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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
package main
import (
"fmt"
"github.com/checkpoint-restore/go-criu"
"github.com/checkpoint-restore/go-criu/rpc"
"github.com/golang/protobuf/proto"
"os"
"strconv"
)
// TestNfy struct
type TestNfy struct {
criu.NoNotify
}
// PreDump test function
func (c TestNfy) PreDump() error {
fmt.Printf("TEST PRE DUMP\n")
return nil
}
func doDump(c *criu.Criu, pidS string, imgDir string, pre bool, prevImg string) error {
fmt.Printf("Dumping\n")
pid, _ := strconv.Atoi(pidS)
img, err := os.Open(imgDir)
if err != nil {
return fmt.Errorf("can't open image dir (%s)", err)
}
defer img.Close()
opts := rpc.CriuOpts{
Pid: proto.Int32(int32(pid)),
ImagesDirFd: proto.Int32(int32(img.Fd())),
LogLevel: proto.Int32(4),
LogFile: proto.String("dump.log"),
}
if prevImg != "" {
opts.ParentImg = proto.String(prevImg)
opts.TrackMem = proto.Bool(true)
}
if pre {
err = c.PreDump(opts, TestNfy{})
} else {
err = c.Dump(opts, TestNfy{})
}
if err != nil {
return fmt.Errorf("dump fail (%s)", err)
}
return nil
}
// Usage: test $act $pid $images_dir
func main() {
c := criu.MakeCriu()
// Read out CRIU version
version, err := c.GetCriuVersion()
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("CRIU version", version)
// Check if version at least 3.2
result, err := c.IsCriuAtLeast(30200)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
if !result {
fmt.Println("CRIU too old")
os.Exit(1)
}
act := os.Args[1]
switch act {
case "dump":
err := doDump(c, os.Args[2], os.Args[3], false, "")
if err != nil {
fmt.Print(err)
os.Exit(1)
}
case "dump2":
err := c.Prepare()
if err != nil {
fmt.Print(err)
os.Exit(1)
}
err = doDump(c, os.Args[2], os.Args[3]+"/pre", true, "")
if err != nil {
fmt.Printf("pre-dump failed")
fmt.Print(err)
os.Exit(1)
}
err = doDump(c, os.Args[2], os.Args[3], false, "./pre")
if err != nil {
fmt.Printf("dump failed")
fmt.Print(err)
os.Exit(1)
}
c.Cleanup()
case "restore":
fmt.Printf("Restoring\n")
img, err := os.Open(os.Args[2])
if err != nil {
fmt.Printf("can't open image dir")
os.Exit(1)
}
defer img.Close()
opts := rpc.CriuOpts{
ImagesDirFd: proto.Int32(int32(img.Fd())),
LogLevel: proto.Int32(4),
LogFile: proto.String("restore.log"),
}
err = c.Restore(opts, nil)
if err != nil {
fmt.Printf("Error:")
fmt.Print(err)
fmt.Printf("\n")
os.Exit(1)
}
default:
fmt.Printf("unknown action\n")
os.Exit(1)
}
fmt.Printf("Success\n")
}
|
