Article ID: 8571, created on Jun 3, 2010, last review on Apr 17, 2012

  • Applies to:
  • Virtuozzo containers for Linux 4.0

Release notes

Synopsis:          New Parallels Virtuozzo Containers 4.0 tools update provides
                            fixes related to Container management functionality.
Issue date:        2010-05-26
Product:             Parallels Virtuozzo Containers 4.0
Keywords:         'vzctl' 'vzmigrate' 'vztt' 'vzstat'

1. What's Included in This Update

Updated packages for Parallels Virtuozzo Containers 4.0 provide the following
user-level tool fixes:
 - managing Containers using the 'vzctl' utility
 - moving Containers using the 'vzmigrate' and 'vzmlocal' utilities
 - managing EZ templates using the 'vzpkg' utility

2. Problem Description

The updated packages include fixes for the following issues:

 - The EZ templates management functionality in a Container may not work after
   migrating the Container to a Node that does not have the necessary
   application EZ templates installed.

 - Under certain conditions, a cloned Container may contain some broken files.
 - Caching an OS EZ template may fail if the second-level quota limit is set in
   the Virtuozzo global configuration file.

 - Customized Network Information Service (NIS) domain names are reset to
   Containers' hostnames after their restart.

The new packages also introduce the following enhancements:

 - The vzstat utility now shows a more accurate CPU usage statistics.

 - The ability to get information periodically in both the batch and text modes
   has been added to the vzstat utility.

 All Parallels Containers 4.0 users are advised to update their tools packages.

3. Affected Components

 - 'vzctl' is the primary tool for managing Containers. This tool is used
   to create new Containers, start and stop them, configure their parameters,

 - 'vzmigrate' is a utility for migrating Containers from one Hardware Node to

 - 'vzmlocal' is a utility for moving and copying Containers within the same
   Hardware Node.

 - 'vztt' is a set of tools used to manage EZ templates. EZ templates introduced
   in Virtuozzo 3.0 are more flexible and easier to manage compared to standard

 - vzstat is a set of tools used to monitor the state of Hardware Nodes and
   their Containers.

4. Bug Fixes

 #438216: Application EZ templates are not migrated to the Destination Node.

 #475947: VZFS gets corrupted after upgrading Containers to Ubuntu-10.04.

 #455730: vzctl should skip 2nd level quota settings if "--skip_ve_setup" is

 #475767: NIS domain names are reset inside Containers.

5. Obtaining Update

 You can download and install this tools update using the 'vzup2date' utility
 included in the Parallels Containers 4.0 distribution.

6. Installing Update

 Use the 'vzup2date' command to install the new Parallels Virtuozzo tools

 The update does not require Parallels Containers restart or system reboot.

7. RPMs required:

 The following RPM packages are included in the tools update:


Copyright © 1999-2010 Parallels Holdings, Ltd. and its affiliates. All rights

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