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-rw-r--r--libpod/container_internal_linux.go145
-rw-r--r--libpod/oci_conmon_linux.go12
2 files changed, 23 insertions, 134 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index dc0418148..24112ae09 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -33,6 +33,7 @@ import (
"github.com/containers/podman/v3/libpod/events"
"github.com/containers/podman/v3/pkg/annotations"
"github.com/containers/podman/v3/pkg/cgroups"
+ "github.com/containers/podman/v3/pkg/checkpoint/crutils"
"github.com/containers/podman/v3/pkg/criu"
"github.com/containers/podman/v3/pkg/lookup"
"github.com/containers/podman/v3/pkg/resolvconf"
@@ -895,69 +896,20 @@ func (c *Container) exportCheckpoint(options ContainerCheckpointOptions) error {
includeFiles[0] = "pre-checkpoint"
}
// Get root file-system changes included in the checkpoint archive
- rootfsDiffPath := filepath.Join(c.bundlePath(), "rootfs-diff.tar")
- deleteFilesList := filepath.Join(c.bundlePath(), "deleted.files")
+ var addToTarFiles []string
if !options.IgnoreRootfs {
// To correctly track deleted files, let's go through the output of 'podman diff'
- tarFiles, err := c.runtime.GetDiff("", c.ID())
+ rootFsChanges, err := c.runtime.GetDiff("", c.ID())
if err != nil {
- return errors.Wrapf(err, "error exporting root file-system diff to %q", rootfsDiffPath)
+ return errors.Wrapf(err, "error exporting root file-system diff for %q", c.ID())
}
- var rootfsIncludeFiles []string
- var deletedFiles []string
- for _, file := range tarFiles {
- if file.Kind == archive.ChangeAdd {
- rootfsIncludeFiles = append(rootfsIncludeFiles, file.Path)
- continue
- }
- if file.Kind == archive.ChangeDelete {
- deletedFiles = append(deletedFiles, file.Path)
- continue
- }
- fileName, err := os.Stat(file.Path)
- if err != nil {
- continue
- }
- if !fileName.IsDir() && file.Kind == archive.ChangeModify {
- rootfsIncludeFiles = append(rootfsIncludeFiles, file.Path)
- continue
- }
- }
-
- if len(rootfsIncludeFiles) > 0 {
- rootfsTar, err := archive.TarWithOptions(c.state.Mountpoint, &archive.TarOptions{
- Compression: archive.Uncompressed,
- IncludeSourceDir: true,
- IncludeFiles: rootfsIncludeFiles,
- })
- if err != nil {
- return errors.Wrapf(err, "error exporting root file-system diff to %q", rootfsDiffPath)
- }
- rootfsDiffFile, err := os.Create(rootfsDiffPath)
- if err != nil {
- return errors.Wrapf(err, "error creating root file-system diff file %q", rootfsDiffPath)
- }
- defer rootfsDiffFile.Close()
- _, err = io.Copy(rootfsDiffFile, rootfsTar)
- if err != nil {
- return err
- }
-
- includeFiles = append(includeFiles, "rootfs-diff.tar")
+ addToTarFiles, err := crutils.CRCreateRootFsDiffTar(&rootFsChanges, c.state.Mountpoint, c.bundlePath())
+ if err != nil {
+ return err
}
- if len(deletedFiles) > 0 {
- formatJSON, err := json.MarshalIndent(deletedFiles, "", " ")
- if err != nil {
- return errors.Wrapf(err, "error creating delete files list file %q", deleteFilesList)
- }
- if err := ioutil.WriteFile(deleteFilesList, formatJSON, 0600); err != nil {
- return errors.Wrap(err, "error creating delete files list file")
- }
-
- includeFiles = append(includeFiles, "deleted.files")
- }
+ includeFiles = append(includeFiles, addToTarFiles...)
}
// Folder containing archived volumes that will be included in the export
@@ -1034,8 +986,9 @@ func (c *Container) exportCheckpoint(options ContainerCheckpointOptions) error {
return err
}
- os.Remove(rootfsDiffPath)
- os.Remove(deleteFilesList)
+ for _, file := range addToTarFiles {
+ os.Remove(filepath.Join(c.bundlePath(), file))
+ }
if !options.IgnoreVolumes {
os.RemoveAll(expVolDir)
@@ -1054,23 +1007,6 @@ func (c *Container) checkpointRestoreSupported() error {
return nil
}
-func (c *Container) checkpointRestoreLabelLog(fileName string) error {
- // Create the CRIU log file and label it
- dumpLog := filepath.Join(c.bundlePath(), fileName)
-
- logFile, err := os.OpenFile(dumpLog, os.O_CREATE, 0600)
- if err != nil {
- return errors.Wrap(err, "failed to create CRIU log file")
- }
- if err := logFile.Close(); err != nil {
- logrus.Error(err)
- }
- if err = label.SetFileLabel(dumpLog, c.MountLabel()); err != nil {
- return err
- }
- return nil
-}
-
func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointOptions) error {
if err := c.checkpointRestoreSupported(); err != nil {
return err
@@ -1084,7 +1020,7 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
return errors.Errorf("cannot checkpoint containers that have been started with '--rm' unless '--export' is used")
}
- if err := c.checkpointRestoreLabelLog("dump.log"); err != nil {
+ if err := crutils.CRCreateFileWithLabel(c.bundlePath(), "dump.log", c.MountLabel()); err != nil {
return err
}
@@ -1151,28 +1087,13 @@ func (c *Container) checkpoint(ctx context.Context, options ContainerCheckpointO
}
func (c *Container) importCheckpoint(input string) error {
- archiveFile, err := os.Open(input)
- if err != nil {
- return errors.Wrap(err, "failed to open checkpoint archive for import")
- }
-
- defer archiveFile.Close()
- options := &archive.TarOptions{
- ExcludePatterns: []string{
- // config.dump and spec.dump are only required
- // container creation
- "config.dump",
- "spec.dump",
- },
- }
- err = archive.Untar(archiveFile, c.bundlePath(), options)
- if err != nil {
- return errors.Wrapf(err, "unpacking of checkpoint archive %s failed", input)
+ if err := crutils.CRImportCheckpointWithoutConfig(c.bundlePath(), input); err != nil {
+ return err
}
// Make sure the newly created config.json exists on disk
g := generate.Generator{Config: c.config.Spec}
- if err = c.saveSpec(g.Config); err != nil {
+ if err := c.saveSpec(g.Config); err != nil {
return errors.Wrap(err, "saving imported container specification for restore failed")
}
@@ -1221,7 +1142,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
return errors.Wrapf(err, "a complete checkpoint for this container cannot be found, cannot restore")
}
- if err := c.checkpointRestoreLabelLog("restore.log"); err != nil {
+ if err := crutils.CRCreateFileWithLabel(c.bundlePath(), "restore.log", c.MountLabel()); err != nil {
return err
}
@@ -1398,36 +1319,12 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti
// Before actually restarting the container, apply the root file-system changes
if !options.IgnoreRootfs {
- rootfsDiffPath := filepath.Join(c.bundlePath(), "rootfs-diff.tar")
- if _, err := os.Stat(rootfsDiffPath); err == nil {
- // Only do this if a rootfs-diff.tar actually exists
- rootfsDiffFile, err := os.Open(rootfsDiffPath)
- if err != nil {
- return errors.Wrap(err, "failed to open root file-system diff file")
- }
- defer rootfsDiffFile.Close()
- if err := c.runtime.ApplyDiffTarStream(c.ID(), rootfsDiffFile); err != nil {
- return errors.Wrapf(err, "failed to apply root file-system diff file %s", rootfsDiffPath)
- }
+ if err := crutils.CRApplyRootFsDiffTar(c.bundlePath(), c.state.Mountpoint); err != nil {
+ return err
}
- deletedFilesPath := filepath.Join(c.bundlePath(), "deleted.files")
- if _, err := os.Stat(deletedFilesPath); err == nil {
- var deletedFiles []string
- deletedFilesJSON, err := ioutil.ReadFile(deletedFilesPath)
- if err != nil {
- return errors.Wrapf(err, "failed to read deleted files file")
- }
- if err := json.Unmarshal(deletedFilesJSON, &deletedFiles); err != nil {
- return errors.Wrapf(err, "failed to unmarshal deleted files file %s", deletedFilesPath)
- }
- for _, deleteFile := range deletedFiles {
- // Using RemoveAll as deletedFiles, which is generated from 'podman diff'
- // lists completely deleted directories as a single entry: 'D /root'.
- err = os.RemoveAll(filepath.Join(c.state.Mountpoint, deleteFile))
- if err != nil {
- return errors.Wrapf(err, "failed to delete files from container %s during restore", c.ID())
- }
- }
+
+ if err := crutils.CRRemoveDeletedFiles(c.ID(), c.bundlePath(), c.state.Mountpoint); err != nil {
+ return err
}
}
diff --git a/libpod/oci_conmon_linux.go b/libpod/oci_conmon_linux.go
index de7630c06..492bc807a 100644
--- a/libpod/oci_conmon_linux.go
+++ b/libpod/oci_conmon_linux.go
@@ -28,6 +28,7 @@ import (
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/libpod/logs"
"github.com/containers/podman/v3/pkg/cgroups"
+ "github.com/containers/podman/v3/pkg/checkpoint/crutils"
"github.com/containers/podman/v3/pkg/errorhandling"
"github.com/containers/podman/v3/pkg/lookup"
"github.com/containers/podman/v3/pkg/rootless"
@@ -837,16 +838,7 @@ func (r *ConmonOCIRuntime) CheckConmonRunning(ctr *Container) (bool, error) {
// SupportsCheckpoint checks if the OCI runtime supports checkpointing
// containers.
func (r *ConmonOCIRuntime) SupportsCheckpoint() bool {
- // Check if the runtime implements checkpointing. Currently only
- // runc's checkpoint/restore implementation is supported.
- cmd := exec.Command(r.path, "checkpoint", "--help")
- if err := cmd.Start(); err != nil {
- return false
- }
- if err := cmd.Wait(); err == nil {
- return true
- }
- return false
+ return crutils.CRRuntimeSupportsCheckpointRestore(r.path)
}
// SupportsJSONErrors checks if the OCI runtime supports JSON-formatted error
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-15 14:27:33 +0000