• Article for your preferred language does not exist. Below is international version of the article.

Article ID: 6966, created on Dec 3, 2009, last review on Apr 19, 2012

Release notes

--------------------------------------------------------------------------------
Synopsis:         New Virtuozzo Containers 4.0 kernel provides a fix for an
                           important stability issue.
Issue date:       2009-11-27
Product:            Parallels Virtuozzo Containers 4.0
Keywords:        'stability fix'

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

This document provides information on the new Virtuozzo Containers 4.0 kernel,
version 2.6.18-028stab066.8.

© 1999-2009 Parallels Holdings, Ltd. and its affiliates. 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
7. Reference List

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

1. ABOUT THIS RELEASE

The current update for the Virtuozzo Containers 4.0 kernel provides a fix for an
important stability issue.

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

2. UPDATES DESCRIPTION

The updated Virtuozzo Containers 4.0 kernel includes a fix for the following
stability issue introduced in the 2.6.18-164.6.1.el5 Red Hat kernel:

- A Hardware Node may hang if the freeze_bdev() kernel function is being called
  by a kernel module and, at the same time, some file memory mapping is being
  COWed on a device passed to this function as one of its arguments.

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

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

3. BUGS FIXED

The following bug from the previous release has been fixed in the new Virtuozzo
Containers 4.0 kernel:

- #458820: A node may hang after performing some backup and restore operations.

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

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, perform the following operations:

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

# rpm -ivh vzkernel-2.6.18-028stab066.8.x86_64.rpm \
vzmodules-2.6.18-028stab066.8.x86_64.rpm
Preparing...                ################################# [100%]
    1:vzkernel               ################################# [33%]
    2:vzmodules              ################################# [67%]

    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 processor installed on the Hardware Node, the following RPM
packages are included in the kernel update:

x86 kernels:

- SMP:
   vzkernel-2.6.18-028stab066.8.i686.rpm
   vzmodules-2.6.18-028stab066.8.i686.rpm

- Enterprise:
   vzkernel-ent-2.6.18-028stab066.8.i686.rpm
   vzmodules-ent-2.6.18-028stab066.8.i686.rpm

- Enterprise with the 4GB split feature disabled:
   vzkernel-PAE-2.6.18-028stab066.8.i686.rpm
   vzmodules-PAE-2.6.18-028stab066.8.i686.rpm


x86_64 kernels:

- SMP:
   vzkernel-2.6.18-028stab066.8.x86_64.rpm
   vzmodules-2.6.18-028stab066.8.x86_64.rpm

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

7. REFERENCE LIST

https://bugzilla.redhat.com/show_bug.cgi?id=541956

Email subscription for changes to this article
Save as PDF