Hi On Thu, Oct 16, 2014 at 9:11 AM, Leonidas Spyropoulos <artafinde@xxxxxxxxx> wrote: > On 16/10/14, Anatol Pomozov wrote: >> When you say "produce a core dumps" what exactly you see. How do you >> know it produces the kernel dump? >> > I usually build the AUR package from within X. But sometimes I do it on > another TTY. On these cases where I do it from TTY I was able to see > partly a core dump (messages about kernel panic and then some more > output). The problem was that it was part of it and I could not scroll > to see the whole message. So you don't need full kernel memory dump that preserves content of RAM on crash. You just need kernel stack trace message, do you? Check pause_on_oops kernel parameter https://www.kernel.org/doc/Documentation/kernel-parameters.txt it might help you to prevent scrolling. Another option is to use serial port and watch kernel messages from a remote machine https://wiki.archlinux.org/index.php/Working_with_the_serial_console > >> >> After the crash happens kernel cannot write anything to disk nor send >> via network. Dealing with disk/network/... requires valid kernel data >> structures and you don't have them anymore. >> >> Once kernel crashed it has only one option - reboot. >> >> Check kdump https://wiki.archlinux.org/index.php/Kdump - it is >> probably what you are looking for. > > But that invoves a kernel compilation (right?) and I seem to end up in the same > problem as before - > kernel crashing when compiling big projects. Hm... I would recommend you to run memory test to make sure it is not a hardware problem with your RAM. > > Is there a kernel with Kdump enabled already? I do not think so. I was compiling my custom kdump kernel, but it can be done on other machine and then be installed on the problematic machine.
