I use netconsole which sends the kernel ring buffer updates to a remote machine through UDP .. And then you can use netcat command to dump the remote udp logs to a file and view it. I have never missed any log messages using this approach.. http://www.kernel.org/doc/Documentation/networking/netconsole.txt My commands are : in the client machine ( which crashes ): modprobe netconsole netconsole=@/eth0,@128.105.102.217/ where the ip address "128.105.102.217" is the remote machine's ip address. ( which captures logs ) in the remote machine I run the command : netcat -u -l -p 6666 | tee crashlog also, iptables --flush helped me remove the udp packet filters which sometimes can filter out the netconsole udp messages. thanks, -Leo On Tue, Apr 26, 2011 at 4:48 AM, Amit Virdi <amit.virdi@xxxxxx> wrote: > Hi > > I'm debugging a system crash. I got OOPS message and found the buggy piece > of code. I wish I had the output of dmesg just before the crash. In other > words, I want to view the last messages collected by the ring buffer used by > dmesg. > > The log messages are certainly being appended to some logfile in the RAM. > How can I find the address where the logfile is being created or how can I > extract the logfile? > > Thanks n Regards > Amit Virdi > -- > To unsubscribe from this list: send the line "unsubscribe linux-newbie" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.linux-learn.org/faqs > -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
