By default, kdump-tools does not reserve enough memory for a crashkernel on arm64. The smallest reservation I've been able to get away with on my test machine (a Cavium ThunderX crb1s) is 512M.
While kdump-tools currently supports architecture-specific configs, it currently has issues that I am attempting to address here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863858 Adding an arm64 config before that is resolved in Debian may lead to upgrade complications, so I'd like to wait until is fixed before installing an arm64-specific config. This means that, for now, arm64 users will need to manually edit their /etc/default/grub.d/kdump- tools.default config to contain: GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT crashkernel=1G-:512M" ** Bug watch added: Debian Bug tracker #863858 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863858 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1694859 Title: arm64 kernel crashdump support To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1694859/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
