On 2024/09/20 16:31, Martin Friedrich wrote: > Hello, > > I try to identify the root-cause of an issue with kdump & makedumpfile which results in dumps to have a size of the system memory. > Kdump-tools/makedumpfile has been configured to strip most pages with the flags: " -c -d 31" and transfer the dump to an ssh target. > > I'm unable to replicate the issue by crashing kernel using sysrq-triggers. As long the system crashed by sysrq-trigger, the dump has the correct size and completes successfully. > But as soon a system crashes for other reasons, dumps get huge and fail to transfer to the ssh target due to their size. > > Our servers (x64/aarch64) are running Ubuntu 22.04 with a self built kernel 6.6.32 (config attached) and makedumpfile (backported 1.7.5-3 to Ubuntu 22.04). > > Am I missing something within the kernel config which could cause this behavior? hmm, I have not seen such a behavior. - what happens with the latest (bd30437c6292) makedumpfile? - is it possible to get makedumpfile logs with "--message-level 31" on sysrq crash and other reasons? (to compare the logs including stats) Thanks, Kazu _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
