kdump/ppc64: rebuild initramfs image after migration

upstream: fedora
resolves: bz2027568
conflict: The upstream patch was submitted before
          "Add file supported-kdump-targets.txt to kexec-tools"
          was added to rhel9. So there are SourceXX conflict
          in spec file. And similar code merge with patch
          "add keyutils as a weak dependency for POWER"

commit 71b7a2f47c
Author: Hari Bathini <hbathini@linux.ibm.com>
Date:   Mon Jul 12 15:33:03 2021 +0530

    kdump/ppc64: rebuild initramfs image after migration

    Dump capture initramfs needs rebuild after partition migration (LPM).
    Use servicelog notification mechanism to invoke kdump rebuild after
    migration.

    Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
    Reviewed-by: Pingfan Liu <piliu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>

kdump-migrate-action.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+systemctl is-active kdump
+if [ $? -ne 0 ]; then
+        exit 0
+fi
+
+/usr/lib/kdump/kdump-restart.sh

kdump-restart.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+export PATH="$PATH:/usr/bin:/usr/sbin"
+
+exec >>/var/log/kdump-migration.log 2>&1
+
+echo "kdump: Partition Migration detected. Rebuilding initramfs image to reload."
+/usr/bin/kdumpctl rebuild
+/usr/bin/kdumpctl reload

kexec-tools.spec

@@ -42,7 +42,9 @@ Source31: kdump-logger.sh
 Source32: mkfadumprd
 Source33: 92-crashkernel.install
 Source34: crashkernel-howto.txt
-Source35: supported-kdump-targets.txt
+Source35: kdump-migrate-action.sh
+Source36: kdump-restart.sh
+Source37: supported-kdump-targets.txt
 
 #######################################
 # These are sources for mkdumpramfs
@@ -57,15 +59,16 @@ Source107: dracut-kdump-emergency.target
 Source108: dracut-early-kdump.sh
 Source109: dracut-early-kdump-module-setup.sh
 
-%ifarch ppc64 ppc64le
-Recommends: keyutils
-%endif
 Source200: dracut-fadump-init-fadump.sh
 Source201: dracut-fadump-module-setup.sh
 
 Requires(post): systemd-units
 Requires(preun): systemd-units
 Requires(postun): systemd-units
+%ifarch ppc64 ppc64le
+Requires(post): servicelog
+Recommends: keyutils
+%endif
 Requires(pre): coreutils sed zlib
 Requires: dracut >= 050
 Requires: dracut-network >= 050
@@ -151,7 +154,7 @@ cp %{SOURCE21} .
 cp %{SOURCE26} .
 cp %{SOURCE27} .
 cp %{SOURCE34} .
-cp %{SOURCE35} .
+cp %{SOURCE37} .
 
 make
 %ifarch %{ix86} x86_64 ppc64 s390x ppc64le aarch64
@@ -198,6 +201,10 @@ install -m 644 %{SOURCE25} $RPM_BUILD_ROOT%{_mandir}/man8/kdumpctl.8
 install -m 755 %{SOURCE20} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-lib.sh
 install -m 755 %{SOURCE23} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-lib-initramfs.sh
 install -m 755 %{SOURCE31} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-logger.sh
+%ifarch ppc64 ppc64le
+install -m 755 %{SOURCE35} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-migrate-action.sh
+install -m 755 %{SOURCE36} $RPM_BUILD_ROOT%{_prefix}/lib/kdump/kdump-restart.sh
+%endif
 %ifnarch s390x
 install -m 755 %{SOURCE28} $RPM_BUILD_ROOT%{_udevrulesdir}/../kdump-udev-throttler
 %endif
@@ -263,6 +270,13 @@ mv $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/* $RPM_BUILD_ROOT/%{d
 %systemd_post kdump.service
 
 touch /etc/kdump.conf
+
+ARCH=`uname -m`
+if [ "$ARCH" == "ppc64" ] || [ "$ARCH" == "ppc64le" ]
+then
+	servicelog_notify --add --command=/usr/lib/kdump/kdump-migrate-action.sh --match='refcode="#MIGRATE" and serviceable=0' --type=EVENT --method=pairs_stdin
+fi
+
 # This portion of the script is temporary.  Its only here
 # to fix up broken boxes that require special settings 
 # in /etc/sysconfig/kdump.  It will be removed when