Hello Petr, >Hi all, > >during this year's SUSE HackWeek, my colleague started work on enabling >kernel core files in gdb. I realized that there would be at least four >different programs implementing read access to kernel dump files: > > 1. the crash utility > 2. makedumpfile (when re-filtering) > 3. kdumpid (my project to get kernel version from a dump file) > 4. gdb-kdump (started by my colleague during HackWeek) > >At this point, I felt that's too much re-inventing the wheel again and >again, so I took my current code from kdumpid and adapted it as a >library that can be used by everybody: > > https://github.com/ptesarik/libkdumpfile I agree with you, your idea sounds reasonable. >In its current shape, it's usable, but far from complete. > >Things that work already: > - identify kdump file format > - parsed meta-information from the header > - open ELF, diskdump, makedumpfile, LKCD > - read data by physical address (incl. Xen Dom0) > - read data by Xen machine address > >Things still on my TODO list: > - more formats: sadump, kvmdump, libvirt, xc_core, xc_save > - determine phys_base in ELF files > - determine kernel release if not found in headers Aren't you going to make writer methods ? If makedumpfile uses the library, I want to get rid of the dump format specific codes completely from makedumpfile, otherwise "re-inventing" will still occur. I suppose that other tools don't need writer methods, so I think it would be better if I make them. >Ideally, I would like to replace all current implementations with this >library, so if a new file format appears, or a new feature is added to >one of the files, it can be immediately used by all kdump-related tools. > >Please let me know what you think. >Oh, and if you're developing such a tool, let me know which features >should be added. I've started an experiment to find out practical problems in switching to using the library. I'll let you know if I find any problems. Thanks Atsushi Kumagai > >Regards, >Petr Tesarik > >-- >Crash-utility mailing list >Crash-utility at redhat.com >https://www.redhat.com/mailman/listinfo/crash-utility
