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// SPDX-License-Identifier: GPL-3.0-or-later
package nvme
import (
"errors"
"fmt"
"path/filepath"
"strconv"
"time"
)
func (n *NVMe) collect() (map[string]int64, error) {
if n.exec == nil {
return nil, errors.New("nvme-cli is not initialized (nil)")
}
now := time.Now()
if n.forceListDevices || now.Sub(n.listDevicesTime) > n.listDevicesEvery {
n.forceListDevices = false
n.listDevicesTime = now
if err := n.listNVMeDevices(); err != nil {
return nil, err
}
}
mx := make(map[string]int64)
for path := range n.devicePaths {
if err := n.collectNVMeDevice(mx, path); err != nil {
n.Error(err)
n.forceListDevices = true
continue
}
}
return mx, nil
}
func (n *NVMe) collectNVMeDevice(mx map[string]int64, devicePath string) error {
stats, err := n.exec.smartLog(devicePath)
if err != nil {
return fmt.Errorf("exec nvme smart-log for '%s': %v", devicePath, err)
}
device := extractDeviceFromPath(devicePath)
mx["device_"+device+"_temperature"] = int64(float64(parseValue(stats.Temperature)) - 273.15) // Kelvin => Celsius
mx["device_"+device+"_percentage_used"] = parseValue(stats.PercentUsed)
mx["device_"+device+"_available_spare"] = parseValue(stats.AvailSpare)
mx["device_"+device+"_data_units_read"] = parseValue(stats.DataUnitsRead) * 1000 * 512 // units => bytes
mx["device_"+device+"_data_units_written"] = parseValue(stats.DataUnitsWritten) * 1000 * 512 // units => bytes
mx["device_"+device+"_host_read_commands"] = parseValue(stats.HostReadCommands)
mx["device_"+device+"_host_write_commands"] = parseValue(stats.HostWriteCommands)
mx["device_"+device+"_power_cycles"] = parseValue(stats.PowerCycles)
mx["device_"+device+"_power_on_time"] = parseValue(stats.PowerOnHours) * 3600 // hours => seconds
mx["device_"+device+"_unsafe_shutdowns"] = parseValue(stats.UnsafeShutdowns)
mx["device_"+device+"_media_errors"] = parseValue(stats.MediaErrors)
mx["device_"+device+"_num_err_log_entries"] = parseValue(stats.NumErrLogEntries)
mx["device_"+device+"_controller_busy_time"] = parseValue(stats.ControllerBusyTime) * 60 // minutes => seconds
mx["device_"+device+"_warning_temp_time"] = parseValue(stats.WarningTempTime) * 60 // minutes => seconds
mx["device_"+device+"_critical_comp_time"] = parseValue(stats.CriticalCompTime) * 60 // minutes => seconds
mx["device_"+device+"_thm_temp1_trans_count"] = parseValue(stats.ThmTemp1TransCount)
mx["device_"+device+"_thm_temp2_trans_count"] = parseValue(stats.ThmTemp2TransCount)
mx["device_"+device+"_thm_temp1_total_time"] = parseValue(stats.ThmTemp1TotalTime) // seconds
mx["device_"+device+"_thm_temp2_total_time"] = parseValue(stats.ThmTemp2TotalTime) // seconds
mx["device_"+device+"_critical_warning_available_spare"] = boolToInt(parseValue(stats.CriticalWarning)&1 != 0)
mx["device_"+device+"_critical_warning_temp_threshold"] = boolToInt(parseValue(stats.CriticalWarning)&(1<<1) != 0)
mx["device_"+device+"_critical_warning_nvm_subsystem_reliability"] = boolToInt(parseValue(stats.CriticalWarning)&(1<<2) != 0)
mx["device_"+device+"_critical_warning_read_only"] = boolToInt(parseValue(stats.CriticalWarning)&(1<<3) != 0)
mx["device_"+device+"_critical_warning_volatile_mem_backup_failed"] = boolToInt(parseValue(stats.CriticalWarning)&(1<<4) != 0)
mx["device_"+device+"_critical_warning_persistent_memory_read_only"] = boolToInt(parseValue(stats.CriticalWarning)&(1<<5) != 0)
return nil
}
func (n *NVMe) listNVMeDevices() error {
devices, err := n.exec.list()
if err != nil {
return fmt.Errorf("exec nvme list: %v", err)
}
seen := make(map[string]bool)
for _, v := range devices.Devices {
device := extractDeviceFromPath(v.DevicePath)
seen[device] = true
if !n.devicePaths[v.DevicePath] {
n.devicePaths[v.DevicePath] = true
n.addDeviceCharts(device)
}
}
for path := range n.devicePaths {
device := extractDeviceFromPath(path)
if !seen[device] {
delete(n.devicePaths, device)
n.removeDeviceCharts(device)
}
}
return nil
}
func extractDeviceFromPath(devicePath string) string {
_, name := filepath.Split(devicePath)
return name
}
func boolToInt(v bool) int64 {
if v {
return 1
}
return 0
}
func parseValue(s nvmeNumber) int64 {
v, _ := strconv.ParseFloat(string(s), 64)
return int64(v)
}
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