Abstract: Techniques for effectuating a virtual NUMA architecture for virtual machines are disclosed herein. In an embodiment, a system determines the physical topology of a datacenter. When instantiating a virtual machine, the system determines a number of NUMA nodes for that VM based on the physical topology. The system then directs a second system to instantiate the virtual machine with the determined number of NUMA nodes.

Abstract: Techniques for effectuating a virtual Non-Uniform Memory Architecture (NUMA) for virtual machines and adjusting memory in virtual NUMA nodes are described. The virtual NUMA node topology may include a plurality of virtual NUMA nodes. The memory may be adjusted based on pressure in a specific virtual NUMA node of the plurality and an amount of guest memory assigned to the specific virtual NUMA node.

Abstract: A computing device has first and second virtual machines (VMs) and a resource assigned to the first VM. Each access request for the resource is forwarded thereto until the first VM is to be saved or migrated. Thereafter, each access request is forwarded to a holding queue. When the resource has acted upon all access requests forwarded thereto, the resource is reassigned to the second VM, and each access request at the holding queue is forwarded to the second VM and then the resource. Thus, all access requests for the resource are acted upon by the resource even after the resource is removed from the first VM and assigned to the second VM, and the save or migrate of the first VM can thereafter be completed.

Abstract: Techniques for recovering virtual machine state and boot information used to boot an installed guest operating system on systems where the information has either been lost or is not present are described.

Abstract: A virtual machine storage service can be use a unique network identifier and a SR-IOV compliant device can be used to transport I/O between a virtual machine and the virtual machine storage service. The virtual machine storage service can be offloaded to a child partition or migrated to another physical machine along with the unique network identifier.

Abstract: Embodiments relate to off-loading aspects of storage virtualization to storage hardware and modifying software to take advantage of hardware virtualization features. A co-design of hardware and software allows a filesystem to provide files such that indirection overhead normally needed to access the content of files can be bypassed while still managing the files as filesystem objects. A storage device manages and exposes a virtual volume which is used to store the content of a file. Virtual volumes can be initialized or populated so that virtual blocks therein align with device storage blocks. A virtual volume can be initialized and populated by parsing a virtual disk file to access virtual disk metadata, which is then used to determine and set features of the virtual volume.

Abstract: In one embodiment, a virtual storage system 200 may represent a file data set differently based on the activity being performed. The virtual storage system 200 may execute a runtime activity on a runtime format file 214 representing a file data set 212 on a virtual execution layer 220. The virtual storage system 200 may execute an interchange activity on an interchange format file 230 representing the file data set 232.

Abstract: Techniques for recovering virtual machine state and boot information used to boot an installed guest operating system on systems where the information has either been lost or is not present are described.

Abstract: Techniques involving replication of storage are described. A representative technique includes apparatuses and methods for receiving replicated virtual storage of a replicated virtual machine, including at least a replicated base virtual disk that substantially corresponds to a primary base virtual disk to be replicated. Copies of differencing disks or other forms of virtual storage updates are received at a recovery site, each of the differencing disks being associated with the primary base virtual disk as descendents thereof. The received copies of the differencing disks are arranged relative to the replicated base virtual disk corresponding to the manner in which the differencing disks were arranged relative to the primary base virtual disk, thereby maintaining the data view of the replicated virtual machine in synchronization with the virtual machine at the primary site.

Abstract: A computing device has first and second virtual machines (VMs) and a resource assigned to the first VM. Each access request for the resource is forwarded thereto until the first VM is to be saved or migrated. Thereafter, each access request is forwarded to a holding queue. When the resource has acted upon all access requests forwarded thereto, the resource is reassigned to the second VM, and each access request at the holding queue is forwarded to the second VM and then the resource. Thus, all access requests for the resource are acted upon by the resource even after the resource is removed from the first VM and assigned to the second VM, and the save or migrate of the first VM can thereafter be completed.

Abstract: Techniques for recovering virtual machine state and boot information used to boot an installed guest operating system on systems where the information has either been lost or is not present are described.

Abstract: Embodiments relate to off-loading aspects of storage virtualization to storage hardware and modifying software to take advantage of hardware virtualization features. A co-design of hardware and software allows a filesystem to provide files such that indirection overhead normally needed to access the content of files can be bypassed while still managing the files as filesystem objects. A storage device manages and exposes a virtual volume which is used to store the content of a file. Virtual volumes can be initialized or populated so that virtual blocks therein align with device storage blocks. A virtual volume can be initialized and populated by parsing a virtual disk file to access virtual disk metadata, which is then used to determine and set features of the virtual volume.

Abstract: Techniques for effectuating a virtual NUMA architecture for virtual machines are disclosed herein. In an embodiment, a system determines the physical topology of a datacenter. When instantiating a virtual machine, the system determines a number of NUMA nodes for that VM based on the physical topology. The system then directs a second system to instantiate the virtual machine with the determined number of NUMA nodes.

Abstract: Techniques for effectuating a virtual NUMA architecture for virtual machines and adjusting memory in virtual NUMA nodes are described herein.

Abstract: In one embodiment, a virtual storage system 200 may represent a file data set differently based on the activity being performed. The virtual storage system 200 may execute a runtime activity on a runtime format file 214 representing a file data set 212 on a virtual execution layer 220. The virtual storage system 200 may execute an interchange activity on an interchange format file 230 representing the file data set 232.

Abstract: A virtual machine storage service can be use a unique network identifier and a SR-IOV compliant device can be used to transport I/O between a virtual machine and the virtual machine storage service. The virtual machine storage service can be offloaded to a child partition or migrated to another physical machine along with the unique network identifier.

Abstract: Techniques for effectuating a virtual NUMA architecture for virtual machines are disclosed herein. In an embodiment, a system determines the physical topology of a datacenter. When instantiating a virtual machine, the system determines a number of NUMA nodes for that VM based on the physical topology. The system then directs a second system to instantiate the virtual machine with the determined number of NUMA nodes.

Abstract: A computing device has first and second virtual machines (VMs) and a resource assigned to the first VM. Each access request for the resource is forwarded thereto until the first VM is to be saved or migrated. Thereafter, each access request is forwarded to a holding queue. When the resource has acted upon all access requests forwarded thereto, the resource is reassigned to the second VM, and each access request at the holding queue is forwarded to the second VM and then the resource. Thus, all access requests for the resource are acted upon by the resource even after the resource is removed from the first VM and assigned to the second VM, and the save or migrate of the first VM can thereafter be completed.

Abstract: Techniques for effectuating a virtual Non-Uniform Memory Architecture (NUMA) for virtual machines and adjusting memory in virtual NUMA nodes are described. The virtual NUMA node topology may include a plurality of virtual NUMA nodes. The memory may be adjusted based on pressure in a specific virtual NUMA node of the plurality and an amount of guest memory assigned to the specific virtual NUMA node.

Abstract: In one embodiment, a virtual storage system 200 may represent a file data set differently based on the activity being performed. The virtual storage system 200 may execute a runtime activity on a runtime format file 214 representing a file data set 212 on a virtual execution layer 220. The virtual storage system 200 may execute an interchange activity on an interchange format file 230 representing the file data set 232.