// Precondition fails if object exists (ETag is not empty)
				return oi.ETag != ""
			},
		}

		_, err := obj.NewMultipartUpload(ctx, bucket, object, opts)
		if !isErrReadQuorum(err) {
			t.Errorf("Expected read quorum error when if-none-match is used with quorum failure, got: %v", err)
		}
	})

	t.Run("if-match with wrong ETag and read quorum failure", func(t *testing.T) {

				return oi.ETag != ""
			},
		}

		_, err := obj.PutObject(ctx, bucket, object,
			mustGetPutObjReader(t, bytes.NewReader([]byte("new-value")),
				int64(len("new-value")), "", ""), opts)
		if !isErrReadQuorum(err) {
			t.Errorf("Expected read quorum error when if-none-match is used with quorum failure, got: %v", err)
		}
	})

	t.Run("if-match with read quorum failure", func(t *testing.T) {

	if errors.Is(err, errVolumeNotFound) {
		return true
	}

	var bkNotFound BucketNotFound
	return errors.As(err, &bkNotFound)
}

// isErrReadQuorum check if the error type is InsufficientReadQuorum
func isErrReadQuorum(err error) bool {
	var rquorum InsufficientReadQuorum
	return errors.As(err, &rquorum)
}

// isErrWriteQuorum check if the error type is InsufficientWriteQuorum

		if opts.SkipRebalancing && z.IsPoolRebalancing(pinfo.Index) {
			continue
		}
		if pinfo.Err == nil {
			// found a pool
			return pinfo, z.poolsWithObject(poolObjInfos, opts), nil
		}

		if isErrReadQuorum(pinfo.Err) && !opts.MetadataChg {
			// read quorum is returned when the object is visibly
			// present but its unreadable, we simply ask the writes to
			// schedule to this pool instead. If there is no quorum

			// version being purged is already not found on target.
			if !rinfo.VersionPurgeStatus.Empty() {
				rinfo.VersionPurgeStatus = replication.VersionPurgeComplete
				return rinfo
			}
		case isErrReadQuorum(serr), isErrWriteQuorum(serr):
			// destination has some quorum issues, perform removeObject() anyways
			// to complete the operation.
		default:

	gr, err := getObjectNInfo(ctx, bucket, object, rs, r.Header, opts)
	if err != nil {
		var (
			reader *GetObjectReader
			perr   error
		)

		if (isErrObjectNotFound(err) || isErrVersionNotFound(err) || isErrReadQuorum(err)) && (gr == nil || !gr.ObjInfo.DeleteMarker) {
			proxytgts := getProxyTargets(ctx, bucket, object, opts)
			if !proxytgts.Empty() {
				globalReplicationStats.Load().incProxy(bucket, getObjectAPI, false)