System and method for efficient swap space allocation in a virtualized environment
    21.
    发明授权
    System and method for efficient swap space allocation in a virtualized environment 有权
    虚拟化环境中有效的交换空间分配的系统和方法

    公开(公告)号:US09524233B2

    公开(公告)日:2016-12-20

    申请号:US13785235

    申请日:2013-03-05

    Applicant: VMware, Inc.

    Abstract: A technique for efficient swap space management creates a swap reservation file using thick provisioning to accommodate a maximum amount of memory reclamation from a set of one or more associated virtual machines (VMs). A VM swap file is created for each VM using thin provisioning. When a new block is needed to accommodate page swaps to a given VM swap file, a block is removed from the swap reservation file and a block is added to the VM swap file, thereby maintaining a net zero difference in overall swap storage. The removed block and the added block may be the same storage block if a block move operation is supported by a file system implementing the swap reservation file and VM swap files. The technique also accommodates swap space management of resource pools.

    Abstract translation: 用于高效交换空间管理的技术使用厚配置来创建交换预留文件,以适应来自一组或多个相关虚拟机(VM)的最大量的内存回收。 使用精简配置为每个VM创建VM交换文件。 当需要新的块来容纳到给定的VM交换文件的页面交换时,从交换预留文件中移除一个块,并将一个块添加到VM交换文件中,从而在整个交换存储中保持净零点差异。 如果实施交换预留文件和VM交换文件的文件系统支持块移动操作,则移除的块和添加的块可能是相同的存储块。 该技术还适应资源池的交换空间管理。

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