Weihang Jiang Chongfeng Hu Shankar Pasupathy Arkady Kanevsky Zhenmin Li Yuanyuan Zhou Understanding Customer Problem Troubleshooting from Storage System Logs. 43-56 2009 FAST http://www.usenix.org/events/fast09/tech/full_papers/jiang/jiang.pdf conf/fast/2009 db/conf/fast/fast2009.html#JiangHPKLZ09