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package main
import (
"context"
"fmt"
"os"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
var (
checkpointDescription = `
podman container checkpoint
Checkpoints one or more running containers. The container name or ID can be used.
`
checkpointFlags = []cli.Flag{
cli.BoolFlag{
Name: "keep, k",
Usage: "keep all temporary checkpoint files",
},
cli.BoolFlag{
Name: "leave-running, R",
Usage: "leave the container running after writing checkpoint to disk",
},
cli.BoolFlag{
Name: "tcp-established",
Usage: "checkpoint a container with established TCP connections",
},
cli.BoolFlag{
Name: "all, a",
Usage: "checkpoint all running containers",
},
LatestFlag,
}
checkpointCommand = cli.Command{
Name: "checkpoint",
Usage: "Checkpoints one or more containers",
Description: checkpointDescription,
Flags: sortFlags(checkpointFlags),
Action: checkpointCmd,
ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]",
}
)
func checkpointCmd(c *cli.Context) error {
if rootless.IsRootless() {
return errors.New("checkpointing a container requires root")
}
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
options := libpod.ContainerCheckpointOptions{
Keep: c.Bool("keep"),
KeepRunning: c.Bool("leave-running"),
TCPEstablished: c.Bool("tcp-established"),
}
if err := checkAllAndLatest(c); err != nil {
return err
}
containers, lastError := getAllOrLatestContainers(c, runtime, libpod.ContainerStateRunning, "running")
for _, ctr := range containers {
if err = ctr.Checkpoint(context.TODO(), options); err != nil {
if lastError != nil {
fmt.Fprintln(os.Stderr, lastError)
}
lastError = errors.Wrapf(err, "failed to checkpoint container %v", ctr.ID())
} else {
fmt.Println(ctr.ID())
}
}
return lastError
}
|
