Pre-Grant Publication Number: 20090125904
Virtual machine migration
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#580Oracle VM Mangager Live Migration
Applies to Claims 1
Submitted by: Diane WillisLast updated: over 3 years ago
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Summary / Description
Summary / DescriptionVirtual Machine migration via Oracle VM Manager.
 
Basic Information
Type of Prior ArtOnline Publication
 
URLftp://ftp.software.ibm.com/comm...
 
Author/CreatorGregory Verstraeten
 
TitleOracle VM® with IBM System x®
 
Publication DateDecember 31, 2007
 
PublisherIBM Corporation
 
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Additional Information
 
Notes / To Do
Notes
 
Excerpt
Excerpt
VM Live Migration Live Migration can be done from the Oracle VM manager or directly on the server where the virtual machine is running. A virtual machine started from the Oracle VM manager uses a configuration file stored in /OVS/running_pool/<VMname>/vm.cfg. Another configuration file for the same virtual machine is stored in /etc/xen/<VMname>. The content of these two files may differ. We found convenient to merge the content of the two file in /OVS/running_pool/<VMname>/vm.cfg and to create a symbolic link from /etc/xen/<VMname> to /OVS/running_pool/<VMname>/vm.cfg. We noticed that a Live Migration does not work as expected if there is a slight difference in the configuration files in /etc/ and /OVS, therefore the symbolic link makes the live migration easier. From the Oracle VM manager On the Virtual machines tab, select the VM to be migrated, then select “Live Migration” in the “More Actions” list, and click Go. See the example below. The destination server in the server pool will be asked. From................... From the Oracle VM server The “xm migrate --live <Vm name> <destination server>” command migrates the virtual machine <> running on the local Oracle VM server to the Oracle VM server <destination server>. The following command issue a Live Migration of VM1 to the server named “server2” # xm migrate --live VM1 server2
 
Relevance
Claims
1
In a networked system of computers, including a source computer and a destination computer and a source virtual machine (VM) installed on the source computer, a virtualization method for migrating the source VM to a destination VM, the method comprising:pre-copying source VM memory to the destination VM;suspending execution of the source VM;transferring non-memory source VM state information to the destination VM, wherein the pre-copying of source VM memory is done before transferring the non-memory source VM state information;running the destination VM from the transferred non-memory source VM state; andafter transferring the non-memory source VM state information, retransferring to the destination VM one or more units of the source VM memory that the source VM has modified during the interval between when the memory units were pre-copied to the destination VM and when the non-memory source VM state information was transferred.
Relevance
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