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Add a collector for NVMes to expose the firmware versions. This requires procfs >= 0.7.0. Fixes #1891 Signed-off-by: Benjamin Drung <benjamin.drung@ionos.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // Copyright 2021 The Prometheus Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| // +build linux | ||
| // +build !nonvme | ||
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| package collector | ||
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| import ( | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
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| "github.com/go-kit/log" | ||
| "github.com/go-kit/log/level" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/procfs/sysfs" | ||
| ) | ||
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| type nvmeCollector struct { | ||
| fs sysfs.FS | ||
| logger log.Logger | ||
| } | ||
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| func init() { | ||
| registerCollector("nvme", defaultEnabled, NewNVMeCollector) | ||
| } | ||
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| // NewNVMeCollector returns a new Collector exposing NVMe stats. | ||
| func NewNVMeCollector(logger log.Logger) (Collector, error) { | ||
| fs, err := sysfs.NewFS(*sysPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to open sysfs: %w", err) | ||
| } | ||
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| return &nvmeCollector{ | ||
| fs: fs, | ||
| logger: logger, | ||
| }, nil | ||
| } | ||
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| func (c *nvmeCollector) Update(ch chan<- prometheus.Metric) error { | ||
| devices, err := c.fs.NVMeClass() | ||
| if err != nil { | ||
| if errors.Is(err, os.ErrNotExist) { | ||
| level.Debug(c.logger).Log("msg", "nvme statistics not found, skipping") | ||
| return ErrNoData | ||
| } | ||
| return fmt.Errorf("error obtaining NVMe class info: %w", err) | ||
| } | ||
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| 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, | ||
| ) | ||
| infoValue := 1.0 | ||
| ch <- prometheus.MustNewConstMetric(infoDesc, prometheus.GaugeValue, infoValue, device.Name, device.FirmwareRevision, device.Model, device.Serial, device.State) | ||
| } | ||
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| return nil | ||
| } |
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