More > JRiver Media Center 26 for Mac
Do databases work across OS?
YankeeInLondon:
So I've now started up the MC app while the NAS is currently down. I'm happy to see that my configuration looks pretty good (from what I've taken away from this conversation) but modal windows continue to pop up in succession that look that attached, all saying:
--- Quote ---Media Center encountered errors while tagging or moving files. Check that the files exist, are not read-only, and are not in use by other porgrams.
--- End quote ---
My guess is that this is because it's been trying for a very long time to write meta-data back to the NAS but was either failing silently or was in a wait mode and being asynchronously queued. I attached a graphic I got from Synology soon before it decided I shouldn't be able to log in anymore.
HaWi:
--- Quote from: YankeeInLondon on June 13, 2020, 05:45:39 pm ---I have 4 physical discs running on RAID-6 (all operating under a single logical volume)
--- End quote ---
Ah, sorry, I misunderstood single drive for single volume. With 4 equally sized drives in RAID6, I believe, you have two drive redundancy and the actual capacity of your array is half the capacity of the sum of all four drives together. I might be wrong, the Synology Support site has a capacity calculator for the different versions of RAID. I have SHR1/RAID5 which is single drive redundancy and my RAID capacity is 75% of the sum of my drives' capacity.
wer:
--- Quote from: HaWi on June 13, 2020, 11:22:37 pm ---With 4 equally sized drives in RAID6, I believe, you have two drive redundancy and the actual capacity of your array is half the capacity of the sum of all four drives together. I might be wrong
--- End quote ---
That is correct. RAID-6 has parity redundancy (double parity blocks).
blgentry:
Thoughts:
Sounds like your NAS isn't healthy and happy right now. Getting it fixed first is a good step, regardless whether it's the root of the problem or not. I suspect it has something to do with it. MacOS doesn't handle "spun down" drives very well. I have several physical external drives connected to my iMac. Any time one of my apps does a "drive inventory" operation... like when you open a Save dialog for example... my Mac does the "Spinning beach ball" until every single drive is spun up and working. This is rather annoying; it can take 45-ish seconds.
If you have your NAS persistently mounted, there might be something similar going on as MC (and other programs) try to access the disk.
Regarding thumbnails versus Cover Art:
Thumbnails are indeed stored WITH THE DATABASE. That's the thumbnail cache that's used to display your thumbnails in the MC interface. Now, the Cover Art (full sized) which is used to create those thumbnails... that has a variable location as our man wer has said. As long as your Library (database) is stored on your SSD, you should be fine from a thumbnails perspective.
However, as was already discussed, the "update tags when file changes" setting is what controls whether or not MC writes back to your Media files.
tools > Options > General > Importing & Tagging > Update tags when file info changes
If that option is checked (which it is by default) MC will write all tag changes to your files. This includes play count, last played date, etc. So MC may be writing to your files on every play. This isn't necessarily any kind of problem. But it might make MC act weird if your files are not writeable. For the record I have this setting ON on my copies of MC and always have.
Auto Import is mostly a good feature. But it has unusual behaviors in unusual situations. For that reason I have auto import turned off and run it manually by pressing the button that I put into the top toolbar for this purpose.
Good luck with your NAS and MC.
Brian.
HaWi:
To avoid the delay of spinning up the drives I have set my Synology to NOT hibernate idle drives (as recommended by the Synology Community). The argument is that stopping and starting drives leads to more wear and tear than spinning them continuously, even when idle.
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