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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
//go:build linux
// +build linux
package specgen
import (
"fmt"
spec "github.com/opencontainers/runtime-spec/specs-go"
"golang.org/x/sys/unix"
)
// FinishThrottleDevices takes the temporary representation of the throttle
// devices in the specgen and looks up the major and major minors. it then
// sets the throttle devices proper in the specgen
func FinishThrottleDevices(s *SpecGenerator) error {
if s.ResourceLimits == nil {
s.ResourceLimits = &spec.LinuxResources{}
}
if bps := s.ThrottleReadBpsDevice; len(bps) > 0 {
if s.ResourceLimits.BlockIO == nil {
s.ResourceLimits.BlockIO = &spec.LinuxBlockIO{}
}
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return fmt.Errorf("could not parse throttle device at %s: %w", k, err)
}
v.Major = (int64(unix.Major(uint64(statT.Rdev)))) //nolint: unconvert
v.Minor = (int64(unix.Minor(uint64(statT.Rdev)))) //nolint: unconvert
if s.ResourceLimits.BlockIO == nil {
s.ResourceLimits.BlockIO = new(spec.LinuxBlockIO)
}
s.ResourceLimits.BlockIO.ThrottleReadBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleReadBpsDevice, v)
}
}
if bps := s.ThrottleWriteBpsDevice; len(bps) > 0 {
if s.ResourceLimits.BlockIO == nil {
s.ResourceLimits.BlockIO = &spec.LinuxBlockIO{}
}
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return fmt.Errorf("could not parse throttle device at %s: %w", k, err)
}
v.Major = (int64(unix.Major(uint64(statT.Rdev)))) //nolint: unconvert
v.Minor = (int64(unix.Minor(uint64(statT.Rdev)))) //nolint: unconvert
s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice, v)
}
}
if iops := s.ThrottleReadIOPSDevice; len(iops) > 0 {
if s.ResourceLimits.BlockIO == nil {
s.ResourceLimits.BlockIO = &spec.LinuxBlockIO{}
}
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return fmt.Errorf("could not parse throttle device at %s: %w", k, err)
}
v.Major = (int64(unix.Major(uint64(statT.Rdev)))) //nolint: unconvert
v.Minor = (int64(unix.Minor(uint64(statT.Rdev)))) //nolint: unconvert
s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice, v)
}
}
if iops := s.ThrottleWriteIOPSDevice; len(iops) > 0 {
if s.ResourceLimits.BlockIO == nil {
s.ResourceLimits.BlockIO = &spec.LinuxBlockIO{}
}
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return fmt.Errorf("could not parse throttle device at %s: %w", k, err)
}
v.Major = (int64(unix.Major(uint64(statT.Rdev)))) //nolint: unconvert
v.Minor = (int64(unix.Minor(uint64(statT.Rdev)))) //nolint: unconvert
s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice, v)
}
}
return nil
}
func WeightDevices(specgen *SpecGenerator) error {
devs := []spec.LinuxWeightDevice{}
if specgen.ResourceLimits == nil {
specgen.ResourceLimits = &spec.LinuxResources{}
}
for k, v := range specgen.WeightDevice {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return fmt.Errorf("failed to inspect '%s' in --blkio-weight-device: %w", k, err)
}
dev := new(spec.LinuxWeightDevice)
dev.Major = (int64(unix.Major(uint64(statT.Rdev)))) //nolint: unconvert
dev.Minor = (int64(unix.Minor(uint64(statT.Rdev)))) //nolint: unconvert
dev.Weight = v.Weight
devs = append(devs, *dev)
if specgen.ResourceLimits.BlockIO == nil {
specgen.ResourceLimits.BlockIO = &spec.LinuxBlockIO{}
}
specgen.ResourceLimits.BlockIO.WeightDevice = devs
}
return nil
}
|
