標題: 擴展檔案系統日誌功能至非揮發性主記憶體
Extending file-system journaling to non-volatile main memory
作者: 張逸康
Chang, Yi-Kang
張立平
Chang, Li-Pin
資訊科學與工程研究所
關鍵字: 日誌式檔案系統;非揮發性記憶體;電池備援記憶體;資料回復;電源中斷;journaling file system;nvram;battery backup memory;data recovery;power interrupt
公開日期: 2012
摘要: 一般系統如果遇到斷電或是系統崩潰, 主記憶體上資料都將遺失。對於資料正確性要求高的環境, 會使用UPS(uninterruptible power supply) 保護整個系統, 使其能夠安全關機。而UPS 為了維持整個系統運作, 需要不少電量, 尤其大型伺服器可能使用了上百台的主機跟儲存裝置, 若要以UPS 保護系統則需要非常昂貴的成本。我們提出了一個方法使其能夠保護資料,且不需要太大的成本。我們用非揮發性記憶體(或是電池備援記憶體) 作為主記憶體, 使其在斷電後可以保留住資料, 維持記憶體電力直到電源恢復。復電後再依照我們所設計之流程, 集合檔案系統日誌功能將資料寫回磁碟, 減少資料損失。
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
Appears in Collections:Thesis


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