Archive for the ‘Operating Systems’ Category

Memory Hot Add for Virtual Machine

Posted on March 20th, 2009 in Operating Systems, vCenter, vSphere | 1 Comment »

The next version of ESX vSphere or ESX 4 new features – Memory “Hot Add” for virtual machine is not a secret anymore. The most important is Microsoft announced the drop of hot-add support from its roadmap, postponed to an unannounced date, reported by Virtualization.Info which is totally not make sense and it’s confirmed worked on next version of ESX/vCenter.

I would like to share how to configure memory “hot add” for Windows 2003 virtual machine.

Memory hot add
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How to check VMware tools version using CLI on Linux

Posted on February 10th, 2009 in Operating Systems, Tips | 2 Comments »

Personally, I would said VMware Tools upgrade on Linux is not as easy as Microsoft Windows virtual machine. Every time VMware Tools upgrade must give me some problem especially on SuSE Linux virtual machine. Anyway this article is not discuss about VMware Tools upgrade and I’m focus on “How to check VMware tools version on Linux using CLI

Option 1:
# grep buildNr /usr/bin/vmware-config-tools.pl
my $buildNr;
$buildNr = '3.5.0 build-143128';
return remove_whitespaces($buildNr);

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SLES9 and SLES10 VM mount as Read only

Posted on January 21st, 2009 in Operating Systems, Tips | 1 Comment »

1 of the SLES 10 and 4 of the SLES9 SP3 are having the same problem which is mount in READ only mode today. Damm! I found the root cause and thanks to Linux kernel bug!

According to VMware KB Article 51306

VMware has identified a problem with RHEL5, RHEL4 U4, RHEL4 U3, SLES10, and SLES9 SP3 guest operating systems. Their file systems may become read-only in the event of busy I/O retry or path failover of the ESX Server’s SAN or iSCSI storage.

This issue may affect other Linux distributions based on early 2.6 kernels as well, such as Ubuntu 7.04

The same behavior is expected even on a native Linux environment, where the time required for the file system to become read-only depends on the number of paths available to a particular target, the multi-path software installed on the operating system, and whether the failing I/O was to an EXT3 Journal. However, the problem is aggravated in an ESX Server environment because ESX Server manages multiple paths to the storage target and provides a single path to the guest operating system, which effectively reduces the number of retries done by the guest operating system.

And the solution is:

This is not an ESX Server bug. This Linux kernel bug has been fixed as of version 2.6.22.

Note: This article does not supersede the Guest Operating System Installation Guide, a guest operating system upgrade may require an ESX Server upgrade as well.

For RHEL5, the resolution is to upgrade to Update 1, also refereed to as RHEL5.1

For RHEL4 U3 and RHEL U4, the resolution is to upgrade to Update 5, also refereed to as RHEL 4.5.

For SLES10, the resolution is to upgrade to SP2. For more information, see Novell KB TID 3605538.

For SLES9 SP3, the resolution is to upgrade to SP4, or SP3 Maintenance Release build 2.6.5-7.286.
For more information, see TID 3584352 – Filesystem goes read-only in VMware

For Ubuntu 7.04, the resolution is to upgrade to 7.10

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How To Resize Windows 2003 Server Virtual Disk on VMware ESX

Posted on January 13th, 2009 in Operating Systems, Server, Tips | 22 Comments »

The following guide explain “How to resize Windows 2003 server (boot system) virtual disk on VMware ESX”.

Preliminary Note

  • Operating System: Windows 2003
  • Hostname: Win07
  • Initial drive c: hard disk space: 12 GB
  • Allocate additional hard disk space: 8GB
  • Total size(resize) = 20GB
  • VMware ESX version 3.5 update 3
  • GPart LiveCD 0.3.9-4

Note: We’re NOT warranty and response for any disk corruption. Please make sure you have BACKUP before proceed.

Here you go step by step:
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Windows 7 Beta on VMware Server 2

Posted on January 12th, 2009 in Operating Systems, Server | 8 Comments »

Today, I had fully tested the installation and functionalities for the latest Windows 7 on my VMware Server 2.0. The OS choice I choose from the VMware Server is Vista as for compatible to run the Windows 7. Impressively the performance is much more better than the Vista before. The installation had went through as usual as I do not run into drivers issues during and after the installation for Windows 7. Now I am enjoying the Windows 7 on VM with good performance compare to my Vista which always give me troublesome with unknown error.

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