TL:DR

Powerloss on server with 12 disks.

2 Parity Checks with 1024/1124 errors

3 disks with a few "reported Uncorrected" errors

3 disks passed Extended SMART test

Reboot; Parity check (without correction) 0 errors

3 disks passed Short SMART test

Another test? Or acknowledge errors and get on with it?

 

 

Story:

I had a accidental powerloss a few days ago. Used a Blitzwolff plug to measure the power of the server (before UPS) but when opening the app to watch the power consumption a ghost touch on the screen resulted in a power off... So, never doing that again. I tried searching online about what to do next. These are the steps that I followed:

 

After reboot Parity Check ran

Result: errors 1024 - Parity valid

 

Three disks (array of 12 disks) showed a orange thumb down:

parity drive: Reported uncorrect 10

parity2 drive: Reported uncorrect 26

disk 10: Reported uncorrect 6

 

Ran extended SMART test on all three drives:  Passed

 

Ran another Parity Check:

Result: errors 1124 - Parity valid

 

That concerned me a bit, but after reading here I did the following:

Reboot

Reran Parity Check (without error correction): Result: 0 errors - Parity valid

 

Ran another short SMART test on all three drives: Passed

 

So am I good to go? Just acknowledge the errors on the three drives and try to forget this ever happened?

Or should I be running another Extended SMART test or Parity Check (with/without error correction)?

 

Your advise is greatly appreciated!

Edited January 16, 20215 yr by Squnkraid

2 hours ago, Squnkraid said:

2 Parity Checks with 1024/1124 errors

Were these consecutive checks? If so I would worry about a different number of sync errors.

1 hour ago, JorgeB said:

Were these consecutive checks? If so I would worry about a different number of sync errors.

 

I just double checked in Parity/Read-Check history and I wrote it down wrong; both were 1124.

 

2021-01-16, 12:52:45 - 14 hr, 59 min, 32 sec - 92.7 MB/s - Status OK - Errors 0

Reboot

2021-01-15, 07:33:25 - 15 hr, 53 min, 47 sec - 87.4 MB/s - Status OK - Errors 1124

2021-01-14, 00:34:02 - 15 hr, 28 min, 25 sec - 89.8 MB/s - Status OK - Errors 1124

Startup

Powerloss

Edited January 16, 20215 yr by Squnkraid

Ok, that's much better, assuming the first check was non correct, you should be OK, but I would just run another non correcting check to make sure.

On 1/17/2021 at 9:41 AM, JorgeB said:

Ok, that's much better, assuming the first check was non correct, you should be OK, but I would just run another non correcting check to make sure.

The very first check after the powerloss was 'correcting', right? Does that matter? Unraid started that Parity Check by itself and by default "correcting" is enabled, right?

 

Anyway, ran another Parity Check (non-correcting) as you suggested and it passed:

Parity check finished (0 errors)
Duration: 14 hours, 44 minutes, 35 seconds. Average speed: 94.2 MB/s

 

Do I need to do anything else before I bring my dockers online again?

 

Because the 3 drives that were affected still show an "error" in the dashboard array window. I assume I just need to "acknowledge" the errors and get on with it? Because I already did a Short and a Extended SMART test on all 3 drives. And they all passed.

6 minutes ago, Squnkraid said:

The very first check after the powerloss was 'correcting', right? Does that matter? Unraid started that Parity Check by itself and by default "correcting" is enabled, right?

Auto check after a power loss is non correct.

 

6 minutes ago, Squnkraid said:

Do I need to do anything else before I bring my dockers online again?

Should be fine.

 

6 minutes ago, Squnkraid said:

I assume I just need to "acknowledge" the errors and get on with it?

Yep.

1 hour ago, JorgeB said:

Auto check after a power loss is non correct.

 

Didn't know that. After thinking about it this also makes more sense and explains the two times 1124 errors found. Rebooted the server and everything is running great again

 

Thank you again for being so helpful! Greatly appreciate it!