Hi CAI, Thank you for testing and a good point. CAI Qian wrote: >> makedumpfile version 1.3.4 is released. >> Your comments/patches are welcome. >> >> Changelog: >> o New feature >> - Support kdump-compressed format for input file. (by Takao Indoh) >> A new makedumpfile can read dumpfile which is kdump-compressed format >> instead of /proc/vmcore and re-filter it. > > Does it need to specify either a vmlinux or vmcoreinfo file? Yes, we need to do it for re-filtering now. But it is not difficult to implement a feature that it is not necessary to specify either a vmlinux or vmcoreinfo file for re-filtering. I will try to implement the feature. Thanks Ken'ichi Ohmichi