Dear Song, This is Xiaosong Ma from Qatar Computing Research Institute. I am writing to follow up with the questions posed by a co-author from Tsinghua U, regarding upstreaming our alternative md implementation that is designed to significantly reduce SSD RAID latency (both median and tail) for large SSD pools (such as 20-disk or more). We read the Linux kernel upstreaming instructions, and believe that our implementation has excellent separability from the current code base (as a plug-and-play module with identical interfaces as md). Meanwhile, we wonder whether there are standard test cases or preferred applications that we should test our system with, before doing code cleaning up. Your guidance is much appreciated. Best regards, Xiaosong Dr. Xiaosong Ma Principal Scientist Distributed Systems Qatar Computing Research Institute Hamad Bin Khalifa University HBKU – Research Complex P.O. Box 5825 Doha, Qatar Tel: +974 4454 6190 www.qcri.qa <http://www.qcri.qa> ---------- Forwarded message --------- From: 姜天洋 <ty-jiang18@xxxxxxxxxxxxxxxxxxxxx> Date: Tue, Apr 14, 2020 at 2:10 PM Subject: Fw: some questions about uploading a Linux kernel driver To: Dr. Xiaosong Ma <xma@xxxxxxxxxxx>, gyzh@xxxxxxxxxxxxxxx <gyzh@xxxxxxxxxxxxxxx>, wei-jy19@xxxxxxxxxxxxxxxxxxxxx <wei-jy19@xxxxxxxxxxxxxxxxxxxxx> -----原始邮件----- 发件人:"姜天洋" <ty-jiang18@xxxxxxxxxxxxxxxxxxxxx> 发送时间:2020-04-08 20:34:44 (星期三) 收件人: song@xxxxxxxxxx 抄送: linux-raid@xxxxxxxxxxxxxxx 主题: some questions about uploading a Linux kernel driver Hello I am Tianyang JIANG, a PhD student from Tsinghua U. We finish a study which focuses on achieving consistent low latency for SSD arrays, especially timing tail latency in RAID level. We implement a Linux kernel driver called FusionRAID and we are interested in uploading codes to Linux upstream. I notice that I should seperate my changes and style-check my codes before submitting. Are there any other issues I need to be aware of? Thank you for your time.
