Parallels Virtualization and Automation Software

VZU400004 update for Parallels Virtuozzo Containers 4.0

Release notes

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Synopsis: New Parallels Virtuozzo Containers 4.0 update provides fixes related to SystemCache usage
Issue date: 2008-04-28
Product: Parallels Virtuozzo Containers 4.0
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1. Topic:

Update for Parallels Virtuozzo Containers optimizes kernel memory usage by Virtuozzo internal structures.

2. Problem description:

- Under high load kernel resources are used intensively which might lead to SystemCache shortage on 32-bit nodes. Such a shortage might be indicated in the System event log by by an error “An I/O operation initiated by the Registry failed unrecoverably. The Registry could not read in, or write out, or flush, one of the files that contain the system's image of the Registry.” (Event ID: 333). The update optimizes usage of SystemCache by containers’ registry.

All Parallels Virtuozzo Containers 4.0 users are advised to update their Virtuozzo node.

3. Affected components description:

- Containers’ registry, Virtuozzo core

4. Bug fixes:

None

5. New Microsoft updates are available to install on the node after the current update installation:

KB941693

6: New Citrix updates are supported for installation iside VEs after the current update installation:

None

7. Obtaining and Installation:

On the Virtuozzo Windows host, run Virtuozzo Update Wizard  (vzupdate.exe)  and follow the instructions.   This wizard will install all the recent Virtuozzo updates and hotfixes in the correct sequence. Otherwise you can install Virtuozzo updates manually.

Please see how to check current Virtuozzo version and number of installed Virtuozzo updates.