1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
// Copyright 2015 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.
// +build !nofilesystem
package collector
import (
"github.com/go-kit/kit/log/level"
"golang.org/x/sys/unix"
)
const (
defIgnoredMountPoints = "^/(dev)($|/)"
defIgnoredFSTypes = "^devfs$"
readOnly = 0x1 // MNT_RDONLY
noWait = 0x2 // MNT_NOWAIT
)
// Expose filesystem fullness.
func (c *filesystemCollector) GetStats() ([]filesystemStats, error) {
n, err := unix.Getfsstat(nil, noWait)
if err != nil {
return nil, err
}
buf := make([]unix.Statfs_t, n)
_, err = unix.Getfsstat(buf, noWait)
if err != nil {
return nil, err
}
stats := []filesystemStats{}
for _, fs := range buf {
mountpoint := bytesToString(fs.Mntonname[:])
if c.ignoredMountPointsPattern.MatchString(mountpoint) {
level.Debug(c.logger).Log("msg", "Ignoring mount point", "mountpoint", mountpoint)
continue
}
device := bytesToString(fs.Mntfromname[:])
fstype := bytesToString(fs.Fstypename[:])
if c.ignoredFSTypesPattern.MatchString(fstype) {
level.Debug(c.logger).Log("msg", "Ignoring fs type", "type", fstype)
continue
}
var ro float64
if (fs.Flags & readOnly) != 0 {
ro = 1
}
stats = append(stats, filesystemStats{
labels: filesystemLabels{
device: device,
mountPoint: rootfsStripPrefix(mountpoint),
fsType: fstype,
},
size: float64(fs.Blocks) * float64(fs.Bsize),
free: float64(fs.Bfree) * float64(fs.Bsize),
avail: float64(fs.Bavail) * float64(fs.Bsize),
files: float64(fs.Files),
filesFree: float64(fs.Ffree),
ro: ro,
})
}
return stats, nil
}
|
