read errors during parity sync, what now?


Recommended Posts


Hello everyone.
 

I attached the diagnostic file, but I will explain everything here too.
I have 3 data drives (6TB, 4TB, 2TB), 1 parity (6TB).


yesterday my 6TB drive had a single write error. I then shut down everything and reconnected every sata connection, as I have replaced a disk a few days earlier, so it's not impossible that I loosened some cable mistakenly.

Hoping that the disk is not fully toast, I started a parity sync. This ran fine until 30%, then the speed dropped to around 200KB/s for at least 5 Minutes, after that, the 2 TB drive reported read errors, after a few minutes it was about 3000 Errors (but it did not increase any further). During and after those errors, the speed continued with 200 KB/s.

But, (luckily?) it finished reading that drive (the general progress of the parity snyc reached more than 2 TB) and currently is continuing to parity sync.

What can I expect now? I'm hoping I will only have a few corrupted files, or will there be more severe damage?

Also, what should I do now? I'm currently ordering a replacement drive for the 2 TB disk.
The 6 TB drive seems to work fine during the parity sync and has not encountered any further error (to my knowledge). I'm guessing you will recommend me to also replace the 6 TB drive?

tower-diagnostics-20220625-0128.zip

Edited by lustigpeter
pressed enter by mistake
Link to comment
2 hours ago, JorgeB said:

You'll likely have some data corruption on disk3, unless the read errors coincided with empty space.

 

Disk1 looks OK, looks more like a power/connection problem.

Wait, so the 2TB disk with the read errors is fine, what should I do with it?

 

Also what about the 6TB data disk that had the write error?

Are you saying I don't have to replace any of those?

Edited by lustigpeter
Link to comment
42 minutes ago, lustigpeter said:

what should I do with it?

You can run ane extended SMART test, if it passes check/replace cables.

 

43 minutes ago, lustigpeter said:

Also what about the 6TB data disk that had the write error?

Diags are after that error, they start over after every reboot, so cannot comment.

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.