint.advance_page(0, 1).await.unwrap();
+
+    let reloaded = CheckpointManager::load_from_disk(disk.clone(), &task_id).await.unwrap();
+    let snapshot = reloaded.get_checkpoint().await;
+    assert_eq!(snapshot.current_object_index, 1);
+    assert_eq!(snapshot.successful_objects, 1);
+    assert_eq!(snapshot.processed_bytes, 128);
+    assert!(snapshot.processed_objects.contains("bucket/object:v1"));
+
+    checkpoint.prune_completed_page().await.unwrap();
+    let reloaded = CheckpointManager::load_from_disk(disk, &task_id).await.unwrap();
+    assert!(reloaded.get_checkpoint().await.processed_objects.is_empty());
+}
+
 #[test]
 fn test_checkpoint_loads_legacy_vec_format() {
     // Checkpoints written before the HashSet migration stored the object
@@ -1568,14 +1603,14 @@ async fn test_resumestate_schema_v0_discarded_on_load() {
 }
 
 #[tokio::test]
-async fn test_checkpoint_schema_v4_discarded_on_load() {
+async fn test_checkpoint_schema_v5_discarded_on_load() {
     let (temp_dir, disk) = schema_test_disk().await;
 
-    // The previous checkpoint schema is unsafe once its paired resume
-    // state is discarded: retaining either position would skip work.
+    // Schema v5 can persist failed identities without the aggregate counters
+    // that make those identities safe to deduplicate after an upgrade.
     let task_id = "00000000-0000-4000-8000-000000000002";
     let legacy = r#"{
-            "schema_version": 4,
+            "schema_version": 5,
             "task_id": "00000000-0000-4000-8000-000000000002",
             "checkpoint_time": 1700000000,
             "current_bucket_index": 2,
@@ -1639,6 +1674,120 @@ async fn current_normal_resume_schema_preserves_progress() {
     temp_dir.close().expect("remove schema test directory");
 }
 
+#[test]
+fn progress_checkpoint_restores_bytes_and_generation() {
+    let mut checkpoint = ResumeCheckpoint::new("progress-checkpoint".to_string());
+    checkpoint.set_progress_baseline(9, 4096, Some(77));
+    checkpoint.update_progress(4, 1, 2, 2048);
+    checkpoint.set_skipped_version_counts(3, 1);
+    checkpoint.mark_counter_unknown();
+
+    let restored: ResumeCheckpoint =
+        serde_json::from_slice(&serde_json::to_vec(&checkpoint).expect("serialize checkpoint")).expect("deserialize checkpoint");
+    assert_eq!(restored.processed_bytes, 2048);
+    assert_eq!(restored.total_objects, 9);
+    assert_eq!(restored.total_bytes, 4096);
+    assert_eq!(restored.baseline_generation, Some(77));
+    assert!(restored.baseline_known);
+    assert_eq!(restored.skipped_new_versions, 3);
+    assert_eq!(restored.skipped_ilm_expired, 1);
+    assert!(restored.counter_unknown);
+}
+
+#[test]
+fn old_progress_schema_migrates_missing_fields_to_unknown() {
+    let state = ResumeState::new(
+        "legacy-progress".to_string(),
+        "erasure_set".to_string(),
+        "pool_0_set_0".to_string(),
+        Vec::new(),
+    );
+    let mut value = serde_json::to_value(state).expect("serialize legacy-compatible state");
+    let object = value.as_object_mut().expect("state must be an object");
+    for field in [
+        "processed_bytes",
+        "total_bytes",
+        "baseline_generation",
+        "baseline_known",
+        "skipped_new_versions",
+        "skipped_ilm_expired",
+    ] {
+        object.remove(field);
+    }
+    object.insert("total_objects".to_string(), serde_json::json!(10));
+    object.insert("processed_objects".to_string(), serde_json::json!(5));
+    let restored: ResumeState = serde_json::from_value(value).expect("deserialize old progress state");
+    assert_eq!(restored.processed_bytes, 0);
+    assert_eq!(restored.total_bytes, 0);
+    assert_eq!(restored.baseline_generation, None);
+    assert!(!restored.baseline_known, "missing baseline must remain unknown");
+    assert_eq!(restored.get_progress_percentage(), 0.0);
+    assert_eq!(restored.skipped_new_versions, 0);
+    assert_eq!(restored.skipped_ilm_expired, 0);
+}
+
+#[test]
+fn progress_counter_unknown_survives_resume_round_trip() {
+    let mut state = ResumeState::new(
+        "overflow-progress".to_string(),
+        "erasure_set".to_string(),
+        "pool_0_set_0".to_string(),
+        Vec::new(),
+    );
+    state.mark_counter_unknown();
+
+    let restored: ResumeState =
+        serde_json::from_slice(&serde_json::to_vec(&state).expect("serialize resume state")).expect("deserialize resume state");
+    assert!(restored.counter_unknown);
+}
+
+#[tokio::test]
+async fn checkpoint_progress_survives_a_torn_resume_summary_write() {
+    let (_temp_dir, disk) = schema_test_disk().await;
+    let task_id = ResumeUtils::generate_task_id();
+    let _resume = ResumeManager::new(
+        disk.clone(),
+        task_id.clone(),
+        "erasure_set".to_string(),
+        "pool_0_set_0".to_string(),
+        vec!["bucket".to_string()],
+    )
+    .await
+    .expect("resume state should persist");
+    let checkpoint = CheckpointManager::new(disk.clone(), task_id.clone())
+        .await
+        .expect("checkpoint should persist");
+
+    // This is the ordering used by the erasure-set loop: the checkpoint is
+    // durable before the summary write.  Stop here to model a crash in the
+    // inter-store window and verify that the recovery authority retains the
+    // telemetry fence and bytes.
+    checkpoint
+        .update_progress(3, 0, 0, 1024)
+        .await
+        .expect("checkpoint progress should persist");
+    checkpoint.mark_counter_unknown().await.expect("unknown fence should persist");
+    checkpoint
+        .update_position(0, 3)
+        .await
+        .expect("checkpoint position should persist");
+
+    let restored_checkpoint = CheckpointManager::load_from_disk(disk.clone(), &task_id)
+        .await
+        .expect("checkpoint should reload")
+        .get_checkpoint()
+        .await;
+    let restored_resume = ResumeManager::load_from_disk(disk, &task_id)
+        .await
+        .expect("resume summary should reload")
+        .get_state()
+        .await;
+    assert!(restored_checkpoint.counter_unknown);
+    assert_eq!(restored_checkpoint.processed_bytes, 1024);
+    assert_eq!(restored_checkpoint.current_object_index, 3);
+    assert!(!restored_resume.counter_unknown, "summary is intentionally the torn/older store");
+}
+
 #[tokio::test]
 async fn future_resume_and_checkpoint_schemas_are_rejected() {
     let (temp_dir, disk) = schema_test_disk().await;

crates/heal/src/heal/storage.rs

@@ -22,6 +22,7 @@ use serde::{Deserialize, Serialize};
 use std::sync::Arc;
 use tracing::{debug, error, warn};
 
+use super::progress::stable_generation;
 use super::storage_api::owner::{EcstoreHealLifecycleExpiryContext, ecstore_load_admin_data_usage_from_backend_cached};
 use super::storage_api::storage::{
     BucketInfo, BucketOperations, DiskSetSelector, HealOperations as _, ListOperations as _, ObjectIO as _,
@@ -34,6 +35,9 @@ pub use super::{HealObjectInfo, HealObjectOptions, HealPutObjReader};
 pub struct HealBucketUsageBaseline {
     pub objects_count: u64,
     pub bytes: u64,
+    /// Stable identity of the validated usage snapshot and selected scope.
+    /// `None` is retained for test/legacy providers that cannot expose one.
+    pub generation: Option<u64>,
 }
 
 pub struct HealLifecycleExpiryContext {
@@ -785,11 +789,52 @@ impl HealStorageAPI for ECStoreHealStorage {
         let mut baseline = HealBucketUsageBaseline::default();
         for bucket in buckets {
             if let Some(usage) = info.buckets_usage.get(bucket) {
-                baseline.objects_count = baseline.objects_count.saturating_add(usage.objects_count);
-                baseline.bytes = baseline.bytes.saturating_add(usage.size);
+                baseline.objects_count = match baseline.objects_count.checked_add(usage.objects_count) {
+                    Some(total) => total,
+                    // A corrupt/overflowing usage snapshot is not a usable
+                    // denominator.  Leave progress indeterminate instead of
+                    // turning saturation into a plausible percentage.
+                    None => return Ok(None),
+                };
+                baseline.bytes = match baseline.bytes.checked_add(usage.size) {
+                    Some(total) => total,
+                    None => return Ok(None),
+                };
             }
         }
 
+        let identity = info.snapshot_identity();
+        let mut canonical = Vec::new();
+        match identity.last_update {
+            Some(last_update) => {
+                canonical.push(1);
+                canonical.extend_from_slice(
+                    &last_update
+                        .duration_since(std::time::UNIX_EPOCH)
+                        .unwrap_or_default()
+                        .as_nanos()
+                        .to_be_bytes(),
+                );
+            }
+            None => canonical.push(0),
+        }
+        for value in [identity.scanner_cycle, identity.scanner_epoch] {
+            match value {
+                Some(value) => {
+                    canonical.push(1);
+                    canonical.extend_from_slice(&value.to_be_bytes());
+                }
+                None => canonical.push(0),
+            }
+        }
+        let mut scope = buckets.to_vec();
+        scope.sort_unstable();
+        for bucket in scope {
+            canonical.extend_from_slice(&(bucket.len() as u64).to_be_bytes());
+            canonical.extend_from_slice(bucket.as_bytes());
+        }
+        baseline.generation = Some(stable_generation(&[&canonical]));
+
         Ok(Some(baseline))
     }
 

crates/heal/src/heal/task.rs

@@ -649,7 +649,7 @@ impl HealTask {
 
         let mut progress = self.progress.write().await;
         progress.set_current_object(Some(format!("skipped: {bucket}/{object}")));
-        progress.update_progress(0, 1, 0, 0);
+        progress.update_stage(1, 1);
         Ok(())
     }
 
@@ -733,7 +733,7 @@ impl HealTask {
             "Heal object skipped for data usage cache after transient error"
         );
         let mut progress = self.progress.write().await;
-        progress.update_progress(3, 3, 0, 0);
+        progress.update_stage(3, 3);
         true
     }
 
@@ -757,7 +757,7 @@ impl HealTask {
         );
         let mut progress = self.progress.write().await;
         progress.set_current_object(Some(format!("skipped: {bucket}/{object}")));
-        progress.update_progress(4, 4, 0, 0);
+        progress.update_stage(4, 4);
         true
     }
 
@@ -831,6 +831,10 @@ impl HealTask {
 
         match &result {
             Ok(_) => {
+                // A stage can reach its final step before the durable resume
+                // ledger and cleanup fences commit. Publish terminal 100 only
+                // after the enclosing operation has returned success.
+                self.progress.write().await.mark_completed();
                 let mut status = self.status.write().await;
                 *status = HealTaskStatus::Completed;
                 demote_to_debug_when!(self.heal_type.is_per_object(), info, target: "rustfs::heal::task", {

crates/heal/src/heal/task/heal_bucket.rs

@@ -13,6 +13,7 @@
 // limitations under the License.
 /// bucket/cluster/prefix heal: the recursive bucket-objects sweep and the erasure-set usage baseline
 use super::*;
+use crate::heal::progress::{add_bytes, increment_counter, stable_generation};
 
 impl HealTask {
     pub(super) async fn heal_bucket(&self, bucket: &str) -> Result<()> {
@@ -32,7 +33,7 @@ impl HealTask {
         {
             let mut progress = self.progress.write().await;
             progress.set_current_object(Some(format!("bucket: {bucket}")));
-            progress.update_progress(0, 3, 0, 0);
+            progress.update_stage(0, 3);
         }
 
         // Step 1: Check if bucket exists
@@ -66,7 +67,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(1, 3, 0, 0);
+            progress.update_stage(1, 3);
         }
 
         // Step 2: Perform bucket heal using ecstore
@@ -122,7 +123,7 @@ impl HealTask {
 
                 if !self.options.recursive {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
                 Ok(())
             }
@@ -142,7 +143,7 @@ impl HealTask {
                 );
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
                 Err(Error::TaskExecutionFailed {
                     message: format!("Failed to heal bucket {bucket}: {e}"),
@@ -245,6 +246,7 @@ impl HealTask {
         let mut scanned = 0u64;
         let mut healed = 0u64;
         let mut failed = 0u64;
+        let mut skipped = 0u64;
         let mut retryable_failed = 0u64;
         let mut permanent_failed = 0u64;
         let mut bytes = 0u64;
@@ -286,16 +288,14 @@ impl HealTask {
                 let mut retry = Vec::with_capacity(pending.len());
                 for item in pending {
                     self.check_control_flags().await?;
+                    let mut telemetry_unknown = false;
                     let object = item.name.as_str();
-                    if retry_attempt == 0 {
-                        scanned = scanned.saturating_add(1);
-                    }
                     {
                         let mut progress = self.progress.write().await;
                         progress.set_current_object(Some(format!("{bucket}/{object}")));
-                        progress.update_progress(scanned, healed, failed, bytes);
                     }
 
+                    let mut terminal_outcome = true;
                     let error = match self
                         .await_with_control(
                             self.storage
@@ -304,13 +304,13 @@ impl HealTask {
                         .await
                     {
                         Ok((result, None)) => {
-                            healed = healed.saturating_add(1);
-                            bytes = bytes.saturating_add(u64::try_from(result.object_size).unwrap_or_default());
+                            telemetry_unknown |= !increment_counter(&mut healed);
+                            telemetry_unknown |= !add_bytes(&mut bytes, u64::try_from(result.object_size).unwrap_or(u64::MAX));
                             self.record_result_item(result).await;
                             None
                         }
                         Ok((_, Some(err))) if is_missing_object_dir_heal_result(object, &err) => {
-                            healed = healed.saturating_add(1);
+                            telemetry_unknown |= !increment_counter(&mut healed);
                             debug!(
                                 target: "rustfs::heal::task",
                                 event = EVENT_HEAL_BUCKET_RESULT,
@@ -329,6 +329,7 @@ impl HealTask {
 
                     if let Some(err) = error {
                         if Self::should_skip_data_usage_cache_heal_error(bucket, object, &err) {
+                            telemetry_unknown |= !increment_counter(&mut skipped);
                             warn!(
                                 target: "rustfs::heal::task",
                                 event = EVENT_HEAL_BUCKET_RESULT,
@@ -342,6 +343,7 @@ impl HealTask {
                                 "Heal bucket object repair skipped due to transient metadata error"
                             );
                         } else if err.is_recoverable_heal() && retry_attempt < MAX_BUCKET_OBJECT_HEAL_RETRIES {
+                            terminal_outcome = false;
                             debug!(
                                 target: "rustfs::heal::task",
                                 event = EVENT_HEAL_BUCKET_RESULT,
@@ -357,7 +359,7 @@ impl HealTask {
                             );
                             retry.push(item);
                         } else {
-                            failed = failed.saturating_add(1);
+                            telemetry_unknown |= !increment_counter(&mut failed);
                             if err.is_recoverable_heal() {
                                 retryable_failed = retryable_failed.saturating_add(1);
                             } else {
@@ -383,8 +385,19 @@ impl HealTask {
                         }
                     }
 
+                    if terminal_outcome {
+                        telemetry_unknown |= !increment_counter(&mut scanned);
+                    }
+
+                    if !terminal_outcome {
+                        continue;
+                    }
+
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(scanned, healed, failed, bytes);
+                    progress.update_object_progress(scanned, healed, failed, skipped, bytes);
+                    if telemetry_unknown {
+                        progress.mark_unknown();
+                    }
                 }
                 pending = retry;
                 retry_attempt = retry_attempt.saturating_add(1);
@@ -431,7 +444,10 @@ impl HealTask {
         Ok(())
     }
 
-    pub(super) async fn apply_erasure_set_usage_baseline(&self, buckets: &[String]) -> Result<()> {
+    pub(super) async fn apply_erasure_set_usage_baseline(&self, buckets: &[String], _set_disk_id: &str) -> Result<()> {
+        if matches!(self.options.scan_mode, HealScanMode::Deep) || matches!(self.source, HealRequestSource::AutoHeal) {
+            return Ok(());
+        }
         let baseline = match self
             .await_with_control(self.storage.erasure_set_usage_baseline(buckets))
             .await
@@ -442,9 +458,18 @@ impl HealTask {
             Err(_) => return Ok(()),
         };
 
-        let HealBucketUsageBaseline { objects_count, bytes } = baseline;
+        let HealBucketUsageBaseline {
+            objects_count,
+            bytes,
+            generation,
+        } = baseline;
+        let generation = generation.map(|snapshot_generation| stable_generation(&[&snapshot_generation.to_be_bytes()]));
         let mut progress = self.progress.write().await;
-        progress.set_total_baseline(objects_count, bytes);
+        if let Some(generation) = generation {
+            progress.set_total_baseline_with_generation(objects_count, bytes, generation);
+        } else {
+            progress.set_total_baseline(objects_count, bytes);
+        }
         Ok(())
     }
 }

crates/heal/src/heal/task/heal_erasure_set.rs

@@ -32,7 +32,7 @@ impl HealTask {
         {
             let mut progress = self.progress.write().await;
             progress.set_current_object(Some(format!("erasure_set: {} ({} buckets)", set_disk_id, buckets.len())));
-            progress.update_progress(0, 4, 0, 0);
+            progress.update_stage(0, 4);
         }
 
         let is_auto_replacement = matches!(self.source, HealRequestSource::AutoHeal) && !self.heal_endpoints.is_empty();
@@ -158,7 +158,7 @@ impl HealTask {
             None
         };
 
-        self.apply_erasure_set_usage_baseline(&buckets).await?;
+        self.apply_erasure_set_usage_baseline(&buckets, &set_disk_id).await?;
 
         let healing_marker = format!("{set_disk_id}:{}", self.id);
         if let Some((disk, resume_manager, _)) = replacement_resume.as_ref() {
@@ -248,7 +248,7 @@ impl HealTask {
                         );
                         {
                             let mut progress = self.progress.write().await;
-                            progress.update_progress(4, 4, 0, 0);
+                            progress.update_stage(4, 4);
                         }
                         return Err(Error::TaskExecutionFailed {
                             message: format!("Failed to heal disk format for {set_disk_id}: {error}"),
@@ -304,7 +304,7 @@ impl HealTask {
                 );
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(4, 4, 0, 0);
+                    progress.update_stage(4, 4);
                 }
                 return Err(Error::TaskExecutionFailed {
                     message: format!("Failed to heal disk format for {set_disk_id}: {e}"),
@@ -314,7 +314,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(1, 4, 0, 0);
+            progress.update_stage(1, 4);
         }
 
         // The rebuilt disks are formatted now: mark them as healing so
@@ -343,7 +343,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(2, 4, 0, 0);
+            progress.update_stage(2, 4);
         }
 
         // Step 3: Heal bucket structure
@@ -427,7 +427,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(3, 4, 0, 0);
+            progress.update_stage(3, 4);
         }
 
         // Step 4: Execute erasure set heal with resume
@@ -470,9 +470,7 @@ impl HealTask {
         };
 
         {
-            let mut progress = self.progress.write().await;
-            let bytes_processed = progress.bytes_processed;
-            progress.update_progress(4, 4, 0, bytes_processed);
+            self.progress.write().await.update_stage(4, 4);
         }
 
         match result {

crates/heal/src/heal/task/heal_metadata.rs

@@ -32,7 +32,7 @@ impl HealTask {
         {
             let mut progress = self.progress.write().await;
             progress.set_current_object(Some(format!("metadata: {bucket}/{object}")));
-            progress.update_progress(0, 3, 0, 0);
+            progress.update_stage(0, 3);
         }
 
         // Step 1: Check if object exists
@@ -74,7 +74,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(1, 3, 0, 0);
+            progress.update_stage(1, 3);
         }
 
         // Step 2: Perform metadata heal using ecstore
@@ -122,7 +122,7 @@ impl HealTask {
                     );
                     {
                         let mut progress = self.progress.write().await;
-                        progress.update_progress(3, 3, 0, 0);
+                        progress.update_stage(3, 3);
                     }
                     return Err(Error::TaskExecutionFailed {
                         message: format!("Failed to heal metadata {bucket}/{object}: {e}"),
@@ -145,7 +145,7 @@ impl HealTask {
 
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
                 self.record_result_item(result).await;
                 Ok(())
@@ -167,7 +167,7 @@ impl HealTask {
                 );
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
                 Err(Error::TaskExecutionFailed {
                     message: format!("Failed to heal metadata {bucket}/{object}: {e}"),
@@ -194,7 +194,7 @@ impl HealTask {
         {
             let mut progress = self.progress.write().await;
             progress.set_current_object(Some(format!("ec_decode: {bucket}/{object}")));
-            progress.update_progress(0, 3, 0, 0);
+            progress.update_stage(0, 3);
         }
 
         // Step 1: Check if object exists
@@ -236,7 +236,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(1, 3, 0, 0);
+            progress.update_stage(1, 3);
         }
 
         // Step 2: Perform EC decode heal using ecstore
@@ -284,7 +284,7 @@ impl HealTask {
                     );
                     {
                         let mut progress = self.progress.write().await;
-                        progress.update_progress(3, 3, 0, 0);
+                        progress.update_stage(3, 3);
                     }
                     return Err(Error::TaskExecutionFailed {
                         message: format!("Failed to heal EC decode {bucket}/{object}: {e}"),
@@ -309,7 +309,7 @@ impl HealTask {
 
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, object_size);
+                    progress.update_object_progress(1, 1, 0, 0, object_size);
                 }
                 self.record_result_item(result).await;
                 Ok(())
@@ -331,7 +331,7 @@ impl HealTask {
                 );
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
                 Err(Error::TaskExecutionFailed {
                     message: format!("Failed to heal EC decode {bucket}/{object}: {e}"),

crates/heal/src/heal/task/heal_object.rs

@@ -36,7 +36,7 @@ impl HealTask {
         {
             let mut progress = self.progress.write().await;
             progress.set_current_object(Some(format!("{bucket}/{object}")));
-            progress.update_progress(0, 4, 0, 0);
+            progress.update_stage(0, 4);
         }
 
         // Step 1: Check if object exists and get metadata
@@ -132,7 +132,7 @@ impl HealTask {
 
         {
             let mut progress = self.progress.write().await;
-            progress.update_progress(1, 3, 0, 0);
+            progress.update_stage(1, 3);
         }
 
         // Step 2: directly call ecstore to perform heal
@@ -187,7 +187,7 @@ impl HealTask {
                         );
                         {
                             let mut progress = self.progress.write().await;
-                            progress.update_progress(3, 3, 0, 0);
+                            progress.update_stage(3, 3);
                         }
                         return Ok(());
                     }
@@ -207,7 +207,7 @@ impl HealTask {
 
                     {
                         let mut progress = self.progress.write().await;
-                        progress.update_progress(3, 3, 0, 0);
+                        progress.update_stage(3, 3);
                     }
 
                     if Self::should_return_typed_heal_error(&e) {
@@ -249,7 +249,7 @@ impl HealTask {
 
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, object_size);
+                    progress.update_object_progress(1, 1, 0, 0, object_size);
                 }
                 self.record_result_item(result).await;
                 Ok(())
@@ -275,7 +275,7 @@ impl HealTask {
                     );
                     {
                         let mut progress = self.progress.write().await;
-                        progress.update_progress(3, 3, 0, 0);
+                        progress.update_stage(3, 3);
                     }
                     return Ok(());
                 }
@@ -295,7 +295,7 @@ impl HealTask {
 
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(3, 3, 0, 0);
+                    progress.update_stage(3, 3);
                 }
 
                 if Self::should_return_typed_heal_error(&e) {
@@ -414,7 +414,7 @@ impl HealTask {
 
                 {
                     let mut progress = self.progress.write().await;
-                    progress.update_progress(4, 4, 0, object_size);
+                    progress.update_object_progress(1, 1, 0, 0, object_size);
                 }
                 self.record_result_item(result).await;
                 Ok(())

crates/heal/src/heal/task/tests.rs

@@ -22,6 +22,7 @@ use std::sync::Mutex;
 use tempfile::TempDir;
 
 use super::super::storage_api::status::BucketInfo;
+use crate::heal::progress::HealProgressState;
 
 #[tokio::test]
 async fn retry_request_carries_remaining_timeout_budget() {
@@ -2124,6 +2125,7 @@ async fn erasure_set_heal_applies_usage_baseline_to_progress() {
         usage_baseline: Mutex::new(Some(HealBucketUsageBaseline {
             objects_count: 10,
             bytes: 8,
+            generation: Some(1),
         })),
         ..Default::default()
     });
@@ -2147,10 +2149,55 @@ async fn erasure_set_heal_applies_usage_baseline_to_progress() {
     let progress = task.get_progress().await;
     assert_eq!(progress.objects_total_count, 10);
     assert_eq!(progress.objects_total_size, 8);
+    assert!(progress.baseline_generation.is_some());
+    assert!(progress.baseline_known);
     assert_eq!(progress.bytes_processed, 2);
     assert!((progress.progress_percentage - 25.0).abs() < 0.001);
 }
 
+#[tokio::test]
+async fn erasure_set_disk_walk_keeps_cluster_usage_baseline_indeterminate() {
+    for (scan_mode, source) in [
+        (HealScanMode::Deep, HealRequestSource::Admin),
+        (HealScanMode::Normal, HealRequestSource::AutoHeal),
+    ] {
+        let temp = TempDir::new().expect("temporary directory should be created");
+        let disk = make_resume_disk(&temp).await;
+        let storage = Arc::new(MockStorage {
+            resume_disk: Mutex::new(Some(disk)),
+            usage_baseline: Mutex::new(Some(HealBucketUsageBaseline {
+                objects_count: 10,
+                bytes: 8,
+                generation: Some(1),
+            })),
+            ..Default::default()
+        });
+        let mut request = HealRequest::new(
+            HealType::ErasureSet {
+                buckets: vec!["bucket-a".to_string()],
+                set_disk_id: "pool_0_set_0".to_string(),
+            },
+            HealOptions {
+                scan_mode,
+                timeout: None,
+                ..Default::default()
+            },
+            HealPriority::Normal,
+        );
+        request.source = source;
+        let task = HealTask::from_request(request, storage);
+
+        task.heal_erasure_set(vec!["bucket-a".to_string()], "pool_0_set_0".to_string())
+            .await
+            .expect("erasure set heal should complete");
+
+        let progress = task.get_progress().await;
+        assert!(!progress.baseline_known);
+        assert_eq!(progress.baseline_generation, None);
+        assert_eq!(progress.progress_state, HealProgressState::Indeterminate);
+    }
+}
+
 #[tokio::test]
 async fn erasure_set_heal_ignores_usage_baseline_errors() {
     let temp = TempDir::new().expect("temporary directory should be created");

crates/heal/src/lib.rs

@@ -19,7 +19,7 @@ pub use error::{Error, Result};
 pub use heal::{
     HealManager, HealOperationsSnapshot, HealOptions, HealPriority, HealPriorityCounts, HealRequest, HealSourceCounts, HealType,
     channel::HealChannelProcessor,
-    progress::HealProgress,
+    progress::{HealProgress, aggregate_heal_progress},
     resume::{ReplacementRecoveryRecord, ReplacementRecoveryState, ResumeUtils},
 };
 use rustfs_concurrency::WorkloadAdmissionSnapshotProvider;

crates/protos/src/generated/proto_gen/node_service.rs

@@ -1215,7 +1215,10 @@ pub struct ScannerActivityResponse {
     pub dirty_usage_pending: bool,
 }
 #[derive(Clone, Copy, PartialEq, Eq, Hash, ::prost::Message)]
-pub struct BackgroundHealStatusRequest {}
+pub struct BackgroundHealStatusRequest {
+    #[prost(uint32, tag = "1")]
+    pub protocol_version: u32,
+}
 #[derive(Clone, PartialEq, Eq, Hash, ::prost::Message)]
 pub struct BackgroundHealStatusResponse {
     #[prost(bool, tag = "1")]

crates/protos/src/lib.rs

@@ -170,6 +170,7 @@ pub fn internode_rpc_max_message_size() -> usize {
 pub const HEAL_CONTROL_RPC_MAX_MESSAGE_SIZE: usize = heal_control::RESULT_MAX_SIZE + 1024;
 pub const HEAL_CONTROL_PROTOCOL_VERSION: u32 = 3;
 pub const DYNAMIC_CONFIG_PROTOCOL_VERSION: u32 = 1;
+pub const BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION: u32 = 2;
 pub const HEAL_CONTROL_CAPABILITY_PROBE_PREFIX: &[u8] = b"rustfs-heal-control-capability-v3\0";
 pub const REMOTE_VERSION_STATE_CAPABILITY_PROBE_PREFIX: &[u8] = b"rustfs-tier-remote-version-state-capability-v1\0";
 pub const CROSS_POOL_FENCE_CAPABILITY_PROBE_PREFIX: &[u8] = b"rustfs-cross-pool-fence-capability-v1\0";
@@ -2346,10 +2347,28 @@ pub async fn evict_failed_connection_with_log_level(addr: &str, log_level: Conne
 #[cfg(test)]
 mod tests {
     use super::*;
+    use prost::Message as _;
     use std::sync::Mutex;
 
     static INTERNODE_RPC_MSGPACK_ONLY_ENV_LOCK: Mutex<()> = Mutex::new(());
 
+    #[derive(Clone, PartialEq, prost::Message)]
+    struct BackgroundHealStatusRequestV1 {}
+
+    #[test]
+    fn background_heal_status_request_remains_rolling_upgrade_compatible() {
+        let current = proto_gen::node_service::BackgroundHealStatusRequest {
+            protocol_version: BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION,
+        };
+        let encoded = current.encode_to_vec();
+        BackgroundHealStatusRequestV1::decode(encoded.as_slice()).expect("v1 server should ignore the version field");
+
+        let encoded = BackgroundHealStatusRequestV1 {}.encode_to_vec();
+        let decoded = proto_gen::node_service::BackgroundHealStatusRequest::decode(encoded.as_slice())
+            .expect("v2 server should accept a v1 request");
+        assert_eq!(decoded.protocol_version, 0);
+    }
+
     #[derive(Clone, Copy, Debug, Eq, Ord, PartialEq, PartialOrd)]
     struct CompatPayloadField {
         message: &'static str,

crates/protos/src/node.proto

@@ -846,7 +846,9 @@ message ScannerActivityResponse {
   bool dirty_usage_pending = 9;
 }
 
-message BackgroundHealStatusRequest {}
+message BackgroundHealStatusRequest {
+  uint32 protocol_version = 1;
+}
 
 message BackgroundHealStatusResponse {
   bool success = 1;

rustfs/src/admin/handlers/heal.rs

@@ -20,7 +20,7 @@ use crate::admin::storage_api::bucket::utils::is_valid_object_prefix;
 use crate::server::ADMIN_PREFIX;
 use crate::server::RemoteAddr;
 use crate::storage::rpc::node_service::heal::{
-    HealControlCoordinator, NodeHealProgress, NodeHealStatusSnapshot, capture_node_heal_status, decode_node_heal_status,
+    HealControlCoordinator, NodeHealStatusSnapshot, capture_node_heal_status, decode_node_heal_status,
     decode_node_replacement_recovery_status, heal_control_coordinator, heal_topology_fingerprint,
 };
 use bytes::Bytes;
@@ -298,14 +298,7 @@ fn background_heal_runtime_state(
     }
 }
 
-#[derive(Debug, Serialize)]
-#[serde(rename_all = "camelCase")]
-struct BackgroundHealProgress {
-    objects_scanned: u64,
-    objects_healed: u64,
-    objects_failed: u64,
-    bytes_processed: u64,
-}
+type BackgroundHealProgress = rustfs_heal::HealProgress;
 
 #[derive(Debug)]
 struct ClusterHealStatusSnapshot {
@@ -344,17 +337,10 @@ fn add_operations(total: &mut rustfs_heal::HealOperationsSnapshot, next: rustfs_
     add_source_counts(&mut total.retrying_by_source, next.retrying_by_source);
 }
 
-fn add_progress(total: &mut BackgroundHealProgress, next: NodeHealProgress) {
-    total.objects_scanned = total.objects_scanned.saturating_add(next.objects_scanned);
-    total.objects_healed = total.objects_healed.saturating_add(next.objects_healed);
-    total.objects_failed = total.objects_failed.saturating_add(next.objects_failed);
-    total.bytes_processed = total.bytes_processed.saturating_add(next.bytes_processed);
-}
-
 fn aggregate_cluster_heal_status(snapshots: Vec<NodeHealStatusSnapshot>) -> ClusterHealStatusSnapshot {
     let mut info = BackgroundHealInfo::default();
     let mut operations = rustfs_heal::HealOperationsSnapshot::default();
-    let mut progress = None;
+    let mut progress = Vec::new();
     let mut any_services_enabled = false;
     let mut any_initialized = false;
 
@@ -371,18 +357,12 @@ fn aggregate_cluster_heal_status(snapshots: Vec<NodeHealStatusSnapshot>) -> Clus
         }
         add_operations(&mut operations, snapshot.operations);
         if let Some(next) = snapshot.progress {
-            add_progress(
-                progress.get_or_insert(BackgroundHealProgress {
-                    objects_scanned: 0,
-                    objects_healed: 0,
-                    objects_failed: 0,
-                    bytes_processed: 0,
-                }),
-                next,
-            );
+            progress.push(next);
         }
     }
 
+    let progress = rustfs_heal::aggregate_heal_progress(progress);
+
     let state = if operations.queue_length > 0 || operations.active_tasks > 0 || operations.retrying_tasks > 0 {
         HealRuntimeState::Active
     } else if any_initialized {
@@ -2201,10 +2181,19 @@ mod tests {
         };
 
         let progress = BackgroundHealProgress {
+            kind: rustfs_heal::heal::progress::HealProgressKind::ObjectSweep,
             objects_scanned: 7,
             objects_healed: 3,
             objects_failed: 1,
+            skipped_objects: 3,
+            objects_total_count: 10,
+            objects_total_size: 8192,
             bytes_processed: 4096,
+            progress_percentage: 50.0,
+            progress_state: rustfs_heal::heal::progress::HealProgressState::Running,
+            baseline_generation: Some(42),
+            baseline_known: true,
+            ..Default::default()
         };
 
         let encoded = encode_background_heal_status(
@@ -2220,7 +2209,14 @@ mod tests {
         assert_eq!(json["progress"]["objectsScanned"], 7);
         assert_eq!(json["progress"]["objectsHealed"], 3);
         assert_eq!(json["progress"]["objectsFailed"], 1);
+        assert_eq!(json["progress"]["skippedObjects"], 3);
+        assert_eq!(json["progress"]["objectsTotalCount"], 10);
+        assert_eq!(json["progress"]["objectsTotalSize"], 8192);
         assert_eq!(json["progress"]["bytesProcessed"], 4096);
+        assert_eq!(json["progress"]["progressState"], "running");
+        assert_eq!(json["progress"]["baselineGeneration"], 42);
+        assert_eq!(json["progress"]["baselineKnown"], true);
+        assert_eq!(json["progress"]["counterUnknown"], false);
     }
 
     #[test]
@@ -2242,10 +2238,18 @@ mod tests {
                 ..Default::default()
             },
             Some(NodeHealProgress {
+                kind: rustfs_heal::heal::progress::HealProgressKind::ObjectSweep,
                 objects_scanned: 3,
                 objects_healed: 1,
                 objects_failed: 0,
+                skipped_objects: 2,
+                objects_total_count: 6,
+                objects_total_size: 400,
                 bytes_processed: 100,
+                progress_state: rustfs_heal::heal::progress::HealProgressState::Running,
+                baseline_generation: Some(9),
+                baseline_known: true,
+                ..Default::default()
             }),
         );
         let peer = NodeHealStatusSnapshot::for_test(
@@ -2265,10 +2269,17 @@ mod tests {
                 ..Default::default()
             },
             Some(NodeHealProgress {
+                kind: rustfs_heal::heal::progress::HealProgressKind::ObjectSweep,
                 objects_scanned: 5,
                 objects_healed: 4,
                 objects_failed: 1,
+                objects_total_count: 4,
+                objects_total_size: 1600,
                 bytes_processed: 900,
+                progress_state: rustfs_heal::heal::progress::HealProgressState::Running,
+                baseline_generation: Some(9),
+                baseline_known: true,
+                ..Default::default()
             }),
         );
 
@@ -2287,7 +2298,15 @@ mod tests {
         assert_eq!(progress.objects_scanned, 8);
         assert_eq!(progress.objects_healed, 5);
         assert_eq!(progress.objects_failed, 1);
+        assert_eq!(progress.skipped_objects, 2);
+        assert_eq!(progress.objects_total_count, 10);
+        assert_eq!(progress.objects_total_size, 2000);
         assert_eq!(progress.bytes_processed, 1000);
+        assert_eq!(progress.progress_percentage, 50.0);
+        assert_eq!(progress.progress_state, rustfs_heal::heal::progress::HealProgressState::Running);
+        assert_eq!(progress.baseline_generation, Some(9));
+        assert!(progress.baseline_known);
+        assert!(!progress.counter_unknown);
 
         assert_eq!(peer_first.state, HealRuntimeState::Active);
         assert_eq!(peer_first.operations, local_first.operations);
@@ -2327,6 +2346,7 @@ mod tests {
             objects_healed: value,
             objects_failed: value,
             bytes_processed: value,
+            ..Default::default()
         };
         let saturated = NodeHealStatusSnapshot::for_test(
             true,

rustfs/src/storage/rpc/node_service.rs

@@ -1912,7 +1912,7 @@ impl Node for NodeService {
 
     async fn background_heal_status(
         &self,
-        _request: Request<BackgroundHealStatusRequest>,
+        request: Request<BackgroundHealStatusRequest>,
     ) -> Result<Response<BackgroundHealStatusResponse>, Status> {
         if self.resolve_object_store().is_none() {
             return Ok(Response::new(BackgroundHealStatusResponse {
@@ -1922,7 +1922,7 @@ impl Node for NodeService {
             }));
         }
         let snapshot = heal::capture_node_heal_status(rustfs_scanner::scanner::BackgroundHealInfo::default()).await;
-        match heal::encode_node_heal_status(&snapshot) {
+        match heal::encode_node_heal_status(&snapshot, request.into_inner().protocol_version) {
             Ok(bg_heal_state) => Ok(Response::new(BackgroundHealStatusResponse {
                 success: true,
                 bg_heal_state: bg_heal_state.into(),

rustfs/src/storage/rpc/node_service/heal.rs

@@ -25,7 +25,8 @@ use std::io::Cursor;
 
 use super::super::encode_msgpack_map;
 
-const NODE_HEAL_STATUS_VERSION: u8 = 1;
+const NODE_HEAL_STATUS_PREVIOUS_VERSION: u8 = 1;
+const NODE_HEAL_STATUS_VERSION: u8 = 2;
 const NODE_HEAL_STATUS_MAX_SIZE: usize = 64 * 1024;
 const NODE_REPLACEMENT_RECOVERY_STATUS_VERSION: u8 = 1;
 const NODE_REPLACEMENT_RECOVERY_STATUS_MAX_SIZE: usize = 64 * 1024;
@@ -172,13 +173,38 @@ pub(crate) fn heal_topology_fingerprint(endpoint_pools: &EndpointServerPools) ->
     Ok(hex_simd::encode_to_string(hasher.finalize(), hex_simd::AsciiCase::Lower))
 }
 
-#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
+pub(crate) type NodeHealProgress = rustfs_heal::HealProgress;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase", deny_unknown_fields)]
-pub(crate) struct NodeHealProgress {
-    pub objects_scanned: u64,
-    pub objects_healed: u64,
-    pub objects_failed: u64,
-    pub bytes_processed: u64,
+struct NodeHealProgressV1 {
+    objects_scanned: u64,
+    objects_healed: u64,
+    objects_failed: u64,
+    bytes_processed: u64,
+}
+
+impl From<&NodeHealProgress> for NodeHealProgressV1 {
+    fn from(progress: &NodeHealProgress) -> Self {
+        Self {
+            objects_scanned: progress.objects_scanned,
+            objects_healed: progress.objects_healed,
+            objects_failed: progress.objects_failed,
+            bytes_processed: progress.bytes_processed,
+        }
+    }
+}
+
+impl From<NodeHealProgressV1> for NodeHealProgress {
+    fn from(progress: NodeHealProgressV1) -> Self {
+        Self {
+            objects_scanned: progress.objects_scanned,
+            objects_healed: progress.objects_healed,
+            objects_failed: progress.objects_failed,
+            bytes_processed: progress.bytes_processed,
+            ..Default::default()
+        }
+    }
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -220,6 +246,48 @@ pub(crate) struct NodeHealStatusSnapshot {
     pub progress: Option<NodeHealProgress>,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase", deny_unknown_fields)]
+struct NodeHealStatusSnapshotV1 {
+    version: u8,
+    services_enabled: bool,
+    initialized: bool,
+    info: NodeHealInfo,
+    operations: HealOperationsSnapshot,
+    progress: Option<NodeHealProgressV1>,
+}
+
+impl From<&NodeHealStatusSnapshot> for NodeHealStatusSnapshotV1 {
+    fn from(snapshot: &NodeHealStatusSnapshot) -> Self {
+        Self {
+            version: NODE_HEAL_STATUS_PREVIOUS_VERSION,
+            services_enabled: snapshot.services_enabled,
+            initialized: snapshot.initialized,
+            info: snapshot.info.clone(),
+            operations: snapshot.operations,
+            progress: snapshot.progress.as_ref().map(NodeHealProgressV1::from),
+        }
+    }
+}
+
+impl From<NodeHealStatusSnapshotV1> for NodeHealStatusSnapshot {
+    fn from(snapshot: NodeHealStatusSnapshotV1) -> Self {
+        Self {
+            version: snapshot.version,
+            services_enabled: snapshot.services_enabled,
+            initialized: snapshot.initialized,
+            info: snapshot.info,
+            operations: snapshot.operations,
+            progress: snapshot.progress.map(NodeHealProgress::from),
+        }
+    }
+}
+
+#[derive(Deserialize)]
+struct NodeHealStatusVersion {
+    version: u8,
+}
+
 impl NodeHealStatusSnapshot {
     #[cfg(test)]
     pub(crate) fn for_test(
@@ -249,14 +317,7 @@ impl NodeHealStatusSnapshot {
 }
 
 pub(crate) async fn capture_node_heal_status(info: BackgroundHealInfo) -> NodeHealStatusSnapshot {
-    let progress = rustfs_heal::current_heal_progress_snapshot()
-        .await
-        .map(|progress| NodeHealProgress {
-            objects_scanned: progress.objects_scanned,
-            objects_healed: progress.objects_healed,
-            objects_failed: progress.objects_failed,
-            bytes_processed: progress.bytes_processed,
-        });
+    let progress = rustfs_heal::current_heal_progress_snapshot().await;
 
     NodeHealStatusSnapshot {
         version: NODE_HEAL_STATUS_VERSION,
@@ -268,22 +329,43 @@ pub(crate) async fn capture_node_heal_status(info: BackgroundHealInfo) -> NodeHe
     }
 }
 
-pub(crate) fn encode_node_heal_status(snapshot: &NodeHealStatusSnapshot) -> Result<Vec<u8>, String> {
-    encode_msgpack_map(snapshot).map_err(|err| format!("failed to encode node heal status: {err}"))
+pub(crate) fn encode_node_heal_status(snapshot: &NodeHealStatusSnapshot, protocol_version: u32) -> Result<Vec<u8>, String> {
+    let encoded = if protocol_version < rustfs_protos::BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION {
+        encode_msgpack_map(&NodeHealStatusSnapshotV1::from(snapshot))
+    } else {
+        let mut snapshot = snapshot.clone();
+        snapshot.version = NODE_HEAL_STATUS_VERSION;
+        encode_msgpack_map(&snapshot)
+    };
+    encoded.map_err(|err| format!("failed to encode node heal status: {err}"))
 }
 
 pub(crate) fn decode_node_heal_status(data: &[u8]) -> Result<NodeHealStatusSnapshot, String> {
     if data.len() > NODE_HEAL_STATUS_MAX_SIZE {
         return Err("node heal status exceeds size limit".to_string());
     }
-    let mut deserializer = Deserializer::new(Cursor::new(data));
-    let snapshot = NodeHealStatusSnapshot::deserialize(&mut deserializer)
-        .map_err(|err| format!("failed to decode node heal status: {err}"))?;
+    let decode_version = || {
+        let mut deserializer = Deserializer::new(Cursor::new(data));
+        NodeHealStatusVersion::deserialize(&mut deserializer)
+            .map(|version| (version, deserializer))
+            .map_err(|err| format!("failed to decode node heal status: {err}"))
+    };
+    let (version, deserializer) = decode_version()?;
     if usize::try_from(deserializer.get_ref().position()).ok() != Some(data.len()) {
         return Err("node heal status contains trailing data".to_string());
     }
-    if snapshot.version != NODE_HEAL_STATUS_VERSION {
-        return Err(format!("unsupported node heal status version: {}", snapshot.version));
+
+    let mut deserializer = Deserializer::new(Cursor::new(data));
+    let snapshot = match version.version {
+        NODE_HEAL_STATUS_PREVIOUS_VERSION => {
+            NodeHealStatusSnapshotV1::deserialize(&mut deserializer).map(NodeHealStatusSnapshot::from)
+        }
+        NODE_HEAL_STATUS_VERSION => NodeHealStatusSnapshot::deserialize(&mut deserializer),
+        version => return Err(format!("unsupported node heal status version: {version}")),
+    }
+    .map_err(|err| format!("failed to decode node heal status: {err}"))?;
+    if usize::try_from(deserializer.get_ref().position()).ok() != Some(data.len()) {
+        return Err("node heal status contains trailing data".to_string());
     }
     Ok(snapshot)
 }
@@ -387,9 +469,10 @@ pub(crate) fn decode_node_replacement_recovery_status(data: &[u8]) -> Result<Nod
 #[cfg(test)]
 mod tests {
     use super::{
-        NODE_HEAL_STATUS_MAX_SIZE, NODE_HEAL_STATUS_VERSION, NodeHealProgress, NodeHealStatusSnapshot,
-        NodeReplacementRecoveryStatusSnapshot, decode_node_heal_status, decode_node_replacement_recovery_status,
-        encode_node_heal_status, encode_node_replacement_recovery_status, heal_control_coordinator, heal_topology_fingerprint,
+        NODE_HEAL_STATUS_MAX_SIZE, NODE_HEAL_STATUS_PREVIOUS_VERSION, NODE_HEAL_STATUS_VERSION, NodeHealProgress,
+        NodeHealStatusSnapshot, NodeReplacementRecoveryStatusSnapshot, decode_node_heal_status,
+        decode_node_replacement_recovery_status, encode_node_heal_status, encode_node_replacement_recovery_status,
+        heal_control_coordinator, heal_topology_fingerprint,
     };
     use crate::storage::storage_api::{
         Endpoint,
@@ -533,20 +616,72 @@ mod tests {
                 ..Default::default()
             },
             Some(NodeHealProgress {
+                kind: rustfs_heal::heal::progress::HealProgressKind::ObjectSweep,
                 objects_scanned: 7,
                 objects_healed: 5,
                 objects_failed: 1,
+                skipped_objects: 1,
+                objects_total_count: 10,
+                objects_total_size: 2048,
                 bytes_processed: 1024,
+                progress_percentage: 50.0,
+                progress_state: rustfs_heal::heal::progress::HealProgressState::Running,
+                baseline_generation: Some(42),
+                baseline_known: true,
+                ..Default::default()
             }),
         );
 
-        let encoded = encode_node_heal_status(&snapshot).expect("snapshot should encode");
+        let encoded = encode_node_heal_status(&snapshot, rustfs_protos::BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION)
+            .expect("snapshot should encode");
         let decoded = decode_node_heal_status(&encoded).expect("snapshot should decode");
         assert_eq!(decoded.version, NODE_HEAL_STATUS_VERSION);
         assert_eq!(decoded.operations.queue_length, 2);
         assert_eq!(decoded.progress, snapshot.progress);
     }
 
+    #[test]
+    fn node_heal_status_v1_encoding_preserves_rolling_compatibility() {
+        let snapshot = NodeHealStatusSnapshot::for_test(
+            true,
+            true,
+            BackgroundHealInfo::default(),
+            HealOperationsSnapshot::default(),
+            Some(NodeHealProgress {
+                objects_scanned: 7,
+                objects_healed: 5,
+                objects_failed: 1,
+                skipped_objects: 3,
+                bytes_processed: 1024,
+                progress_state: rustfs_heal::heal::progress::HealProgressState::Running,
+                baseline_known: true,
+                ..Default::default()
+            }),
+        );
+
+        let encoded =
+            encode_node_heal_status(&snapshot, u32::from(NODE_HEAL_STATUS_PREVIOUS_VERSION)).expect("v1 snapshot should encode");
+        let wire: serde_json::Value = rmp_serde::from_slice(&encoded).expect("v1 snapshot should decode as JSON");
+        let progress = wire["progress"].as_object().expect("v1 progress should be a map");
+        assert_eq!(wire["version"], NODE_HEAL_STATUS_PREVIOUS_VERSION);
+        assert_eq!(progress.len(), 4);
+        assert_eq!(progress["objectsScanned"], 7);
+        assert!(!progress.contains_key("skippedObjects"));
+
+        let decoded = decode_node_heal_status(&encoded).expect("v1 snapshot should decode");
+        let progress = decoded.progress.as_ref().expect("v1 progress should be present");
+        assert_eq!(decoded.version, NODE_HEAL_STATUS_PREVIOUS_VERSION);
+        assert_eq!(progress.objects_scanned, 7);
+        assert_eq!(progress.progress_state, rustfs_heal::heal::progress::HealProgressState::Unknown);
+        assert!(!progress.baseline_known);
+
+        let upgraded = encode_node_heal_status(&decoded, rustfs_protos::BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION)
+            .expect("decoded v1 snapshot should upgrade to v2");
+        let upgraded = decode_node_heal_status(&upgraded).expect("upgraded snapshot should decode");
+        assert_eq!(upgraded.version, NODE_HEAL_STATUS_VERSION);
+        assert_eq!(upgraded.progress.as_ref(), Some(progress));
+    }
+
     #[test]
     fn node_heal_status_rejects_unknown_version() {
         let mut snapshot = NodeHealStatusSnapshot::for_test(
@@ -558,7 +693,7 @@ mod tests {
         );
         snapshot.version += 1;
 
-        let encoded = encode_node_heal_status(&snapshot).expect("snapshot should encode");
+        let encoded = rmp_serde::to_vec_named(&snapshot).expect("snapshot should encode");
         let err = decode_node_heal_status(&encoded).expect_err("unknown version should fail closed");
         assert!(err.contains("unsupported node heal status version"));
     }
@@ -579,13 +714,22 @@ mod tests {
                 "activeBySource": {"scanner": 0, "admin": 1, "autoHeal": 0, "internal": 0, "readRepair": 0},
                 "retryingBySource": {"scanner": 0, "admin": 0, "autoHeal": 0, "internal": 0, "readRepair": 0}
             },
-            "progress": null
+            "progress": {
+                "objectsScanned": 7,
+                "objectsHealed": 5,
+                "objectsFailed": 1,
+                "bytesProcessed": 1024
+            }
         });
         let encoded = rmp_serde::to_vec_named(&fixture).expect("fixture should encode");
         let decoded = decode_node_heal_status(&encoded).expect("fixed v1 fixture should decode");
         assert_eq!(decoded.info().bitrot_start_cycle, 9);
         assert_eq!(decoded.operations.queue_length, 2);
         assert_eq!(decoded.operations.queued_by_source.mrf, 0);
+        let progress = decoded.progress.expect("legacy progress should decode");
+        assert_eq!(progress.objects_scanned, 7);
+        assert!(!progress.baseline_known);
+        assert_eq!(progress.progress_state, rustfs_heal::heal::progress::HealProgressState::Unknown);
     }
 
     #[test]
@@ -631,7 +775,8 @@ mod tests {
             HealOperationsSnapshot::default(),
             None,
         );
-        let encoded = encode_node_heal_status(&snapshot).expect("snapshot should encode");
+        let encoded = encode_node_heal_status(&snapshot, rustfs_protos::BACKGROUND_HEAL_STATUS_PROTOCOL_VERSION)
+            .expect("snapshot should encode");
         let encoded_json: serde_json::Value = rmp_serde::from_slice(&encoded).expect("encoded snapshot should decode as JSON");
         assert_eq!(encoded_json["info"]["bitrotStartTime"], serde_json::json!("2023-11-14T22:13:20.123456Z"));
     }