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authorOpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com>2018-10-04 12:34:49 -0700
committerGitHub <noreply@github.com>2018-10-04 12:34:49 -0700
commit06a959f74ab4f23d5a789d03de4b2b73a3d53dc6 (patch)
tree42e0437cd91aae4b53cd769401d7becd2309feb6 /cmd
parent3c31e176c7dfce3c86a45ff4750f740a5f8f9321 (diff)
parentdc987af0b0146ec5fd2026ca8db403806c3425df (diff)
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Merge pull request #469 from adrianreber/master
Add support to checkpoint/restore containers
Diffstat (limited to 'cmd')
-rw-r--r--cmd/podman/checkpoint.go73
-rw-r--r--cmd/podman/container.go2
-rw-r--r--cmd/podman/restore.go73
3 files changed, 148 insertions, 0 deletions
diff --git a/cmd/podman/checkpoint.go b/cmd/podman/checkpoint.go
new file mode 100644
index 000000000..cbbbcd740
--- /dev/null
+++ b/cmd/podman/checkpoint.go
@@ -0,0 +1,73 @@
+package main
+
+import (
+ "context"
+ "fmt"
+ "os"
+
+ "github.com/containers/libpod/cmd/podman/libpodruntime"
+ "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",
+ },
+ }
+ checkpointCommand = cli.Command{
+ Name: "checkpoint",
+ Usage: "Checkpoints one or more containers",
+ Description: checkpointDescription,
+ Flags: 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)
+
+ keep := c.Bool("keep")
+ args := c.Args()
+ if len(args) < 1 {
+ return errors.Errorf("you must provide at least one container name or id")
+ }
+
+ var lastError error
+ for _, arg := range args {
+ ctr, err := runtime.LookupContainer(arg)
+ if err != nil {
+ if lastError != nil {
+ fmt.Fprintln(os.Stderr, lastError)
+ }
+ lastError = errors.Wrapf(err, "error looking up container %q", arg)
+ continue
+ }
+ if err = ctr.Checkpoint(context.TODO(), keep); 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
+}
diff --git a/cmd/podman/container.go b/cmd/podman/container.go
index 82c1c824d..ff634278f 100644
--- a/cmd/podman/container.go
+++ b/cmd/podman/container.go
@@ -7,6 +7,7 @@ import (
var (
subCommands = []cli.Command{
attachCommand,
+ checkpointCommand,
cleanupCommand,
commitCommand,
createCommand,
@@ -23,6 +24,7 @@ var (
// pruneCommand,
refreshCommand,
restartCommand,
+ restoreCommand,
rmCommand,
runCommand,
runlabelCommand,
diff --git a/cmd/podman/restore.go b/cmd/podman/restore.go
new file mode 100644
index 000000000..43ef87ca2
--- /dev/null
+++ b/cmd/podman/restore.go
@@ -0,0 +1,73 @@
+package main
+
+import (
+ "context"
+ "fmt"
+ "os"
+
+ "github.com/containers/libpod/cmd/podman/libpodruntime"
+ "github.com/containers/libpod/pkg/rootless"
+ "github.com/pkg/errors"
+ "github.com/urfave/cli"
+)
+
+var (
+ restoreDescription = `
+ podman container restore
+
+ Restores a container from a checkpoint. The container name or ID can be used.
+`
+ restoreFlags = []cli.Flag{
+ cli.BoolFlag{
+ Name: "keep, k",
+ Usage: "keep all temporary checkpoint files",
+ },
+ }
+ restoreCommand = cli.Command{
+ Name: "restore",
+ Usage: "Restores one or more containers from a checkpoint",
+ Description: restoreDescription,
+ Flags: restoreFlags,
+ Action: restoreCmd,
+ ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]",
+ }
+)
+
+func restoreCmd(c *cli.Context) error {
+ if rootless.IsRootless() {
+ return errors.New("restoring a container requires root")
+ }
+
+ runtime, err := libpodruntime.GetRuntime(c)
+ if err != nil {
+ return errors.Wrapf(err, "could not get runtime")
+ }
+ defer runtime.Shutdown(false)
+
+ keep := c.Bool("keep")
+ args := c.Args()
+ if len(args) < 1 {
+ return errors.Errorf("you must provide at least one container name or id")
+ }
+
+ var lastError error
+ for _, arg := range args {
+ ctr, err := runtime.LookupContainer(arg)
+ if err != nil {
+ if lastError != nil {
+ fmt.Fprintln(os.Stderr, lastError)
+ }
+ lastError = errors.Wrapf(err, "error looking up container %q", arg)
+ continue
+ }
+ if err = ctr.Restore(context.TODO(), keep); err != nil {
+ if lastError != nil {
+ fmt.Fprintln(os.Stderr, lastError)
+ }
+ lastError = errors.Wrapf(err, "failed to restore container %v", ctr.ID())
+ } else {
+ fmt.Println(ctr.ID())
+ }
+ }
+ return lastError
+}