case madmin.AdminAPIVersion:
			desc = fmt.Sprintf("This 'admin' API is not supported by server in '%s'", getMinioMode())
		default:
			desc = fmt.Sprintf("Unexpected client 'admin' API version found '%s', expected '%s', please downgrade the client to older releases", version, madmin.AdminAPIVersion)
		}

			continue
		}
		// NOTE: This code is specifically needed when migrating version
		// V1 to V2 to V3, in a scenario such as this we only need to handle
		// single sets since we never used to support multiple sets in releases
		// with V1 format version.
		if len(format.Erasure.Sets) > 1 {
			continue
		}
		if format.Erasure.This == "" {
			return true
		}
	}
	return false
}

}

// releaseTimeToReleaseTag - converts a time to a string formatted as
// an official MinIO release tag.
//
// An official minio release tag looks like:
// `RELEASE.2017-09-29T19-16-56Z`
func releaseTimeToReleaseTag(releaseTime time.Time) string {
	return "RELEASE." + releaseTime.Format(MinioReleaseTagTimeLayout)
}

// releaseTagToReleaseTime - reverse of `releaseTimeToReleaseTag()`

		// Leader node (that successfully acquires the lock inside licenceUpdaterLoop)
		// will keep performing the license update. If the leader goes down for some
		// reason, the lock will be released and another node will acquire it and
		// take over because of this loop.
		for {
			licenceUpdaterLoop(ctx, objAPI)

			// license update stopped for some reason.
			// sleep for some time and try again.

	if err != nil && err != io.EOF {
		if !isErrBucketNotFound(err) {
			storageLogOnceIf(ctx, err, "erasure-list-objects-path-"+bucket)
		}
		return loi, toObjectErr(err, bucket)
	}
	defer merged.truncate(0) // Release when returning

	if contextCanceled(ctx) {
		return ListObjectVersionsInfo{}, ctx.Err()
	}

	if versionMarker == "" {
		o := listPathOptions{Marker: marker}

		Name:      versionInfo,
		Help:      "MinIO Release tag for the server",
		Type:      gaugeMetric,
	}
}

func getMinIOCommitMD() MetricDescription {
	return MetricDescription{
		Namespace: minioMetricNamespace,
		Subsystem: softwareSubsystem,
		Name:      commitInfo,
		Help:      "Git commit hash for the MinIO release",
		Type:      gaugeMetric,
	}
}

	if !opts.NoLock {
		lock := er.NewNSLock(bucket, object)
		lkctx, err := lock.GetRLock(ctx, globalOperationTimeout)
		if err != nil {
			return nil, err
		}
		ctx = lkctx.Context()

		// Release lock when the metadata is verified, and reader
		// is ready to be read.
		//
		// This is possible to be lock free because
		// - xl.meta for inlined objects has already read the data

	//
	// A careful programmer will check the return value of close(), since it is quite possible that
	// errors on a previous write(2) operation are reported only on the final close() that releases
	// the open file descriptor.
	//
	// Failing to check the return value when closing a file may lead to silent loss of data.
	// This can especially be observed with NFS and with disk quota.
	return w.Close()

}

func validateSvcExpirationInUTC(expirationInUTC time.Time) error {
	if expirationInUTC.IsZero() || expirationInUTC.Equal(timeSentinel) {
		// Service accounts might not have expiration in older releases.
		return nil
	}

	currentTime := time.Now().UTC()
	minExpiration := currentTime.Add(minServiceAccountExpiry)
	maxExpiration := currentTime.Add(maxServiceAccountExpiry)

		return LockContext{ctx: ctx, cancel: func() {}}, OperationTimedOut{}
	}
	timeout.LogSuccess(UTCNow().Sub(start))
	return LockContext{ctx: newCtx, cancel: cancel}, nil
}

// Unlock - block until write lock is released.
func (di *distLockInstance) Unlock(lc LockContext) {
	if lc.cancel != nil {
		lc.cancel()
	}
	di.rwMutex.Unlock(lc.ctx)
}

// RLock - block until read lock is taken or timeout has occurred.