Article ID: 121764, created on May 26, 2014, last review on Jun 23, 2014

  • Applies to:
  • Virtuozzo hypervisor 5.0
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Synopsis:          A new Parallels Server Bare Metal 5.0 kernel
                   update addressing security, performance, and
                   stability issues.
Product:           Parallels Server Bare Metal 5.0
Keywords:          'bugfix' 'stability' 'security'
 
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This document provides information on the new Parallels Server Bare Metal 5.0 kernel, version 2.6.32-042stab090.2.
 
CONTENTS
 
1. About This Update
2. Update Description
3. Obtaining the New Kernel
4. References
 
1. ABOUT THIS UPDATE
 
The current update for the Parallels Server Bare Metal 5.0 kernel provides a new kernel based on the Red Hat Enterprise Linux 6.5 kernel (2.6.32-431.17.1.el6). The updated kernel includes a number of security, performance, and stability fixes.
 
2. UPDATE DESCRIPTION
 
This update includes the following fixes and improvements:
 
- Checkpointing code was enhanced to support ip6tables rules saving and restoring (PSBM-25872, OVZ# 2916).
 
- Various kernel panics caused by stack overflow could be triggered by high disk I/O activity (PSBM-23683, OVZ# 2846).
 
- The "numabalanced" service is designed to move Containers between NUMA nodes in order to increase overall system performance. Previously, such migrations resulted in confusingly huge values of "numastat:node_other" and "numastat:numa_miss" parameters (PSBM-26309).
 
- Network console configured via bonded network interface could cause kernel panic (PSBM-26668).
 
3. OBTAINING THE NEW KERNEL
 
You can download and install this kernel update using the vzup2date utility included in the Parallels Server Bare Metal 5.0 distribution set.
 
4. REFERENCES
 
 
 
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