mdadm 3.4-1, error msg. on boot - no /usr/lib/systemd/scripts/mdadm_env.sh

Neil, All,

I'm chasing down the reason there is no /usr/lib/systemd/scripts/mdadm_env.sh
provided with mdadm. This is more a curiosity really as mdmonitor continues to run, but it always throws an error at boot:

Jun 05 17:12:47 valhalla systemd[454]: mdmonitor.service: Failed at step EXEC

spawning /usr/lib/systemd/scripts/mdadm_env.sh: No such file or directory

I have several Arch servers, all on mdadm 3.4-1. I ran into an issue a year or
so ago with a boot error with mdmonitor due to my failure to provide MAILADDR in /etc/mdadm.com, but that has long since been corrected:

# cat /etc/mdadm.conf
DEVICE partitions
ARRAY /dev/md0 metadata=1.2 name=archiso:0 UUID=1b67f2d4:4911f2c5:469f9dcf:315814ce
ARRAY /dev/md1 metadata=1.2 name=archiso:1 UUID=0542c5c9:3802b256:32e97884:a2e49f53
ARRAY /dev/md2 metadata=1.2 name=archiso:2 UUID=812e8f85:0c4efbef:a0c02f49:215df35e
ARRAY /dev/md3 metadata=1.2 name=archiso:3 UUID=80a3bf76:e6421b06:6edb2a88:741e8b6f
MAILADDR [email protected]
PROGRAM /usr/sbin/handle-mdadm-events

So following the rabbit trail further, I check and there is no
/usr/lib/systemd/scripts/mdadm_env.sh on my system and it is not provided as part of the mdadm package:

# pacman -Ql mdadm
mdadm /etc/mdadm.conf
mdadm /usr/bin/mdadm
mdadm /usr/bin/mdassemble
mdadm /usr/bin/mdmon
mdadm /usr/lib/initcpio/hooks/mdadm
mdadm /usr/lib/initcpio/install/mdadm
mdadm /usr/lib/initcpio/install/mdadm_udev
mdadm /usr/lib/systemd/system-shutdown/mdadm.shutdown
mdadm /usr/lib/systemd/system/[email protected]
mdadm /usr/lib/systemd/system/[email protected]
mdadm /usr/lib/systemd/system/[email protected]
mdadm /usr/lib/systemd/system/[email protected]
mdadm /usr/lib/systemd/system/mdmonitor.service
mdadm /usr/lib/udev/rules.d/63-md-raid-arrays.rules
mdadm /usr/lib/udev/rules.d/64-md-raid-assembly.rules
<snip man pages>

However, the mdmonitor.service file is certainly looking for one:

# cat /usr/lib/systemd/system/mdmonitor.service

# 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=MD array monitor
DefaultDependencies=no

[Service]
Environment= MDADM_MONITOR_ARGS=--scan EnvironmentFile=-/run/sysconfig/mdadm ExecStartPre=-/usr/lib/systemd/scripts/mdadm_env.sh ExecStart=/sbin/mdadm --monitor $MDADM_MONITOR_ARGS

Further, there isn't even a /run/sysconfig directory on Arch (which looks more
SuSE'esque). Checking the status, mdmonitor is happily running and doing it's job:

# sc status mdmonitor
● mdmonitor.service - MD array monitor
   Loaded: loaded (/usr/lib/systemd/system/mdmonitor.service; static; vendor
preset: disabled)
   Active: active (running) since Fri 2016-05-27 08:32:26 CDT; 1 weeks 2 days ago
  Process: 353 ExecStartPre=/usr/lib/systemd/scripts/mdadm_env.sh (code=exited,
status=203/EXEC)
 Main PID: 378 (mdadm)
    Tasks: 1 (limit: 512)
   CGroup: /system.slice/mdmonitor.service
           └─378 /sbin/mdadm --monitor --scan

May 27 08:32:26 valkyrie systemd[1]: Starting MD array monitor...
May 27 08:32:26 valkyrie systemd[1]: Started MD array monitor.

So the issue here is "is this a missing file from the Arch packaging of
mdadm?", "or is there just an oversight in the service file?" I apoligize if this has been asked before, searching, I don't find anything directly. So is this an Arch issue or a mdadm issue?

I know it's not a big issue, but I'd like to clean up the boot message
properly. What say the devs?

David C. Rankin, J.D.,P.E.
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If you're running Arch Linux, you probably want to direct this question to the Arch Linux maintainers.

Jes

Thank you Jes,

I've posed the problem back to the Arch devs.

David C. Rankin, J.D.,P.E.