公开(公告)号：US11720447B2

公开(公告)日：2023-08-08

申请号：US17144082

申请日：2021-01-07

Applicant: VMware, Inc.

Inventor： Pratap Subrahmanyam ,  Rajesh Venkatasubramanian ,  Kiran Tati ,  Qasim Ali ,  Marcos Aguilera ,  Irina Calciu ,  Venkata Subhash Reddy Peddamallu ,  Xavier Deguillard ,  Yi Yao

IPC: G06F11/14 ,  G06F11/20 ,  G06F16/27 ,  G06F1/26

CPC classification number: G06F11/1438 ,  G06F1/263 ,  G06F11/1464 ,  G06F11/1471 ,  G06F11/1484 ,  G06F11/2025 ,  G06F16/27 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2201/84 ,  G06F2201/85

Abstract: Techniques for achieving application high availability via application-transparent battery-backed replication of persistent data are provided. In one set of embodiments, a computer system can detect a failure that causes an application of the computer system to stop running. In response to detecting the failure, the computer system can copy persistent data written by the application and maintained locally at the computer system to one or more remote destinations, where the copying is performed in a manner that is transparent to the application and while the computer system runs on battery power. The application can then be restarted on another computer system using the copied data.

公开(公告)号：US11698760B2

公开(公告)日：2023-07-11

申请号：US17481418

申请日：2021-09-22

Applicant: VMWARE, INC.

Inventor： Marcos K. Aguilera ,  Keerthi Kumar ,  Pramod Kumar ,  Pratap Subrahmanyam ,  Sairam Veeraswamy ,  Rajesh Venkatasubramanian

IPC: G06F3/06

CPC classification number: G06F3/067 ,  G06F3/065 ,  G06F3/0611 ,  G06F3/0613 ,  G06F3/0619

Abstract: Disclosed are various embodiments for improving the resiliency and performance of cluster memory. First, a computing device can submit a write request to a byte-addressable chunk of memory stored by a memory host, wherein the byte-addressable chunk of memory is read-only. Then, the computing device can determine that a page-fault occurred in response to the write request. Next, the computing device can copy a page associated with the write request from the byte-addressable chunk of memory to the memory of the computing device. Subsequently, the computing device can free the page from the memory host. Then, the computing device can update a page table entry for the page to refer to a location of the page in the memory of the computing device.

公开(公告)号：US20230168965A1

公开(公告)日：2023-06-01

申请号：US18101536

申请日：2023-01-25

Applicant: VMware, Inc.

Inventor： Marcos K. Aguilera ,  Keerthi Kumar ,  Pramod Kumar ,  Pratap Subrahmanyam ,  Sairam Veeraswamy ,  Rajesh Venkatasubramanian

IPC: G06F11/10 ,  G06F11/07 ,  G06F3/06

CPC classification number: G06F11/1068 ,  G06F11/0772 ,  G06F3/0673 ,  G06F3/0659 ,  G06F3/0619

Abstract: Disclosed are various embodiments for improving the resiliency and performance of clustered memory. A computing device can generate at least one parity page from at least a first local page and a second local page. The computing device can then submit a first write request for the first local page to a first one of a plurality of memory hosts. The computing device can also submit a second write request for the second local page to a second one of the plurality of memory hosts. Additionally, the computing device can submit a third write request for the parity page to a third one of the plurality of memory hosts.

公开(公告)号：US20230130553A1

公开(公告)日：2023-04-27

申请号：US17510126

申请日：2021-10-25

Applicant: VMware, Inc.

Inventor： Ivaylo Radoslavov Radev ,  Deepak Babarjung ,  Maarten Wiggers ,  Rajesh Venkatasubramanian ,  Sahan Bamunavita Gamage ,  Tomo Vladimirov Simeonov

IPC: G06F9/455 ,  G06F9/48 ,  G06F16/27 ,  G06F11/20 ,  G06F8/61

Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed for high availability (HA) application migration in a virtualized environment. An example apparatus includes at least one memory, instructions in the apparatus, and processor circuitry to at least one of execute or instantiate the instructions to identify an HA slot in a virtual server rack, the HA slot to facilitate a failover of an application executing on a first virtual machine (VM) in the virtual server rack, the first VM identified as a protected VM, deploy a second VM in the HA slot, transfer data from the first VM to the second VM, and, in response to not identifying a failure of at least one of the first or second VMs during the transfer, trigger a shutdown of the first VM, and synchronize migration data associated with the virtual server rack to identify the second VM as the protected VM.

公开(公告)号：US11573905B2

公开(公告)日：2023-02-07

申请号：US17154411

申请日：2021-01-21

Applicant: VMware, Inc.

Inventor： Tobias Stumpf ,  Ashish Kaila ,  Mukund Gunti ,  Rajesh Venkatasubramanian

IPC: G06F12/1009 ,  G06F12/1027 ,  G06F11/14 ,  G06F12/0875 ,  G06F9/4401 ,  G06F9/445

Abstract: Examples described herein include systems and methods for retaining information about bad memory pages across an operating system reboot. An example method includes detecting, by a first instance of an operating system, an error in a memory page of a non-transitory storage medium of a computing device executing the operating system. The operating system can tag the memory page as a bad memory page, indicating that the memory page should not be used by the operating system. The operating system can also store tag information indicating memory pages of the storage medium that are tagged as bad memory pages. The example method can also include receiving an instruction to reboot the operating system, booting a second instance of the operating system, and providing the tag information to the second instance of the operating system. The operating system can use the tag information to avoid using the bad memory pages.

公开(公告)号：US20230031304A1

公开(公告)日：2023-02-02

申请号：US17382848

申请日：2021-07-22

Applicant: VMware, Inc.

Inventor： Marcos Kawazoe Aguilera ,  Renu Raman ,  Pratap Subrahmanyam ,  Praveen Vegulla ,  Rajesh Venkatasubramanian

IPC: G06F9/50 ,  G06F12/08 ,  G06F9/48

Abstract: Disclosed are various embodiments for optimized memory tiering. An ideal tier size for a first memory and an ideal tier size for a second memory can be determined for a process. Then, a host computing device can be identified that can accommodate the ideal tier size for the first memory and the second memory. Subsequently, the process can be assigned to the host computing device.

公开(公告)号：US20230017804A1

公开(公告)日：2023-01-19

申请号：US17481418

申请日：2021-09-22

Applicant: VMWARE, INC.

Inventor： MARCOS K. AGUILERA ,  Keerthi Kumar ,  Pramod Kumar ,  Pratap Subrahmanyam ,  Sairam Veeraswamy ,  Rajesh Venkatasubramanian

IPC: G06F12/1009 ,  G06F11/10

Abstract: Disclosed are various embodiments for improving the resiliency and performance of cluster memory. First, a computing device can submit a write request to a byte-addressable chunk of memory stored by a memory host, wherein the byte-addressable chunk of memory is read-only. Then, the computing device can determine that a page-fault occurred in response to the write request. Next, the computing device can copy a page associated with the write request from the byte-addressable chunk of memory to the memory of the computing device. Subsequently, the computing device can free the page from the memory host. Then, the computing device can update a page table entry for the page to refer to a location of the page in the memory of the computing device.

公开(公告)号：US11543988B1

公开(公告)日：2023-01-03

申请号：US17384469

申请日：2021-07-23

Applicant: VMware, Inc.

Inventor： Arunachalam Ramanathan ,  Yury Baskakov ,  Anurekh Saxena ,  Ying Yu ,  Rajesh Venkatasubramanian ,  Michael Robert Stunes

IPC: G06F12/00 ,  G06F3/06 ,  G06F9/455

Abstract: A method of preserving the contiguity of large pages of a workload during migration of the workload from a source host to a destination host includes the steps of: detecting at the destination host, receipt of a small page of zeros from the source host, wherein, at the source host, the small page is part of one of the large pages of the workload; and upon detecting the receipt of the small page of zeros, storing, at the destination host, all zeros in a small page that is part of one of the large pages of the workload.

公开(公告)号：US20220075643A1

公开(公告)日：2022-03-10

申请号：US17527399

申请日：2021-11-16

Applicant: VMware, Inc.

Inventor： Sahan Gamage ,  Benjamin J. Corrie ,  Adrian Drzewiecki ,  Pranshu Jain ,  Mark Johnson ,  Zhelong Pan ,  Rajesh Venkatasubramanian

IPC: G06F9/455 ,  G06F9/50 ,  G06F9/48

Abstract: Various aspects are disclosed for unified resource management of containers and virtual machines. A podVM resource configuration for a pod virtual machine (podVM) is determined using container configurations. The podVM comprising a virtual machine (VM) that provides resource isolation for a pod based on the podVM resource configuration. A host selection for the podVM is received from a VM scheduler. The host selection identifies hardware resources for the podVM. A container scheduler is limited to bind the podVM to a node corresponding to the hardware resources of the host selection from the VM scheduler. The podVM is created in a host corresponding to the host selection. Containers are started within the podVM. The containers correspond to the container configurations.

公开(公告)号：US20220019506A1

公开(公告)日：2022-01-20

申请号：US17488286

申请日：2021-09-28

Applicant: VMware, Inc.

Inventor： Pratap Subrahmanyam ,  Rajesh Venkatasubramanian ,  Kiran Tati ,  Qasim Ali

IPC: G06F11/20 ,  G06F12/0804 ,  G06F1/30 ,  G06F11/14

Abstract: Techniques for implementing high availability for persistent memory are provided. In one embodiment, a first computer system can detect an alternating current (AC) power loss/cycle event and, in response to the event, can save data in a persistent memory of the first computer system to a memory or storage device that is remote from the first computer system and is accessible by a second computer system. The first computer system can then generate a signal for the second computer system subsequently to initiating or completing the save process, thereby allowing the second computer system to restore the saved data from the memory or storage device into its own persistent memory.