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Reset crashkernel to default value if newly installed kernel has crashkernel=auto 

Resolves: bz2168504
Upstream: RHEL-only

After leapp upgrade from 8.8 to 9.2 on Azure,  RHEL9 kernel has
crashkernel=auto. This happens because kexec-tools's posttrans scriptlet
is executed before kernel's posttrans scriptlet (which in turn runs the
kernel-install hooks). One of the kernel-install hook is responsible for
adding a new boot entry for the new kernel. So when kexec-tools's posttrans
scriptlet is running, RHEL9 kernel is yet to have a boot entry so
kexec-tools couldn't set up the crashkernel parameter. Later one
kernel-install hook makes RHEL9 kernel inherit crashkernel=auto.

Fix this issue by letting 92-crashkernel.install reset crashkernel=auto.

Reported-by: Yuxin Sun <yuxisun@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
This commit is contained in:
Coiby Xu 2023-02-21 11:37:47 +08:00
parent ef81bb9f44
commit ae272e2df8
1 changed files with 2 additions and 0 deletions
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2
kdumpctl
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@ -1770,6 +1770,8 @@ reset_crashkernel_for_installed_kernel()
if _update_kernel_cmdline "$_installed_kernel" "$_crashkernel_running" "$_dump_mode_running" "$_fadump_val_running"; then
echo "kexec-tools has reset $_installed_kernel to use the new default crashkernel value $_crashkernel_running"
fi
elif [[ $_crashkernel == auto ]]; then
reset_crashkernel "--kernel=$_installed_kernel"
fi
}