公开(公告)号：US09128746B2

公开(公告)日：2015-09-08

申请号：US13853608

申请日：2013-03-29

Applicant: VMware, Inc.

Inventor： Dhanashankar Venkatesan ,  Prasanna Aithal

IPC: G06F9/455 ,  G06F3/06 ,  G06F12/02

CPC classification number: G06F9/45558 ,  G06F3/0608 ,  G06F12/0246 ,  G06F2009/45579

Abstract: In a computer system having virtual machines running therein, a hypervisor that supports execution of the virtual machines allocates blocks of storage to the virtual machines from a thinly provisioned logical block device. When the hypervisor deletes a file or receives commands to delete a file, the hypervisor moves the file into a delete directory. An unmap thread running in the background issues unmap commands to the storage device to release one or more blocks of the logical block device that are allocated to the files in the delete directory, so that the unmap operation can be executed asynchronously with respect to the file delete event.

Abstract translation: 在其中运行虚拟机的计算机系统中，支持虚拟机的执行的虚拟机管理程序从薄的逻辑块装置向虚拟机分配存储块。 当管理程序删除文件或接收删除文件的命令时，管理程序将文件移动到删除目录中。 在后台运行的unmap线程向存储设备发出unmap命令以释放分配给删除目录中的文件的逻辑块设备的一个或多个块，从而可以相对于该文件异步地执行取消映射操作 删除事件。