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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>
This commit is contained in:
NeilBrown 2018-12-05 16:35:00 +11:00 committed by Jes Sorensen
parent 4199d3c629
commit 7cd7e91ab3
3 changed files with 31 additions and 0 deletions
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1
Makefile
View File

@ -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 ; \

15
systemd/mdmonitor-oneshot.service Normal file
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@ -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

15
systemd/mdmonitor-oneshot.timer Normal file
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@ -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