Implementation and Evaluation of the Block I/O Interface between the iSCSI Target and the Storage Device

Author

Wu, Suzhen ; Chen, Jianxi ; Feng, Dan ; Mao, Bo

Author_Institution

Huazhong Univ. of Sci. & Technol., Wuhan

fYear

2007

fDate

21-23 Nov. 2007

Firstpage

1451

Lastpage

1456

Abstract

The iSCSI protocol allows the block level storage data to be transported over the mature TCP/IP network. There are different interfaces between the iSCSI target and the storage device, such as disk I/O, file I/O and memory I/O interface. But these interfaces either lack of flexibility and universality or aggravate the system overhead and influence the system performance. Leveraging the flexibility and the performance is becoming critical to the iSCSI storage system. In this paper, we implement a block I/O interface between the iSCSI target and the storage device which shields the diversity of storage devices and offers higher performance than current iSCSI software implementations. Experiment results evaluated by iometer, a popular benchmark program, have shown dramatic performance gained with the block I/O interface.

Keywords

peripheral interfaces; storage area networks; transport protocols; TCP-IP network; block I/O interface; iSCSI protocol; iSCSI target device; storage area networks; storage device; Cache storage; Educational technology; File systems; IP networks; Network servers; Open source software; Storage area networks; System performance; TCPIP; Transport protocols;

fLanguage

English

Publisher

ieee

Conference_Titel

Convergence Information Technology, 2007. International Conference on

Conference_Location

Gyeongju

Print_ISBN

0-7695-3038-9

Type

conf

DOI

10.1109/ICCIT.2007.159

Filename

4420459