Red Hat, Inc.

Other

Henri Van Riel

Marcelo Wormsbecker Tosatti

Luiz Capitulino

A method includes, with a computing system, exiting a context of a virtual machine, the exiting in response to a request from a guest operating system of the virtual machine to switch from a first encryption key identifier for the virtual machine to a second encryption key identifier for the virtual machine. The method further includes, with the computing system, loading the second encryption key identifier into a virtual machine control module of a virtual processor of the virtual machine and after loading the second encryption key identifier, entering the context of the virtual machine.

Multiple encryption keys for a virtual machine

Systems and methods for data storage management technology that enables a guest module of a virtual machine to indicate an order in which a host module should write data from physical memory to a secondary storage. An example method may comprise: identifying, by a processing device executing a host module, a plurality of modifications to direct access excited (DAX) memory made by a plurality of direct access operations executed by a guest module of a virtual machine; determining, by the host module, an order of the plurality of modifications to DAX memory; receiving, by the host module, a synchronization request from the guest module; and responsive to the synchronization request, copying, by the host module, data from the DAX memory to a secondary storage in view of the order of the plurality of modifications.

Guest ordering of host file system writes

A system and methods are disclosed for configuring a virtualized system for real-time response from virtual machines (VMs). In accordance with one embodiment, a VM request is received, where the request specifies a number N of virtual processors for executing real-time tasks, and where N is a positive integer. In response to the VM request, a plurality of physical processors are partitioned into a first subset dedicated to real-time tasks and a second subset dedicated to non-real-time tasks, the first subset having at least N physical processors, and one or more commands are submitted to one or both of a hypervisor and a guest OS of a first VM to configure the first VM to have N virtual processors dedicated to real-time tasks and a set of additional virtual processors dedicated to non-real-time tasks.

Configuration of virtual machines in view of response time constraints

Systems and methods for data storage management technology that optimizes the creation and storage of data objects. An example method may involve: receiving a request to create a data object; storing a first portion of the data object in a first data storage; determining a location in a second data storage in view of a predicted size of the data object and an access unit size of the second data storage; copying, by a processing device, the first portion of the data object from the first data storage to the location in the second data storage; and in response to receiving a second portion of the data object, directly storing the second portion in the second data storage.

Delayed allocation for data object creation

Systems and methods for data storage management technology that enables a guest module of a virtual machine to indicate an order in which a host module should write data from physical memory to a secondary storage. An example method may comprise: identifying, by a processing device executing a host module, a plurality of modifications to physical memory made by a plurality of direct access operations executed by a guest module of a virtual machine; determining, by the host module, an order of the plurality of modifications to physical memory; receiving, by the host module, a synchronization request from the guest module; and responsive to the synchronization request, copying, by the host module, data from the physical memory to a secondary storage in view of the order of the plurality of modifications.

Systems and methods for data storage management technology that optimizes the creation and storage of file objects. The method includes: receiving a request to create a file object; storing a first portion of the file object in a buffer in a first data storage; determining a location in a second data storage in view of a predicted size of the file object; migrating the first portion of the file object from the buffer to the location in the second data storage; and in response to receiving a second portion of the file object, storing the second portion in the second data storage without storing the second portion in the buffer in the first data storage.

Growing community of inventors

Merrimack, NH, United States of America

Henri Van Riel