公开(公告)号：US20220066806A1

公开(公告)日：2022-03-03

申请号：US17002233

申请日：2020-08-25

Applicant: VMware, Inc.

Inventor： Arunachalam RAMANATHAN ,  Yanlei ZHAO ,  Anurekh SAXENA ,  Yury BASKAKOV ,  Jeffrey W. SHELDON ,  Gabriel TARASUK-LEVIN ,  David A. DUNN ,  Sreekanth SETTY

IPC: G06F9/455 ,  G06F9/50 ,  G06F12/1027

Abstract: A virtual machine (VM) is migrated from a source host to a destination host in a virtualized computing system, the VM having a plurality of virtual central processing units (CPUs). The method includes copying, by VM migration software executing in the source host and the destination host, memory of the VM from the source host to the destination host by installing, at the source host, write traces spanning all of the memory and then copying the memory from the source host to the destination host over a plurality of iterations; and performing switch-over, by the VM migration software, to quiesce the VM in the source host and resume the VM in the destination host. The VM migration software installs write traces using less than all of the virtual CPUs, and using trace granularity larger than a smallest page granularity.

公开(公告)号：US20230023452A1

公开(公告)日：2023-01-26

申请号：US17384382

申请日：2021-07-23

Applicant: VMware, Inc.

Inventor： Yury BASKAKOV ,  Ying YU ,  Anurekh SAXENA ,  Arunachalam RAMANATHAN ,  Frederick Joseph JACOBS ,  Giritharan RASHIYAMANY

IPC: G06F3/06 ,  G06F9/455

Abstract: A method of populating page tables of an executing workload during migration of the executing workload from a source host to a destination host includes the steps of: before resuming the workload at the destination host, populating the page tables of the workload at the destination host, wherein the populating comprises inserting mappings from virtual addresses of the workload to physical addresses of system memory of the destination host; and upon completion of populating the page tables, resuming the workload at the destination host.

公开(公告)号：US20130305246A1

公开(公告)日：2013-11-14

申请号：US13941707

申请日：2013-07-15

Applicant: VMware, Inc.

Inventor： Edward Joseph GOGGIN ,  Hariharan SUBRAMANIAN ,  Sanjana ASWANI ,  Adam M. BELAY ,  Anurekh SAXENA

IPC: G06F9/455

CPC classification number: G06F9/45533 ,  G06F3/0647 ,  G06F9/45558 ,  G06F9/4856 ,  G06F2009/4557 ,  G06F2009/45579 ,  G06F2009/45583 ,  H04L47/783

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.

Abstract translation: 提供了一种将虚拟机从源计算机迁移到目的地计算机的方法，包括：将设置在与VM相关联的源计算机存储器中的请求队列的请求从请求队列暂停传输到VF; 同时暂停发送请求，确定何时不再有对先前请求的未决答复仍然被接收; 响应于确定没有对先前请求的更多未决的响应仍然被接收，将指示插入到请求队列的请求的位置的状态信息从VF传送到PF，并将PF传送到与 虚拟化中介的源计算机。 在将状态信息传送到与虚拟化中介相关联的源计算机存储器之后，恢复从状态信息所指示的请求队列的位置向PF发送请求; 并将来自PF的请求发送到物理存储。

公开(公告)号：US20230195533A1

公开(公告)日：2023-06-22

申请号：US17559625

申请日：2021-12-22

Applicant: VMware, Inc.

Inventor： Yury BASKAKOV ,  Ying YU ,  Anurekh SAXENA ,  Arunachalam RAMANATHAN ,  Frederick Joseph JACOBS ,  Giritharan RASHIYAMANY

IPC: G06F9/50 ,  G06F12/1009 ,  G06F12/0882 ,  G06F12/02

CPC classification number: G06F9/5077 ,  G06F9/5016 ,  G06F12/1009 ,  G06F12/0882 ,  G06F12/0238 ,  G06F2212/7201

Abstract: A method of populating page tables of an executing workload during migration of the executing workload from a source host to a destination host includes the steps of: during transmission of memory pages of the executing workload from the source host to the destination host, populating the page tables of the workload at the destination host, wherein the populating comprises inserting mappings from virtual addresses of the workload to physical addresses of system memory of the destination host for all of the memory pages of the executing workload; and upon completion of transmission of all of the memory pages of the workload, resuming the workload at the destination host.

公开(公告)号：US20230082951A1

公开(公告)日：2023-03-16

申请号：US17990564

申请日：2022-11-18

Applicant: VMware, Inc.

Inventor： Arunachalam RAMANATHAN ,  Yury BASKAKOV ,  Anurekh SAXENA ,  Ying YU ,  Rajesh VENKATASUBRAMANIAN ,  Michael Robert STUNES

IPC: 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：US20230028047A1

公开(公告)日：2023-01-26

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: 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.