diff options
Diffstat (limited to 'libpod')
| -rw-r--r-- | libpod/container_internal_linux.go | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go index aa477611f..77f607f0b 100644 --- a/libpod/container_internal_linux.go +++ b/libpod/container_internal_linux.go @@ -515,6 +515,25 @@ func (c *Container) exportCheckpoint(dest string) (err error) { return errors.Errorf("Cannot export checkpoints of containers with named volumes or dependencies") } logrus.Debugf("Exporting checkpoint image of container %q to %q", c.ID(), dest) + + // Get root file-system changes included in the checkpoint archive + rootfsDiffPath := filepath.Join(c.bundlePath(), "rootfs-diff.tar") + rootfsDiffFile, err := os.Create(rootfsDiffPath) + if err != nil { + return errors.Wrapf(err, "error creating root file-system diff file %q", rootfsDiffPath) + } + tarStream, err := c.runtime.GetDiffTarStream("", c.ID()) + if err != nil { + return errors.Wrapf(err, "error exporting root file-system diff to %q", rootfsDiffPath) + } + _, err = io.Copy(rootfsDiffFile, tarStream) + if err != nil { + return errors.Wrapf(err, "error exporting root file-system diff to %q", rootfsDiffPath) + } + tarStream.Close() + rootfsDiffFile.Close() + + input, err := archive.TarWithOptions(c.bundlePath(), &archive.TarOptions{ Compression: archive.Gzip, IncludeSourceDir: true, @@ -524,6 +543,7 @@ func (c *Container) exportCheckpoint(dest string) (err error) { "ctr.log", "config.dump", "spec.dump", + "rootfs-diff.tar", "network.status"}, }) @@ -546,6 +566,8 @@ func (c *Container) exportCheckpoint(dest string) (err error) { return err } + os.Remove(rootfsDiffPath) + return nil } @@ -792,6 +814,21 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti if err := c.saveSpec(g.Spec()); err != nil { return err } + + // Before actually restarting the container, apply the root file-system changes + 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.Wrapf(err, "Failed to open root file-system diff file %s", rootfsDiffPath) + } + if err := c.runtime.ApplyDiffTarStream(c.ID(), rootfsDiffFile); err != nil { + return errors.Wrapf(err, "Failed to apply root file-system diff file %s", rootfsDiffPath) + } + rootfsDiffFile.Close() + } + if err := c.ociRuntime.createContainer(c, c.config.CgroupParent, &options); err != nil { return err } @@ -809,7 +846,7 @@ func (c *Container) restore(ctx context.Context, options ContainerCheckpointOpti if err != nil { logrus.Debugf("Non-fatal: removal of checkpoint directory (%s) failed: %v", c.CheckpointPath(), err) } - cleanup := [...]string{"restore.log", "dump.log", "stats-dump", "stats-restore", "network.status"} + cleanup := [...]string{"restore.log", "dump.log", "stats-dump", "stats-restore", "network.status", "rootfs-diff.tar"} for _, del := range cleanup { file := filepath.Join(c.bundlePath(), del) err = os.Remove(file) |