Greetings.

 

I've lost my #7 drive and before I go any further I want to get some eyeballs on it. I woke up the other morning with a parity check running which I found odd as there were no unclean shutdowns.  After the parity I then noticed that I was missing a decent amount of data (nearly full 6tb drive).

 

Diagnostics are attached.  

I recently upgraded from about a 3 year old version of Unraid, but I had zero issues for the past 2 weeks so I don't believe that is the culprit. This drive was in good health as far as I know and I had no other known issues. 

Thanks in advance. 

unraid-diagnostics-20201130-1923.zip

Since you rebooted nothing in syslog to indicate what might have happened.

 

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

Dealing with a drive showing as unmountable is covered here in the online documentation accessible via the ‘Manual’ link at the bottom of the Unraid GUI.

Thanks for the support. I'm not sure why I couldn't find the documentation in my searches. 

I ended up having to use the -L command to repair but it worked like a champ. Back online and in good health. 

 

 

Opening this back up. I've been experiencing an ongoing random drop of drive #7. I was able to run the diagnostic download before restart this time. 

 

I am able to remount the drive following the Check Filesystem restore process, however this will only last for a random amount of time before Drive #7 data disappears and parity check runs. The strange thing is that the drive will still appear to be mounted until I stop the array. It's only then that it recognizes that #7 is unmounted. 

 

Any documents out there that can help me troubleshoot this one? 

 

 

unraid-diagnostics-20201220-0343.zip

Looks more like a connection problem, replace/swap both cables on disk7.

So I've replaced my cable on Drive 7 and it's lead to a series of weird ailments. Drive 7 essentially became unmountable after the cable replacement (XFS rebuild was doing nothing) and then drive 6 started acting weird too during a parity check that auto triggered. 

 

I thought maybe the drive itself was bad even though it was passing SMART tests. I have a couple spares on hand so I replaced it with a WD8tb white I had ready to go. During the disc rebuilding to #7, drive #8 became unmountable. SIGH. 

 

Drive #7 finished the rebuild and then I was able to XFS repair drive #8 and mount it. Now I am showing 1170 errors on disc 7 and 170 on disc 8. I attempted to run a party with write corrections but it was running brutally slow. It was estimating 200 days for completion. 

 

Both discs pass a smart test and the #7 is now brand new. I'm leaning towards a hardware/software compatibility issue with the sata controller. I just recently upgraded from a 3+ year old version due to controller issues when I tried to upgrade back in the day. I've add the line of code for IOMMU to fix that but now it's looking maybe that was only a partial fix? I can't really see what else it could be at this point but I'm a green belt in all of this. My RAM was recently replaced and passed MEMtest. 

 

Where should I go from here? Diagnostics attached. 

 

Thanks in advance. 

unraid-diagnostics-20201227-1130.zip

Marvell controllers are not recommended, if possible it should be replaced, disk8 possibly has some real issues, you should run an extended SMART test.