Monitor: add system timer to run --oneshot periodically

"mdadm --monitor --oneshot" can be used to get a warning
if there are any degraded arrays.  It can be helpful to get
this warning periodically while the condition persists.

This patch add a systemd service and timer which can
be enabled with
   systemctl enable mdmonitor-oneshot.service

and will then provide daily warnings.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

diff --git a/Makefile b/Makefile
index afb62cc6e3a6366386a69aebb20cb9c7a10d39cc..dfe00b0a0be807597cb979342c15867bd11c570f 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -279,6 +279,7 @@ install-systemd: systemd/mdmon@.service
                mdadm-last-resort@.service mdadm-grow-continue@.service \
                mdcheck_start.timer mdcheck_start.service \
                mdcheck_continue.timer mdcheck_continue.service \
+               mdmonitor-oneshot.timer mdmonitor-oneshot.service \
                ; \
        do sed -e 's,BINDIR,$(BINDIR),g' systemd/$$file > .install.tmp.2 && \
           $(ECHO) $(INSTALL) -D -m 644 systemd/$$file $(DESTDIR)$(SYSTEMD_DIR)/$$file ; \

diff --git a/systemd/mdmonitor-oneshot.service b/systemd/mdmonitor-oneshot.service
new file mode 100644 (file)
index 0000000..fd469b1
--- /dev/null
+++ b/systemd/mdmonitor-oneshot.service
@@ -0,0 +1,15 @@
+#  This file is part of mdadm.
+#
+#  mdadm is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Reminder for degraded MD arrays
+
+[Service]
+Environment=  MDADM_MONITOR_ARGS=--scan
+EnvironmentFile=-/run/sysconfig/mdadm
+ExecStartPre=-/usr/lib/mdadm/mdadm_env.sh
+ExecStart=BINDIR/mdadm --monitor --oneshot $MDADM_MONITOR_ARGS

diff --git a/systemd/mdmonitor-oneshot.timer b/systemd/mdmonitor-oneshot.timer
new file mode 100644 (file)
index 0000000..cb54bda
--- /dev/null
+++ b/systemd/mdmonitor-oneshot.timer
@@ -0,0 +1,15 @@
+#  This file is part of mdadm.
+#
+#  mdadm is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Reminder for degraded MD arrays
+
+[Timer]
+OnCalendar= 2:00:00
+
+[Install]
+WantedBy= mdmonitor.service