Domain Live Migration | Oracle Audio Technologies E10898-02 manual

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Domain Live Migration

This Chapter discusses live migration of domains to other, identical computers. You must use identical computers to perform live migrations, that is, the computer make and model number must be identical.

To perform live migration of domains, you must create a shared virtual disk before you perform the migration. This Chapter contains:

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Creating a Shared Virtual Disk for Live Migration

Migrating a Domain

6.1 Creating a Shared Virtual Disk for Live Migration

If you want to perform live migration of domains to other, identical, computers, you must create a shared virtual disk to be used during the live migration. You can set up a shared virtual disk in the following configurations:

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OCFS2 (Oracle Cluster File System) using the iSCSI (Internet SCSI) network protocol

OCFS2 using SAN (Storage Area Network)

NFS (Network File System)

This section discusses creating a shared virtual disk in these configurations.

6.1.1 Creating a Shared Virtual Disk Using OCFS2 on iSCSI

To create a shared virtual disk using OCFS2 on iSCSI:

1.Install the iscsi-initiator-utils RPM. The iscsi-initiator-utils RPM is available on the Oracle VM Server CDROM or ISO file.

rpm -Uvh iscsi-initiator-utils-6.2.0.742-0.5.el5.i386.rpm

2.Start the iSCSI service: service iscsi start

3.Run discovery on the iSCSI target. In this example, the target is 10.1.1.1: iscsiadm -m discovery -t sendtargets -p 10.1.1.1

This command returns output similar to:

10.1.1.1:3260,5 iqn.1992-04.com.emc:cx.apm00070202838.a2 10.1.1.1:3260,6 iqn.1992-04.com.emc:cx.apm00070202838.a3 10.2.1.250:3260,4 iqn.1992-04.com.emc:cx.apm00070202838.b1

Domain Live Migration 6-1

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Oracle Audio Technologies E10898-02 manual Domain Live Migration, Creating a Shared Virtual Disk for Live Migration

Contents

February E10898-02Page Contents Command-Line Tools Oracle VM Server Configuration File Page Preface Accessibility of Code Examples in Documentation TTY Access to Oracle Support Services Command Syntax Conventions Page What is Virtualization? Why Virtualize?Introduction to Virtualization Xen Technology Oracle VMXen Technology Oracle VM Architecture shows the components of Oracle VM Oracle VM 4Oracle VM Server User’s Guide Oracle VM Server Oracle VM Server Hypervisor Domains, Guests and Virtual MachinesHypervisor Domains Management DomainHardware Virtualization Vs. Paravirtualization Creating Virtual Machines Configuring Oracle VM Server Configuring Oracle VM ServerManaging Oracle VM Server Repositories Oracle VM Agent Command-Line Tool Configuring Oracle VM AgentOracle VM Agent Xmlrpc Configuring Oracle VM Agent Stopping Oracle VM Agent Starting Oracle VM AgentMonitoring Oracle VM Agent Deploying Oracle VM Agent Remotely Starting a Guest with the Oracle VM Agent API Testing the Oracle VM Agent Connection Remotely Stopping a Guest with the Oracle VM Agent API Oracle VM Agent UtilitiesMonitoring a Guest with the Oracle VM Agent Deleting a Guest with the Oracle VM Agent 6Oracle VM Server User’s Guide Supported Guest Operating Systems Creating a Guest -bit Hypervisor Supported Guest Operating Systems Supported Guest Operating Systems Creating a Guest Using a Template Creating a Guest Using a TemplateMounting an ISO Enabling Registration of Guests with Oracle VM Manager Creating a Guest Using virt-install Creating a Guest Using virt-install Press Enter Following question is displayed Would you like to enable graphics support yes or no? Creating a Paravirtualized Guest Manually Creating the Root File SystemCreating a Paravirtualized Guest Manually Populating the Root File System Configuring the Guest Creating a Hardware Virtualized Guest Manually Creating a Hardware Virtualized Guest Manually Edit /mnt/etc/sysconfig/network-scripts/ifcfg-eth0 Use VNCViewer to display the guest If you see this error message Restart the guest, using the xm command-line tool Installing Paravirtual Drivers Installing Paravirtual Drivers 16Oracle VM Server User’s Guide Domain Monitoring and Administration Using the xm Command-Line InterfaceDomain Lifecycle Using the xm Command-Line Interface Monitoring DomainsViewing Host Information Using the xm Command-Line Interface 4Oracle VM Server User’s Guide Creating a Shared Virtual Disk Using OCFS2 on iSCSI Domain Live MigrationCreating a Shared Virtual Disk for Live Migration Delete entries that you do not want to use, for example Creating a Shared Virtual Disk for Live Migration Creating a Shared Virtual Disk Using OCFS2 on SAN Adding a Shared Virtual Disk Using NFS Migrating a Domain Migrating a Domain 6Oracle VM Server User’s Guide Managing Oracle VM Server Repositories Repository Configuration FileOracle VM Server Repositories Repository Mount Options Adding a Repository Removing a RepositoryOracle VM Server Repositories Command-Line Tools Start ConfigureStop Restart Nname --name=name HelpRRAM --ram=RAM UUUID --uuid=UUID Vnc Bvalue --bridge=valueVncport=port Sdl Os-variant=variant NoapicArch=arch Llocation --location=location ParavirtVif-type=type Xargs --extra-args=args Destroy domain-id Console domain-idDmesg --clear Help --long option List --long --label domain-id =file --defconfig=fileLog Migrate domain-id host -l --live -r=MB --resource=MB Shutdown -a -w domain-id Restore statefile Unpause domain-id Top Oracle VM Server Configuration File Oracle VM Server Configuration File Loglevel Critical or Fatal Error Warn or Warning Info DebugLogfile location Xend-unix-server yes no Xend-http-server yes noXend-tcp-xmlrpc-server yes no Xend-unix-xmlrpc-server yes no Xend-relocation-port port Xend-port portXend-address IPAddress Xend-relocation-address IPAddress Dom0-min-mem memory Enable-dump yes noDom0-cpus CPUs External-migration-tool tool 6Oracle VM Server User’s Guide Configuration File Example Guest Configuration Files Configuration File Example Oracle VM Agent Architecture Oracle VM Agent Architecture Oracle VM Agent Deployment Oracle VM Agent Deployment Oracle VM Agent Architecture D-3 4Oracle VM Server User’s Guide Troubleshooting Debugging ToolsOracle VM Server Directories Guest Console Access Using DhcpOracle VM Server Command-Line Tools Using Dhcp Guest Console Access Cannot Display Graphical Installer When Creating Guests Cannot Display Graphical Installer When Creating GuestsHardware Virtualized Guest Console Not Displayed Wallclock Time Skew Problems Setting the Guest’s ClockMouse Pointer Tracking Problems Mouse Pointer Tracking Problems Hardware Virtualized Guest Killed Hardware Virtualized Guest Windows InstallationHardware Virtualized Guest Devices Not Working as Expected Hardware Virtualized Guest Killed Attaching to a Console with the Grub Boot Loader Firewall Blocks NFS AccessTAP Disks with Paravirtualized Guests CD-ROM Image Not Found 8Oracle VM Server User’s Guide Glossary Oracle VM Server Oracle VM AgentOracle VM Manager Paravirtualized machine Vif Utility ServerVirtual disk Virtual Machine VM Glossary-4 Index-1 Index Index-2