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Merge pull request #568 from mdlayher/xfs-init
Initial XFS collector
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,24 @@ | ||
| extent_alloc 1 872 0 0 | ||
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| debug 0 |
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| @@ -0,0 +1,140 @@ | ||
| // Copyright 2017 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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| package collector | ||
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||
| import ( | ||
| "fmt" | ||
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| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/procfs/sysfs" | ||
| "github.com/prometheus/procfs/xfs" | ||
| ) | ||
|
|
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| // An xfsCollector is a Collector which gathers metrics from XFS filesystems. | ||
| type xfsCollector struct { | ||
| fs sysfs.FS | ||
| } | ||
|
|
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| func init() { | ||
| Factories["xfs"] = NewXFSCollector | ||
| } | ||
|
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| // NewXFSCollector returns a new Collector exposing XFS statistics. | ||
| func NewXFSCollector() (Collector, error) { | ||
| fs, err := sysfs.NewFS(*sysPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to open sysfs: %v", err) | ||
| } | ||
|
|
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| return &xfsCollector{ | ||
| fs: fs, | ||
| }, nil | ||
| } | ||
|
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| // Update implements Collector. | ||
| func (c *xfsCollector) Update(ch chan<- prometheus.Metric) error { | ||
| stats, err := c.fs.XFSStats() | ||
| if err != nil { | ||
| return fmt.Errorf("failed to retrieve XFS stats: %v", err) | ||
| } | ||
|
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| for _, s := range stats { | ||
| c.updateXFSStats(ch, s) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
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| // updateXFSStats collects statistics for a single XFS filesystem. | ||
| func (c *xfsCollector) updateXFSStats(ch chan<- prometheus.Metric, s *xfs.Stats) { | ||
| const ( | ||
| subsystem = "xfs" | ||
| ) | ||
|
|
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| var ( | ||
| labels = []string{"device"} | ||
| ) | ||
|
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| // Metric names and descriptions are sourced from: | ||
| // http://xfs.org/index.php/Runtime_Stats. | ||
| // | ||
| // Each metric has a name that roughly follows the pattern of | ||
| // "node_xfs_category_value_total", using the categories and value names | ||
| // found on the XFS wiki. | ||
| // | ||
| // Note that statistics for more than one internal B-tree are measured, | ||
| // and as such, each one must be differentiated by name. | ||
| metrics := []struct { | ||
| name string | ||
| desc string | ||
| value float64 | ||
| }{ | ||
| { | ||
| name: "extent_allocation_extents_allocated_total", | ||
| desc: "Number of extents allocated for a filesystem.", | ||
| value: float64(s.ExtentAllocation.ExtentsAllocated), | ||
| }, | ||
| { | ||
| name: "extent_allocation_blocks_allocated_total", | ||
| desc: "Number of blocks allocated for a filesystem.", | ||
| value: float64(s.ExtentAllocation.BlocksAllocated), | ||
| }, | ||
| { | ||
| name: "extent_allocation_extents_freed_total", | ||
| desc: "Number of extents freed for a filesystem.", | ||
| value: float64(s.ExtentAllocation.ExtentsFreed), | ||
| }, | ||
| { | ||
| name: "extent_allocation_blocks_freed_total", | ||
| desc: "Number of blocks freed for a filesystem.", | ||
| value: float64(s.ExtentAllocation.BlocksFreed), | ||
| }, | ||
| { | ||
| name: "allocation_btree_lookups_total", | ||
| desc: "Number of allocation B-tree lookups for a filesystem.", | ||
| value: float64(s.AllocationBTree.Lookups), | ||
| }, | ||
| { | ||
| name: "allocation_btree_compares_total", | ||
| desc: "Number of allocation B-tree compares for a filesystem.", | ||
| value: float64(s.AllocationBTree.Compares), | ||
| }, | ||
| { | ||
| name: "allocation_btree_records_inserted_total", | ||
| desc: "Number of allocation B-tree records inserted for a filesystem.", | ||
| value: float64(s.AllocationBTree.RecordsInserted), | ||
| }, | ||
| { | ||
| name: "allocation_btree_records_deleted_total", | ||
| desc: "Number of allocation B-tree records deleted for a filesystem.", | ||
| value: float64(s.AllocationBTree.RecordsDeleted), | ||
| }, | ||
| } | ||
|
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| for _, m := range metrics { | ||
| desc := prometheus.NewDesc( | ||
| prometheus.BuildFQName(Namespace, subsystem, m.name), | ||
| m.desc, | ||
| labels, | ||
| nil, | ||
| ) | ||
|
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| ch <- prometheus.MustNewConstMetric( | ||
| desc, | ||
| prometheus.CounterValue, | ||
| m.value, | ||
| s.Name, | ||
| ) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
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@@ -28,6 +28,7 @@ collectors=$(cat << COLLECTORS | |
| bonding | ||
| megacli | ||
| wifi | ||
| xfs | ||
| zfs | ||
| COLLECTORS | ||
| ) | ||
|
|
||
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