Article ID: 124406, created on Feb 6, 2015, last review on Jun 17, 2016

  • Applies to:
  • Virtuozzo 6.0

Issue date: 2015-02-06

1. What's Included in This Update

The new packages for Virtuozzo (formerly Parallels Cloud Server) 6.0 provide stability and usability fixes for virtual machine and Container management tools and Virtuozzo Storage.

2. Bug Fixes

  • A Hardware Node could crash while caching the openSUSE 12.2 OS template due to a bug introduced in vzpkgenvzypp49-6.0.8-9. (#PSBM-31265, #PSBM-31275)

  • Updating to pstorage-6.0.8-38 with hotplugging enabled could result in chunk server loss. (#PSBM-31341)

3. Known Issues

  • The prlctl utility does not support some of the Container operations supported by vzctl in the previous versions of Virtuozzo hypervisor. To perform such operations, use the vzctl utility instead of prlctl.

  • The offline management feature does not work for Containers operating in the bridged networking mode. For details, see the KB article at .

  • The offline management feature might not work for running virtual machines that operate in the bridged networking mode. The reason for this is that the destination MAC address in incoming offline management packets is changed when the packets are processed on the Odin server. As a result, the processed packets contain a source MAC address different from the destination one in incoming packets and might be dropped by your router. To solve the problem, reconfigure the router to accept packets with the same IP address but different MAC addresses. As an alternative, you can set the network adapter of a virtual machine to operate in the host-routed mode.

  • Setting encrypted passwords for containers that run Ubuntu 10.04 is not supported. To work around the problem, set the password in plain text. For more details, see .

  • Cannot establish IPsec connections from Virtuozzo Hardware Node to Containers. For more information, see .

  • Containers with multiple virtual hard disks cannot be backed up or restored via Virtual Automation or using the vzabackup/vzarestore commands.

  • An issue in the E1000 network driver may cause network on Windows Server 2012 R2 Update 1 virtual machines to stop working. For more details, see .

  • C2V migration of Containers created in Virtuozzo containers for Windows 6.0 fails. (#PCWIN-21321)

  • Converting a Hyper-V virtual machine to a Odin virtual machine may fail. To work around the problem, use the --allow-no-os option when converting the virtual machine. (#PSBM-7201)

  • Creating a virtual machine in Virtuozzo 6.0 set up in a Parallels Desktop for Mac virtual machine may take a long time. (#PSBM-8528)

  • Using the WMI console is not supported in Windows virtual machines that you enter with the prlctl enter command. For more information on how to work around the problem, see . (#PSBM-9811)

  • A Linux virtual machine with less than 4 GB of RAM may hang on start-up. To work around the problem, use the iommu=soft option when booting the virtual machine. For details, see . (#PSBM-11807)

  • Creating snapshots of a Container that has at least one prlctl enter or prlctl exec session open is not supported. To make a snapshot, close the open sessions first. (#PSBM-11871)

  • Xen virtual machines cannot be migrated to Virtuozzo virtual machines. (#PSBM-12122)

  • Virtuozzo may freeze a container trying to consume more disk space than you allocated to it. To solve the problem, increase the amount of disk space for the affected Container. (#PSBM-12213)

  • The Bash echo command does not report an error when trying to write to a file located on a Virtuozzo storage cluster, even if the cluster does not have enough free space. (#PSBM-12621)

  • Soft lockups in the Linux kernel, up to version 2.6.37, may occur on stopping virtual machines. For more information, see . (#PSBM-13963)

  • Traffic shaping may not work for bridged virtual network adapters on physical servers with Open vSwitch enabled. (#PSBM-14260)

  • It is impossible to use the iptables functionality on physical servers with Open vSwitch bridges enabled. (#PSBM-14334)

  • On systems upgraded from Virtuozzo hypervisor 4 to Virtuozzo 6.0, prlctl list –a may not show the IP addresses of container-bridged network adapters. To view such IP addresses, use the vzlist –o IP command. (#PSBM-14528)

  • Running virtual machines with Windows Server 2012 and Windows 8 is supported only on servers that have CPUs with the NX (No-eXecute) feature enabled. For details, see . (#PSBM-14837)

  • Backing up a virtual machine with large virtual disks stored on an LVM partition may take a long time. (#PSBM-14971)

  • Running the Iometer tool in a virtual machine with Windows and a small amount of RAM may cause the virtual machine to crash. To work around the problem, increase the amount of RAM or swap allocated to the virtual machine. (#PSBM-15403)

  • The ebtables rules are flushed after restarting the ebtables service. (#PSBM-15641)

  • Creating a cache with updates may fail for containers that run Red Hat Enterprise Linux 5. (#PSBM-15707)

  • Cannot migrate a Container with over 2TB of data to a virtual machine. (#PSBM-21613)

  • On 32-bit Linux guest operating systems, the maximum size of a virtual hard disk was limited to 17592186040320 bytes (16 TiB - 4 KiB). (#PSBM-22193)

  • Migration of physical Linux hosts which use EFI and GPT to virtual machines is not supported. (#PSBM-24118)

  • Cannot migrate Virtuozzo Containers for Windows 4.5 hardware nodes to virtual machines. (#PSBM-29576)

  • Attached backups are not reattached on Odin services restart. (#PSBM-29647)

  • The vzctl utility does not recognize backups attached to virtual machines or Containers. (#PSBM-29752)

4. Deprecated Features

Features considered deprecated will be removed in the next major release of Virtuozzo. They will, however, work and remain supported in Virtuozzo 6.0. The following features are deprecated:

  • The Virtuozzo file system (VZFS). For more information, see .

  • Migration of physical servers to Containers and migration of Xen virtual machines to virtual machines. For more information, see .

  • The vzbackup, vzabackup, and pbackup utilities. For more information, see .

  • The global iptables mask configured in /etc/sysconfig/vz.

  • All UBC resources except physpages and swappages. (#PSBM-24231)

  • The vziptables parameter configured in the kickstart file used for unattended installations of Virtuozzo. (#PSBM-27566)

All users are advised to update their tools packages.

5. Obtaining the Update

You can download and install the update using the yum utility included in the Virtuozzo (formerly Parallels Cloud Server) 6.0 distribution.

Copyright (c) 1999-2015 Parallels IP Holdings GmbH and its affiliates. All rights reserved.

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