Here's what's happened so far. I bought a couple WD Red 4TB disks on a black Friday deal to preemptively replace a couple of the aging 2TB disks I have in my array.

-Wed. I did a parity check on my system which came up with 0 errors.

-I replaced disk 1 (2TB disk) with one of the new 4TB disks that had been successfully precleared

-after unRaid rebuilt the disk, the array was fine.

-I ran another parity check that night and the next day disk 6 showed several hundred thousand errors.

-Since I had another 4TB disk, I decided just to replace disk 6 and rebuild again.

-Today after the rebuild finished, disk 7 now shows 128 errors, and my main shares are all EMPTY. 

 

If I view the contents of each disk individually I can see my files, but the main shares (ie: Movies) show 0 folders and 0 files

 

In addition, now "Fix Common Problems" shows disk 1 and disk 6 (the 2 new 4TB disks) have a warning:

"Unable to write to disk 1"  "suggested fix: Drive mounted read-only or completely full"

 

 

 

Man! what did I screw up. My unRaid has been working flawlessly for a long time now and all of a sudden everything is exploding.

 

Any insight on how I can right this would be appreciated. Thanks!!!

 

My diagnostics:

mediaserver-diagnostics-20181130-2257.zip

It would be good to see the diagnostics from when the errors happened, but for the current problem, check filesystem on disk6:

https://wiki.unraid.net/Check_Disk_Filesystems#Checking_and_fixing_drives_in_the_webGui

or

https://wiki.unraid.net/Check_Disk_Filesystems#Drives_formatted_with_ReiserFS_using_unRAID_v5_or_later

I ended up putting back the original disk 6 (2TB disk) and did a New Configuration.

 

Everything is back properly.

Thanks for the advice.