公开(公告)号：US20220075637A1

公开(公告)日：2022-03-10

申请号：US17013277

申请日：2020-09-04

Applicant: VMware, Inc.

Inventor： Xunjia Lu ,  Bi Wu ,  Petr Vandrovec ,  Haoqiang Zheng

IPC: G06F9/455 ,  G06F9/445 ,  G06F9/50 ,  G06F12/02

Abstract: Techniques for concurrently supporting virtual non-uniform memory access (virtual NUMA) and CPU/memory hot-add in a virtual machine (VM) are provided. In one set of embodiments, a hypervisor of a host system can compute a node size for a virtual NUMA topology of the VM, where the node size indicates a maximum number of virtual central processing units (vCPUs) and a maximum amount of memory to be included in each virtual NUMA node. The hypervisor can further build and expose the virtual NUMA topology to the VM. Then, at a time of receiving a request to hot-add a new vCPU or memory region to the VM, the hypervisor can check whether all existing nodes in the virtual NUMA topology have reached the maximum number of vCPUs or maximum amount of memory, per the computed node size. If so, the hypervisor can create a new node with the new vCPU or memory region and add the new node to the virtual NUMA topology.

公开(公告)号：US20220066883A1

公开(公告)日：2022-03-03

申请号：US17002669

申请日：2020-08-25

Applicant: VMware, Inc.

Inventor： Wenguang Wang ,  Vamsi Gunturu ,  Junlong Gao ,  Petr Vandrovec ,  Ilya Languev ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

IPC: G06F11/14 ,  G06F16/25 ,  G06F16/27 ,  H04L29/08

Abstract: Techniques for recovering metadata associated with data backed up in cloud object storage are provided. In one set of embodiments, a computer system can create a snapshot of a data set, where the snapshot includes a plurality of data blocks of the data set that have been modified since the creation of a prior snapshot of the data set. The computer system can further upload the snapshot to a cloud object storage platform of a cloud infrastructure, where the snapshot is uploaded as a plurality of log segments conforming to an object format of the cloud object storage platform, and where each log segment includes one or more data blocks in the plurality of data blocks, and a set of metadata comprising, for each of the one or more data blocks, an identifier of the data set, an identifier of the snapshot, and a logical block address (LBA) of the data block. The computer system can then communicate the set of metadata to a server component running in a cloud compute and block storage platform of the cloud infrastructure.

公开(公告)号：US20220058094A1

公开(公告)日：2022-02-24

申请号：US16998060

申请日：2020-08-20

Applicant: VMware, Inc.

Inventor： Vamsi Gunturu ,  Wenguang Wang ,  Junlong Gao ,  Ilia Langouev ,  Petr Vandrovec ,  Maxime Austruy ,  Ilia Sokolinski ,  Satish Pudi

IPC: G06F11/14 ,  G06F11/20 ,  G06F16/17 ,  G06F16/22

Abstract: Solutions for managing archived storage include receiving, at a first node, a snapshot comprising object data (e.g., a virtual machine disk snapshot) from a second node (e.g., a software defined data center), and storing the snapshot in a tiered structure that includes a data tier and a metadata tier. Snapshots may be used for fail-over operations and/or backups, to support disaster recovery. The data tier comprises a log-structured file system (LFS), and the metadata tier comprises a content addressable storage (CAS) identifying addresses within the LFS. The metadata tier also comprises a logical layer indicating content in the CAS. Segment cleaning of the data tier is performed using a segment usage table (SUT). Some examples include performing a fail-over operation from the second node to a third node using at least the stored snapshot for workload recovery. In some examples, the CAS comprises a log-structured merge-tree (LSM-tree).