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Appendix A. Creating ISO images

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Appendix A. Creating ISO images XenServer can use ISO images of CD-ROM or DVD-ROM disks as installation media and data sources for Windows or Linux VMs. This section describes how to make ISOs from CD/DVD media. Procedure A.1. On a Linux computer 1. Put the CD- or DVD-ROM disk into the drive. The disk should not be mounted. To check, type the command: mount If the disk is mounted, unmount the disk. Refer to your operating system documentation for assistance if required. 2. As root, type the command dd if=/dev/cdrom of=/path/cdimg_filename.iso This will take some time. When the operation is completed successfully, you should see something like 1187972+0 records in 1187972+0 records out Your ISO file is ready. Procedure A.2. On a Windows computer • Windows computers do not have an equivalent operating system command to create an ISO. Most CD-burning tools have a means of saving a CD as an ISO file. One simple and free utility is ISO Recorder. It works on Windows XP SP2, Windows 2000, and Windows Server 2003. Once installed, you simply right-click on a CD/DVD drive and select Create image from CD from the context menu. 33

Section	Page
XenServer Virtual Machine Installation Guide	1
Table of Contents	4
Chapter 1. About this document	6
1.1. Overview	6
1.2. How this Guide relates to other documentation	6
Chapter 2. Creating VMs	7
2.1. Overview	7
2.2. Virtual memory and disk size limits	7
2.3. XenServer product family virtual device support	8
2.4. Physical to Virtual Conversion (P2V)	9
2.4.1. General Guidelines for Virtualizing Physical Servers	10
2.5. Cloning an existing VM	11
2.6. Importing an exported VM	11
2.6.1. Exporting a VM	12
2.6.2. Importing a VM	12
Chapter 3. Installing Windows VMs	14
3.1. Making the ISO available to XenServer Hosts	14
3.1.1. Copying ISOs to local storage	15
3.2. Windows paravirtualized drivers	16
3.3. Remote Desktop	16
3.4. Preparing to clone a Windows VM	17
3.5. Release Notes	18
3.5.1. General Windows Issues	18
3.5.2. Windows 2003 Server	18
3.5.3. Windows XP SP2	18
3.5.4. Windows 2000 Server	18
3.5.5. Windows Vista	18
Chapter 4. Installing Linux VMs	19
4.1. Installation of a built-in distribution	20
4.2. Installing Linux from vendor media to a VM	20
4.3. Installing Linux from a network installation server to a VM	22
4.4. Physical-to-Virtual Installation of a Linux VM	23
4.4.1. Guest Installation Network	23
4.5. Installing the Linux guest agent	24
4.6. Preparing to clone a Linux VM	25
4.6.1. Machine Name	25
4.6.2. IP address	25
4.6.3. MAC address	26
4.7. Time handling in Linux VMs	26
4.8. Configuring VNC for VMs	26
4.8.1. Setting up Red Hat-based VMs for VNC	26
4.8.1.1. Determining the location of your VNC configuration file	27
4.8.1.2. Configuring GDM to use VNC	27
4.8.1.3. Firewall settings	28
4.8.1.4. VNC screen resolution	28
4.8.2. Setting up SLES-based VMs for VNC	29
4.8.2.1. Checking for a VNCserver	29
4.8.2.2. Enabling Remote Administration	29
4.8.2.3. Modifying the xinetd configuration	30
4.8.2.4. Firewall settings	30
4.8.2.5. VNC screen resolution	31
4.8.3. Setting up Debian-based VMs for VNC	32
4.8.4. Checking runlevels	32
4.9. Release Notes	32
4.9.1. Debian Sarge 3.1 and Etch 4.0	32
4.9.2. Red Hat Enterprise Linux 3	33
4.9.3. Red Hat Enterprise Linux 4	33
4.9.3.1. Preparing a RHEL 4.x guest for P2V	34
4.9.4. Red Hat Enterprise Linux 5	34
4.9.5. CentOS 4	35
4.9.6. CentOS 5	35
4.9.7. SUSE Enterprise Linux 9	35
4.9.8. SUSE Enterprise Linux 10 SP1	35
4.9.9. Oracle Enterprise Linux 5	35
Chapter 5. Updating VMs	36
5.1. Updating Windows operating systems	36
5.2. Updating paravirtualized drivers for Windows VMs	36
5.3. Updating Linux kernels and guest utilities	37
Appendix A. Creating ISO images	38
Appendix B. Setting Up a Red Hat Installation Server	39
B.1. Copy installation media	39
B.2. Enable remote access	39
B.2.1. NFS	39
B.2.2. FTP	40
B.2.3. HTTP	40
Appendix C. Troubleshooting VM problems	41
C.1. VM crashes	41
C.1.1. Linux VMs	41
C.1.2. Windows VMs	41
C.2. Troubleshooting boot problems on Linux VMs	42

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Appendix A. Creating ISO images

XenServer can use ISO images of CD-ROM or DVD-ROM disks as installation media and data

sources for Windows or Linux VMs. This section describes how to make ISOs from CD/DVD

media.

Procedure A.1. On a Linux computer

Put the CD- or DVD-ROM disk into the drive. The disk should not be mounted. To check,

type the command:

mount

If the disk is mounted, unmount the disk. Refer to your operating system documentation for

assistance if required.

As root, type the command

dd if=/dev/cdrom of=

/path/cdimg_filename.iso

This will take some time. When the operation is completed successfully, you should see

something like

1187972+0 records in

1187972+0 records out

Your ISO file is ready.

Procedure A.2. On a Windows computer

•

Windows computers do not have an equivalent operating system command to create an

ISO. Most CD-burning tools have a means of saving a CD as an ISO file.

One simple and free utility is

ISO Recorder

. It works on Windows XP SP2, Windows 2000,

and Windows Server 2003. Once installed, you simply right-click on a CD/DVD drive and

select Create image from CD from the context menu.