@GIDDION Hello again. I am just about to write a technical manual wiki entry on device / serial management in Rockstor and want to reference it here so hang in there. And yes there is a suspected bug in serial management but I have yet to root it out but I have only seen it occur on nvme devices so far ie in the following forum thread:
In that no db entry for serial should be null and yet in the above thread it was found to be the case: hence suspected bug, but I would rather have more info before creating a targeted issue on this as it is still a little hazy.
Maybe we can route it out here if you are also affected and game.
I’ll get this wiki entry done first then circle back around to your serial issue. But as a quick note your lsblk readout does indicate all those 4 drives are not reporting their serial, try the udevadm commands in the above referenced forum thread except on your problem drives and see if the serial numbers are extracted correctly then (posting the full output of both here will also help), as if lsblk reports no serial Rockstor fails over to trying udevadm to retrieve them. Sorry need to read more on your issue as reported but also will need the wiki. Also note the contents of your rockstor.log (System - Logs Manager) when you press the Rescan button on the Disks page. Essentially Rockstor parses the lsblk output to know what drives are connected and manages them via their serial numbers which are required to be unique.
Hope that helps.
Back in a bit.
Edit: and screen grabs of the Disks page would be good. Thanks.