Ben Kochie
8 years ago
committed by
GitHub
11 changed files with 306 additions and 8 deletions
@ -0,0 +1,24 @@
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extent_alloc 1 872 0 0 |
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abt 0 0 0 0 |
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blk_map 61 29 1 1 1 91 0 |
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bmbt 0 0 0 0 |
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dir 3 2 1 52 |
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trans 4 40 0 |
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ig 5 1 0 4 0 0 1 |
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log 8 21 0 5821 4 |
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push_ail 44 0 1102 15 0 2 0 2 0 2 |
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xstrat 1 0 |
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rw 28 0 |
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attr 0 0 0 0 |
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icluster 2 2 2 |
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vnodes 4 0 0 0 1 1 1 0 |
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buf 22 25 14 0 0 8 0 8 8 |
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abtb2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 |
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abtc2 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 |
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bmbt2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
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ibt2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 |
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fibt2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 |
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rmapbt 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 |
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qm 0 0 0 0 0 0 0 0 |
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xpc 3571712 3568056 0 |
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debug 0 |
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@ -0,0 +1,140 @@
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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package collector |
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import ( |
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"fmt" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/prometheus/procfs/sysfs" |
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"github.com/prometheus/procfs/xfs" |
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) |
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// An xfsCollector is a Collector which gathers metrics from XFS filesystems.
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type xfsCollector struct { |
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fs sysfs.FS |
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} |
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func init() { |
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Factories["xfs"] = NewXFSCollector |
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} |
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// NewXFSCollector returns a new Collector exposing XFS statistics.
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func NewXFSCollector() (Collector, error) { |
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fs, err := sysfs.NewFS(*sysPath) |
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if err != nil { |
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return nil, fmt.Errorf("failed to open sysfs: %v", err) |
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} |
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return &xfsCollector{ |
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fs: fs, |
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}, nil |
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} |
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// Update implements Collector.
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func (c *xfsCollector) Update(ch chan<- prometheus.Metric) error { |
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stats, err := c.fs.XFSStats() |
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if err != nil { |
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return fmt.Errorf("failed to retrieve XFS stats: %v", err) |
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} |
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for _, s := range stats { |
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c.updateXFSStats(ch, s) |
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} |
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return nil |
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} |
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// updateXFSStats collects statistics for a single XFS filesystem.
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func (c *xfsCollector) updateXFSStats(ch chan<- prometheus.Metric, s *xfs.Stats) { |
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const ( |
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subsystem = "xfs" |
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) |
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var ( |
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labels = []string{"device"} |
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) |
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// Metric names and descriptions are sourced from:
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// http://xfs.org/index.php/Runtime_Stats.
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//
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// Each metric has a name that roughly follows the pattern of
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// "node_xfs_category_value_total", using the categories and value names
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// found on the XFS wiki.
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//
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// Note that statistics for more than one internal B-tree are measured,
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// and as such, each one must be differentiated by name.
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metrics := []struct { |
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name string |
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desc string |
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value float64 |
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}{ |
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{ |
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name: "extent_allocation_extents_allocated_total", |
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desc: "Number of extents allocated for a filesystem.", |
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value: float64(s.ExtentAllocation.ExtentsAllocated), |
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}, |
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{ |
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name: "extent_allocation_blocks_allocated_total", |
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desc: "Number of blocks allocated for a filesystem.", |
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value: float64(s.ExtentAllocation.BlocksAllocated), |
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}, |
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{ |
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name: "extent_allocation_extents_freed_total", |
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desc: "Number of extents freed for a filesystem.", |
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value: float64(s.ExtentAllocation.ExtentsFreed), |
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}, |
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{ |
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name: "extent_allocation_blocks_freed_total", |
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desc: "Number of blocks freed for a filesystem.", |
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value: float64(s.ExtentAllocation.BlocksFreed), |
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}, |
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{ |
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name: "allocation_btree_lookups_total", |
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desc: "Number of allocation B-tree lookups for a filesystem.", |
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value: float64(s.AllocationBTree.Lookups), |
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}, |
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{ |
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name: "allocation_btree_compares_total", |
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desc: "Number of allocation B-tree compares for a filesystem.", |
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value: float64(s.AllocationBTree.Compares), |
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}, |
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{ |
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name: "allocation_btree_records_inserted_total", |
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desc: "Number of allocation B-tree records inserted for a filesystem.", |
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value: float64(s.AllocationBTree.RecordsInserted), |
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}, |
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{ |
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name: "allocation_btree_records_deleted_total", |
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desc: "Number of allocation B-tree records deleted for a filesystem.", |
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value: float64(s.AllocationBTree.RecordsDeleted), |
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}, |
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} |
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for _, m := range metrics { |
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desc := prometheus.NewDesc( |
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prometheus.BuildFQName(Namespace, subsystem, m.name), |
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m.desc, |
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labels, |
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nil, |
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) |
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ch <- prometheus.MustNewConstMetric( |
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desc, |
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prometheus.CounterValue, |
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m.value, |
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s.Name, |
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) |
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} |
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} |
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@ -0,0 +1,16 @@
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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
|
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
|
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// distributed under the License is distributed on an "AS IS" BASIS,
|
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package sysfs provides functions to retrieve system and kernel metrics
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// from the pseudo-filesystem sys.
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package sysfs |
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@ -0,0 +1,82 @@
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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
|
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// distributed under the License is distributed on an "AS IS" BASIS,
|
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sysfs |
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import ( |
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"fmt" |
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"os" |
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"path/filepath" |
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"github.com/prometheus/procfs/xfs" |
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) |
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// FS represents the pseudo-filesystem sys, which provides an interface to
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// kernel data structures.
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type FS string |
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// DefaultMountPoint is the common mount point of the sys filesystem.
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const DefaultMountPoint = "/sys" |
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// NewFS returns a new FS mounted under the given mountPoint. It will error
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// if the mount point can't be read.
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func NewFS(mountPoint string) (FS, error) { |
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info, err := os.Stat(mountPoint) |
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if err != nil { |
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return "", fmt.Errorf("could not read %s: %s", mountPoint, err) |
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} |
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if !info.IsDir() { |
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return "", fmt.Errorf("mount point %s is not a directory", mountPoint) |
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} |
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return FS(mountPoint), nil |
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} |
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// Path returns the path of the given subsystem relative to the sys root.
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func (fs FS) Path(p ...string) string { |
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return filepath.Join(append([]string{string(fs)}, p...)...) |
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} |
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// XFSStats retrieves XFS filesystem runtime statistics for each mounted XFS
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// filesystem. Only available on kernel 4.4+. On older kernels, an empty
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// slice of *xfs.Stats will be returned.
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func (fs FS) XFSStats() ([]*xfs.Stats, error) { |
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matches, err := filepath.Glob(fs.Path("fs/xfs/*/stats/stats")) |
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if err != nil { |
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return nil, err |
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} |
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stats := make([]*xfs.Stats, 0, len(matches)) |
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for _, m := range matches { |
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f, err := os.Open(m) |
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if err != nil { |
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return nil, err |
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} |
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// "*" used in glob above indicates the name of the filesystem.
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name := filepath.Base(filepath.Dir(filepath.Dir(m))) |
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// File must be closed after parsing, regardless of success or
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// failure. Defer is not used because of the loop.
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s, err := xfs.ParseStats(f) |
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_ = f.Close() |
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if err != nil { |
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return nil, err |
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} |
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s.Name = name |
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stats = append(stats, s) |
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} |
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return stats, nil |
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} |
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