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Code Issues Releases Wiki Activity

Fix setting up state partition

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This commit is contained in:
Darren Shepherd
2015-08-28 21:13:01 -07:00
parent f8b92797d0
commit 0f1b7741d7
1 changed files with 51 additions and 8 deletions
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59
init/root.go
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@@ -5,6 +5,7 @@ import (
"io/ioutil"
"os"
"path"
"strings"
"syscall"
log "github.com/Sirupsen/logrus"
@@ -13,25 +14,67 @@ import (
"github.com/rancherio/os/config"
)
func prepareRoot(rootfs string) error {
usr := path.Join(rootfs, "usr")
if err := os.Remove(usr); err != nil && !os.IsNotExist(err) {
log.Errorf("Failed to delete %s, possibly invalid RancherOS state partition: %v", usr, err)
return err
func cleanupTarget(rootfs, targetUsr, usr, usrVer, tmpDir string) (bool, error) {
log.Debugf("Deleting %s", targetUsr)
if err := os.Remove(targetUsr); err != nil && !os.IsNotExist(err) {
log.Errorf("Failed to delete %s, possibly invalid RancherOS state partition: %v", targetUsr, err)
return false, err
}
return nil
if err := dockerlaunch.CreateSymlink(usrVer, path.Join(rootfs, "usr")); err != nil {
return false, err
}
log.Debugf("Deleting %s", tmpDir)
if err := os.RemoveAll(tmpDir); err != nil {
// Don't care if this fails
log.Errorf("Failed to cleanup temp directory %s: %v", tmpDir, err)
}
if strings.HasSuffix(usrVer, "dev") {
log.Debugf("Deleteing old usr: %s", usr)
if err := os.RemoveAll(usr); err != nil {
// Don't care if this fails
log.Errorf("Failed to remove %s: %v", usr, err)
}
return true, nil
}
if _, err := os.Stat(usrVer); os.IsNotExist(err) {
return false, nil
}
return true, nil
}
func copyMoveRoot(rootfs string) error {
usrVer := fmt.Sprintf("usr-%s", config.VERSION)
usr := path.Join(rootfs, usrVer)
targetUsr := path.Join(rootfs, "usr")
tmpDir := path.Join(rootfs, "tmp")
if err := archive.CopyWithTar("/usr", usr); err != nil {
if cont, err := cleanupTarget(rootfs, targetUsr, usr, usrVer, tmpDir); !cont {
return err
}
if err := dockerlaunch.CreateSymlink(usrVer, path.Join(rootfs, "usr")); err != nil {
log.Debugf("Creating temp dir directory %s", tmpDir)
if err := os.MkdirAll(tmpDir, 0755); err != nil {
return err
}
usrVerTmp, err := ioutil.TempDir(tmpDir, usrVer)
if err != nil {
return err
}
log.Debugf("Copying to temp dir %s", usrVerTmp)
if err := archive.CopyWithTar("/usr", usrVerTmp); err != nil {
return err
}
log.Debugf("Renaming %s => %s", usrVerTmp, usr)
if err := os.Rename(usrVerTmp, usr); err != nil {
return err
}