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

[Tonewheelkev]

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)

Thanks for this......I've clearly got a lot to think about here ... much of which is beyond me at the moment!
My 'method' has been....to transfer material from PC to SSD drive(s)....then plug those drives into the Pi, and attempt update in Moode. Now that update is failing....Regenerating library is only way to add new files. Yes, that appears to work OK!....as I can find everything in Folder view. Album view is totally blank.....but recently added albums DO appear.

Not clear on the following..."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."
....is this done in a Putty/SSh window?