67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
// +build linux
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/codegangsta/cli"
|
|
"github.com/opencontainers/runc/libcontainer"
|
|
)
|
|
|
|
var checkpointCommand = cli.Command{
|
|
Name: "checkpoint",
|
|
Usage: "checkpoint a running container",
|
|
Flags: []cli.Flag{
|
|
cli.StringFlag{Name: "image-path", Value: "", Usage: "path for saving criu image files"},
|
|
cli.StringFlag{Name: "work-path", Value: "", Usage: "path for saving work files and logs"},
|
|
cli.BoolFlag{Name: "leave-running", Usage: "leave the process running after checkpointing"},
|
|
cli.BoolFlag{Name: "tcp-established", Usage: "allow open tcp connections"},
|
|
cli.BoolFlag{Name: "ext-unix-sk", Usage: "allow external unix sockets"},
|
|
cli.BoolFlag{Name: "shell-job", Usage: "allow shell jobs"},
|
|
cli.StringFlag{Name: "page-server", Value: "", Usage: "ADDRESS:PORT of the page server"},
|
|
cli.BoolFlag{Name: "file-locks", Usage: "handle file locks, for safety"},
|
|
},
|
|
Action: func(context *cli.Context) {
|
|
container, err := getContainer(context)
|
|
if err != nil {
|
|
fatal(err)
|
|
}
|
|
options := criuOptions(context)
|
|
// these are the mandatory criu options for a container
|
|
setPageServer(context, options)
|
|
if err := container.Checkpoint(options); err != nil {
|
|
fatal(err)
|
|
}
|
|
},
|
|
}
|
|
|
|
func getCheckpointImagePath(context *cli.Context) string {
|
|
imagePath := context.String("image-path")
|
|
if imagePath == "" {
|
|
imagePath = getDefaultImagePath(context)
|
|
}
|
|
return imagePath
|
|
}
|
|
|
|
func setPageServer(context *cli.Context, options *libcontainer.CriuOpts) {
|
|
// xxx following criu opts are optional
|
|
// The dump image can be sent to a criu page server
|
|
if psOpt := context.String("page-server"); psOpt != "" {
|
|
addressPort := strings.Split(psOpt, ":")
|
|
if len(addressPort) != 2 {
|
|
fatal(fmt.Errorf("Use --page-server ADDRESS:PORT to specify page server"))
|
|
}
|
|
port_int, err := strconv.Atoi(addressPort[1])
|
|
if err != nil {
|
|
fatal(fmt.Errorf("Invalid port number"))
|
|
}
|
|
options.PageServer = libcontainer.CriuPageServerInfo{
|
|
Address: addressPort[0],
|
|
Port: int32(port_int),
|
|
}
|
|
}
|
|
}
|