Hello, I want to save the access log of disk in block level. The number of block in disk and the I/O type (R/W) of the request are needed for me. What should I modify to save the log? In block cache code? or EXT{2,3}? Thank you in advance. -- Seongsu's blog - http://www.senux.com/ APL is a write-only language. I can write programs in APL, but I can't read any of them. -- Roy Keir -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/