LGL-HDA: Feasibility Assessment for Closed OpenVZ-to-PVE Migration

Background

• In 2025Q2, LGL-HDA supported a customer running Comboware Virtuozzo/OpenVZ.
• The environment was highly closed: no hypervisor-level image export path was available; backups could only be generated from software installed inside each VM.
• WalksCloud accepted a technical assessment role only and did not operate as internal staff for the SI.

Challenges

1. No direct VM export path: backup files existed, but there was no standard OVF/OVA-style handoff from hypervisor layer.
2. Coordination boundary risk: engagement structure restricted direct end-customer interaction.
3. Multi-stage conversion overhead: OpenVZ and PVE were not directly interchangeable.

WalksCloud assessment method

1. Backup to ESXi restoration validation

   • Used VM-internal backup artifacts and restore tooling to reconstruct workloads on ESXi.
   • Verified restored VM boot and application availability.

2. ESXi to PVE transition validation

   • Exported VM to standard transfer formats from ESXi and imported into PVE.
   • Verified boot, login, and service continuity on PVE.

3. Feasibility reporting

   • Reported that migration was feasible, but required a multi-step path: OpenVZ to ESXi to PVE.
   • Clarified that single-hop direct conversion was not achievable under current environment constraints.

Outcome

• Technical feasibility was confirmed through staged conversion validation.
• After receiving the assessment, LGL-HDA did not start a follow-up execution project during this phase.
• WalksCloud closed the engagement at the advisory and validation boundary.