Using Kdump for examining Linux Kernel crashes
The kexec mechanism has components in the kernel as well as in user space. The kernel provides few system calls for kexec reboot functionality. A user space tool called kexec-tools uses those calls and provides an executable to load and boot the second kernel. Sometimes a distribution also adds wrappers on top of kexec-tools, which helps capture and save the dump for various dump target configurations. In this article, I will use the name distro-kexec-tools to avoid confusion between upstream kexec-tools and distro-specific kexec-tools code. My example will use the Fedora Linux distribution.
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