Product update: Virtuozzo 7.0 Update 8 (7.0.8-486)

Issue date: 2018-08-07

Applies to: Virtuozzo 7.0

Virtuozzo Advisory ID: VZA-2018-051

1. Overview

The Update 8 for Virtuozzo 7.0 provides new features as well as stability and usability bug fixes.

2. New Features

  • Support of Ubuntu 18.04 in virtual machines. (PSBM-82931)

  • Live migration of VMs between datastores. You can now live-migrate virtual machines between datastores using the ‘prlctl move’ command. For more details, see the None

  • Fast path. This feature may boost Virtuozzo Storage read performance if node I/O is a bottleneck. In this case, enabling fast path may increase maximum node I/O up to 3 times in some cases. For more details, see the Virtuozzo Storage Administrator’s Command Line Guide. (PSBM-64450)

  • CRIU now supports live migration of containers running MariaDB with the ‘PrivateDevices=true’ option set. (PSBM-57362)

3. Bug Fixes

  • Node could crash with error in ‘mem_cgroup_iter’. (PSBM-75892)

  • Container running a Java process could fail to migrate live due to a CRUI issue. (PSBM-78762)

  • Container live migration could fail on the restoration stage with a CRIU error ‘Cannot create tun device’. (PSBM-79229)

  • Container live migration could fail with a CRIU error ‘mnt: Cannot open ./run/user/0: No such file or directory’. (PSBM-82221)

  • Container migration could fail with a CRIU error ‘uns: send resp error: Bad file descriptor’. (PSBM-82222)

  • Container live migration could fail due to a CRIU issue with bindmounted Unix sockets. (PSBM-82616)

  • VMs created in Virtuozzo Automator had no disk serial numbers. (PSBM-83606)

  • Containers could fail to start due to host running out of cgroups. (PSBM-83628)

  • Node could crash in shrink_slab() on attempt to mount a bad ext4 image. (PSBM-83691)

  • Nodes running Virtuozzo Storage could overload and slow down significantly due to insufficient default pagecache limit. (PSBM-84694)

  • Automatically assigned VNC port of a container could change on applying new configuration to said container. (PSBM-85959)

  • MAC/IP filtering did not prevent ARP spoofing. (PSBM-86140)

  • Other fixes. (PSBM-46610, PSBM-60161, PSBM-78310, PSBM-78703, PSBM-78973, PSBM-81706, PSBM-81809, PSBM-81937, PSBM-82254, PSBM-82313, PSBM-82404, PSBM-82615, PSBM-83154, PSBM-83161, PSBM-83224, PSBM-83266, PSBM-83369, PSBM-83383, PSBM-83581, PSBM-83615, PSBM-83624, PSBM-83746, PSBM-83783, PSBM-84005, PSBM-84028, PSBM-84943, PSBM-84967, PSBM-85005, PSBM-85109, PSBM-85797, PSBM-85844, PSBM-85975, PSBM-86053, PSBM-86077, PSBM-86093, PSBM-86446, PSBM-86498, PSBM-86509, PSBM-86568, PSBM-86638, PSBM-86706)

4. Installing the Update

Install the update by running ‘yum update’.

The JSON file with the list of new and updated packages is available at