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Merge pull request #12257 from adrianreber/2021-11-10-print-stats

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Add optional checkpoint/restore statistics
This commit is contained in:
OpenShift Merge Robot
2021-11-15 16:17:37 +01:00
committed by GitHub
parent cca6df428c d28b39a90d
commit d40736fef1
16 changed files with 507 additions and 118 deletions
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34
cmd/podman/containers/checkpoint.go
View File

@ -4,6 +4,7 @@ import (
"context"
"fmt"
"strings"
"time"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v3/cmd/podman/common"
@ -40,6 +41,11 @@ var (
var checkpointOptions entities.CheckpointOptions
type checkpointStatistics struct {
PodmanDuration int64 `json:"podman_checkpoint_duration"`
ContainerStatistics []*entities.CheckpointReport `json:"container_statistics"`
}
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: checkpointCommand,
@ -63,11 +69,19 @@ func init() {
flags.StringP("compress", "c", "zstd", "Select compression algorithm (gzip, none, zstd) for checkpoint archive.")
_ = checkpointCommand.RegisterFlagCompletionFunc("compress", common.AutocompleteCheckpointCompressType)
flags.BoolVar(
&checkpointOptions.PrintStats,
"print-stats",
false,
"Display checkpoint statistics",
)
validate.AddLatestFlag(checkpointCommand, &checkpointOptions.Latest)
}
func checkpoint(cmd *cobra.Command, args []string) error {
var errs utils.OutputErrors
podmanStart := time.Now()
if cmd.Flags().Changed("compress") {
if checkpointOptions.Export == "" {
return errors.Errorf("--compress can only be used with --export")
@ -102,12 +116,30 @@ func checkpoint(cmd *cobra.Command, args []string) error {
if err != nil {
return err
}
podmanFinished := time.Now()
var statistics checkpointStatistics
for _, r := range responses {
if r.Err == nil {
fmt.Println(r.Id)
if checkpointOptions.PrintStats {
statistics.ContainerStatistics = append(statistics.ContainerStatistics, r)
} else {
fmt.Println(r.Id)
}
} else {
errs = append(errs, r.Err)
}
}
if checkpointOptions.PrintStats {
statistics.PodmanDuration = podmanFinished.Sub(podmanStart).Microseconds()
j, err := json.MarshalIndent(statistics, "", " ")
if err != nil {
return err
}
fmt.Println(string(j))
}
return errs.PrintErrors()
}

34
cmd/podman/containers/restore.go
View File

@ -3,6 +3,7 @@ package containers
import (
"context"
"fmt"
"time"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v3/cmd/podman/common"
@ -39,6 +40,11 @@ var (
var restoreOptions entities.RestoreOptions
type restoreStatistics struct {
PodmanDuration int64 `json:"podman_restore_duration"`
ContainerStatistics []*entities.RestoreReport `json:"container_statistics"`
}
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: restoreCommand,
@ -75,11 +81,19 @@ func init() {
flags.StringVar(&restoreOptions.Pod, "pod", "", "Restore container into existing Pod (only works with --import)")
_ = restoreCommand.RegisterFlagCompletionFunc("pod", common.AutocompletePodsRunning)
flags.BoolVar(
&restoreOptions.PrintStats,
"print-stats",
false,
"Display restore statistics",
)
validate.AddLatestFlag(restoreCommand, &restoreOptions.Latest)
}
func restore(cmd *cobra.Command, args []string) error {
var errs utils.OutputErrors
podmanStart := time.Now()
if rootless.IsRootless() {
return errors.New("restoring a container requires root")
}
@ -132,12 +146,30 @@ func restore(cmd *cobra.Command, args []string) error {
if err != nil {
return err
}
podmanFinished := time.Now()
var statistics restoreStatistics
for _, r := range responses {
if r.Err == nil {
fmt.Println(r.Id)
if restoreOptions.PrintStats {
statistics.ContainerStatistics = append(statistics.ContainerStatistics, r)
} else {
fmt.Println(r.Id)
}
} else {
errs = append(errs, r.Err)
}
}
if restoreOptions.PrintStats {
statistics.PodmanDuration = podmanFinished.Sub(podmanStart).Microseconds()
j, err := json.MarshalIndent(statistics, "", " ")
if err != nil {
return err
}
fmt.Println(string(j))
}
return errs.PrintErrors()
}

36
docs/source/markdown/podman-container-checkpoint.1.md
View File

@ -68,6 +68,40 @@ Dump the *container's* memory information only, leaving the *container* running.
operations will supersede prior dumps. It only works on `runc 1.0-rc3` or `higher`.\
The default is **false**.
#### **--print-stats**
Print out statistics about checkpointing the container(s). The output is
rendered in a JSON array and contains information about how much time different
checkpoint operations required. Many of the checkpoint statistics are created
by CRIU and just passed through to Podman. The following information is provided
in the JSON array:
- **podman_checkpoint_duration**: Overall time (in microseconds) needed to create
all checkpoints.
- **runtime_checkpoint_duration**: Time (in microseconds) the container runtime
needed to create the checkpoint.
- **freezing_time**: Time (in microseconds) CRIU needed to pause (freeze) all
processes in the container (measured by CRIU).
- **frozen_time**: Time (in microseconds) all processes in the container were
paused (measured by CRIU).
- **memdump_time**: Time (in microseconds) needed to extract all required memory
pages from all container processes (measured by CRIU).
- **memwrite_time**: Time (in microseconds) needed to write all required memory
pages to the corresponding checkpoint image files (measured by CRIU).
- **pages_scanned**: Number of memory pages scanned to determine if they need
to be checkpointed (measured by CRIU).
- **pages_written**: Number of memory pages actually written to the checkpoint
image files (measured by CRIU).
The default is **false**.
#### **--tcp-established**
Checkpoint a *container* with established TCP connections. If the checkpoint
@ -106,7 +140,7 @@ Dump the container's memory information of the latest container into an archive
```
## SEE ALSO
**[podman(1)](podman.1.md)**, **[podman-container-restore(1)](podman-container-restore.1.md)**
**[podman(1)](podman.1.md)**, **[podman-container-restore(1)](podman-container-restore.1.md)**, **criu(8)**
## HISTORY
September 2018, Originally compiled by Adrian Reber <areber@redhat.com>

26
docs/source/markdown/podman-container-restore.1.md
View File

@ -102,6 +102,30 @@ from (see **[podman pod create --share](podman-pod-create.1.md#--share)**).
This option requires at least CRIU 3.16.
#### **--print-stats**
Print out statistics about restoring the container(s). The output is
rendered in a JSON array and contains information about how much time different
restore operations required. Many of the restore statistics are created
by CRIU and just passed through to Podman. The following information is provided
in the JSON array:
- **podman_restore_duration**: Overall time (in microseconds) needed to restore
all checkpoints.
- **runtime_restore_duration**: Time (in microseconds) the container runtime
needed to restore the checkpoint.
- **forking_time**: Time (in microseconds) CRIU needed to create (fork) all
processes in the restored container (measured by CRIU).
- **restore_time**: Time (in microseconds) CRIU needed to restore all processes
in the container (measured by CRIU).
- **pages_restored**: Number of memory pages restored (measured by CRIU).
The default is **false**.
#### **--publish**, **-p**=*port*
Replaces the ports that the *container* publishes, as configured during the
@ -137,7 +161,7 @@ $ podman run --rm -p 2345:80 -d webserver
```
## SEE ALSO
**[podman(1)](podman.1.md)**, **[podman-container-checkpoint(1)](podman-container-checkpoint.1.md)**, **[podman-run(1)](podman-run.1.md)**, **[podman-pod-create(1)](podman-pod-create.1.md)**
**[podman(1)](podman.1.md)**, **[podman-container-checkpoint(1)](podman-container-checkpoint.1.md)**, **[podman-run(1)](podman-run.1.md)**, **[podman-pod-create(1)](podman-pod-create.1.md)**, **criu(8)**
## HISTORY
September 2018, Originally compiled by Adrian Reber <areber@redhat.com>

24
libpod/container_api.go
View File

@ -794,21 +794,29 @@ type ContainerCheckpointOptions struct {
// container no PID 1 will be in the namespace and that is not
// possible.
Pod string
// PrintStats tells the API to fill out the statistics about
// how much time each component in the stack requires to
// checkpoint a container.
PrintStats bool
}
// Checkpoint checkpoints a container
func (c *Container) Checkpoint(ctx context.Context, options ContainerCheckpointOptions) error {
// The return values *define.CRIUCheckpointRestoreStatistics and int64 (time
// the runtime needs to checkpoint the container) are only set if
// options.PrintStats is set to true. Not setting options.PrintStats to true
// will return nil and 0.
func (c *Container) Checkpoint(ctx context.Context, options ContainerCheckpointOptions) (*define.CRIUCheckpointRestoreStatistics, int64, error) {
logrus.Debugf("Trying to checkpoint container %s", c.ID())
if options.TargetFile != "" {
if err := c.prepareCheckpointExport(); err != nil {
return err
return nil, 0, err
}
}
if options.WithPrevious {
if err := c.canWithPrevious(); err != nil {
return err
return nil, 0, err
}
}
@ -817,14 +825,18 @@ func (c *Container) Checkpoint(ctx context.Context, options ContainerCheckpointO
defer c.lock.Unlock()
if err := c.syncContainer(); err != nil {
return err
return nil, 0, err
}
}
return c.checkpoint(ctx, options)
}
// Restore restores a container
func (c *Container) Restore(ctx context.Context, options ContainerCheckpointOptions) error {
// The return values *define.CRIUCheckpointRestoreStatistics and int64 (time
// the runtime needs to restore the container) are only set if
// options.PrintStats is set to true. Not setting options.PrintStats to true
// will return nil and 0.
func (c *Container) Restore(ctx context.Context, options ContainerCheckpointOptions) (*define.CRIUCheckpointRestoreStatistics, int64, error) {
if options.Pod == "" {
logrus.Debugf("Trying to restore container %s", c.ID())
} else {
@ -835,7 +847,7 @@ func (c *Container) Restore(ctx context.Context, options ContainerCheckpointOpti
defer c.lock.Unlock()
if err := c.syncContainer(); err != nil {
return err
return nil, 0, err
}
}
defer c.newContainerEvent(events.Restore)

2
libpod/container_internal.go
View File

@ -1089,7 +1089,7 @@ func (c *Container) init(ctx context.Context, retainRetries bool) error {
}
// With the spec complete, do an OCI create
if err := c.ociRuntime.CreateContainer(c, nil); err != nil {
if _, err = c.ociRuntime.CreateContainer(c, nil); err != nil {
// Fedora 31 is carrying a patch to display improved error
// messages to better handle the V2 transition. This is NOT
// upstream in any OCI runtime.

159
libpod/container_internal_linux.go
View File

@ -1129,25 +1129,26 @@ func (c *Container) checkpointRestoreSupported(version int) error {
return nil
}
func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointOptions) error {
func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointOptions) (*define.CRIUCheckpointRestoreStatistics, int64, error) {
if err := c.checkpointRestoreSupported(criu.MinCriuVersion); err != nil {
return err
return nil, 0, err
}
if c.state.State != define.ContainerStateRunning {
return errors.Wrapf(define.ErrCtrStateInvalid, "%q is not running, cannot checkpoint", c.state.State)
return nil, 0, errors.Wrapf(define.ErrCtrStateInvalid, "%q is not running, cannot checkpoint", c.state.State)
}
if c.AutoRemove() && options.TargetFile == "" {
return errors.Errorf("cannot checkpoint containers that have been started with '--rm' unless '--export' is used")
return nil, 0, errors.Errorf("cannot checkpoint containers that have been started with '--rm' unless '--export' is used")
}
if err := crutils.CRCreateFileWithLabel(c.bundlePath(), "dump.log", c.MountLabel()); err != nil {
return err
return nil, 0, err
}
if err := c.ociRuntime.CheckpointContainer(c, options); err != nil {
return err
runtimeCheckpointDuration, err := c.ociRuntime.CheckpointContainer(c, options)
if err != nil {
return nil, 0, err
}
// Save network.status. This is needed to restore the container with
@ -1155,7 +1156,7 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
// with one interface.
// FIXME: will this break something?
if _, err := metadata.WriteJSONFile(c.getNetworkStatus(), c.bundlePath(), metadata.NetworkStatusFile); err != nil {
return err
return nil, 0, err
}
defer c.newContainerEvent(events.Checkpoint)
@ -1165,13 +1166,13 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
if options.WithPrevious {
os.Remove(path.Join(c.CheckpointPath(), "parent"))
if err := os.Symlink("../pre-checkpoint", path.Join(c.CheckpointPath(), "parent")); err != nil {
return err
return nil, 0, err
}
}
if options.TargetFile != "" {
if err := c.exportCheckpoint(options); err != nil {
return err
return nil, 0, err
}
}
@ -1183,10 +1184,37 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
// Cleanup Storage and Network
if err := c.cleanup(ctx); err != nil {
return err
return nil, 0, err
}
}
criuStatistics, err := func() (*define.CRIUCheckpointRestoreStatistics, error) {
if !options.PrintStats {
return nil, nil
}
statsDirectory, err := os.Open(c.bundlePath())
if err != nil {
return nil, errors.Wrapf(err, "Not able to open %q", c.bundlePath())
}
dumpStatistics, err := stats.CriuGetDumpStats(statsDirectory)
if err != nil {
return nil, errors.Wrap(err, "Displaying checkpointing statistics not possible")
}
return &define.CRIUCheckpointRestoreStatistics{
FreezingTime: dumpStatistics.GetFreezingTime(),
FrozenTime: dumpStatistics.GetFrozenTime(),
MemdumpTime: dumpStatistics.GetMemdumpTime(),
MemwriteTime: dumpStatistics.GetMemwriteTime(),
PagesScanned: dumpStatistics.GetPagesScanned(),
PagesWritten: dumpStatistics.GetPagesWritten(),
}, nil
}()
if err != nil {
return nil, 0, err
}
if !options.Keep && !options.PreCheckPoint {
cleanup := []string{
"dump.log",
@ -1203,7 +1231,7 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
}
c.state.FinishedTime = time.Now()
return c.save()
return criuStatistics, runtimeCheckpointDuration, c.save()
}
func (c *Container) importCheckpoint(input string) error {
@ -1236,7 +1264,7 @@ func (c *Container) importPreCheckpoint(input string) error {
return nil
}
func (c *Container) restore(ctx context.Context, options ContainerCheckpointOptions) (retErr error) {
func (c *Container) restore(ctx context.Context, options ContainerCheckpointOptions) (criuStatistics *define.CRIUCheckpointRestoreStatistics, runtimeRestoreDuration int64, retErr error) {
minCriuVersion := func() int {
if options.Pod == "" {
return criu.MinCriuVersion
@ -1244,37 +1272,37 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
return criu.PodCriuVersion
}()
if err := c.checkpointRestoreSupported(minCriuVersion); err != nil {
return err
return nil, 0, err
}
if options.Pod != "" && !crutils.CRRuntimeSupportsPodCheckpointRestore(c.ociRuntime.Path()) {
return errors.Errorf("runtime %s does not support pod restore", c.ociRuntime.Path())
return nil, 0, errors.Errorf("runtime %s does not support pod restore", c.ociRuntime.Path())
}
if !c.ensureState(define.ContainerStateConfigured, define.ContainerStateExited) {
return errors.Wrapf(define.ErrCtrStateInvalid, "container %s is running or paused, cannot restore", c.ID())
return nil, 0, errors.Wrapf(define.ErrCtrStateInvalid, "container %s is running or paused, cannot restore", c.ID())
}
if options.ImportPrevious != "" {
if err := c.importPreCheckpoint(options.ImportPrevious); err != nil {
return err
return nil, 0, err
}
}
if options.TargetFile != "" {
if err := c.importCheckpoint(options.TargetFile); err != nil {
return err
return nil, 0, err
}
}
// Let's try to stat() CRIU's inventory file. If it does not exist, it makes
// no sense to try a restore. This is a minimal check if a checkpoint exist.
if _, err := os.Stat(filepath.Join(c.CheckpointPath(), "inventory.img")); os.IsNotExist(err) {
return errors.Wrapf(err, "a complete checkpoint for this container cannot be found, cannot restore")
return nil, 0, errors.Wrapf(err, "a complete checkpoint for this container cannot be found, cannot restore")
}
if err := crutils.CRCreateFileWithLabel(c.bundlePath(), "restore.log", c.MountLabel()); err != nil {
return err
return nil, 0, err
}
// If a container is restored multiple times from an exported checkpoint with
@ -1311,7 +1339,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
// container with the same networks settings as during checkpointing.
aliases, err := c.GetAllNetworkAliases()
if err != nil {
return err
return nil, 0, err
}
netOpts := make(map[string]types.PerNetworkOptions, len(netStatus))
for network, status := range netStatus {
@ -1336,7 +1364,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
if perNetOpts.InterfaceName == "" {
eth, exists := c.state.NetInterfaceDescriptions.getInterfaceByName(network)
if !exists {
return errors.Errorf("no network interface name for container %s on network %s", c.config.ID, network)
return nil, 0, errors.Errorf("no network interface name for container %s on network %s", c.config.ID, network)
}
perNetOpts.InterfaceName = eth
}
@ -1354,7 +1382,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
}()
if err := c.prepare(); err != nil {
return err
return nil, 0, err
}
// Read config
@ -1363,7 +1391,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
g, err := generate.NewFromFile(jsonPath)
if err != nil {
logrus.Debugf("generate.NewFromFile failed with %v", err)
return err
return nil, 0, err
}
// Restoring from an import means that we are doing migration
@ -1379,7 +1407,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), netNSPath); err != nil {
return err
return nil, 0, err
}
}
@ -1388,23 +1416,23 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
// the ones from the infrastructure container.
pod, err := c.runtime.LookupPod(options.Pod)
if err != nil {
return errors.Wrapf(err, "pod %q cannot be retrieved", options.Pod)
return nil, 0, errors.Wrapf(err, "pod %q cannot be retrieved", options.Pod)
}
infraContainer, err := pod.InfraContainer()
if err != nil {
return errors.Wrapf(err, "cannot retrieved infra container from pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieved infra container from pod %q", options.Pod)
}
infraContainer.lock.Lock()
if err := infraContainer.syncContainer(); err != nil {
infraContainer.lock.Unlock()
return errors.Wrapf(err, "Error syncing infrastructure container %s status", infraContainer.ID())
return nil, 0, errors.Wrapf(err, "Error syncing infrastructure container %s status", infraContainer.ID())
}
if infraContainer.state.State != define.ContainerStateRunning {
if err := infraContainer.initAndStart(ctx); err != nil {
infraContainer.lock.Unlock()
return errors.Wrapf(err, "Error starting infrastructure container %s status", infraContainer.ID())
return nil, 0, errors.Wrapf(err, "Error starting infrastructure container %s status", infraContainer.ID())
}
}
infraContainer.lock.Unlock()
@ -1412,56 +1440,56 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
if c.config.IPCNsCtr != "" {
nsPath, err := infraContainer.namespacePath(IPCNS)
if err != nil {
return errors.Wrapf(err, "cannot retrieve IPC namespace path for Pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieve IPC namespace path for Pod %q", options.Pod)
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.IPCNamespace), nsPath); err != nil {
return err
return nil, 0, err
}
}
if c.config.NetNsCtr != "" {
nsPath, err := infraContainer.namespacePath(NetNS)
if err != nil {
return errors.Wrapf(err, "cannot retrieve network namespace path for Pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieve network namespace path for Pod %q", options.Pod)
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.NetworkNamespace), nsPath); err != nil {
return err
return nil, 0, err
}
}
if c.config.PIDNsCtr != "" {
nsPath, err := infraContainer.namespacePath(PIDNS)
if err != nil {
return errors.Wrapf(err, "cannot retrieve PID namespace path for Pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieve PID namespace path for Pod %q", options.Pod)
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.PIDNamespace), nsPath); err != nil {
return err
return nil, 0, err
}
}
if c.config.UTSNsCtr != "" {
nsPath, err := infraContainer.namespacePath(UTSNS)
if err != nil {
return errors.Wrapf(err, "cannot retrieve UTS namespace path for Pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieve UTS namespace path for Pod %q", options.Pod)
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.UTSNamespace), nsPath); err != nil {
return err
return nil, 0, err
}
}
if c.config.CgroupNsCtr != "" {
nsPath, err := infraContainer.namespacePath(CgroupNS)
if err != nil {
return errors.Wrapf(err, "cannot retrieve Cgroup namespace path for Pod %q", options.Pod)
return nil, 0, errors.Wrapf(err, "cannot retrieve Cgroup namespace path for Pod %q", options.Pod)
}
if err := g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), nsPath); err != nil {
return err
return nil, 0, err
}
}
}
if err := c.makeBindMounts(); err != nil {
return err
return nil, 0, err
}
if options.TargetFile != "" {
@ -1483,12 +1511,12 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
// Cleanup for a working restore.
if err := c.removeConmonFiles(); err != nil {
return err
return nil, 0, err
}
// Save the OCI spec to disk
if err := c.saveSpec(g.Config); err != nil {
return err
return nil, 0, err
}
// When restoring from an imported archive, allow restoring the content of volumes.
@ -1499,24 +1527,24 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
volumeFile, err := os.Open(volumeFilePath)
if err != nil {
return errors.Wrapf(err, "failed to open volume file %s", volumeFilePath)
return nil, 0, errors.Wrapf(err, "failed to open volume file %s", volumeFilePath)
}
defer volumeFile.Close()
volume, err := c.runtime.GetVolume(v.Name)
if err != nil {
return errors.Wrapf(err, "failed to retrieve volume %s", v.Name)
return nil, 0, errors.Wrapf(err, "failed to retrieve volume %s", v.Name)
}
mountPoint, err := volume.MountPoint()
if err != nil {
return err
return nil, 0, err
}
if mountPoint == "" {
return errors.Wrapf(err, "unable to import volume %s as it is not mounted", volume.Name())
return nil, 0, errors.Wrapf(err, "unable to import volume %s as it is not mounted", volume.Name())
}
if err := archive.UntarUncompressed(volumeFile, mountPoint, nil); err != nil {
return errors.Wrapf(err, "Failed to extract volume %s to %s", volumeFilePath, mountPoint)
return nil, 0, errors.Wrapf(err, "Failed to extract volume %s to %s", volumeFilePath, mountPoint)
}
}
}
@ -1524,16 +1552,43 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
// Before actually restarting the container, apply the root file-system changes
if !options.IgnoreRootfs {
if err := crutils.CRApplyRootFsDiffTar(c.bundlePath(), c.state.Mountpoint); err != nil {
return err
return nil, 0, err
}
if err := crutils.CRRemoveDeletedFiles(c.ID(), c.bundlePath(), c.state.Mountpoint); err != nil {
return err
return nil, 0, err
}
}
if err := c.ociRuntime.CreateContainer(c, &options); err != nil {
return err
runtimeRestoreDuration, err = c.ociRuntime.CreateContainer(c, &options)
if err != nil {
return nil, 0, err
}
criuStatistics, err = func() (*define.CRIUCheckpointRestoreStatistics, error) {
if !options.PrintStats {
return nil, nil
}
statsDirectory, err := os.Open(c.bundlePath())
if err != nil {
return nil, errors.Wrapf(err, "Not able to open %q", c.bundlePath())
}
restoreStatistics, err := stats.CriuGetRestoreStats(statsDirectory)
if err != nil {
return nil, errors.Wrap(err, "Displaying restore statistics not possible")
}
return &define.CRIUCheckpointRestoreStatistics{
PagesCompared: restoreStatistics.GetPagesCompared(),
PagesSkippedCow: restoreStatistics.GetPagesSkippedCow(),
ForkingTime: restoreStatistics.GetForkingTime(),
RestoreTime: restoreStatistics.GetRestoreTime(),
PagesRestored: restoreStatistics.GetPagesRestored(),
}, nil
}()
if err != nil {
return nil, 0, err
}
logrus.Debugf("Restored container %s", c.ID())
@ -1572,7 +1627,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
}
}
return c.save()
return criuStatistics, runtimeRestoreDuration, c.save()
}
// Retrieves a container's "root" net namespace container dependency.

32
libpod/define/checkpoint_restore.go Normal file
View File

@ -0,0 +1,32 @@
package define
// This contains values reported by CRIU during
// checkpointing or restoring.
// All names are the same as reported by CRIU.
type CRIUCheckpointRestoreStatistics struct {
// Checkpoint values
// Time required to freeze/pause/quiesce the processes
FreezingTime uint32 `json:"freezing_time,omitempty"`
// Time the processes are actually not running during checkpointing
FrozenTime uint32 `json:"frozen_time,omitempty"`
// Time required to extract memory pages from the processes
MemdumpTime uint32 `json:"memdump_time,omitempty"`
// Time required to write memory pages to disk
MemwriteTime uint32 `json:"memwrite_time,omitempty"`
// Number of memory pages CRIU analyzed
PagesScanned uint64 `json:"pages_scanned,omitempty"`
// Number of memory pages written
PagesWritten uint64 `json:"pages_written,omitempty"`
// Restore values
// Number of pages compared during restore
PagesCompared uint64 `json:"pages_compared,omitempty"`
// Number of COW pages skipped during restore
PagesSkippedCow uint64 `json:"pages_skipped_cow,omitempty"`
// Time required to fork processes
ForkingTime uint32 `json:"forking_time,omitempty"`
// Time required to restore
RestoreTime uint32 `json:"restore_time,omitempty"`
// Number of memory pages restored
PagesRestored uint64 `json:"pages_restored,omitempty"`
}

11
libpod/oci.go
View File

@ -23,7 +23,10 @@ type OCIRuntime interface {
Path() string
// CreateContainer creates the container in the OCI runtime.
CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) error
// The returned int64 contains the microseconds needed to restore
// the given container if it is a restore and if restoreOptions.PrintStats
// is true. In all other cases the returned int64 is 0.
CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) (int64, error)
// UpdateContainerStatus updates the status of the given container.
UpdateContainerStatus(ctr *Container) error
// StartContainer starts the given container.
@ -101,8 +104,10 @@ type OCIRuntime interface {
// CheckpointContainer checkpoints the given container.
// Some OCI runtimes may not support this - if SupportsCheckpoint()
// returns false, this is not implemented, and will always return an
// error.
CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) error
// error. If CheckpointOptions.PrintStats is true the first return parameter
// contains the number of microseconds the runtime needed to checkpoint
// the given container.
CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) (int64, error)
// CheckConmonRunning verifies that the given container's Conmon
// instance is still running. Runtimes without Conmon, or systems where

96
libpod/oci_conmon_linux.go
View File

@ -183,35 +183,39 @@ func hasCurrentUserMapped(ctr *Container) bool {
}
// CreateContainer creates a container.
func (r *ConmonOCIRuntime) CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) error {
func (r *ConmonOCIRuntime) CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) (int64, error) {
// always make the run dir accessible to the current user so that the PID files can be read without
// being in the rootless user namespace.
if err := makeAccessible(ctr.state.RunDir, 0, 0); err != nil {
return err
return 0, err
}
if !hasCurrentUserMapped(ctr) {
for _, i := range []string{ctr.state.RunDir, ctr.runtime.config.Engine.TmpDir, ctr.config.StaticDir, ctr.state.Mountpoint, ctr.runtime.config.Engine.VolumePath} {
if err := makeAccessible(i, ctr.RootUID(), ctr.RootGID()); err != nil {
return err
return 0, err
}
}
// if we are running a non privileged container, be sure to umount some kernel paths so they are not
// bind mounted inside the container at all.
if !ctr.config.Privileged && !rootless.IsRootless() {
ch := make(chan error)
type result struct {
restoreDuration int64
err error
}
ch := make(chan result)
go func() {
runtime.LockOSThread()
err := func() error {
restoreDuration, err := func() (int64, error) {
fd, err := os.Open(fmt.Sprintf("/proc/%d/task/%d/ns/mnt", os.Getpid(), unix.Gettid()))
if err != nil {
return err
return 0, err
}
defer errorhandling.CloseQuiet(fd)
// create a new mountns on the current thread
if err = unix.Unshare(unix.CLONE_NEWNS); err != nil {
return err
return 0, err
}
defer func() {
if err := unix.Setns(int(fd.Fd()), unix.CLONE_NEWNS); err != nil {
@ -224,12 +228,12 @@ func (r *ConmonOCIRuntime) CreateContainer(ctr *Container, restoreOptions *Conta
// changes are propagated to the host.
err = unix.Mount("/sys", "/sys", "none", unix.MS_REC|unix.MS_SLAVE, "")
if err != nil {
return errors.Wrapf(err, "cannot make /sys slave")
return 0, errors.Wrapf(err, "cannot make /sys slave")
}
mounts, err := pmount.GetMounts()
if err != nil {
return err
return 0, err
}
for _, m := range mounts {
if !strings.HasPrefix(m.Mountpoint, "/sys/kernel") {
@ -237,15 +241,18 @@ func (r *ConmonOCIRuntime) CreateContainer(ctr *Container, restoreOptions *Conta
}
err = unix.Unmount(m.Mountpoint, 0)
if err != nil && !os.IsNotExist(err) {
return errors.Wrapf(err, "cannot unmount %s", m.Mountpoint)
return 0, errors.Wrapf(err, "cannot unmount %s", m.Mountpoint)
}
}
return r.createOCIContainer(ctr, restoreOptions)
}()
ch <- err
ch <- result{
restoreDuration: restoreDuration,
err: err,
}
}()
err := <-ch
return err
r := <-ch
return r.restoreDuration, r.err
}
}
return r.createOCIContainer(ctr, restoreOptions)
@ -760,9 +767,9 @@ func (r *ConmonOCIRuntime) AttachResize(ctr *Container, newSize define.TerminalS
}
// CheckpointContainer checkpoints the given container.
func (r *ConmonOCIRuntime) CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) error {
func (r *ConmonOCIRuntime) CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) (int64, error) {
if err := label.SetSocketLabel(ctr.ProcessLabel()); err != nil {
return err
return 0, err
}
// imagePath is used by CRIU to store the actual checkpoint files
imagePath := ctr.CheckpointPath()
@ -802,14 +809,25 @@ func (r *ConmonOCIRuntime) CheckpointContainer(ctr *Container, options Container
}
runtimeDir, err := util.GetRuntimeDir()
if err != nil {
return err
return 0, err
}
if err = os.Setenv("XDG_RUNTIME_DIR", runtimeDir); err != nil {
return errors.Wrapf(err, "cannot set XDG_RUNTIME_DIR")
return 0, errors.Wrapf(err, "cannot set XDG_RUNTIME_DIR")
}
args = append(args, ctr.ID())
logrus.Debugf("the args to checkpoint: %s %s", r.path, strings.Join(args, " "))
return utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, nil, r.path, args...)
runtimeCheckpointStarted := time.Now()
err = utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, nil, r.path, args...)
runtimeCheckpointDuration := func() int64 {
if options.PrintStats {
return time.Since(runtimeCheckpointStarted).Microseconds()
}
return 0
}()
return runtimeCheckpointDuration, err
}
func (r *ConmonOCIRuntime) CheckConmonRunning(ctr *Container) (bool, error) {
@ -984,23 +1002,23 @@ func (r *ConmonOCIRuntime) getLogTag(ctr *Container) (string, error) {
}
// createOCIContainer generates this container's main conmon instance and prepares it for starting
func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) error {
func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) (int64, error) {
var stderrBuf bytes.Buffer
runtimeDir, err := util.GetRuntimeDir()
if err != nil {
return err
return 0, err
}
parentSyncPipe, childSyncPipe, err := newPipe()
if err != nil {
return errors.Wrapf(err, "error creating socket pair")
return 0, errors.Wrapf(err, "error creating socket pair")
}
defer errorhandling.CloseQuiet(parentSyncPipe)
childStartPipe, parentStartPipe, err := newPipe()
if err != nil {
return errors.Wrapf(err, "error creating socket pair for start pipe")
return 0, errors.Wrapf(err, "error creating socket pair for start pipe")
}
defer errorhandling.CloseQuiet(parentStartPipe)
@ -1012,12 +1030,12 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
logTag, err := r.getLogTag(ctr)
if err != nil {
return err
return 0, err
}
if ctr.config.CgroupsMode == cgroupSplit {
if err := utils.MoveUnderCgroupSubtree("runtime"); err != nil {
return err
return 0, err
}
}
@ -1068,7 +1086,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
} else {
fds, err := strconv.Atoi(val)
if err != nil {
return fmt.Errorf("converting LISTEN_FDS=%s: %w", val, err)
return 0, fmt.Errorf("converting LISTEN_FDS=%s: %w", val, err)
}
preserveFDs = uint(fds)
}
@ -1149,7 +1167,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
if r.reservePorts && !rootless.IsRootless() && !ctr.config.NetMode.IsSlirp4netns() {
ports, err := bindPorts(ctr.config.PortMappings)
if err != nil {
return err
return 0, err
}
filesToClose = append(filesToClose, ports...)
@ -1165,12 +1183,12 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
if havePortMapping {
ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
if err != nil {
return errors.Wrapf(err, "failed to create rootless port sync pipe")
return 0, errors.Wrapf(err, "failed to create rootless port sync pipe")
}
}
ctr.rootlessSlirpSyncR, ctr.rootlessSlirpSyncW, err = os.Pipe()
if err != nil {
return errors.Wrapf(err, "failed to create rootless network sync pipe")
return 0, errors.Wrapf(err, "failed to create rootless network sync pipe")
}
} else {
if ctr.rootlessSlirpSyncR != nil {
@ -1189,22 +1207,25 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncW)
}
}
var runtimeRestoreStarted time.Time
if restoreOptions != nil {
runtimeRestoreStarted = time.Now()
}
err = startCommandGivenSelinux(cmd, ctr)
// regardless of whether we errored or not, we no longer need the children pipes
childSyncPipe.Close()
childStartPipe.Close()
if err != nil {
return err
return 0, err
}
if err := r.moveConmonToCgroupAndSignal(ctr, cmd, parentStartPipe); err != nil {
return err
return 0, err
}
/* Wait for initial setup and fork, and reap child */
err = cmd.Wait()
if err != nil {
return err
return 0, err
}
pid, err := readConmonPipeData(parentSyncPipe, ociLog)
@ -1212,7 +1233,7 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
if err2 := r.DeleteContainer(ctr); err2 != nil {
logrus.Errorf("Removing container %s from runtime after creation failed", ctr.ID())
}
return err
return 0, err
}
ctr.state.PID = pid
@ -1238,13 +1259,20 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
}
}
runtimeRestoreDuration := func() int64 {
if restoreOptions != nil && restoreOptions.PrintStats {
return time.Since(runtimeRestoreStarted).Microseconds()
}
return 0
}()
// These fds were passed down to the runtime. Close them
// and not interfere
for _, f := range filesToClose {
errorhandling.CloseQuiet(f)
}
return nil
return runtimeRestoreDuration, nil
}
// configureConmonEnv gets the environment values to add to conmon's exec struct

8
libpod/oci_missing.go
View File

@ -66,8 +66,8 @@ func (r *MissingRuntime) Path() string {
}
// CreateContainer is not available as the runtime is missing
func (r *MissingRuntime) CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) error {
return r.printError()
func (r *MissingRuntime) CreateContainer(ctr *Container, restoreOptions *ContainerCheckpointOptions) (int64, error) {
return 0, r.printError()
}
// UpdateContainerStatus is not available as the runtime is missing
@ -153,8 +153,8 @@ func (r *MissingRuntime) ExecUpdateStatus(ctr *Container, sessionID string) (boo
}
// CheckpointContainer is not available as the runtime is missing
func (r *MissingRuntime) CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) error {
return r.printError()
func (r *MissingRuntime) CheckpointContainer(ctr *Container, options ContainerCheckpointOptions) (int64, error) {
return 0, r.printError()
}
// CheckConmonRunning is not available as the runtime is missing

28
pkg/api/handlers/libpod/containers.go
View File

@ -214,6 +214,7 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) {
TCPEstablished bool `schema:"tcpEstablished"`
Export bool `schema:"export"`
IgnoreRootFS bool `schema:"ignoreRootFS"`
PrintStats bool `schema:"printStats"`
}{
// override any golang type defaults
}
@ -248,11 +249,12 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) {
KeepRunning: query.LeaveRunning,
TCPEstablished: query.TCPEstablished,
IgnoreRootfs: query.IgnoreRootFS,
PrintStats: query.PrintStats,
}
if query.Export {
options.TargetFile = targetFile
}
err = ctr.Checkpoint(r.Context(), options)
criuStatistics, runtimeCheckpointDuration, err := ctr.Checkpoint(r.Context(), options)
if err != nil {
utils.InternalServerError(w, err)
return
@ -267,7 +269,15 @@ func Checkpoint(w http.ResponseWriter, r *http.Request) {
utils.WriteResponse(w, http.StatusOK, f)
return
}
utils.WriteResponse(w, http.StatusOK, entities.CheckpointReport{Id: ctr.ID()})
utils.WriteResponse(
w,
http.StatusOK,
entities.CheckpointReport{
Id: ctr.ID(),
RuntimeDuration: runtimeCheckpointDuration,
CRIUStatistics: criuStatistics,
},
)
}
func Restore(w http.ResponseWriter, r *http.Request) {
@ -284,6 +294,7 @@ func Restore(w http.ResponseWriter, r *http.Request) {
IgnoreVolumes bool `schema:"ignoreVolumes"`
IgnoreStaticIP bool `schema:"ignoreStaticIP"`
IgnoreStaticMAC bool `schema:"ignoreStaticMAC"`
PrintStats bool `schema:"printStats"`
}{
// override any golang type defaults
}
@ -319,17 +330,26 @@ func Restore(w http.ResponseWriter, r *http.Request) {
IgnoreRootfs: query.IgnoreRootFS,
IgnoreStaticIP: query.IgnoreStaticIP,
IgnoreStaticMAC: query.IgnoreStaticMAC,
PrintStats: query.PrintStats,
}
if query.Import {
options.TargetFile = targetFile
options.Name = query.Name
}
err = ctr.Restore(r.Context(), options)
criuStatistics, runtimeRestoreDuration, err := ctr.Restore(r.Context(), options)
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusOK, entities.RestoreReport{Id: ctr.ID()})
utils.WriteResponse(
w,
http.StatusOK,
entities.RestoreReport{
Id: ctr.ID(),
RuntimeDuration: runtimeRestoreDuration,
CRIUStatistics: criuStatistics,
},
)
}
func InitContainer(w http.ResponseWriter, r *http.Request) {

8
pkg/api/server/register_containers.go
View File

@ -1441,6 +1441,10 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// name: ignoreRootFS
// type: boolean
// description: do not include root file-system changes when exporting
// - in: query
// name: printStats
// type: boolean
// description: add checkpoint statistics to the returned CheckpointReport
// produces:
// - application/json
// responses:
@ -1495,6 +1499,10 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// name: ignoreStaticMAC
// type: boolean
// description: ignore MAC address if set statically
// - in: query
// name: printStats
// type: boolean
// description: add restore statistics to the returned RestoreReport
// produces:
// - application/json
// responses:

14
pkg/domain/entities/containers.go
View File

@ -190,11 +190,14 @@ type CheckpointOptions struct {
PreCheckPoint bool
WithPrevious bool
Compression archive.Compression
PrintStats bool
}
type CheckpointReport struct {
Err error
Id string //nolint
Err error `json:"-"`
Id string `json:"Id` //nolint
RuntimeDuration int64 `json:"runtime_checkpoint_duration"`
CRIUStatistics *define.CRIUCheckpointRestoreStatistics `json:"criu_statistics"`
}
type RestoreOptions struct {
@ -211,11 +214,14 @@ type RestoreOptions struct {
ImportPrevious string
PublishPorts []nettypes.PortMapping
Pod string
PrintStats bool
}
type RestoreReport struct {
Err error
Id string //nolint
Err error `json:"-"`
Id string `json:"Id` //nolint
RuntimeDuration int64 `json:"runtime_restore_duration"`
CRIUStatistics *define.CRIUCheckpointRestoreStatistics `json:"criu_statistics"`
}
type ContainerCreateReport struct {

18
pkg/domain/infra/abi/containers.go
View File

@ -515,6 +515,7 @@ func (ic *ContainerEngine) ContainerCheckpoint(ctx context.Context, namesOrIds [
PreCheckPoint: options.PreCheckPoint,
WithPrevious: options.WithPrevious,
Compression: options.Compression,
PrintStats: options.PrintStats,
}
if options.All {
@ -531,10 +532,12 @@ func (ic *ContainerEngine) ContainerCheckpoint(ctx context.Context, namesOrIds [
}
reports := make([]*entities.CheckpointReport, 0, len(cons))
for _, con := range cons {
err = con.Checkpoint(ctx, checkOpts)
criuStatistics, runtimeCheckpointDuration, err := con.Checkpoint(ctx, checkOpts)
reports = append(reports, &entities.CheckpointReport{
Err: err,
Id: con.ID(),
Err: err,
Id: con.ID(),
RuntimeDuration: runtimeCheckpointDuration,
CRIUStatistics: criuStatistics,
})
}
return reports, nil
@ -557,6 +560,7 @@ func (ic *ContainerEngine) ContainerRestore(ctx context.Context, namesOrIds []st
IgnoreStaticMAC: options.IgnoreStaticMAC,
ImportPrevious: options.ImportPrevious,
Pod: options.Pod,
PrintStats: options.PrintStats,
}
filterFuncs := []libpod.ContainerFilter{
@ -579,10 +583,12 @@ func (ic *ContainerEngine) ContainerRestore(ctx context.Context, namesOrIds []st
}
reports := make([]*entities.RestoreReport, 0, len(cons))
for _, con := range cons {
err := con.Restore(ctx, restoreOptions)
criuStatistics, runtimeRestoreDuration, err := con.Restore(ctx, restoreOptions)
reports = append(reports, &entities.RestoreReport{
Err: err,
Id: con.ID(),
Err: err,
Id: con.ID(),
RuntimeDuration: runtimeRestoreDuration,
CRIUStatistics: criuStatistics,
})
}
return reports, nil

95
test/e2e/checkpoint_test.go
View File

@ -1,6 +1,7 @@
package integration
import (
"encoding/json"
"fmt"
"net"
"os"
@ -12,6 +13,7 @@ import (
"github.com/checkpoint-restore/go-criu/v5/stats"
"github.com/containers/podman/v3/pkg/checkpoint/crutils"
"github.com/containers/podman/v3/pkg/criu"
"github.com/containers/podman/v3/pkg/domain/entities"
. "github.com/containers/podman/v3/test/utils"
"github.com/containers/podman/v3/utils"
. "github.com/onsi/ginkgo"
@ -1244,4 +1246,97 @@ var _ = Describe("Podman checkpoint", func() {
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint and restore containers with --print-stats", func() {
session1 := podmanTest.Podman(getRunString([]string{redis}))
session1.WaitWithDefaultTimeout()
Expect(session1).Should(Exit(0))
session2 := podmanTest.Podman(getRunString([]string{redis, "top"}))
session2.WaitWithDefaultTimeout()
Expect(session2).Should(Exit(0))
result := podmanTest.Podman([]string{
"container",
"checkpoint",
"-a",
"--print-stats",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
type checkpointStatistics struct {
PodmanDuration int64 `json:"podman_checkpoint_duration"`
ContainerStatistics []*entities.CheckpointReport `json:"container_statistics"`
}
cS := new(checkpointStatistics)
err := json.Unmarshal([]byte(result.OutputToString()), cS)
Expect(err).ShouldNot(HaveOccurred())
Expect(len(cS.ContainerStatistics)).To(Equal(2))
Expect(cS.PodmanDuration).To(BeNumerically(">", cS.ContainerStatistics[0].RuntimeDuration))
Expect(cS.PodmanDuration).To(BeNumerically(">", cS.ContainerStatistics[1].RuntimeDuration))
Expect(cS.ContainerStatistics[0].RuntimeDuration).To(
BeNumerically(">", cS.ContainerStatistics[0].CRIUStatistics.FrozenTime),
)
Expect(cS.ContainerStatistics[1].RuntimeDuration).To(
BeNumerically(">", cS.ContainerStatistics[1].CRIUStatistics.FrozenTime),
)
ps := podmanTest.Podman([]string{
"ps",
"-q",
"--no-trunc",
})
ps.WaitWithDefaultTimeout()
Expect(ps).Should(Exit(0))
Expect(ps.LineInOutputContains(session1.OutputToString())).To(BeFalse())
Expect(ps.LineInOutputContains(session2.OutputToString())).To(BeFalse())
result = podmanTest.Podman([]string{
"container",
"restore",
"-a",
"--print-stats",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
Expect(podmanTest.GetContainerStatus()).To(Not(ContainSubstring("Exited")))
type restoreStatistics struct {
PodmanDuration int64 `json:"podman_restore_duration"`
ContainerStatistics []*entities.RestoreReport `json:"container_statistics"`
}
rS := new(restoreStatistics)
err = json.Unmarshal([]byte(result.OutputToString()), rS)
Expect(err).ShouldNot(HaveOccurred())
Expect(len(cS.ContainerStatistics)).To(Equal(2))
Expect(cS.PodmanDuration).To(BeNumerically(">", cS.ContainerStatistics[0].RuntimeDuration))
Expect(cS.PodmanDuration).To(BeNumerically(">", cS.ContainerStatistics[1].RuntimeDuration))
Expect(cS.ContainerStatistics[0].RuntimeDuration).To(
BeNumerically(">", cS.ContainerStatistics[0].CRIUStatistics.RestoreTime),
)
Expect(cS.ContainerStatistics[1].RuntimeDuration).To(
BeNumerically(">", cS.ContainerStatistics[1].CRIUStatistics.RestoreTime),
)
result = podmanTest.Podman([]string{
"rm",
"-t",
"0",
"-fa",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
})