Thanks for the status update @Vince_Deters, we’ll bring your case to our development team for further review. We should have more information to share before the end of the week! 
Ok, after the last reboot it has now added everything back and my library is good. Also, the Library → Library Maintenance → Clean up library top check box now shows a reasonable number of deleted files (that I probably explicitly deleted myself). This is all with IPv6 re-enabled and my ethernet switch re-introduced into the server’s network path, so neither one of those had any effect.
The root cause is still a mystery to me so I would appreciate any further feedback.
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Hi @Vince_Deters,
We’re glad Roon is working for you again. We’re still waiting for feedback from the development team about the ticket we made for this case. Once we hear from them we might be able to give you an answer about the root cause of the issue.
I’m part of the Roon dev team, and I wanted to explain our best understanding of the cause of the problem here:
- until build 1462, Roon had a bug which could cause it to believe that a Qobuz account had 0 tracks and albums on it.
- most of the time Roon does only an incremental sync with Qobuz to determine what tracks and albums are in your favorites: we send them a timestamp, and they send us a list of all the changes since that timestamp.
- every 72 hours or so we do a full, non-incremental sync with Qobuz.
so, my belief is that sometime before we released build 1462 the bug caused Roon to believe you had 0 Qobuz favorites. The incremental sync didn’t fix the problem, and until build 1462 the 72 hour full sync didn’t resolve the problem because the bug triggered again afterwards.
Then you upgraded to build 1462 the bug was no longer present, but Roon still thought you had very few Qobuz albums/tracks, because the incremental sync couldn’t fix that sort of problem. Eventually we finally did a non-incremental sync and everything re-appeared.
I don’t really understand why the IPv6 change appeared to do anything, and also don’t know why the every 72 hour full sync took so long to resolve the problem, but at this point it’s not a high enough priority for me to investigate more instead of a different bug.
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Hey Ben, thanks for the explanation, the interaction of the bug with the incremental/full syncing makes sense. I guess I wasn’t clear about the IPv6, I don’t believe it did anything either.
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What’s happening?
· Something else
How can we help?
· None of the above
Other options
· Other
Describe the issue
tracks disappearing
Describe your network setup
fiber -> eero mesh -> ethernet switch -> roon server running on Mac mini
More details: on my home page I started seeing tracks disappearing on batches of 50, about 1 batch per second. This started about 30 minutes ago and continued until it stabilized about 5 minutes ago. I had about 740k tracks and it’s now sitting at 333523. At the same time the number tracks shown in Library->Library maintenance->Clean up library was ramping up at about the same rate. My library is a mix of local files + Qobuz + Tidal. My local drive is fine and a spot check of some local albums seems good. So I’m guessing Roon was removing tons of Qobuz and/or Tidal tracks for some reason.
Possibly your Qobuz account has been compromised? It’s happened to a lot of people recently….
Don’t think so. If I go to Home/Qobuz/My Qobuz, my favorite albums list is huge, as it should be. But my Roon albums view with a focus on Storage Locations/Qobuz Library shows only 47 albums. What’s the cause of that inconsistency?
This looks very much like an issue I reported earlier (ref #H34N2K). The explanation was a bug that caused Roon to believe I have 0 Qobuz favorites, which could not be fixed by the regular incremental sync. Then a full sync that happens at a 72-hour interval fixed things back up. But that was supposedly fixed in build 1462, and I’m running build 1470.
Paging @ben
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Hi @Vince_Deters,
Thank you for the report. This investigation remains open with development; please allow us a chance to sync internally and we’ll respond as soon as we have a more fruitful update to share.
This morning Roon has slowly started adding tracks back. The number of tracks shown on the homepage is incrementing while the number shown by Library->Library maintenance->Clean up library is decrementing. I guess a full sync is in effect.
What’s happening?
· Other
Describe the issue
My new roon server on Mac mini M4 has deleted its library after a successful restore from a ROCK backup.
After more than 24 hours uptime I disabled the local storage locations, which seemed necessary to prevent the server from trying to synchronise Local files that were inaccessible. Soon after this, I noticed that Roon appeared to be gradually deleting my entire Qobuz library Album by Album, until it reached zero artists, zero albums, and presented as a fresh empty library.
I will be happy to provide screenshots and logs so that you can diagnose the cause.
Describe your network setup
Asus rt-ac86u
What’s happening?
· Other
Describe the issue
My new roon server on Mac mini M4 has deleted its library after a successful restore from a ROCK backup.
After more than 24 hours uptime I disabled the local storage locations, which seemed necessary to prevent the server from trying to synchronise Local files that were inaccessible. Soon after this, I noticed that Roon appeared to be gradually deleting my entire Qobuz library Album by Album, until it reached zero artists, zero albums, and presented as a fresh empty library.
I will be happy to provide screenshots and logs so that you can diagnose the cause.
Describe your network setup
Asus rt-ac86u
Feels very similar to an issue from long ago which @dylan helped me resolve. I wonder if it has to do with new server hammering Qobuz with requests?
Here are some grabs:
Your old problem was a Qobuz bug at the time, it’s very likely unrelated.
However, there was recently an issue where this could happen. This was fixed in the latest update. Is your Roon up to date?
Hi @Suedkiez , yes it is.
Latest version of Roon Server from main site: now reinstalled on latest MacOs- which was updated after this issue.
I am seeing some very strange behaviour again now, after 5th time lucky with restoring from my latest backup of former ROCK server. I’m watching on Roon Remote and it looks like this:
- Albums count static at 5712
- ‘Adding music to library’ process is running, now counting upwards from approx 50k tracks / 16k Identified… watched thru to 67k tracks / 25k identified.
- Artists count started around 3100, but seems to be ‘arguing with itself’ and counting upwards and downwards… currently standing at 3021
- Albums count is still static at 5712
Checking Storage in settings, it is evident that my local libraries are not accessible- and so I deduce that this is Roon debating its library with Qobuz.
I have not disabled the Folder paths under Storage-
this seemed to match ‘last known good’ before the issue occurred last time.
Will see in the morning, and try to remap the Storage folders if the counts are what I’d expect from Qobuz only.