defer done()

			return loadDataUsageFromBackend(ctx, objectAPI)
		},
	)

	dataUsageInfo, _ := bucketStorageCache.Get()

	// If etcd, dns federation configured list buckets from etcd.
	var err error
	var buckets []BucketInfo
	if globalDNSConfig != nil && globalBucketFederation {
		dnsBuckets, err := globalDNSConfig.List()
		if err != nil && !IsErrIgnored(err,