Hello Kumagai-san, Following a suggestion from Dave Anderson, I have tested the makedumpfile --dump-dmesg option. After some research, I realized that the option was no longer working on 3.5 kernel and later. Here is an example of the result (on Ubuntu Quantal) : # makedumpfile --dump-dmesg /proc/vmcore /tmp/dmesg dump_dmesg: Can't find some symbols for log_buf. makedumpfile Failed. On 3.5 kernel and later, the log_end symbol no longer exists. This is caused by the change from byte-buffer structure to variable-length record buffer of the kernel log buffer introduced by this commit : http://goo.gl/NCgLI I am curious to know if you were aware of this change and if you had done some work on modifying dump_dmesg() accordingly ? Just so I don't go off and try to work on something that you have already solved. Kind regards, ...Louis -- Louis Bouchard Backline Support Analyst Canonical Ltd Ubuntu support: http://landscape.canonical.com
