Help:      "Total number of open file descriptors by the MinIO Server process",
		Type:      gaugeMetric,
	}
}

func getMinioFDLimitMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: fileDescriptorSubsystem,
		Name:      limitTotal,
		Help:      "Limit on total number of open file descriptors for the MinIO Server process",
		Type:      gaugeMetric,

	}
}

// minioCollector is the Custom Collector
type minioCollector struct {
	desc *prometheus.Desc
}

// Describe sends the super-set of all possible descriptors of metrics
func (c *minioCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// Collect is called by the Prometheus registry when collecting metrics.

}

// StorageFull storage ran out of space.
type StorageFull struct{}

func (e StorageFull) Error() string {
	return "Storage reached its minimum free drive threshold."
}

// SlowDown  too many file descriptors open or backend busy .
type SlowDown struct{}

func (e SlowDown) Error() string {
	return "Please reduce your request rate"
}

// RQErrType reason for read quorum error.
type RQErrType int

	CollectorPath collectorPath
	// List of all metric descriptors that could be returned by the loader.
	Descriptors []MetricDescriptor
	// (Optional) Extra (constant) label KV pairs to be added to each metric in
	// the group.
	ExtraLabels map[string]string

	// Loader functions to load metrics. Only one of these will be set. Metrics
	// returned by these functions must be present in the `Descriptors` list.
	loader       MetricsLoaderFn

		if mg, ok := matchingMG[collectorPath]; ok {
			var commonLabels []string
			for k := range mg.ExtraLabels {
				commonLabels = append(commonLabels, k)
			}
			for _, d := range mg.Descriptors {
				labels := slices.Clone(d.VariableLabels)
				labels = append(labels, commonLabels...)
				metric := metricDisplay{
					Name:   mg.MetricFQN(d.Name),
					Help:   d.Help,
					Type:   d.Type.String(),

| `file_descriptor_limit_total` | `gauge`   | Limit on total number of open file descriptors for the MinIO Server process                                    | `server` |
| `file_descriptor_open_total`  | `gauge`   | Total number of open file descriptors by the MinIO Server process                                              | `server` |

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "minio_node_file_descriptor_open_total{job=~\"$scrape_jobs\"}",
          "interval": "",
          "legendFormat": "Open FDs [{{server}}]",
          "refId": "B"
        }
      ],
      "title": "File Descriptors",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",

type minioResourceCollector struct {
	metricsGroups []*MetricsGroupV2
	desc          *prometheus.Desc
}

// Describe sends the super-set of all possible descriptors of metrics
func (c *minioResourceCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// Collect is called by the Prometheus registry when collecting metrics.

| `minio_node_file_descriptor_limit_total`   | Limit on total number of open file descriptors for the MinIO Server process.                                    |
| `minio_node_file_descriptor_open_total`    | Total number of open file descriptors by the MinIO Server process.                                              |

// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// Package lock - implements filesystem locking wrappers around an
// open file descriptor.
package lock

import (
	"errors"
	"os"
	"sync"
)

// ErrAlreadyLocked is returned if the underlying fd is already locked.
var ErrAlreadyLocked = errors.New("file already locked")