Adam M Belay

US Patent:

8464259, Jun 11, 2013

Filed:

Feb 16, 2012

Appl. No.:

13/397822

Inventors:

Adam M. Belay - Cambridge MA, US

Assignee:

VMware, Inc. - Palo Alto CA

International Classification:

G06F 9/455

US Classification:

718 1, 711 6, 711E12001

Abstract:

In one or more embodiments of the invention, migration of a virtual machine includes identifying a hardware resource which is accessed directly by a device driver of the virtual machine and generating an emulation of the hardware resource to simulate the hardware resource as experiencing an error. The current state of the virtual machine can then be transmitted to the destination host computer, wherein the current state includes the emulation which simulates the hardware resource as experiencing an error. In at least one embodiment, generating the emulation includes defining the error as one that triggers a reset of the hardware resource after migration of the virtual machine from the source host computer to the destination host computer.

US Patent:

8489699, Jul 16, 2013

Filed:

Aug 13, 2010

Appl. No.:

12/856399

Inventors:

Edward Joseph Goggin - Cambridge MA, US
Hariharan Subramanian - Wakefield MA, US
Sanjana Aswani - Boston MA, US
Adam M. Belay - Cambridge MA, US
Anurekh Saxena - Cambridge MA, US

Assignee:

VMware, Inc. - Palo Alto CA

International Classification:

G06F 15/167
G06F 21/00
G06F 9/455

US Classification:

709213, 709216, 711 6, 718 1

Abstract:

A method is provided to migrate a virtual machine from a source computing machine to a destination computing machine comprising: suspending transmission of requests from a request queue disposed in source computing machine memory associated with the VM from the request queue to a VF; while suspending the transmission of requests, determining when no more outstanding responses to prior requests remain to be received; in response to a determination that no more outstanding responses to prior requests remain to be received, transferring state information that is indicative of locations of requests inserted to the request queue from the VF to a PF and from the PF to a memory region associated with a virtualization intermediary of the source computing machine. After transferring the state information to source computing machine memory associated with a virtualization intermediary, resuming transmission of requests from locations of the request queue indicated by the state information to the PF; and transmitting the requests from the PF to the physical storage.

US Patent:

20100250824, Sep 30, 2010

Filed:

Mar 25, 2009

Appl. No.:

12/410695

Inventors:

Adam M. BELAY - Cambridge MA, US

Assignee:

VMWARE, INC. - Palo Alto CA

International Classification:

G06F 12/00
G06F 9/455

US Classification:

711 6, 718 1, 703 23, 711E12001

Abstract:

Virtual machines that utilize pass-through devices are migrated from a source host computer to a destination host computer. During preparation for migration, the pass-through device is substituted with an emulation handler that simulates the pass-through device experiencing errors. Upon successful migration, an error reporting signal is triggered to cause the device driver in the virtual machine to initiate a reset of the pass-through device at the destination host computer, upon which the pass-through device is mapped to the migrated virtual machine.

US Patent:

20130305246, Nov 14, 2013

Filed:

Jul 15, 2013

Appl. No.:

13/941707

Inventors:

Hariharan SUBRAMANIAN - Wakefield MA, US
Sanjana ASWANI - Boston MA, US
Adam M. BELAY - Cambridge MA, US
Anurekh SAXENA - Cambridge MA, US

International Classification:

G06F 9/455

US Classification:

718 1

Abstract:

A method is provided to migrate a virtual machine from a source computing machine to a destination computing machine comprising: suspending transmission of requests from a request queue disposed in source computing machine memory associated with the VM from the request queue to a VF; while suspending the transmission of requests, determining when no more outstanding responses to prior requests remain to be received; in response to a determination that no more outstanding responses to prior requests remain to be received, transferring state information that is indicative of locations of requests inserted to the request queue from the VF to a PF and from the PF to a memory region associated with a virtualization intermediary of the source computing machine. After transferring the state information to source computing machine memory associated with a virtualization intermediary, resuming transmission of requests from locations of the request queue indicated by the state information to the PF; and transmitting the requests from the PF to the physical storage.