Virtuozzo Infrastructure 7.3 Update 1 (7.3.1-54)¶
Issue date: 2026-05-15
Applies to: Virtuozzo Infrastructure 7.3
Virtuozzo Advisory ID: VZA-2026-013
1. Overview¶
This update introduces a new service for virtual machine migration between infrastructures, read-only project access, and support for additional guest operating systems. It also includes improvements to platform stability and reliability and addresses issues identified in previous releases.
2. New Features¶
[User management] Read-only project access. Added support for read-only access for self-service users. Administrators can manage view-only permissions via the admin panel and the vinfra command-line tool to enable secure troubleshooting and monitoring without granting full access.
[Compute service] Migration service (early access). Introduced a migration service that enables moving virtual machines and workloads between infrastructures. This feature is intended for evaluation purposes only and is not recommended for use in production environments. The feature is available in both the admin and self-service panels.
The initial release provides the following capabilities:
Migration of virtual machines from VMware vSphere
Agentless virtual machine migration
Changed Block Tracking (CBT) support
Operating system morphing
IP and MAC address preservation
Parallel migration support
To perform migrations, you must provide your own VMware Virtual Disk Development Kit (VDDK). For details, refer to the product documentation.
If you do not have access to a Broadcom account, contact our support team for assistance. To provide feedback about this feature, contact your account manager or email info@virtuozzo.com.
[Compute service] New guest OS support. Added support for Debian 13 and CentOS Stream 10.
3. Improvements¶
Improved reliability of week-long testing. The updated testing framework provides enhanced system load analysis, improved consistency and leak detection, better failure handling, scalable guest loaders, and more reliable long-duration test execution through automated log rotation and cluster state preservation.
4. Bug Fixes¶
A VM could fail to start or migrate after an NFS snapshot deletion timeout left inconsistent volume metadata. (VSTOR-118159)
Failed live migrations could leak compute placement reservations under heavy load. (VSTOR-119720)
A false low-disk alert could appear when several policies share the same erasure-coding scheme. (VSTOR-121112)
Chunked S3 uploads without a Content-Length header could return HTTP 400. (VSTOR-126176)
NetApp ONTAP volume scheduling could fail near LUN limits. (VSTOR-126598)
The PCI-enabled flag could remain after a cold resize to a flavor without PCI devices. (VSTOR-128162)
The Pure Storage driver could return empty volume statistics on new or lightly loaded arrays. (VSTOR-128551)
Fixed the limited-use text in the UI. (VSTOR-128693)
Incorrect physical core count could be reported on asymmetric NUMA hosts. (VSTOR-128762)
Archive migration via ARP with redirects could fail during upstream authentication for pull operations. (VSTOR-129264)
The Cinder default scheduler could omit the driver filter and goodness weigher during volume placement. (VSTOR-130186)
Live resize could be unavailable when the Nova API ran only on controller nodes without the compute role. (VSTOR-130609)