type PartTooBig struct{}

func (e PartTooBig) Error() string {
	return "Part size bigger than the allowed limit"
}

// InvalidETag error returned when the etag has changed on disk
type InvalidETag struct{}

func (e InvalidETag) Error() string {
	return "etag of the object has changed"
}

// BackendDown is returned for network errors
type BackendDown struct {
	Err string
}

func TestListObjectPartsDiskNotFound(t *testing.T) {
	ExecObjectLayerDiskAlteredTest(t, testListObjectPartsDiskNotFound)
}

// testListObjectParts - Tests validate listing of object parts when disks go offline.
func testListObjectPartsDiskNotFound(obj ObjectLayer, instanceType string, disks []string, t *testing.T) {

   * Hashing} class is loaded. <b>Do not use this method</b> if hash codes may escape the current
   * process in any way, for example being sent over RPC, or saved to disk. For a general-purpose,
   * non-cryptographic hash function that will never change behavior, we suggest {@link
   * #murmur3_128}.
   *

			if !srcTimestamp.IsZero() {
				ondiskTimestamp, err := time.Parse(time.RFC3339Nano, lastTaggingTimestamp)
				// update tagging metadata only if replica  timestamp is newer than what's on disk
				if err != nil || (err == nil && !ondiskTimestamp.After(srcTimestamp)) {
					srcInfo.UserDefined[ReservedMetadataPrefixLower+TaggingTimestamp] = srcTimestamp.UTC().Format(time.RFC3339Nano)

   *     READ 335c4c6028171cfddfbaae1a9c313c52
   *     READ 3400330d1dfc7f3f7f4b8d4d803dfcf6
   *
   * The first five lines of the journal form its header. They are the constant string
   * "libcore.io.DiskLruCache", the disk cache's version, the application's version, the value
   * count, and a blank line.
   *
   * Each of the subsequent lines in the file is a record of the state of a cache entry. Each line

        <abbr title="{full phrase} – {translation of full phrase}: {translation of other information}">{abbreviation}</abbr>

Examples:

    Source (English):

        «««
        <abbr title="Input/Output: disk reading or writing, network communication.">I/O</abbr>
        <abbr title="Content Delivery Network: service, that provides static files.">CDN</abbr>

	delete(j.MetaUser, xhttp.AmzRestoreRequestDate)
}

// Signature will return a signature that is expected to be the same across all disks.
func (j *xlMetaV2Object) Signature() [4]byte {
	// Shallow copy
	c := *j
	// Zero fields that will vary across disks
	c.ErasureIndex = 0

	// Nil 0 size allownil, so we don't differentiate between nil and 0 len.
	allEmpty := true
	for _, tag := range c.PartETags {

| `minio_node_drive_writes_await`      | Average time for write requests to be served on a drive. |
| `minio_node_drive_perc_util`         | Percentage of time the disk was busy since uptime.       |

## Network Interface Metrics

| Name                          | Description                                                |

		for _, v := range vectors {
			b.Run(v.label, func(b *testing.B) {
				b.ReportAllocs()
				for i := 0; i < b.N; i++ {
					// Writing to io.Discard because we want to
					// test purely the writer code and not bring in disk performance into this.
					tw := NewWriter(io.Discard)
					for _, file := range v.files {
						if err := tw.WriteHeader(file.hdr); err != nil {
							b.Errorf("unexpected WriteHeader error: %v", err)
						}

// The restore operation could be in one of the following states,
// - in progress (no content on MinIO's disks yet)
// - completed
// - completed but expired (again, no content on MinIO's disks)
func (r restoreObjStatus) OnDisk() bool {
	if expiry, ok := r.Expiry(); ok && time.Now().UTC().Before(expiry) {
		// completed
		return true
	}