@ -26,8 +26,14 @@ import (
)
type nvmeCollector struct {
fs sysfs . FS
logger * slog . Logger
fs sysfs . FS
logger * slog . Logger
namespaceInfo * prometheus . Desc
namespaceCapacityBytes * prometheus . Desc
namespaceSizeBytes * prometheus . Desc
namespaceUsedBytes * prometheus . Desc
namespaceLogicalBlockSizeBytes * prometheus . Desc
info * prometheus . Desc
}
func init ( ) {
@ -41,9 +47,51 @@ func NewNVMeCollector(logger *slog.Logger) (Collector, error) {
return nil , fmt . Errorf ( "failed to open sysfs: %w" , err )
}
info := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "info" ) ,
"Non-numeric data from /sys/class/nvme/<device>, value is always 1." ,
[ ] string { "device" , "firmware_revision" , "model" , "serial" , "state" , "cntlid" } ,
nil ,
)
namespaceInfo := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "namespace_info" ) ,
"Information about NVMe namespaces. Value is always 1" ,
[ ] string { "device" , "nsid" , "ana_state" } , nil ,
)
namespaceCapacityBytes := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "namespace_capacity_bytes" ) ,
"Capacity of the NVMe namespace in bytes. Computed as namespace_size * namespace_logical_block_size" ,
[ ] string { "device" , "nsid" } , nil ,
)
namespaceSizeBytes := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "namespace_size_bytes" ) ,
"Size of the NVMe namespace in bytes. Available in /sys/class/nvme/<device>/<namespace>/size" ,
[ ] string { "device" , "nsid" } , nil ,
)
namespaceUsedBytes := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "namespace_used_bytes" ) ,
"Used space of the NVMe namespace in bytes. Available in /sys/class/nvme/<device>/<namespace>/nuse" ,
[ ] string { "device" , "nsid" } , nil ,
)
namespaceLogicalBlockSizeBytes := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "namespace_logical_block_size_bytes" ) ,
"Logical block size of the NVMe namespace in bytes. Usually 4Kb. Available in /sys/class/nvme/<device>/<namespace>/queue/logical_block_size" ,
[ ] string { "device" , "nsid" } , nil ,
)
return & nvmeCollector {
fs : fs ,
logger : logger ,
fs : fs ,
logger : logger ,
namespaceInfo : namespaceInfo ,
namespaceCapacityBytes : namespaceCapacityBytes ,
namespaceSizeBytes : namespaceSizeBytes ,
namespaceUsedBytes : namespaceUsedBytes ,
namespaceLogicalBlockSizeBytes : namespaceLogicalBlockSizeBytes ,
info : info ,
} , nil
}
@ -58,14 +106,67 @@ func (c *nvmeCollector) Update(ch chan<- prometheus.Metric) error {
}
for _ , device := range devices {
infoDesc := prometheus . NewDesc (
prometheus . BuildFQName ( namespace , "nvme" , "info" ) ,
"Non-numeric data from /sys/class/nvme/<device>, value is always 1." ,
[ ] string { "device" , "firmware_revision" , "model" , "serial" , "state" } ,
nil ,
// Export device-level metrics
ch <- prometheus . MustNewConstMetric (
c . info ,
prometheus . GaugeValue ,
1.0 ,
device . Name ,
device . FirmwareRevision ,
device . Model ,
device . Serial ,
device . State ,
device . ControllerID ,
)
infoValue := 1.0
ch <- prometheus . MustNewConstMetric ( infoDesc , prometheus . GaugeValue , infoValue , device . Name , device . FirmwareRevision , device . Model , device . Serial , device . State )
// Export namespace-level metrics
for _ , namespace := range device . Namespaces {
// Namespace info metric
ch <- prometheus . MustNewConstMetric (
c . namespaceInfo ,
prometheus . GaugeValue ,
1.0 ,
device . Name ,
namespace . ID ,
namespace . ANAState ,
)
// Namespace capacity in bytes
ch <- prometheus . MustNewConstMetric (
c . namespaceCapacityBytes ,
prometheus . GaugeValue ,
float64 ( namespace . CapacityBytes ) ,
device . Name ,
namespace . ID ,
)
// Namespace size in bytes
ch <- prometheus . MustNewConstMetric (
c . namespaceSizeBytes ,
prometheus . GaugeValue ,
float64 ( namespace . SizeBytes ) ,
device . Name ,
namespace . ID ,
)
// Namespace used space in bytes
ch <- prometheus . MustNewConstMetric (
c . namespaceUsedBytes ,
prometheus . GaugeValue ,
float64 ( namespace . UsedBytes ) ,
device . Name ,
namespace . ID ,
)
// Namespace logical block size in bytes
ch <- prometheus . MustNewConstMetric (
c . namespaceLogicalBlockSizeBytes ,
prometheus . GaugeValue ,
float64 ( namespace . LogicalBlockSize ) ,
device . Name ,
namespace . ID ,
)
}
}
return nil
Yurii Kondrakov
3 weeks ago
committed by