globalInplaceUpdateDisabled = strings.EqualFold(env.Get(config.EnvUpdate, config.EnableOn), config.EnableOff)

	// Check if the supported credential env vars,
	// "MINIO_ROOT_USER" and "MINIO_ROOT_PASSWORD" are provided
	// Warn user if deprecated environment variables,
	// "MINIO_ACCESS_KEY" and "MINIO_SECRET_KEY", are defined
	// Check all error conditions first
	//nolint:gocritic

	config.Lock()
	defer config.Unlock()

	// check if tier name is in all caps
	tierName := tier.Name
	if tierName != strings.ToUpper(tierName) {
		return errTierNameNotUppercase
	}

	// check if tier name already in use
	if _, exists := config.isTierNameInUse(tierName); exists {
		return errTierAlreadyExists
	}

	}

	// We know XFS already supports O_DIRECT no need to check.
	if fsType == "XFS" {
		return nil
	}

	// For all other FS pay the price of not using our recommended filesystem.

	// Check if backend is writable and supports O_DIRECT
	uuid := mustGetUUID()
	filePath := pathJoin(s.drivePath, minioMetaTmpDeletedBucket, ".writable-check-"+uuid+".tmp")

	// Create top level directories if they don't exist.

		return false
	}

	if err := storageServerRequestValidate(r); err != nil {
		s.writeErrorResponse(w, err)
		return false
	}

	return true
}

// IsValid - To authenticate and check if the disk-id in the request corresponds to the underlying disk.
func (s *storageRESTServer) IsValid(w http.ResponseWriter, r *http.Request) bool {
	if !s.IsAuthValid(w, r) {
		return false
	}

	_, found := cache.iamUsersMap[accessKey]

	// Check for regular user access key
	if !found {
		store.loadUser(ctx, accessKey, regUser, cache.iamUsersMap)
		if _, found = cache.iamUsersMap[accessKey]; found {
			// load mapped policies
			store.loadMappedPolicyWithRetry(ctx, accessKey, regUser, false, cache.iamUserPolicyMap, 3)
		}
	}

	// Check for service account
	if !found {

		vc, err = globalBucketVersioningSys.Get(bi.Name)
		if err != nil {
			return err
		}

		// Check if the current bucket has a configured lifecycle policy
		lc, err = globalLifecycleSys.Get(bi.Name)
		if err != nil && !errors.Is(err, BucketLifecycleNotFound{Bucket: bi.Name}) {
			return err
		}

		// Check if bucket is object locked.
		lr, err = globalBucketObjectLockSys.Get(bi.Name)
		if err != nil {
			return err

	// Call the ServeHTTP to execute the handler.
	apiRouter.ServeHTTP(rec, req)

	ctx, cancel := context.WithCancel(GlobalContext)
	defer cancel()

	// Now check if we actually wrote to backend (regardless of the response
	// returned by the server).
	z := obj.(*erasureServerPools)
	xl := z.serverPools[0].sets[0]
	erasureDisks := xl.getDisks()

	}

	return target, nil
}

var errInvalidPsqlTablename = errors.New("invalid PostgreSQL table")

func validatePsqlTableName(name string) error {
	// check for quoted string (string may not contain a quote)
	if match, err := regexp.MatchString("^\"[^\"]+\"$", name); err != nil {
		return err
	} else if match {
		return nil
	}

	}
	if final == nil {
		return cache, errors.New("no final cache")
	}
	return *final, nil
}

func (client *storageRESTClient) GetDiskID() (string, error) {
	if !client.IsOnline() {
		// make sure to check if the disk is offline, since the underlying
		// value is cached we should attempt to invalidate it if such calls
		// were attempted. This can lead to false success under certain conditions

		}
	}
	return i
}

// Does all errors indicate we need to initialize all disks?.
func shouldInitErasureDisks(errs []error) bool {
	return countErrs(errs, errUnformattedDisk) == len(errs)
}

// Check if unformatted disks are equal to 50%+1 of all the drives.
func quorumUnformattedDisks(errs []error) bool {
	return countErrs(errs, errUnformattedDisk) >= (len(errs)/2)+1
}