JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2014, Vol. 49 ›› Issue (09): 50-55.doi: 10.6040/j.issn.1671-9352.2.2014.436

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Optimization research of hot standy with Remus

ZOU De-qing1, XIANG Jun1, ZHANG Xiao-xu2, YUAN Bo-yang2, FENG Ming-lu2   

  1. 1. School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China;
    2. CECT-China COMM Communications Co., Ltd, Beijing 100022, China
  • Received:2014-06-24 Revised:2014-08-27 Online:2014-09-20 Published:2014-09-30

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Abstract: Hot Standby is a reliable solution for virtualization system to increase it's high availability.To achieve state synchronization and data synchronization between host node and backup node, traditional hot standby technology constantly generate checkpoint, send real-time status updates of host virtual machine to backup virtual machine. However, traditional checkpoint technology will cause bandwidth delay which will affect the high availability of this technology when it encountered intensive applications during backup. In addition, during the process of backup heartbeat may lose effectiveness which led to false positives about virtual machine's state and infect system's normal operation. Therefore, two optimizations based on Remus hot standby mode were proposed. One is to compress the memory checkpoint, the other is to design a client-oriented hot standby mechanism. Through the comparison of bandwidth-delay before and after the improvement, checkpoint compression based on XOR-RLE algorithm effectively reduces the bandwidth delay caused by the intensive applications, and the client-oriented hot standby mechanism substantially reduces false positives during hot standby process.

Key words: incremental checkpoint compression, memory intensive, high availability, virtual machine, hot standby

CLC Number: 

  • TP309
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