Server Version#: 1.32.7.7621 (Ubuntu 20.04)
Due to some NAS shuffling and rebuilding of pools, I have had to change paths to libraries a couple of times on one of my Plex servers.
Each time I do, I either:
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Rescan library files after, and then check for trash to make sure nothing is getting flagged as missing (I have auto trash emptying disabled).
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Do nothing, but then, the next time I add content to a library, I scan library files for new content.
In both cases above, this results in Plex scanning all the files in the library (as intended) but then doing chapter thumbnail generation, credits detection, and some other things. All of these files have already had this done, so I have no idea why it is redoing these tasks when the files themselves haven’t changed (I do MD5 checksums of all my video files when I copy them to a new storage pool).
I would get if this was just the designed behavior of redoing everything, but the video preview thumbnail generation does an MD5 checksum on the file and does not rerun on the old files each time, so I am just not sure why that same logic isn’t applied to some of these other scan tasks?
I am going to have to change paths on this server in the next day or 2 after the checksums get done running on a newly created storage pool, so I can get more specifics on what is running over again that shouldn’t need to. Was just checking first to see if there is some documentation on what it repeats each time, and if there is a way to stop it, as it seems like a waste of read load on the hard drives, CPU resources, and writes to the SSD where the metadata is stored.
I get that I can just not scan the libraries, but that’s just delaying it until the next time I add content, and the same thing will occur.
