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    • 10. 发明授权
    • System and method for file-based virtual machine incremental backup
    • 基于文件的虚拟机增量备份的系统和方法
    • US08751515B1
    • 2014-06-10
    • US13436460
    • 2012-03-30
    • Jian XingAnand Raj
    • Jian XingAnand Raj
    • G06F7/00
    • G06F17/30073
    • A source virtual machine (VM) disk file associated with a VM is parsed to generate metadata representing files stored in a virtual storage device of the VM, where the VM is one of VMs hosted by a VM monitor (VMM). In response to a request for an incremental backup of files stored in the source VM disk file, a file attribute of each of the files is examined based on the metadata to identify one or more files that have been modified within a predetermined past period of time. File records associated with the identified files are determined based on the metadata that have been modified within the predetermined past period of time. The identified file records are then backed up from the source VM disk file to a target VM disk file, without having to back up unmodified files in the source VM disk file.
    • 解析与虚拟机关联的源虚拟机(VM)磁盘文件以生成表示存储在虚拟机的虚拟存储设备中的文件的元数据,其中虚拟机是虚拟机监视器(VMM)托管的虚拟机之一。 响应于存储在源VM磁盘文件中的文件的增量备份的请求,基于元数据检查每个文件的文件属性,以识别在预定的过去时间段内已被修改的一个或多个文件 。 基于已经在预定的过去时间段内被修改的元数据来确定与所识别的文件相关联的文件记录。 然后,将标识的文件记录从源VM磁盘文件备份到目标VM磁盘文件,而无需备份源虚拟机磁盘文件中的未修改的文件。