Thanks, you're the best!
Should I be installing from backports like so:
or just use the command from technodad's video?
Also, I had assumed that selecting 'Enable Backports' in the OMV Extras GUI would add 'stretch-backports main' to my sources list, but apparently not. What does it do? Install a backport kernel?
I ended up switching my drive pool to BTRFS (not because of this), but if I were still using MergerFS I think I'd do as gderf suggests and edit fstab.
I should mention there are 4 shared folders from the pool and they all fail to mount. How would I test to see if i.e. /sharedfolders/Media is missing? Should I unmount the mergerfs pool (in this case called 'Primary') and check to see that /sharedfolders has all the same directories in it?
Edit: There are 4 directories in /sharedfolders corresponding to the 4 shared folders from the pool right after restarting the system, and they are empty.
After a reboot OMV4 fails to mount the directories from my mergerfs pool into the /sharedfolders directory. The directories from my regular, non-pooled disk mount there fine. If I create a shared folder from the web UI after boot everything gets mounted as it should. My theory is that it's because FUSE is mounted after the sharedfolders-.mount scripts run, but I'm pretty new to all this. Here are what I think are relevant log snippets, in chronological order. These are during startup:
This is the MergerFS pool being mounted:
This is a folder from that pool failing to mount slightly later:
Here is FUSE mounting a bit later still:
I've searched the forum a lot but I haven't found a fix. Thanks for any help!
I'm using the latest OMV4 on an ASUS P55 motherboard.