Unnamed repository
3053d95923
Resolves: RHEL-83645
Upstream: kdump-utils
commit fe18f933baed9eaa18e0c2427aaca4640d8f6fa1
Author: Lichen Liu <lichliu@redhat.com>
Date: Thu Mar 6 10:21:43 2025 +0800
kdump-lib.sh: Adjust default crashkernel reservation for x86_64 and s390x
With new kernel features being added, both the kernel itself and the initramfs
have gradually increased in size.
Previously, we used squashfs to package and reduce the initramfs size. However,
since squashfs will be replaced by erofs, we have transitioned to erofs. The
compression algorithms supported by erofs differ from those used in squashfs.
In previous squashfs implementations, we used zstd compression, but in RHEL-10,
the erofs implementation in the kernel does not yet support zstd decompression.
As a result, we had to switch to other compression algorithms, leading to
changes in the initramfs size.
In some scenarios, the previous 192M crashkernel reservation is no longer
sufficient. Recent NFS testing has shown that at least 238M is required to
successfully capture a vmcore. Given this, we have updated the default
crashkernel reservation to start from 2G, with 256M allocated for crash
recovery.
Since 256M is a significant portion of memory on smaller systems, we have
decided not to reserve crashkernel memory by default on systems with less
than 2G of RAM. However, users can still manually adjust the `crashkernel=`
setting via tools like `grubby` if needed.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
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||
|---|---|---|
| tests | ||
| .editorconfig | ||
| .gitignore | ||
| 60-fadump.install | ||
| 60-kdump.install | ||
| 92-crashkernel.install | ||
| 98-kexec.rules | ||
| 98-kexec.rules.ppc64 | ||
| 99-kdump.conf | ||
| crashkernel-howto.txt | ||
| dracut-early-kdump-module-setup.sh | ||
| dracut-early-kdump.sh | ||
| dracut-fadump-init-fadump.sh | ||
| dracut-fadump-module-setup.sh | ||
| dracut-kdump-capture.service | ||
| dracut-kdump-emergency.service | ||
| dracut-kdump-emergency.target | ||
| dracut-kdump.sh | ||
| dracut-module-setup.sh | ||
| dracut-monitor_dd_progress | ||
| early-kdump-howto.txt | ||
| fadump-howto.txt | ||
| gating.yaml | ||
| gen-kdump-conf.sh | ||
| kdump-dep-generator.sh | ||
| kdump-in-cluster-environment.txt | ||
| kdump-lib-initramfs.sh | ||
| kdump-lib.sh | ||
| kdump-logger.sh | ||
| kdump-migrate-action.sh | ||
| kdump-restart.sh | ||
| kdump-udev-throttler | ||
| kdump.conf.5 | ||
| kdump.service | ||
| kdump.sysconfig | ||
| kdump.sysconfig.aarch64 | ||
| kdump.sysconfig.i386 | ||
| kdump.sysconfig.ppc64 | ||
| kdump.sysconfig.ppc64le | ||
| kdump.sysconfig.s390x | ||
| kdump.sysconfig.x86_64 | ||
| kdumpctl | ||
| kdumpctl.8 | ||
| kexec_file-add-kexec_file-flag-to-support-debug-prin.patch | ||
| kexec-kdump-howto.txt | ||
| kexec-tools.spec | ||
| kexec-update-manpage-with-explicit-mention-of-clean-.patch | ||
| live-image-kdump-howto.txt | ||
| mkdumprd | ||
| mkdumprd.8 | ||
| mkfadumprd | ||
| README | ||
| sources | ||
| supported-kdump-targets.txt | ||
| zanata-notes.txt | ||
Adding a patch to kexec-tools ============================= There is a mailing list kexec@lists.fedoraproject.org where all the dicussion related to fedora kexec-tools happen. All the patches are posted there for inclusion and committed to kexec-tools after review. So if you want your patches to be included in fedora kexec-tools package, post these to kexec@lists.fedoraproject.org. One can subscribe to list and browse through archives here. https://admin.fedoraproject.org/mailman/listinfo/kexec