Article ID: 6994, created on Dec 9, 2009, last review on May 3, 2014

  • Applies to:
  • Virtuozzo containers for Linux 4.0

Release notes

--------------------------------------------------------------------------------
Synopsis:          New Parallels Virtuozzo Containers 4.0 kernel provides a
                            number of important stability and compatibility fixes.
Issue date:        2009-12-04
Product:             Parallels Virtuozzo Containers 4.0
Keywords:         'stability fixes' 'new templates'

--------------------------------------------------------------------------------

This document provides information on the new Virtuozzo Containers 4.0 kernel,
version 2.6.18-028stab066.10.

© 1999-2009 Parallels, Inc. All rights reserved.

--------------------------------------------------------------------------------
TABLE OF CONTENTS

1. About This Release
2. Updates Description
3. Bugs Fixed
4. Obtaining New Kernel
5. Installing New Kernel
6. Required RPMs

--------------------------------------------------------------------------------

1. ABOUT THIS RELEASE

The current update for the Virtuozzo Containers 4.0 kernel provides a new kernel
based on the Red Hat 5 kernel (2.6.18-164.2.1.el5). The updated kernel includes
a number of important stability and compatibility fixes.

--------------------------------------------------------------------------------

2. UPDATES DESCRIPTION

The updated Virtuozzo Containers 4.0 kernel includes fixes for the following
stability and compatibility issues:

- A potential crash in NFS may occur if an application tries to write to
  a file using an uninitialized variable.

- A kernel crash may occur when flushing pages to the disk in the background.

- When restaring the network, Containers based on the Fedora 12 OS template
  may not automatically bring up loopback interfaces.

We highly recommend that all Parallels Virtuozzo Containers 4.0 users update
their kernel to the latest version.
--------------------------------------------------------------------------------

3. BUGS FIXED

The following bugs from the previous release have been fixed in the new
Virtuozzo Containers 4.0 kernel:

#459429: Oops in NFS while writing to a file.

#459261: Bug in CFQ under a high IO load.

#459366: No IPv4 loopback address on 'Fedora 12'-based Containers after
         restarting the network.

--------------------------------------------------------------------------------

4. OBTAINING NEW KERNEL

You can download and install the kernel update by using the vzup2date utility
included in the Parallels Virtuozzo Containers 4.0 distribution set.

--------------------------------------------------------------------------------

5. INSTALLING NEW KERNEL

To install the update, you should perform the following operations:

I. Use the "rpm -ihv" command to install the new kernel and Virtuozzo modules.

# rpm -ivh vzkernel-2.6.18-028stab066.10.i686.rpm \
vzmodules-2.6.18-028stab066.10.i686.rpm
Preparing...                ################################# [100%]
    1:vzkernel               ################################# [50%]
    2:vzmodules              ################################# [100%]

    Please DO NOT USE the "rpm -Uhv" command to install the kernel. Otherwise,
    all the kernels previously installed on your system may be removed from
    the Hardware Node.

II. You can adjust your boot loader configuration file to have the new kernel
    loaded by default. If you use the LILO bootloader, please do not forget to
    execute the 'lilo' command to write the changes to the boot sector:

     # lilo
     Added Virtuozzo2 *
     Added Virtuozzo1
     Added linux
     Added linux-up

III. Reboot your computer with the "shutdown -r now" command to boot the new
     kernel.

--------------------------------------------------------------------------------

6. REQUIRED RPMS

Depending on the kind of processor on your Hardware Node, the following RPM
packages are included in the kernel update:

x86 kernels:

- SMP:
   vzkernel-2.6.18-028stab066.10.i686.rpm
   vzmodules-2.6.18-028stab066.10.i686.rpm

- Enterprise:
   vzkernel-ent-2.6.18-028stab066.10.i686.rpm
   vzmodules-ent-2.6.18-028stab066.10.i686.rpm

- Enterprise with the 4GB split feature disabled:
   vzkernel-PAE-2.6.18-028stab066.10.i686.rpm
   vzmodules-PAE-2.6.18-028stab066.10.i686.rpm


x86_64 kernels:

- SMP:
   vzkernel-2.6.18-028stab066.10.x86_64.rpm
   vzmodules-2.6.18-028stab066.10.x86_64.rpm

35c16f1fded8e42577cb3df16429c57a d02f9caf3e11b191a38179103495106f e8e50b42231236b82df27684e7ec0beb 2897d76d56d2010f4e3a28f864d69223

Email subscription for changes to this article
Save as PDF