Function instanceDebugRepairRebuildConfigVolume

cmd/incusd/instance_debug.go:237–301

(s *state.State, inst instance.Instance)

}

func instanceDebugRepairRebuildConfigVolume(s *state.State, inst instance.Instance) error {
	// Initial validation.
	if inst.Type() != instancetype.VM {
		return errors.New("Config volume rebuild is only possible on VMs")
	}

	if inst.IsRunning() {
		return errors.New("Config volume rebuild is only possible on stopped VMs")
	}

	// Load the storage pool.
	pool, err := storagePools.LoadByInstance(s, inst)
	if err != nil {
		return err
	}

	// Load the volume.
	dbVol, err := storagePools.VolumeDBGet(pool, inst.Project().Name, inst.Name(), storageDrivers.VolumeTypeVM)
	if err != nil {
		return err
	}

	if dbVol.Config["block.type"] != "qcow2" {
		return errors.New("Config volume rebuild is only possible on QCOW2 backed VMs")
	}

	volStorageName := project.Instance(inst.Project().Name, inst.Name())
	vol := pool.GetVolume(storageDrivers.VolumeTypeVM, storageDrivers.ContentTypeFS, volStorageName, dbVol.Config)

	// Re-create the filesystem.
	err = pool.Driver().ActivateTask(vol, func(devPath string, op *operations.Operation) error {
		_, err = subprocess.RunCommand("mkfs.btrfs", "-f", devPath)
		if err != nil {
			return err
		}

		return nil
	}, nil)
	if err != nil {
		return err
	}

	// Re-configure the sub-volumes.
	err = storageDrivers.Qcow2CreateConfig(vol, nil)
	if err != nil {
		return err
	}

	snaps, err := inst.Snapshots()
	if err != nil {
		return err
	}

	for _, snap := range snaps {
		snapVolStorageName := project.Instance(snap.Project().Name, snap.Name())
		snapVol := pool.GetVolume(storageDrivers.VolumeTypeVM, storageDrivers.ContentTypeFS, snapVolStorageName, dbVol.Config)

		err = storageDrivers.Qcow2CreateConfigSnapshot(vol, snapVol, nil)