if err != nil {
		return nil, err
	}
	exp := argP.Expand()

	if node == "" {
		for index, e := range exp {
			result = append(result, localDisk{index: index, path: strings.Join(e, "")})
		}
	} else {
		for index, e := range exp {
			u, err := url.Parse(strings.Join(e, ""))
			if err != nil {
				return nil, err
			}
			if strings.Contains(u.Host, node) {

		// setup stale disks for the test case
		staleDisks := make([]StorageAPI, len(disks))
		copy(staleDisks, disks)
		for j := 0; j < len(staleDisks); j++ {
			if j < test.offDisks {
				readers[j] = nil
			} else {
				staleDisks[j] = nil
			}
		}
		for j := 0; j < test.badDisks; j++ {
			switch r := readers[test.offDisks+j].(type) {
			case *streamingBitrotReader:
				r.disk = badDisk{nil}

			errCode := doesPresignV2SignatureMatch(req)
			if errCode != testCase.expected {
				t.Errorf("(%d) expected to get %s, instead got %s", i, niceError(testCase.expected), niceError(errCode))
			}
		} else {
			err = preSignV2(req, accessKey, secretKey, now.Unix()+60)
			if err != nil {
				t.Fatalf("(%d) failed to preSignV2 http request, got %v", i, err)
			}
			// Should be set since we are simulating a http server.

		listenCtx,
		srv.Addrs,
		srv.TCPOptions,
	)

	var interfaceFound bool
	for i := range listenErrs {
		if listenErrs[i] != nil {
			listenErrCallback(srv.Addrs[i], listenErrs[i])
		} else {
			interfaceFound = true
		}
	}
	if !interfaceFound {
		return nil, errors.New("no available interface found")
	}

	// Wrap given handler to do additional

					if ok {
						if prev.Online != result.Online || !result.Online {
							if !prev.lastHCAt.IsZero() {
								offline = time.Since(prev.lastHCAt) + prev.offlineDuration
							} else {
								offline = prev.offlineDuration
							}
						} else if result.Online {
							offline = prev.offlineDuration
						}
					}
					lastOnline = prev.lastOnline
					if result.Online {
						lastOnline = time.Now()
					}

	}

	// Return the ModTime
	return fi.ModTime().UTC(), nil
}

// GetCurrentReleaseTime - returns this process's release time.  If it
// is official minio version, parsed version is returned else minio
// binary's mod time is returned.
func GetCurrentReleaseTime() (releaseTime time.Time, err error) {
	if releaseTime, err = minioVersionToReleaseTime(Version); err == nil {
		return releaseTime, err
	}

			zb0002, err = dc.ReadArrayHeader()
			if err != nil {
				err = msgp.WrapError(err, "Tags")
				return
			}
			if cap(z.Tags) >= int(zb0002) {
				z.Tags = (z.Tags)[:zb0002]
			} else {
				z.Tags = make([]BatchJobKV, zb0002)
			}
			for za0001 := range z.Tags {
				err = z.Tags[za0001].DecodeMsg(dc)
				if err != nil {
					err = msgp.WrapError(err, "Tags", za0001)
					return

					found++
					var r io.ReadCloser
					if !si.Dir {
						r, err = disk.ReadFileStream(ctx, volume, si.Name, 0, si.Size)
						if err != nil {
							continue
						}
					} else {
						r = io.NopCloser(bytes.NewBuffer([]byte{}))
					}
					// Keep disk path instead of ID, to ensure that the downloaded zip file can be
					// easily automated with `minio server hostname{1...n}/disk{1...m}`.

	e.init.Do(func() {
		e.cached.Store(&AccElem{})
		atomic.StoreInt64(&e.cachedSec, t)
	})
	acc := e.cached.Load()
	if lastT := atomic.LoadInt64(&e.cachedSec); lastT != t {
		// Check if lastT was changed by someone else.
		if atomic.CompareAndSwapInt64(&e.cachedSec, lastT, t) {
			// Now we swap in a new.
			newAcc := &AccElem{}
			old := e.cached.Swap(newAcc)
			var a AccElem
			a.Size = atomic.LoadInt64(&old.Size)

// and If-Unmodified-Since headers set are validated.
// If-Modified-Since - Return the object only if it has been modified since the specified time, else return a 304 (not modified).
// If-Unmodified-Since - Return the object only if it has not been modified since the specified time, else return a 412 (precondition failed).
func (s *TestSuiteCommon) TestHeadOnObjectLastModified(c *check) {
	// generate a random bucket name.