− | Currently, vzctl supports CRIU for checkpoint/restore of upstream containers (i.e. when non-OpenVZ kernel is used). Commands <code>vzctl suspend</code> and <code>vzctl restore</code> fully work. Live migration doesn't work yet as it requires support for <code>vzctl suspend {--suspend, --dump, --kill, --restore}</code> which is not yet implemented as it requires a separate daemon to hold the state of a partially checkpointed container (or an ability from criu tool to do that).
| + | As of Virtuozzo 7, CRIU is fully integrated and supported. Older OpenVZ releases used in-kernel checkpoint/restore functionality, now superseded by CRIU. |