公开(公告)号：US20150277791A1

公开(公告)日：2015-10-01

申请号：US14231168

申请日：2014-03-31

Applicant: VMware, Inc.

Inventor： Xinhui LI ,  Luke LU ,  Deng LIU

IPC: G06F3/06

CPC classification number: G06F3/0689 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/0665 ,  G06F3/067 ,  G06F12/0223 ,  G06F2003/0692

Abstract: A method for allocating storage for a virtual machine includes receiving a request to allocate a block of disk storage on a physical disk to a virtual disk associated with the virtual machine. The method also includes identifying a plurality of available blocks on the physical disk, each of the plurality of available blocks defining a radial distance from a center axis of a platter of the physical disk. The method further includes determining which of the plurality of available blocks has a greatest radial distance from the center axis of the platter and, based on the determining, selecting an allocation block from the plurality of available blocks, the allocation block having the greatest radial distance from the center axis of the platter. The method also includes allocating the allocation block to the virtual machine.

Abstract translation: 用于为虚拟机分配存储的方法包括接收将物理磁盘上的磁盘存储块分配给与虚拟机相关联的虚拟磁盘的请求。 该方法还包括识别物理盘上的多个可用块，多个可用块中的每一个定义与物理盘的盘的中心轴线的径向距离。 所述方法还包括确定所述多个可用块中的哪一个距离所述盘的中心轴线具有最大径向距离，并且基于所述确定，从所述多个可用块中选择分配块，所述分配块具有最大的径向距离 从拼盘的中心轴。 该方法还包括将分配块分配给虚拟机。

公开(公告)号：US20180253257A1

公开(公告)日：2018-09-06

申请号：US15962733

申请日：2018-04-25

Applicant: VMware, Inc.

Inventor： Deng LIU ,  Thomas A. PHELAN

IPC: G06F3/06 ,  G06F13/16 ,  G06F12/10

CPC classification number: G06F3/0652 ,  G06F3/0604 ,  G06F3/064 ,  G06F3/0664 ,  G06F3/0679 ,  G06F3/0688 ,  G06F9/45558 ,  G06F12/0246 ,  G06F12/10 ,  G06F13/1668 ,  G06F2009/45579 ,  G06F2212/1044 ,  G06F2212/151 ,  G06F2212/214 ,  G06F2212/657 ,  G06F2212/7205 ,  G06F2213/0032 ,  G06F2213/0036 ,  G11B19/28

Abstract: 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.