[PATCH] Don't try to update crashkernel when bootloader is not installed

[Coiby Xu]

Currently when using anaconda to install the OS, the following errors
occur,

    INF packaging: Configuring (running scriptlet for): kernel-core-5.14.0-70.el9.x86_64
...
    INF dnf.rpm: grep: /boot/grub2/grubenv: No such file or directory
    grep: /boot/grub2/grubenv: No such file or directory
    grep: /boot/grub2/grubenv: No such file or directory
    grep: /boot/grub2/grubenv: No such file or directory
    ...
    INF packaging: Configuring (running scriptlet for): kexec-tools-2.0.23-9.el9.x86_64
...
    INF dnf.rpm: grep: /boot/grub2/grubenv: No such file or directory
    grep: /boot/grub2/grubenv: No such file or directory
    grep: /boot/grub2/grubenv: No such file or directory

Or for s390, the following errors occur,

    INF packaging: Configuring (running scriptlet for): kernel-core-5.14.0-71.el9.s390x
...
    03:37:51,232 INF dnf.rpm: grep: /etc/zipl.conf: No such file or directory
    grep: /etc/zipl.conf: No such file or directory
    grep: /etc/zipl.conf: No such file or directory

    INF packaging: Configuring (running scriptlet for): kexec-tools-2.0.23-9_1.el9_0.s390x
...
    INF dnf.rpm: grep: /etc/zipl.conf: No such file or directory

This is because when anaconda installs the packages, bootloader hasn't
been installed and /boot/grub2/grubenv or /etc/zipl.conf doesn't exist.
So don't try to update crashkernel when bootloader isn't read to avoid
the above errors.

Note this is the second attempt to fix this issue. Previously a file
/tmp/kexec_tools_package_install was created to avoid running the
related code thus to avoid the above errors but unfortunately that
approach has two issues a) somehow osbuild doesn't delete it for RHEL b)
this file could still exist if users manually remove kexec-tools.

Reported-by: Jan Stodola <jstodola(a)redhat.com&gt;
Signed-off-by: Coiby Xu <coxu(a)redhat.com&gt;
---
 kdumpctl         | 17 ++++++++---------
 kexec-tools.spec |  5 -----
 2 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/kdumpctl b/kdumpctl
index 3cad3dd0..361bf51a 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -1611,10 +1611,13 @@ reset_crashkernel()
 	fi
 }
 
-# to tell if it's package install other than upgrade
-_is_package_install()
+_is_bootloader_installed()
 {
-	[[ -f /tmp/kexec_tools_package_install ]]
+	if [[ $(uname -r) == s390x ]]; then
+		test -f /etc/zipl.conf
+	else
+		test -f /boot/grub2/grub.cfg
+	fi
 }
 
 # update the crashkernel value in GRUB_ETC_DEFAULT if necessary
@@ -1626,10 +1629,6 @@ update_crashkernel_in_grub_etc_default_after_update()
 	local _crashkernel _fadump_val
 	local _dump_mode _old_default_crashkernel _new_default_crashkernel
 
-	if _is_package_install; then
-		return
-	fi
-
 	if [[ $(uname -m) == s390x ]]; then
 		return
 	fi
@@ -1659,7 +1658,7 @@ reset_crashkernel_after_update()
 	local _kernel _crashkernel _dump_mode _fadump_val _old_default_crashkernel
_new_default_crashkernel
 	declare -A _crashkernel_vals
 
-	if _is_package_install; then
+	if ! _is_bootloader_installed; then
 		return
 	fi
 
@@ -1715,7 +1714,7 @@ reset_crashkernel_for_installed_kernel()
 
 	# During package install, only try to reset crashkernel for osbuild
 	# thus to avoid calling grubby when installing os via anaconda
-	if _is_package_install && ! _is_osbuild; then
+	if ! _is_bootloader_installed && ! _is_osbuild; then
 		return
 	fi
 
diff --git a/kexec-tools.spec b/kexec-tools.spec
index 24fad768..1ee17707 100644
--- a/kexec-tools.spec
+++ b/kexec-tools.spec
@@ -268,11 +268,6 @@ if [ ! -f /run/ostree-booted ] && [ $1 == 2 ] && grep
-q get-default-crashkernel
   kdumpctl get-default-crashkernel fadump > /tmp/old_default_crashkernel_fadump
2>/dev/null
 %endif
 fi
-# indicate it's package install so kdumpctl later will only reset crashkernel
-# value for osbuild.
-if [ $1 == 1 ]; then
-  touch /tmp/kexec_tools_package_install
-fi
 # don't block package update
 :
 
-- 
2.38.1