This has happened twice now in the last few days where all of a sudden unraid would start complaining that the flash drive is unreadable.  The online GUI just showed "starting services" but all my docks and VMs were still online and working.  If I reboot the server, it boots back up but with a default config and a server name f "tower".  First time, I took the stick out and put it on my Mac and ran a first aid on it which found no issues.  I put it back in unraid and booted up, no issues.  Second time, I decided to just reimage the stick after pulling off the config folder.  My mac didn't have any issues reading or writing to the drive.  I'm currently running 6.6.0 but about to update to 6.6.1 once I can boot successfully again.

 

I'm attaching my logs and diagnostics if someone might have any insights.  I don't think it's a bad stick because I can pop it into my Mac and all the contents are visible and first aid finds nothing wrong.

nicknas2-diagnostics-20180928-2005.zip

nicknas2-syslog-20180928-2004.zip

The flash drive dropped offline, and then reconnected.  Try another port.  Ideally USB2

3 minutes ago, Squid said:

The flash drive dropped offline, and then reconnected.  Try another port.  Ideally USB2

Motherboard has two USB controllers. One with a bunch of ports and one with a single USA A and USB C 3.1 gen 2. I pass through the one controller to a Windows 10 VM so I’m left with just the two ports for unraid. The stick is a 32 GB Samsung plugged directly into the USB A port. Haven’t had an issue since I built the machine last December.  Any idea why the stick would just randomly disconnect?

Just to close the loop on this topic, I think it was the flash drive going bad.  It started getting more frequent, twice in one night I had to reboot.  Ended up switching my license to a brand new USB stick I had still in the packaging and haven't had an issue since.  Exchanging the other one out under warranty.  Never seen a flash drive do that before, so weird.