Article ID: 118869, created on Nov 26, 2013, last review on Jun 17, 2016

  • Applies to:
  • Virtuozzo 6.0

Release notes


Synopsis: The Service Pack 1 for Parallels Cloud Server 6.0 introduces new features and provides stability and usability fixes.
Issue date: 2013-12-04
Product: Parallels Cloud Server 6.0
Keywords: 'stability' 'usability'


  1. What's Included in the Service Pack 1

    The Service Pack 1 for Parallels Cloud Server 6.0 introduces new features and provides fixes which improve the functionality of virtual machines, Containers, and Parallels Cloud Storage.

  2. New Features

    The Service Pack 1 introduces the following key features:

    • The maximum size of virtual hard disks supported by Containers and virtual machines has increased to 16 TB (#PSBM-15670).
    • The new global memory consumption limit (#PSBM-17887).

      The new limit makes sure that no backup, restore, or migration operation will occupy too much of the Node's memory, potentially leading to an out-of-memory situation. You can set it via the VZ_TOOLS_MEMLIMIT parameter of the global configuration file /etc/vz/vz.conf.

    • The new user-friendly list of chunk and metadata server paths (#PSBM-20877).

      Using the pstorage list-services command, you can now easily locate CS and MDS servers on storage devices attached to your Parallels Cloud Storage cluster.

    • The new DRS relocation mode for High Availability clusters (#PSBM-21305).

      In the new resource relocation mode, virtual machines and Containers which were running on a failed Hardware Node are relocated to healthy Nodes based on available RAM and license capacity.

  3. Bug Fixes

    The Service Pack 1 contains fixes for the following issues:

    • Required libraries missing in the Parallels Transporter installer for Parallels Virtuozzo Containers for Windows (#PSBM-20968).

    • The vzpkg update command fails to install new packages added to an EZ template (#PSBM-21459).

    • The prlctl exec command could hang in POA installations (#PSBM-22075).

    • dd oflag=dsync works slowly in ploop Containers if the ploop grows (#PSBM-22381).

    • Shared migration fails because a Container with the same ID or root path exists at destination (#PSBM-22889).

    • Unable to fill a pre-allocated image above 2TB (#PSBM-22961).

    • A non-sparse ploop image could become sparse during migration (#PSBM-22993).

    • vzreboot causes soft lockups (#PSBM-23189).

    • Parallels Virtual Automation shows incorrect placement of relocated resources (#PSBM-23202).

    • Container replication issues on a hard disk failure (#PSBM-23325).

    • No callback from parallels-server to PACI IM after migration or backup (#PSBM-23338).

    • Virtual machine restoration slowed by processing of devices listed in /proc/devices (#PSBM-23489).

    • A number of minor issues (#PSBM-15095, #PSBM-20022, #PSBM-20250, #PSBM-20614, #PSBM-20905, #PSBM-21109, #PSBM-21111, #PSBM-21309, #PSBM-21891, #PSBM-21894, #PSBM-21937, #PSBM-22083, #PSBM-22215, #PSBM-22240, #PSBM-22374, #PSBM-22376, #PSBM-22392, #PSBM-22492, #PSBM-22707, #PSBM-22778, #PSBM-22780, #PSBM-22828, #PSBM-22879, #PSBM-23037, #PSBM-23097, #PSBM-23229, #PSBM-23505, #PSBM-23523, #PSBM-23532).
  4. Known Issues

    • Cannot migrate a physical server with a 16TB HDD running CentOS 6.4 x64 to a virtual machine (#PSBM-21244).

    • 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 is limited to 17592186040320 bytes (16 TiB - 4 KiB) (#PSBM-22193).
  5. Deprecated Features

    Features considered deprecated will be removed in the next major release of Parallels Cloud Server. They will, however, work and remain supported in Parallels Cloud Server 6.0.

    The following features are deprecated:

    • The Virtuozzo file system (VZFS). For more information, see KB #119015.

    • Migration of physical servers to Containers and migration of Xen virtual machines to virtual machines. For more information, see KB #119016.

    • The vzbackup, vzabackup, and pbackup utilities. For more information, see KB #119017.

    All Parallels Cloud Server 6.0 users are advised to update their tools packages.

  6. Obtaining the Service Pack 1

    You can download and install the Service Pack 1 using the yum utility included in the Parallels Cloud Server 6.0 distribution.


Copyright (c) 1999-2013 Parallels Holdings, Ltd. and its affiliates. All rights reserved.

Search Words

PSBM-21309

PSBM-17887

PSBM-22492

PSBM-20968

VZ_TOOLS_MEMLIMIT

PSBM-23097

PSBM-23202

PSBM-23523

PSBM-21459

PSBM-21109

PSBM-22780

PSBM-22075

PSBM-23532

PSBM-22392

PSBM-22961

PSBM-22381

PSBM-20250

PSBM-22215

PSBM-21891

PSBM-22993

PSBM-20877

PSBM-15670

PSBM-21111

PSBM-21244

PSBM-22376

PSBM-21305

PSBM-21894

PSBM-21613

PSBM-20614

PSBM-21937

PSBM-23189

PSBM-20905

PSBM-22828

PSBM-15095

PSBM-22083

PSBM-22707

PSBM-23229

PSBM-22374

PSBM-23489

PSBM-20022

PSBM-22889

PSBM-22193

PSBM-23037

PSBM-22778

PSBM-22240

PSBM-23505

PSBM-22879

PSBM-23338

PSBM-23325

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