Article ID: 111139, created on Apr 14, 2011, last review on May 10, 2014

  • Applies to:
  • Virtuozzo containers for Linux 4.6

Release notes


--------------------------------------------------------------------------------
Synopsis:          New Parallels Virtuozzo Containers 4.6 kernel provides
                   several important stability and performance fixes.
Issue date:        2011-04-15
Product:           Parallels Virtuozzo Containers 4.6
Keywords:          'bugfix' 'load average' 'NFSD'

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

This document provides information on the new Virtuozzo Containers 4.6 kernel,
version 2.6.18-028stab085.5.

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

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

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

1. ABOUT THIS RELEASE

The current update for the Virtuozzo Containers 4.6 kernel provides several
important stability and performance fixes.

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

2. UPDATES DESCRIPTION

This update contains fixes for the following issues:

* gettimeofday() might work incorrectly on systems that run kernel
  2.6.18-028stab085.3 and use the PM timer. This may affect your system in
  different ways, for example:
  - In some applications, time may go backward, causing segmentation faults.
  - "top" might show very high load average values.
  - JAVA processes may hang.
  (PCLIN-28962)

* Running Containers with the CPULIMIT parameter set may cause the "top" utility
  to report high load average values and degrade the performance of applications
  running in these Containers. (PSBM-7334)

* An NFS server may delay transmitting notifications to NFS clients that new
  files are available in the exported volume if these files were created
  in the Container hosting this NFS server. (PCLIN-28763)

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

3. OBTAINING NEW KERNEL

You can download and install this kernel update using the vzup2date utility
included in the Parallels Virtuozzo Containers 4.6 distribution set.

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

4. INSTALLING NEW KERNEL

To install the update, do the following:

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

# rpm -ivh vzkernel-2.6.18-028stab085.5.i686.rpm \
vzmodules-2.6.18-028stab085.5.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.

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

5. 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-2.6.18-028stab085.5.i686.rpm
   vzmodules-2.6.18-028stab085.5.i686.rpm

- Enterprise:
   vzkernel-ent-2.6.18-028stab085.5.i686.rpm
   vzmodules-ent-2.6.18-028stab085.5.i686.rpm

- Enterprise with the 4GB split feature disabled:
   vzkernel-PAE-2.6.18-028stab085.5.i686.rpm
   vzmodules-PAE-2.6.18-028stab085.5.i686.rpm


x86_64 kernels:

- SMP:
   vzkernel-2.6.18-028stab085.5.x86_64.rpm
   vzmodules-2.6.18-028stab085.5.x86_64.rpm

--------------------------------------------------------------------------------
Copyright (c) 1999-2011 Parallels Holdings, Ltd. and its affiliates. All rights
reserved.
 

36627b12981f68a16405a79233409a5e d02f9caf3e11b191a38179103495106f e8e50b42231236b82df27684e7ec0beb 2897d76d56d2010f4e3a28f864d69223

Email subscription for changes to this article
Save as PDF