5. Working with Storage | vCenter Troubleshooting

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Table Of Contents

vCenter Troubleshooting

By : Chuck Mills

4 (3)

vCenter Troubleshooting

4 (3)

By: Chuck Mills

Overview of this book

The book is designed for the competent vCenter administrator or anyone who is responsible for the vSphere environment. It can be used as a guide by vSphere architects and VMware consultants for a successful vSphere solution. You should have good knowledge and an understanding of core elements and applications of the vSphere environment.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. vCenter Upgrades and Migrations

1. vCenter Upgrades and Migrations

Best practices for upgrading to vCenter Server

New and updated information in vSphere 6

Migrating vCenter from SQL Express to SQL Server

Deploying vCenter Server Appliance with no DHCP server

Upgrading from Windows vCenter 5.1 to vCenter Server Appliance

Summary

2. Working with the vCenter Database

2. Working with the vCenter Database

Changing the vCenter database location

Growing the vCenter Server database

Reinitializing the vCenter Server database

Fixing the vCenter Server service and database connection issues

Recovering from an improper shutdown of VCSA

Resolving low and no space problems

Resources for other database issues

Summary

3. Setting Access and Permissions

3. Setting Access and Permissions

Introducing vCenter Single Sign-On

Unlocking and resetting the SSO administrator password

Adding additional Active Directory authentication in vCenter SSO 5.5

Permissions for vCenter and vCenter Operations Manager

Tips for troubleshooting vCenter permissions

Summary

4. Monitoring and Performance Considerations

4. Monitoring and Performance Considerations

Overview of disk I/O performance

Pinpointing the most I/O-intensive virtual machines

Changing Java memory usage for performance

Fixing issues with performance data that do not appear in vCenter

Summary

5. Working with Storage

5. Working with Storage

Deleting virtual machine snapshots that have locked files

Unmounting a LUN from ESXi hosts

Using vCenter operations for troubleshooting storage devices

Summary

6. Solving Some Not-so-common vCenter Issues

6. Solving Some Not-so-common vCenter Issues

Solving the problem of no objects in vCenter

Fixing the VPXD must be stopped to perform this operation message

Removing unwanted plugins in vSphere

Summary

7. Backup and Recovery

7. Backup and Recovery

Procedure for backing up vCenter SSO 5.5

Summary

8. Additional Support Methods and Tools

8. Additional Support Methods and Tools

VMware vCenter Support Assistant

Requirements for the vCenter Support Assistant

Installing and configuring the vCenter Support Assistant

VMware Labs Flings

Finding resources to support your VMware environment

Summary

9. Troubleshooting Methods

9. Troubleshooting Methods

Troubleshooting workflow

Summary

Index

Index

Deleting virtual machine snapshots that have locked files

Here are a few issues you might experience while working with the vSphere environment with regards to snapshots of your virtual machines.

There might be times when you have snapshots created but have the following issues:

You are unable to have the snapshot committed
The snapshot commits with no errors and everything looks fine in the snapshot manager, but there are still snapshot disks in the virtual machine's directory that can't be removed
You experience errors/failures from your backup solution because of the snapshot file that was not deleted during the snapshot commit

If you check the /var/log/hostd.log file on the ESXi host, you will find a message similar to the following:

If you attempt to remove the datastore, not knowing of the previous problem you will receive an error similar to this:
The resource '<VMFS-UUID>' is in use.

Another snapshot issue you might have running on vSphere 5.0 or above is when you click on the virtual...

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