Check for abandoned data when healing (#16122)

cmd/erasure-server-pool.go

@@ -2072,7 +2072,12 @@ func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix str
 		if err != nil {
 			return healObjectFn(bucket, entry.name, "")
 		}
-
+		if opts.Remove && !opts.DryRun {
+			err := z.CheckAbandonedParts(ctx, bucket, entry.name, opts)
+			if err != nil {
+				logger.LogIf(ctx, fmt.Errorf("unable to check object %s/%s for abandoned data: %w", bucket, entry.name, err))
+			}
+		}
 		for _, version := range fivs.Versions {
 			err := healObjectFn(bucket, version.Name, version.VersionID)
 			if err != nil && !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
@@ -2424,3 +2429,30 @@ func (z *erasureServerPools) RestoreTransitionedObject(ctx context.Context, buck
 
 	return z.serverPools[idx].RestoreTransitionedObject(ctx, bucket, object, opts)
 }
+
+func (z *erasureServerPools) CheckAbandonedParts(ctx context.Context, bucket, object string, opts madmin.HealOpts) error {
+	object = encodeDirObject(object)
+	if z.SinglePool() {
+		return z.serverPools[0].CheckAbandonedParts(ctx, bucket, object, opts)
+	}
+	errs := make([]error, len(z.serverPools))
+	var wg sync.WaitGroup
+	for idx, pool := range z.serverPools {
+		if z.IsSuspended(idx) {
+			continue
+		}
+		wg.Add(1)
+		go func(idx int, pool *erasureSets) {
+			defer wg.Done()
+			err := pool.CheckAbandonedParts(ctx, bucket, object, opts)
+			if err != nil && !isErrObjectNotFound(err) && !isErrVersionNotFound(err) {
+				errs[idx] = err
+			}
+		}(idx, pool)
+	}
+	wg.Wait()
+	for _, err := range errs {
+		return err
+	}
+	return nil
+}