标题: 扩展档案系统日志功能至非挥发性主记忆体
Extending file-system journaling to non-volatile main memory
作者: 张逸康
Chang, Yi-Kang
张立平
Chang, Li-Pin
资讯科学与工程研究所
关键字: 日志式档案系统;非挥发性记忆体;电池备援记忆体;资料回复;电源中断;journaling file system;nvram;battery backup memory;data recovery;power interrupt
公开日期: 2012
摘要: 一般系统如果遇到断电或是系统崩溃, 主记忆体上资料都将遗失。对于资料正确性要求高的环境, 会使用UPS(uninterruptible power supply) 保护整个系统, 使其能够安全关机。而UPS 为了维持整个系统运作, 需要不少电量, 尤其大型伺服器可能使用了上百台的主机跟储存装置, 若要以UPS 保护系统则需要非常昂贵的成本。我们提出了一个方法使其能够保护资料,且不需要太大的成本。我们用非挥发性记忆体(或是电池备援记忆体) 作为主记忆体, 使其在断电后可以保留住资料, 维持记忆体电力直到电源恢复。复电后再依照我们所设计之流程, 集合档案系统日志功能将资料写回磁碟, 减少资料损失。
In general system, all data in main memory are lost when occur power interruption.Use UPS(uninterruptible power supply) to protect entire system is a approach for reduce data losing. But it is also expensive for large system which need a high capacity UPS.We propose a new apporach:use standby power to protect main memory instead protect entire system. Maintain in-memory data until power restore and then write data to disk.We integrate characteristic of non-volatile memory and file-system journaling for reduce data losing in on power interrupt.
URI: http://140.113.39.130/cdrfb3/record/nctu/#GT079955568
http://hdl.handle.net/11536/50482
显示于类别:Thesis


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