公开(公告)号：US20130042084A1

公开(公告)日：2013-02-14

申请号：US13653048

申请日：2012-10-16

Applicant: VMware, Inc.

Inventor： Maxime AUSTRUY ,  Jad CHAMCHAM ,  Christian LEROY ,  Christian CZEZATKE ,  Asit DESAI

IPC: G06F12/16

CPC classification number: G06F11/1662 ,  G06F11/2094

Abstract: In order to synchronize copies of a virtual disk, a virtualization layer maintains a first record of file system blocks of a first copy of the virtual disk that are modified during an access session by a virtual machine using the first copy of the virtual disk. The file system blocks correspond to a file system of the virtual disk. During an attempt to synchronize the first copy with a second copy of the virtual disk, (i) a second record of file system blocks that are currently used by the file system is obtained from the guest operating system, and (ii) file system blocks in the first copy of the virtual disk that are present in both the first record and the second record are copied into the second copy of the virtual disk.

Abstract translation: 为了同步虚拟磁盘的副本，虚拟化层维护虚拟磁盘的第一副本的文件系统块的第一记录，该虚拟磁盘的第一副本在虚拟机的访问会话期间使用虚拟磁盘的第一副本进行修改。 文件系统块对应于虚拟磁盘的文件系统。 在尝试将第一副本与虚拟磁盘的第二副本同步时，（i）从客户操作系统获得文件系统当前使用的文件系统块的第二记录，以及（ii）文件系统块 在第一个记录和第二个记录中存在的虚拟磁盘的第一个副本被复制到虚拟磁盘的第二个副本中。