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// Copyright 2018 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.
//go:build !nozfs
// +build !nozfs
package collector
import (
"log/slog"
"strings"
"github.com/illumos/go-kstat"
"github.com/prometheus/client_golang/prometheus"
)
type zfsCollector struct {
abdstatsLinearCount *prometheus.Desc
abdstatsLinearDataSize *prometheus.Desc
abdstatsScatterChunkWaste *prometheus.Desc
abdstatsScatterCount *prometheus.Desc
abdstatsScatterDataSize *prometheus.Desc
abdstatsStructSize *prometheus.Desc
arcstatsAnonSize *prometheus.Desc
arcstatsC *prometheus.Desc
arcstatsCMax *prometheus.Desc
arcstatsCMin *prometheus.Desc
arcstatsDataSize *prometheus.Desc
arcstatsDemandDataHits *prometheus.Desc
arcstatsDemandDataMisses *prometheus.Desc
arcstatsDemandMetadataHits *prometheus.Desc
arcstatsDemandMetadataMisses *prometheus.Desc
arcstatsHeaderSize *prometheus.Desc
arcstatsHits *prometheus.Desc
arcstatsMisses *prometheus.Desc
arcstatsMFUGhostHits *prometheus.Desc
arcstatsMFUGhostSize *prometheus.Desc
arcstatsMFUSize *prometheus.Desc
arcstatsMRUGhostHits *prometheus.Desc
arcstatsMRUGhostSize *prometheus.Desc
arcstatsMRUSize *prometheus.Desc
arcstatsOtherSize *prometheus.Desc
arcstatsP *prometheus.Desc
arcstatsSize *prometheus.Desc
zfetchstatsHits *prometheus.Desc
zfetchstatsMisses *prometheus.Desc
logger *slog.Logger
}
const (
zfsCollectorSubsystem = "zfs"
)
func NewZFSCollector(logger *slog.Logger) (Collector, error) {
return &zfsCollector{
abdstatsLinearCount: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_linear_count_total"),
"ZFS ARC buffer data linear count", nil, nil,
),
abdstatsLinearDataSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_linear_data_bytes"),
"ZFS ARC buffer data linear data size", nil, nil,
),
abdstatsScatterChunkWaste: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_chunk_waste_bytes"),
"ZFS ARC buffer data scatter chunk waste", nil, nil,
),
abdstatsScatterCount: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_count_total"),
"ZFS ARC buffer data scatter count", nil, nil,
),
abdstatsScatterDataSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_scatter_data_bytes"),
"ZFS ARC buffer data scatter data size", nil, nil,
),
abdstatsStructSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "abdstats_struct_bytes"),
"ZFS ARC buffer data struct size", nil, nil,
),
arcstatsAnonSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_anon_bytes"),
"ZFS ARC anon size", nil, nil,
),
arcstatsC: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_bytes"),
"ZFS ARC target size", nil, nil,
),
arcstatsCMax: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_max_bytes"),
"ZFS ARC maximum size", nil, nil,
),
arcstatsCMin: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_c_min_bytes"),
"ZFS ARC minimum size", nil, nil,
),
arcstatsDataSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_data_bytes"),
"ZFS ARC data size", nil, nil,
),
arcstatsDemandDataHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_data_hits_total"),
"ZFS ARC demand data hits", nil, nil,
),
arcstatsDemandDataMisses: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_data_misses_total"),
"ZFS ARC demand data misses", nil, nil,
),
arcstatsDemandMetadataHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_metadata_hits_total"),
"ZFS ARC demand metadata hits", nil, nil,
),
arcstatsDemandMetadataMisses: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_demand_metadata_misses_total"),
"ZFS ARC demand metadata misses", nil, nil,
),
arcstatsHeaderSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_hdr_bytes"),
"ZFS ARC header size", nil, nil,
),
arcstatsHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_hits_total"),
"ZFS ARC hits", nil, nil,
),
arcstatsMisses: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_misses_total"),
"ZFS ARC misses", nil, nil,
),
arcstatsMFUGhostHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_ghost_hits_total"),
"ZFS ARC MFU ghost hits", nil, nil,
),
arcstatsMFUGhostSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_ghost_size"),
"ZFS ARC MFU ghost size", nil, nil,
),
arcstatsMFUSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mfu_bytes"),
"ZFS ARC MFU size", nil, nil,
),
arcstatsMRUGhostHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_ghost_hits_total"),
"ZFS ARC MRU ghost hits", nil, nil,
),
arcstatsMRUGhostSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_ghost_bytes"),
"ZFS ARC MRU ghost size", nil, nil,
),
arcstatsMRUSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_mru_bytes"),
"ZFS ARC MRU size", nil, nil,
),
arcstatsOtherSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_other_bytes"),
"ZFS ARC other size", nil, nil,
),
arcstatsP: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_p_bytes"),
"ZFS ARC MRU target size", nil, nil,
),
arcstatsSize: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "arcstats_size_bytes"),
"ZFS ARC size", nil, nil,
),
zfetchstatsHits: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "zfetchstats_hits_total"),
"ZFS cache fetch hits", nil, nil,
),
zfetchstatsMisses: prometheus.NewDesc(
prometheus.BuildFQName(namespace, zfsCollectorSubsystem, "zfetchstats_misses_total"),
"ZFS cache fetch misses", nil, nil,
),
logger: logger,
}, nil
}
func (c *zfsCollector) updateZfsAbdStats(ch chan<- prometheus.Metric) error {
var metricType prometheus.ValueType
tok, err := kstat.Open()
if err != nil {
return err
}
defer tok.Close()
ksZFSInfo, err := tok.Lookup("zfs", 0, "abdstats")
if err != nil {
return err
}
for k, v := range map[string]*prometheus.Desc{
"linear_cnt": c.abdstatsLinearCount,
"linear_data_size": c.abdstatsLinearDataSize,
"scatter_chunk_waste": c.abdstatsScatterChunkWaste,
"scatter_cnt": c.abdstatsScatterCount,
"scatter_data_size": c.abdstatsScatterDataSize,
"struct_size": c.abdstatsStructSize,
} {
ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
if err != nil {
return err
}
if strings.HasSuffix(k, "_cnt") {
metricType = prometheus.CounterValue
} else {
metricType = prometheus.GaugeValue
}
ch <- prometheus.MustNewConstMetric(
v,
metricType,
float64(ksZFSInfoValue.UintVal),
)
}
return nil
}
func (c *zfsCollector) updateZfsArcStats(ch chan<- prometheus.Metric) error {
var metricType prometheus.ValueType
tok, err := kstat.Open()
if err != nil {
return err
}
defer tok.Close()
ksZFSInfo, err := tok.Lookup("zfs", 0, "arcstats")
if err != nil {
return err
}
for k, v := range map[string]*prometheus.Desc{
"anon_size": c.arcstatsAnonSize,
"c": c.arcstatsC,
"c_max": c.arcstatsCMax,
"c_min": c.arcstatsCMin,
"data_size": c.arcstatsDataSize,
"demand_data_hits": c.arcstatsDemandDataHits,
"demand_data_misses": c.arcstatsDemandDataMisses,
"demand_metadata_hits": c.arcstatsDemandMetadataHits,
"demand_metadata_misses": c.arcstatsDemandMetadataMisses,
"hdr_size": c.arcstatsHeaderSize,
"hits": c.arcstatsHits,
"misses": c.arcstatsMisses,
"mfu_ghost_hits": c.arcstatsMFUGhostHits,
"mfu_ghost_size": c.arcstatsMFUGhostSize,
"mfu_size": c.arcstatsMFUSize,
"mru_ghost_hits": c.arcstatsMRUGhostHits,
"mru_ghost_size": c.arcstatsMRUGhostSize,
"mru_size": c.arcstatsMRUSize,
"other_size": c.arcstatsOtherSize,
"p": c.arcstatsP,
"size": c.arcstatsSize,
} {
ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
if err != nil {
return err
}
if strings.HasSuffix(k, "_hits") || strings.HasSuffix(k, "_misses") {
metricType = prometheus.CounterValue
} else {
metricType = prometheus.GaugeValue
}
ch <- prometheus.MustNewConstMetric(
v,
metricType,
float64(ksZFSInfoValue.UintVal),
)
}
return nil
}
func (c *zfsCollector) updateZfsFetchStats(ch chan<- prometheus.Metric) error {
tok, err := kstat.Open()
if err != nil {
return err
}
defer tok.Close()
ksZFSInfo, err := tok.Lookup("zfs", 0, "zfetchstats")
if err != nil {
return err
}
for k, v := range map[string]*prometheus.Desc{
"hits": c.zfetchstatsHits,
"misses": c.zfetchstatsMisses,
} {
ksZFSInfoValue, err := ksZFSInfo.GetNamed(k)
if err != nil {
return err
}
ch <- prometheus.MustNewConstMetric(
v,
prometheus.CounterValue,
float64(ksZFSInfoValue.UintVal),
)
}
return nil
}
func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
if err := c.updateZfsAbdStats(ch); err != nil {
return err
}
if err := c.updateZfsArcStats(ch); err != nil {
return err
}
if err := c.updateZfsFetchStats(ch); err != nil {
return err
}
return nil
}
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