allow ListObjects() when a prefix is an object (#17074)

cmd/erasure-metadata-utils.go

@@ -23,7 +23,6 @@ import (
 	"fmt"
 	"hash/crc32"
 	"io"
-	"strings"
 
 	"github.com/minio/minio/internal/logger"
 	"github.com/minio/minio/internal/sync/errgroup"
@@ -173,10 +172,8 @@ func readAllFileInfo(ctx context.Context, disks []StorageAPI, bucket, object, ve
 		errFileVersionNotFound,
 		errDiskNotFound,
 		errUnformattedDisk,
-	}
+		io.ErrUnexpectedEOF, // some times we would read without locks, ignore these errors
-	if strings.HasPrefix(bucket, minioMetaBucket) {
+		io.EOF,              // some times we would read without locks, ignore these errors
-		// listing object might be truncated, ignore such errors from logging.
-		ignoredErrs = append(ignoredErrs, io.ErrUnexpectedEOF)
 	}
 	errs := g.Wait()
 	for index, err := range errs {

cmd/erasure-object.go

@@ -552,6 +552,8 @@ func readAllXL(ctx context.Context, disks []StorageAPI, bucket, object string, r
 		errVolumeNotFound,
 		errFileVersionNotFound,
 		errDiskNotFound,
+		io.ErrUnexpectedEOF, // some times we would read without locks, ignore these errors
+		io.EOF,              // some times we would read without locks, ignore these errors
 	}
 
 	errs := g.Wait()
@@ -559,13 +561,6 @@ func readAllXL(ctx context.Context, disks []StorageAPI, bucket, object string, r
 		if err == nil {
 			continue
 		}
-		if bucket == minioMetaBucket {
-			// minioMetaBucket "reads" for .metacache are not written with O_SYNC
-			// so there is a potential for them to not fully committed to stable
-			// storage leading to unexpected EOFs. Allow these failures to
-			// be ignored since the caller already ignores them in streamMetadataParts()
-			ignoredErrs = append(ignoredErrs, io.ErrUnexpectedEOF, io.EOF)
-		}
 		if !IsErr(err, ignoredErrs...) {
 			logger.LogOnceIf(ctx, fmt.Errorf("Drive %s, path (%s/%s) returned an error (%w)",
 				disks[index], bucket, object, err),

cmd/erasure-server-pool.go

@@ -1307,7 +1307,7 @@ func (z *erasureServerPools) ListObjects(ctx context.Context, bucket, prefix, ma
 	}
 	opts.setBucketMeta(ctx)
 
-	if len(prefix) > 0 && maxKeys == 1 && delimiter == "" && marker == "" {
+	if len(prefix) > 0 && maxKeys == 1 && marker == "" {
 		// Optimization for certain applications like
 		// - Cohesity
 		// - Actifio, Splunk etc.