return config.lastRefreshedAt
}

// IsTierValid returns true if there exists a remote tier by name tierName,
// otherwise returns false.
func (config *TierConfigMgr) IsTierValid(tierName string) bool {
	config.RLock()
	defer config.RUnlock()
	_, valid := config.isTierNameInUse(tierName)
	return valid
}

// isTierNameInUse returns tier type and true if there exists a remote tier by

	go func(o listPathOptions) {
		defer wg.Done()
		o.StopDiskAtLimit = true
		listErr = z.listMerged(listCtx, o, filterCh)
		o.debugln("listMerged returned with", listErr)
	}(*o)

	entries, err = filteredResults()
	cancelList()
	wg.Wait()
	if listErr != nil && !errors.Is(listErr, context.Canceled) {
		return entries, listErr
	}
	entries.reuse = true
	truncated := entries.len() > o.Limit || err == nil

	} else if err != nil {
		return true
	}
	// Fall back...
	xlMeta, err := e.xlmeta()
	if err != nil || len(xlMeta.versions) == 0 {
		return true
	}
	return xlMeta.versions[0].header.Type == DeleteType
}

// isAllFreeVersions returns if all objects are free versions.
// If metadata is NOT versioned false will always be returned.
// If v2 and UNABLE to load metadata true will be returned.

		ctxt.configDirSet = true
	case ctx.GlobalIsSet("config-dir"):
		ctxt.ConfigDir = ctx.GlobalString("config-dir")
		ctxt.configDirSet = true
	}

	switch {
	case ctx.IsSet("certs-dir"):
		ctxt.CertsDir = ctx.String("certs-dir")
		ctxt.certsDirSet = true
	case ctx.GlobalIsSet("certs-dir"):
		ctxt.CertsDir = ctx.GlobalString("certs-dir")
		ctxt.certsDirSet = true
	}

		st.Policy = madmin.MetaStatus{IsSet: true, Err: errMsg}
	case bucketNotificationConfig:
		st.Notification = madmin.MetaStatus{IsSet: true, Err: errMsg}
	case bucketLifecycleConfig:
		st.Lifecycle = madmin.MetaStatus{IsSet: true, Err: errMsg}
	case bucketSSEConfig:
		st.SSEConfig = madmin.MetaStatus{IsSet: true, Err: errMsg}
	case bucketTaggingConfig:
		st.Tagging = madmin.MetaStatus{IsSet: true, Err: errMsg}
	case bucketQuotaConfigFile:

		return false
	}
	return true
}

// MetadataEquals returns true if FileInfos Metadata maps are equal, false otherwise.
func (fi FileInfo) MetadataEquals(ofi FileInfo) bool {
	if len(fi.Metadata) != len(ofi.Metadata) {
		return false
	}
	for k, v := range fi.Metadata {
		if ov, ok := ofi.Metadata[k]; !ok || ov != v {
			return false
		}
	}
	return true
}

}

type restError string

func (e restError) Error() string {
	return string(e)
}

func (e restError) Timeout() bool {
	return true
}

// Given a string of the form "host", "host:port", or "[ipv6::address]:port",
// return true if the string includes a port.
func hasPort(s string) bool { return strings.LastIndex(s, ":") > strings.LastIndex(s, "]") }

		inputReqRegion  string
		inputConfRegion string

		expectedResult bool
	}{
		{"", "", true},
		{globalMinioDefaultRegion, "", true},
		{globalMinioDefaultRegion, "US", true},
		{"us-west-1", "US", false},
		{"us-west-1", "us-west-1", true},
		// "US" was old naming convention for 'us-east-1'.
		{"US", "US", true},
	}

	for i, testCase := range testCases {

		// or create format.json
		return true
	}

	storedDiskID, err := s.getStorage().GetDiskID()
	if err != nil {
		s.writeErrorResponse(w, err)
		return false
	}

	if diskID != storedDiskID {
		s.writeErrorResponse(w, errDiskStale)
		return false
	}

	// If format.json is available and request sent the right disk-id, we allow the request
	return true
}

				oiCache.Add(od, &exp.ObjectInfo)
			}

			var done bool
			// DeleteObject(deletePrefix: true) to expire all versions of an object
			for _, exp := range toExpireAll {
				var success bool
				for attempts := 1; attempts <= retryAttempts; attempts++ {
					select {
					case <-ctx.Done():
						done = true
					default:
					}
					stopFn := globalBatchJobsMetrics.trace(batchJobMetricExpire, ri.JobID, attempts)