// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package drive

import (
	"sync"
	"time"

	"github.com/minio/minio/internal/config"
	"github.com/minio/pkg/v2/env"
)

// DefaultKVS - default KVS for drive
var DefaultKVS = config.KVS{
	config.KV{
		Key:   MaxTimeout,
		Value: "",
	},
}

var configLk sync.RWMutex

}

func (m *MetricValues) setDriveBasicMetrics(drive madmin.Disk, labels []string) {
	m.Set(driveUsedBytes, float64(drive.UsedSpace), labels...)
	m.Set(driveFreeBytes, float64(drive.AvailableSpace), labels...)
	m.Set(driveTotalBytes, float64(drive.TotalSpace), labels...)
	m.Set(driveUsedInodes, float64(drive.UsedInodes), labels...)
	m.Set(driveFreeInodes, float64(drive.FreeInodes), labels...)

var errDriveIsRoot = StorageErr("drive is part of root drive, will not be used")

// errFaultyRemoteDisk - remote disk is faulty.
var errFaultyRemoteDisk = StorageErr("remote drive is faulty")

// errFaultyDisk - disk is faulty.
var errFaultyDisk = StorageErr("drive is faulty")

// errDiskAccessDenied - we don't have write permissions on disk.
var errDiskAccessDenied = StorageErr("drive access denied")

		FSType: string(s.Fstypename[:]),
	}
	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
	}
	info.Used = info.Total - info.Free
	return info, nil
}

// GetDriveStats returns IO stats of the drive by its major:minor
func GetDriveStats(major, minor uint32) (iostats IOStats, err error) {

	}
	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
	}
	info.Used = info.Total - info.Free
	return info, nil
}

// GetDriveStats returns IO stats of the drive by its major:minor
func GetDriveStats(major, minor uint32) (iostats IOStats, err error) {

	// The global subnet config
	globalSubnetConfig subnet.Config

	// The global callhome config
	globalCallhomeConfig callhome.Config

	// The global drive config
	globalDriveConfig drive.Config

	// The global cache config
	globalCacheConfig cache.Config

	// Global server's network statistics
	globalConnStats = newConnStats()

	// Global HTTP request statistics

In most setups this is sufficient to heal the content after drive replacements. Setting `max_sleep` to a *lower* value and setting `max_io` to a *higher* value would make heal go faster.

		Subsystem: "health",
		Name:      "erasure_set_online_drives",
		Help:      "Get the count of the online drives in this erasure set",
		Type:      gaugeMetric,
	}
}

func getClusterErasureSetHealingDrivesMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: "health",
		Name:      "erasure_set_healing_drives",

			Optional:    true,
			Type:        "int",
		},
		config.HelpKV{
			Key:         DriveWorkers,
			Description: `the number of workers per drive to heal a new disk replacement` + defaultHelpPostfix(DriveWorkers),
			Optional:    true,
			Type:        "int",
		},
	}

	// https://github.com/minio/minio/issues/8035
	// XFS can show wrong values at times error out
	// in such scenarios.
	if info.Free > info.Total {
		return info, fmt.Errorf("detected free space (%d) > total drive space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
	}
	info.Used = info.Total - info.Free

	if firstTime {
		bfs, err := blockdevice.NewDefaultFS()
		if err == nil {
			devName := ""