WMware, Inc. Patent applications |
Patent application number | Title | Published |
20150134822 | SYSTEM AND METHOD FOR DYNAMICALLY CONFIGURING A LOAD BALANCER IN A VIRTUAL NETWORK ENVIRONMENT - Techniques for dynamic configuration of a load balancer in a virtual network environment are described. In one example embodiment, load balancing rules are configured using virtual machine (VM) inventory objects. The configured load balancing rules are then transformed by replacing the VM inventory objects in the configured load balancing rules with associated Internet protocol (IP) addresses using an IP address management (IPAM) table or a network address translation (NAT) table. The transformed load balancing rules are then sent to the load balancer for load balancing network traffic between a plurality of VMs running on one or more host computing systems in one or more computing networks. | 05-14-2015 |
20140334301 | HIERARCHICAL ALLOCATION OF NETWORK BANDWIDTH FOR QUALITY OF SERVICE - Network bandwidth is allocated to virtual machines (VMs) according to a node hierarchy that includes a root node, intermediate nodes, and leaf nodes, wherein each leaf node represents a queue of packet transmission requests from a VM and each intermediate node represents a grouping of leaf queues. As VMs generate requests to transmit packets over the network, the network bandwidth is allocated by queuing packets for transmission in the leaf nodes, and selecting a leaf node from which a packet is to be transmitted based on tracking data that represent how much network bandwidth has been allocated to the nodes. Upon selecting the leaf node, the tracking data of the selected leaf node and the tracking data of an intermediate node that is a parent node of the selected leaf node are updated, and a command to transmit the packet of the selected leaf node is issued. | 11-13-2014 |
20140325170 | Conversion of Virtual Disk Snapshots Between Redo and Copy-on-Write Technologies - A framework for converting between copy-on-write (COW) and redo-based technologies is disclosed. To take a virtual disk snapshot, disk descriptor files, which include metadata information about data stored in virtual volumes (vvols), are “swizzled” such that the descriptor file for a latest redo log, to which IOs are currently performed, points to the base vvol of a COW-based vvol hierarchy. A disk descriptor file previously associated with the base vvol may also be updated to point to the vvol newly created by the snapshot operation. To revert to an earlier disk state, a snapshot may be taken before copying contents of a snapshot vvol of the COW-based vvol hierarchy to a base vvol of the hierarchy, thereby ensuring that the reversion can be rolled back if it is unsuccessful. Reference counting is performed to ensure that vvols in the vvol hierarchy are not orphaned in delete and revert use cases. Differences between vvols in the COW-based vvol hierarchy are used to clone the hierarchy and to migrate the hierarchy to a redo-based disk hierarchy. | 10-30-2014 |
20140325141 | TRIM SUPPORT FOR A SOLID-STATE DRIVE IN A VIRTUALIZED ENVIRONMENT - A computer system that employs a solid-state memory device as a physical storage resource includes a hypervisor that is capable of supporting TRIM commands issued by virtual machines running in the computer system. When a virtual machine issues a TRIM command to its corresponding virtual storage device to invalidate data stored therein, the TRIM command is received at an interface layer in the hypervisor that translates the TRIM command to a SCSI command known as UMMAP. A SCSI virtualization layer converts the UNMAP command to a file system command to delete portions of the virtual storage device that is maintained as a file in the hypervisor's file system. Upon receiving the delete commands, the hypervisor's file system driver generates a TRIM command to invalidate the data stored in the solid-state memory device at locations corresponding to the portions of the file that are to be deleted. | 10-30-2014 |
20120324181 | DETECTING AND SUPPRESSING REDUNDANT INPUT-OUTPUT OPERATIONS - In a virtual machine, swap activities of a hypervisor and a guest OS are reconciled so that redundant input-output operations (IOs) can be avoided and a synchronous response time of the virtual machine improved. This is achieved with a map of memory pages to blocks of storage. For a write IO to write contents of a memory page into a target block, the map is examined to see if it contains a valid entry for the memory page. If the map contains the valid entry, the write IO is prevented from being issued and a data structure is updated so that subsequent IOs to the target block is redirected from the target block to a block that is associated with the physical memory page in the valid entry. On the other hand, if the map does not contain the valid entry, the write IO is issued. | 12-20-2012 |