func cleanDockerGraph(graphDir string, v versionutil.Version) error {
logrus.Debugf("Cleaning for version %s", v)
// Handle migration files
migratedVersion := versionutil.StaticVersion(1, 10, 0)
migratedVersion.Tag = "dev"
if v.LessThan(migratedVersion) {
if err := removeIfExists(filepath.Join(graphDir, ".migration-v1-images.json")); err != nil {
return err
}
if err := removeIfExists(filepath.Join(graphDir, ".migration-v1-tags")); err != nil {
return err
}
root := filepath.Join(graphDir, "graph")
migrationPurger := func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if !info.IsDir() {
if strings.HasPrefix(filepath.Base(path), ".migrat") {
logrus.Debugf("Removing migration file %s", path)
if err := os.Remove(path); err != nil {
return err
}
}
}
return nil
}
if err := filepath.Walk(root, migrationPurger); err != nil {
return err
}
// Remove all containers
infos, err := ioutil.ReadDir(filepath.Join(graphDir, "containers"))
if err != nil {
if os.IsNotExist(err) {
return nil
}
return err
}
drivers, err := getAllGraphDrivers(graphDir)
if err != nil {
return err
}
for _, info := range infos {
container := info.Name()
for _, graphDriver := range drivers {
if err := removeLayerGraphContent(container, "mount-id", graphDriver, graphDir); err != nil && !os.IsNotExist(err) {
return err
}
if err := removeLayerGraphContent(container, "init-id", graphDriver, graphDir); err != nil && !os.IsNotExist(err) {
return err
}
}
if err := os.RemoveAll(filepath.Join(graphDir, "containers", container)); err != nil {
return err
}
}
if err := os.RemoveAll(filepath.Join(graphDir, "image")); err != nil {
return err
}
if err := removeIfExists(filepath.Join(graphDir, "linkgraph.db")); err != nil {
return err
}
// TODO: Remove everything in graph driver directory which is not in graph
}
return nil
}
