发明申请
- 专利标题: METHOD AND SYSTEM FOR ENABLING CHECKPOINTING FAULT TOLERANCE ACROSS REMOTE VIRTUAL MACHINES
- 专利标题(中): 通过远程虚拟机实现检查故障容错的方法和系统
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申请号: US12781875申请日: 2010-05-18
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公开(公告)号: US20110289345A1公开(公告)日: 2011-11-24
- 发明人: Ole Agesen , Raviprasad Mummidi , Pratap Subrahmanyam
- 申请人: Ole Agesen , Raviprasad Mummidi , Pratap Subrahmanyam
- 申请人地址: US CA Palo Alto
- 专利权人: VMWARE, INC.
- 当前专利权人: VMWARE, INC.
- 当前专利权人地址: US CA Palo Alto
- 主分类号: G06F11/20
- IPC分类号: G06F11/20 ; G06F12/16 ; G06F11/16 ; G06F11/00
摘要:
A checkpointing fault tolerance network architecture enables a backup computer system to be remotely located from a primary computer system. An intermediary computer system is situated between the primary computer system and the backup computer system to manage the transmission of checkpoint information to the backup VM in an efficient manner. The intermediary computer system is networked to the primary VM through a high bandwidth connection but is networked to the backup VM through a lower bandwidth connection. The intermediary computer system identifies updated data corresponding to memory pages that have been least recently modified by the primary VM and transmits such updated data to the backup VM through the low bandwidth connection. In such manner, the intermediary computer system economizes the bandwidth capacity of the low bandwidth connection, holding back updated data corresponding to more recently modified memory pages, since such memory pages may be more likely to be updated again in the future.