kexec-tools/99-kdump.conf

dracutmodules=''
add_dracutmodules=' kdumpbase '
omit_dracutmodules='rdma plymouth resume ifcfg earlykdump '
omit_drivers+=' nouveau amdgpu '
Add kdump dracut config Resolves: RHEL-49590 Upstream: https://github.com/rhkdump/kdump-utils Conflict: Yes, kexec-tools is split into 3 parts upstream, some changes should be applied to kdump-utils Makefile, but RHEL-9 kexec-tools doesn't have that. Also missing upstream commits: - 1732a3b(mkdumprd: Omit rdma module) - 7fec2f56(mkdumprd: simplify handling of dracut arguments) commit dacb34341113fa925c15e28a7ce56a80dd370e2f Author: Lichen Liu <lichliu@redhat.com> Date: Tue Nov 5 12:07:42 2024 +0800 Add kdump dracut config In some cases, customizing the first kernel's initrd is necessary by modifying the dracut `omit_dracutmodules` options, such as in Bootc or CoreOS scenarios [1]. However, these changes can unintentionally break existing functionality in kdump. For instance, setting `omit_dracutmodules='nfs'` prevents the `nfs` module from being added. Additionally, some dracut configurations [2] use `dracutmodules+='some modules'` instead of `add_dracutmodules+='some modules'`. When `dracutmodules` is non-empty, dracut includes only the specified modules, which can result in an initrd that lacks necessary modules, causing kdump to fail. Dracut upstream support --add-confdir now, kdump can use this option when building kdump initramfs. This patch moved the hardcoded dracutmodules from mkdumprd to the new conf file /lib/kdump/dracut.conf.d/99-kdump.conf, it is easier to check and modify to omit or add certain modules. This patch also initialize dracutmodules to empty to avoid the influence of other configurations. See also: [1] https://github.com/rhkdump/kdump-utils/issues/11 [2] https://issues.redhat.com/browse/RHEL-49590?focusedId=25197134&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-25197134 Suggested-by: Dave Young <dyoung@redhat.com> Suggested-by: Colin Walters <walters@verbum.org> Signed-off-by: Lichen Liu <lichliu@redhat.com> Signed-off-by: Lichen Liu <lichliu@redhat.com> 2024-12-05 02:45:27 +00:00			`dracutmodules=''`
			`add_dracutmodules=' kdumpbase '`
99-kdump.conf: Omit rdma module Resolves: https://issues.redhat.com/browse/RHEL-66065 Conflict: in upstream, 99-kdump.conf is introduced by commit dacb34341 (Add kdump dracut config). And it has been back ported to RHEL-9. So implementing the omit based on the new skeleton. commit 1732a3bd477b3bc0b078b0f070024f350c22ef2b Author: Pingfan Liu <piliu@redhat.com> Date: Mon Sep 9 11:52:00 2024 +0800 mkdumprd: Omit rdma module Resolves: https://issues.redhat.com/browse/RHEL-57006 05rdma dracut module from rdma-core is installed unconditionally even if kdump dumps the vmcore to local disk. And those kmod will cost additional 200M memory on x86, which likely triggers OOM. Since the Infiniband (and in fact none of RDMA devices are supported in kdump), exclude the rdma dracut module explicitly. Signed-off-by: Pingfan Liu <piliu@redhat.com> 2025-03-04 02:19:29 +00:00			`omit_dracutmodules='rdma plymouth resume ifcfg earlykdump '`
99-kdump.conf: Omit nouveau and amdgpu module Resolves: https://bugzilla.redhat.com/RHEL-52304 Upstream: kdump-utils commit 77a0246cde3505777cfa1f9c2a1a834e76b7eed6 Author: Lichen Liu <lichliu@redhat.com> Date: Mon Jan 13 17:39:56 2025 +0800 99-kdump.conf: Omit nouveau and amdgpu module Resolves: https://issues.redhat.com/browse/RHEL-52304 The GPU module provides no significant utility in second kernel, and it introduces firmware that occupies lots of memory, which is critical in the constrained environment of kdump. Omit it helps reduce memory usage and optimize the crash recovery process. See also: https://access.redhat.com/solutions/6977793 https://access.redhat.com/solutions/7100186 Signed-off-by: Lichen Liu <lichliu@redhat.com> Signed-off-by: Lichen Liu <lichliu@redhat.com> 2025-01-17 02:20:22 +00:00			`omit_drivers+=' nouveau amdgpu '`