公开(公告)号：US20130275378A1

公开(公告)日：2013-10-17

申请号：US13912563

申请日：2013-06-07

Applicant: VMware, Inc.

Inventor： Ali MASHTIZADEH ,  Osten Kit COLBERT

IPC: G06F17/30

CPC classification number: G06F17/30289 ,  G06F3/0617 ,  G06F3/0647 ,  G06F3/0664 ,  G06F3/0683 ,  G06F9/45558 ,  G06F2009/4557

Abstract: A disclosed method includes distinguishing static and dynamic persistent data, copying the static persistent data at the source data store to the destination data store on a basis of frequencies of updates, copying the dynamic persistent data to the destination data store, updating a bitmap data structure during the copying of the dynamic persistent data to indicate which blocks of the dynamic persistent data have been modified during the copying step, identifying the blocks that have been modified during the copying step using the bitmap data structure, and iteratively copying the identified blocks to the destination data store. The method may further include determining when the number of the identified blocks is below a predetermined threshold and suspending the virtual machine prior to the next copying step.

Abstract translation: 所公开的方法包括区分静态和动态持久性数据，基于更新的频率将源数据存储处的静态持久数据复制到目的地数据存储，将动态持久数据复制到目的地数据存储，更新位图数据结构 在复制动态持久性数据期间，以指示在复制步骤期间已经修改了动态持久数据块的哪些块，在使用位图数据结构的复制步骤期间识别已被修改的块，并且将所识别的块迭代地复制到 目的地数据存储。 该方法还可以包括确定所识别的块的数量何时低于预定阈值，并且在下一个复制步骤之前暂停虚拟机。

公开(公告)号：US20150301931A1

公开(公告)日：2015-10-22

申请号：US14790604

申请日：2015-07-02

Applicant: VMware, Inc.

Inventor： Irfan AHMAD ,  Gabriel TARASUK-LEVIN ,  Ali MASHTIZADEH ,  Philip Peter MOLTMANN

IPC: G06F12/02

CPC classification number: G06F12/023 ,  G06F9/5016 ,  G06F12/0284 ,  G06F2212/1044 ,  G06F2212/152

Abstract: Memory pages that are allocated to a memory consumer and continue to be accessed by the memory consumer are included in a free list, so that they may be immediately allocated to another memory consumer as needed during the course of normal operation without preserving the original contents of the memory page. When a memory page in the free list is accessed to perform a read, a generation number associated with the memory page is compared with a stored copy. If the two match, the read is performed on the memory page. If the two do not match, the read is not performed on the memory page.

Abstract translation: 分配给存储器使用者并继续被存储器消费者访问的存储器页面被包括在空闲列表中，使得它们可以在正常操作过程中根据需要被立即分配给另一个存储器消费者，而不保留原始内容 内存页面。 当访问空闲列表中的存储器页面以执行读取时，将与存储器页面相关联的代数与存储的副本进行比较。 如果两者匹配，则在内存页上执行读取。 如果两者不匹配，则不会在内存页上执行读取。

公开(公告)号：US20140189041A1

公开(公告)日：2014-07-03

申请号：US14202184

申请日：2014-03-10

Applicant: VMware, Inc.

Inventor： Ali MASHTIZADEH ,  Gabriel TARASUK-LEVIN

IPC: G06F15/173 ,  G06F9/455 ,  G06F12/08

CPC classification number: G06F15/17331 ,  G06F3/0647 ,  G06F9/45545 ,  G06F9/45558 ,  G06F9/4856 ,  G06F12/08 ,  G06F2009/4557 ,  G06F2009/45583

Abstract: A method for transferring guest physical memory from a source host to a destination host during live migration of a virtual machine (VM) involves (a) transmitting pages of the guest physical memory from the source host to the destination host over a network connection, (b) transferring state information from the source host to the destination host, (c) while performance benefits regarding continued access to the guest physical memory on the source host persist, using the transferred state information to run the VM on the destination host in place of running the VM on the source host, and (d) while the VM is running on the destination host, writing pages of the guest physical memory from the source host to a shared datastore such that the destination host can retrieve the written guest physical pages from the shared datastore.

Abstract translation: 一种用于在虚拟机（VM）的实时迁移期间将客户机物理存储器从源主机传送到目标主机的方法包括：（a）通过网络连接将客户物理存储器的页面从源主机发送到目的主机; b）将状态信息从源主机传送到目的地主机，（c）虽然在源主机上持续访问访客物理内存的性能有利于使用转移的状态信息在目的地主机上运行VM来代替 在源主机上运行VM，以及（d）当VM在目标主机上运行时，将客户机物理内存的页面从源主机写入共享数据存储区，以便目标主机可以从 共享数据存储。

公开(公告)号：US20130205113A1

公开(公告)日：2013-08-08

申请号：US13760837

申请日：2013-02-06

Applicant: VMWARE, INC.

Inventor： Irfan AHMAD ,  Gabriel TARASUK-LEVIN ,  Ali MASHTIZADEH ,  Philip Peter MOLTMANN

IPC: G06F12/02

CPC classification number: G06F12/023 ,  G06F9/5016 ,  G06F12/0284 ,  G06F2212/1044 ,  G06F2212/152

Abstract: Memory pages that are allocated to a memory consumer and continue to be accessed by the memory consumer are included in a free list, so that they may be immediately allocated to another memory consumer as needed during the course of normal operation without preserving the original contents of the memory page. When a memory page in the free list is accessed to perform a read, a generation number associated with the memory page is compared with a stored copy. If the two match, the read is performed on the memory page. If the two do not match, the read is not performed on the memory page.