Administering virtual machines in a distributed computing environment

• US 9,612,857 B2
• Filed: 04/24/2014
• Issued: 04/04/2017
• Est. Priority Date: 04/24/2014
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Archer, Charles J., Blocksome, Michael A., Carey, James E., Sanders, Philip J.
• Primary Examiner(s): Bates, Kevin
• Assistant Examiner(s): KIM, DAE Y
• Application Number:
  US14/260,786
• Publication Number:
  US 20150309822A1
• Time in Patent Office: 1,076 Days
• CPC Class Codes: G06F 2009/4557 Distribution of virtual machine instances; Migration and load balancing
• CPC Class Codes: G06F 2009/45595 Network integration; Enabling network access in virtual machine instances
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455
• CPC Class Codes: H04L 41/122 of virtualised topologies, e.g. software-defined networks [SDN] or network function virtualisation [NFV]
• CPC Class Codes: H04L 41/5054 Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
• CPC Class Codes: H04L 41/5096 wherein the managed service relates to distributed or central networked applications
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1014 based on the content of a request
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services

Abstract

Administering VMs in a distributed computing environment that includes hosts that execute a VMM, with each VMM supporting execution of one or more VMs, includes: assigning the VMMs to a logical tree topology with one as a root; and executing, by the VMMs of the tree topology, a reduce operation, including: sending, by the root VMM to each of other VMMs of the tree topology, a request for an instance of a particular VM; pausing, by each of the other VMMs, the requested instance of the particular VM; providing, by each of the other VMMs to the root VMM in response to the root VMM'"'"'s request, the requested instance of the particular VM; and identifying, by the root VMM, differences among the requested instances of the particular VM including, performing a bitwise XOR operation amongst the instances of the particular VM.

Claims

1. An apparatus for administering a plurality of virtual machines (‘

VMs’

) in a distributed computing environment, the distributed computing environment comprising a plurality of hosts, one or more of the hosts executing a virtual machine monitor (‘

VMM’

), each VMM supporting execution of one or more VMs, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the steps of;

assigning, by a VMM manager, the VMMs of the distributed computing environment to a logical tree topology, including assigning one of the VMMs as a root VMM of the tree topology; and

executing, by the VMMs of the tree topology, a reduce operation, including;

sending, by the root VMM to each of other VMMs of the tree topology, a request for an instance of a particular VM;

pausing, by each of the other VMMs, the requested instance of the particular VM;

providing, by each of the other VMMs to the root VMM in response to the root VMM'"'"'s request, the requested instance of the particular VM; and

identifying, by the root VMM, differences among two or more of the requested instances of the particular VM including, performing a bitwise XOR operation between a root VM of the particular VM and each of the two or more requested instances of the particular VM.

2. The apparatus of claim 1, further comprising computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the steps of establishing, by the root VMM for each of the other VMMs, a checkpoint of the instance of the particular VM, including:

retrieving, by the root VMM from the other VMMs, memory pages that include the identified differences; and

storing the root VMM'"'"'s instance of the particular VM along with the memory pages retrieved from each of the other VMMs.

3. The apparatus of claim 2, further comprising computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the step of restarting, from the checkpoint by a VMM other than the root VMM, an instance of the particular VM including:

retrieving, from the root VMM, memory pages retrieved from the other VMM;

retrieving, from the root VMM, the root VMM'"'"'s stored instance of the particular VM;

modifying the root VMM'"'"'s stored instance of the particular VM with the retrieved memory pages; and

executing the modified instance of the particular VM.

4. The apparatus of claim 1, wherein executing the reduce operation further comprises executing the reduce operation periodically at predefined intervals without user intervention.

5. The apparatus of claim 1, wherein executing the reduce operation further comprises executing the reduce operation on-demand responsive to a user request.

6. The apparatus of claim 1, wherein executing the reduce operation further comprises executing the reduce operation, automatically without user intervention, in dependence upon an execution policy and responsive to an event specified in the execution policy.

7. The apparatus of claim 1, wherein the distributed computing environment comprises a parallel computer, the parallel computer comprising a plurality of compute nodes, each of the compute nodes comprising one of the plurality of hosts and executing at least one of the VMMs, each compute node further comprising a plurality of communications adapters, each communications adapter configured to couple the compute node to other compute nodes for data communications and to one of a plurality of data communications networks.

8. The apparatus of claim 1, wherein one of the plurality of data communications networks comprises a multi-dimensional, point-to-point network.

9. The apparatus of claim 1, wherein one of the plurality of data communications networks comprises a global combining network.

10. A computer program product for administering a plurality of virtual machines (‘

VMs’

) in a distributed computing environment, the distributed computing environment comprising a plurality of hosts, one or more of the hosts executing a virtual machine monitor (‘

VMM’

), each VMM supporting execution of one or more VMs, the computer program product disposed upon a computer readable medium, wherein the computer readable medium is not a signal, the computer program product comprising computer program instructions that, when executed, cause a computer to carry out the steps of;

assigning, by a VMM manager, the VMMs of the distributed computing environment to a logical tree topology, including assigning one of the VMMs as a root VMM of the tree topology; and

executing, by the VMMs of the tree topology, a reduce operation, including;

sending, by the root VMM to each of other VMMs of the tree topology, a request for an instance of a particular VM;

pausing, by each of the other VMMs, the requested instance of the particular VM;

providing, by each of the other VMMs to the root VMM in response to the root VMM'"'"'s request, the requested instance of the particular VM; and

identifying, by the root VMM, differences among two or more of the requested instances of the particular VM including, performing a bitwise XOR operation between a root VM of the particular VM and each of the two or more requested instances of the particular VM.

11. The computer program product of claim 10, further comprising computer program instructions that, when executed, cause a computer to carry out the step of establishing, by the root VMM for each of the other VMMs, a checkpoint of the instance of the particular VM, including:

retrieving, by the root VMM from the other VMMs, memory pages that include the identified differences; and

storing the root VMM'"'"'s instance of the particular VM along with the memory pages retrieved from each of the other VMMs.