[SOLVED] "Update Library"....not working after in-place update to 8.3.7

[Nutul]

Thought that I'd re-awaken this thread....I'd originally marked it as SOLVED.....but problems now persist 100% of the time!!

To recap....using RPi4/Moode 8.3.7 to play 'local' files.....so the simplest of scenarios I believe.

• Files are on 3 attached USB drives (2 x USB3.0, and 1 x USB2.0)
  
• In Folder view....I can see all 3 drives, and can navigate to all albums/tracks
  
• In Album view......nothings can be seen in 'All Music'.....but 'Recently Added' CAN be viewed/accessed for playing.
  
• Update Library does not work at all, and the oinly way I can add new files is to ReGenerate said Library
  

Startup logs don't show any errors....well not any that I can spot.

Is there a logical limit to the size of the Library I'm wondering??

More likely perhaps.....is the problem due to a Power (as in 'lack of') thing??
Have to add.....that for a short while.....library was successfully updating with the 3 drives attached!

It could be a power-related issue.
Sometimes (I have no clue, nor history / track for it) after a library-update succeeds, another one shortly after fails giving the "Library update in progress" you were experiencing.
Now, if I am doing the library update from my PC (as I 99% of the times do) at this point I just hit F5 (or ctrl-F5) and restart the update: it works
On the Pi itself there is no F5, but you can enter "m" => "System", or "Library", and then just gor BACK, this clears the UI and the "wrong" update-undergoing flag.

If, OTOH, you are never ever able to do an update, but only the regenerate works (and I underline WORKS) I really do not have a clue... may the way moOde detects changes in the library, in case of multi-hdd end after the first is checked?

Can you confirm, for instance, that making a small change to the discs (one by one, that is disc-a => update library, disc-b => update- library, etc.) can sometimes succeed? Always on the same disc?

Looking at their mount points, can you eventually confirm that the disc always working is, for instance, /dev/sdb1?

I made a lot of assumptions here, and probably said a lot of nonsense too; nevertheless it's a thing worth investigating; unless someone has already the answer by experience.

Just my 2c (or 20c, that is)