[PATCH v5 2/2] Introduce kdump capture service

This patch introduce a new kdump-capture.service which is used to run kdump.sh. kdump-capture.service has OnFailure=emergency.target and OnFailureIsolate=yes set. When kdump.sh fails, the kdump emergency service will be triggered and enter the error handling path. In 2nd kernel, the default target for systemd is initrd.target, so we put kdump-capture.service in initrd.target.wants/ and by that, system will start kdump-capture as part of the boot process. kdump.sh used to run in dracut-pre-pivot hook. Now kdump-capture.service is placed after dracut-pre-pivot.service and other dependencies are all copied from dracut-pre-pivot.service. So the start point of kdump.sh will be almost the same as it used to be. Signed-off-by: WANG Chao <chaowang(a)redhat.com&gt; --- dracut-kdump-capture.service | 30 ++++++++++++++++++++++++++++++ dracut-kdump.sh | 5 ++--- dracut-module-setup.sh | 4 +++- kexec-tools.spec | 2 ++ 4 files changed, 37 insertions(+), 4 deletions(-) create mode 100644 dracut-kdump-capture.service diff --git a/dracut-kdump-capture.service b/dracut-kdump-capture.service new file mode 100644 index 0000000..57139c9 --- /dev/null +++ b/dracut-kdump-capture.service @@ -0,0 +1,30 @@ +# This file is part of systemd. +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. + +[Unit] +Description=Kdump Vmcore Save Service +After=initrd.target initrd-parse-etc.service sysroot.mount +After=dracut-initqueue.service dracut-pre-mount.service dracut-mount.service dracut-pre-pivot.service +Before=initrd-cleanup.service +ConditionPathExists=/etc/initrd-release +OnFailure=emergency.target +OnFailureIsolate=yes + +[Service] +Environment=DRACUT_SYSTEMD=1 +Environment=NEWROOT=/sysroot +Type=oneshot +ExecStart=/bin/kdump.sh +StandardInput=null +StandardOutput=syslog +StandardError=syslog+console +KillMode=process +RemainAfterExit=yes + +# Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash +# terminates cleanly. +KillSignal=SIGHUP diff --git a/dracut-kdump.sh b/dracut-kdump.sh index 83c1e96..600e84e 100755 --- a/dracut-kdump.sh +++ b/dracut-kdump.sh @@ -179,8 +179,7 @@ fi get_host_ip if [ $? -ne 0 ]; then echo "kdump: get_host_ip exited with non-zero status!" - do_default_action - do_final_action + exit 1 fi if [ -z "$DUMP_INSTRUCTION" ]; then @@ -202,7 +201,7 @@ if [ $? -ne 0 ]; then fi if [ $DUMP_RETVAL -ne 0 ]; then - do_default_action + exit 1 fi do_final_action diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index b9a7000..fe51a02 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -577,9 +577,11 @@ install() { inst "/bin/cut" "/bin/cut" inst "/sbin/makedumpfile" "/sbin/makedumpfile" inst "/sbin/vmcore-dmesg" "/sbin/vmcore-dmesg" - inst_hook pre-pivot 9999 "$moddir/kdump.sh" inst "/lib/kdump/kdump-lib.sh" "/lib/kdump-lib.sh" inst "/lib/kdump/kdump-lib-initramfs.sh" "/lib/kdump-lib-initramfs.sh" + inst "$moddir/kdump.sh" "/usr/bin/kdump.sh" + inst "$moddir/kdump-capture.service" "$systemdsystemunitdir/kdump-capture.service" + ln_r "$systemdsystemunitdir/kdump-capture.service" "$systemdsystemunitdir/initrd.target.wants/kdump-capture.service" inst "$moddir/kdump-error-handler.sh" "/usr/bin/kdump-error-handler.sh" # Replace existing emergency service cp "$moddir/kdump-emergency.service" "$initdir/$systemdsystemunitdir/emergency.service" diff --git a/kexec-tools.spec b/kexec-tools.spec index 91deade..1d94e3d 100644 --- a/kexec-tools.spec +++ b/kexec-tools.spec @@ -38,6 +38,7 @@ Source101: dracut-module-setup.sh Source102: dracut-monitor_dd_progress Source103: dracut-kdump-error-handler.sh Source104: dracut-kdump-emergency.service +Source105: dracut-kdump-capture.service Requires(post): systemd-units Requires(preun): systemd-units @@ -214,6 +215,7 @@ cp %{SOURCE101} $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpb cp %{SOURCE102} $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE102}} cp %{SOURCE103} $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE103}} cp %{SOURCE104} $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE104}} +cp %{SOURCE105} $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE105}} chmod 755 $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE100}} chmod 755 $RPM_BUILD_ROOT/etc/kdump-adv-conf/kdump_dracut_modules/99kdumpbase/%{remove_dracut_prefix %{SOURCE101}} -- 1.9.3