Read errors on a disk, but passes SMART

[dvaldez]

Hey,

I have 'read errors' on one of my disks again, but it passes SMART check.

I've read that sometimes this is just a 'cable issue' or something.

I plan on moving into new server hardware ASAP (I have it all ready)

 

Should I try and resolve this read error and get all of the disks green again or should I move the disks into the new hardware and do a 'new config' or a rebuild?

 

If I should resolve the issue first, what is the recommended course of action?  Last time I had this issue another one of my disks became unreadable, then unrecognized so maybe I did not proceed correctly.

 

Thanks

 

Diagnostic file is attached

mainstore-diagnostics-20190831-2011.zip

[wayner]

I don't have a solution but I posted about the exact same issue at the exact same time.  Keep an eye on my thread and I will keep an eye on yours in case someone only responds to one of the threads.

[BRiT]

Your SMART reports has one of the files named as if the disk was disabled. From what I know, only Write errors will cause a disk to be disabled. The filename is: 

WDC_WD40EFRX-68N32N0_WD-WCC7K2YZHFFE-20190831-2011 disk1 (sdd) - DISK_DSBL.txt

[dvaldez]

The sequence of events from my perspective (what I saw, I may have missed something):

 

1. I get an email alert from my Unraid:

Quote

Event: Unraid array errors
Subject: Warning [MAINSTORE] - array has errors
Description: Array has 1 disk with read errors
Importance: warning

Disk 1 - WDC_WD40EFRX-68N32N0_WD-WCC7K2YZHFFE (sdd) (errors 6)

 

2. I log into unraid and see that the disk has been disabled

 

3. I shut down the array/server because I am going on a long trip and don't want anything to happen while away

 

4. I power the server back up and take this diagnostic

 

I have gotten 'read errors' before and the disk was automatically disabled the previous time as well

[JorgeB]

Disk kooks fine, but you should have grabbed diags before shutting down, now we can't see what happened, assuming emulated disk is mounting correctly replace cables on that disk to rule them out and rebuild on top.

[dvaldez]

Is there any way to re-enable or rebuild on the same disk or do I need to insert another disk?

 

I tried changing ports/cables on this disk and it still shows disabled

[JorgeB]

https://wiki.unraid.net/Troubleshooting#Re-enable_the_drive