We are in the midst of a heatwave here and when the temp got to 110 in the garage the NAS (one, but only one, of the sources of music for Roon) was shutdown.
Roon correctly noted that the NAS was offline, and that the other, indoors and relatively cool, was still online.
Early this morning I started the garage server again. Added a few files that had been ripped / purchased in the meantime. I noticed that Roon has started - as if from scratch - ‘Adding Music To Library’ and appears to be doing it for all tracks. The pathnames and sources have not changed, the machine just appeared back online. This seems very odd.
To add insult to injury, about every 20 minutes or so the queue I have built and am playing is abruptly thrown away, and when I check Roon tells me there is ‘Nothing Queued’. There was!