I have 3 x unRAID servers - all running unRAID Server Plus v5.05.

 

All have a valid parity drive, and no issues as far as I'm aware.

 

All have APCUPSD configured in network mode via the Utilities, with the following settings (connected to the UPS via its built-in network interface):

 

 

However, when I cut power to the UPS which serves them, after power falls below 95%, only two of them shut down. The third does not.

 

The only difference with the third is that I have drives mapped to it from the other two unRAID servers, which it then serves as a single, unified share, giving access to all my media files using the following settings in /config/go:

 

Are the mapped shares possibly the reason why APCUPSD can't shut down the server?

 

 

#!/bin/bash
# Start the Management Utility
/usr/local/sbin/emhttp &
#
#DISABLE DSF SHARES
sed -i -e "s/host msdfs = Yes/host msdfs = No/" -e "s/msdfs root = Yes/msdfs root = No/" /etc/samba/smb.conf
smbcontrol smbd reload-config
#
#CREATE FOLDER STRUCTURE TO MOUNT FOREIGN SHARES
mkdir  /mnt/Video
mkdir  /mnt/Video/Film
mkdir  /mnt/Video/TV
mkdir  /mnt/Video/Film/Comedy
mkdir  /mnt/Video/Film/Childrens
mkdir "/mnt/Video/Film/Crime & Thriller"
mkdir "/mnt/Video/Film/Documentary & Bio"
mkdir  /mnt/Video/Film/Drama
mkdir  /mnt/Video/Film/Horror
mkdir  /mnt/Video/Film/Musical
mkdir "/mnt/Video/Film/Period & Historical"
mkdir  /mnt/Video/Film/Romance
mkdir "/mnt/Video/Film/SciFi & Fantasy"
#
#CREATE LOCAL SYMLINKS
# - FROM UNRAID-01
ln -s /mnt/user/Film-Action          "/mnt/Video/Film/Action"
ln -s /mnt/user/Film-Anime           "/mnt/Video/Film/Anime"
ln -s /mnt/user/TV-Fiction           "/mnt/Video/TV/Fiction"
ln -s /mnt/user/TV-Factual           "/mnt/Video/TV/Factual"
ln -s /mnt/user/TV-Comedy            "/mnt/Video/TV/Comedy"
ln -s /mnt/user/Music                "/mnt/Video/Music"
#
#MAP FOREIGN SHARES
# - FROM UNRAID-02
mount -t cifs //192.168.1.126/Film-Comedy            -o guest   /mnt/Video/Film/Comedy
mount -t cifs //192.168.1.126/Film-CrimeThriller     -o guest  "/mnt/Video/Film/Crime & Thriller"
mount -t cifs //192.168.1.126/Film-DocumentaryBio    -o guest  "/mnt/Video/Film/Documentary & Bio"
# - FROM UNRAID-03
mount -t cifs //192.168.1.127/Film-Childrens         -o guest   /mnt/Video/Film/Childrens
mount -t cifs //192.168.1.127/Film-Drama             -o guest   /mnt/Video/Film/Drama
mount -t cifs //192.168.1.127/Film-Horror            -o guest   /mnt/Video/Film/Horror
mount -t cifs //192.168.1.127/Film-Musical           -o guest   /mnt/Video/Film/Musical
mount -t cifs //192.168.1.127/Film-PeriodHistorical  -o guest  "/mnt/Video/Film/Period & Historical"
mount -t cifs //192.168.1.127/Film-Romance           -o guest   /mnt/Video/Film/Romance
mount -t cifs //192.168.1.127/Film-SciFiFantasy      -o guest  "/mnt/Video/Film/SciFi & Fantasy"

How are you handling umount on shutdown?

I'm not sure I am!

 

When I run a manual shutdown I go through the following on the GUI:

 

 

 

Which shuts the server down fine. I don't need to unmount any shares or remotely mounted shares beforehand.

 

I haven't put any special share unmount provision in place.

 

 

I reverted the 'go' file back to its default, and now the server shuts down on power failure.

 

Can anyone tell me which file I need to edit to add some unmount statements to allow shutdown to complete successfully?

I reverted the 'go' file back to its default, and now the server shuts down on power failure.

 

Can anyone tell me which file I need to edit to add some unmount statements to allow shutdown to complete successfully?

there is a 'stop' file (that if present) gets executed as part of system shutdown.  However I am not sure if it meets your needs  - you may need to work out how to catch the shutdown array events and do the umounts via that route.