METHOD AND SYSTEM FOR PRESERVING DUMP DATA UPON A CRASH OF THE OPERATING SYSTEM

摘要

The invention discloses a method for preserving crash dump data in case of operating system crash in a diskless device. The method and the system according to the invention uses two stage booting where in a primary and a secondary kernel are loaded. The primary kernel is a compact kernel that comprises a limited set of functionality and the secondary kernel is a fully functional kernel used for running applications. In case of a crash of the secondary kernel, the kernel prepares a jump back to the primary kernel. Then the primary kernel preserves the crash dump support data and secondary kernel's RAM contents by sending it to a remote system which can store it on a nonvolatile memory.