Tower kernel: md: recovery thread: P corrected Errors

[riff.79]

Hi team!

 

I am having an issue that I can put my finger on. I have am seeings about 2562 errors during a parity check. The error I am seeing is:

 

Tower kernel: md: recovery thread: P corrected, sector=xxxx

 

I have taken a look at the logs but I'm not sure where to look - I don't see any obvious disk errors. It always happens in the middle of a parity check. 

 

I have checked the cables too. All firmly in place. 

 

Any help would be greatly appreciated. 

 

tower-diagnostics-20200813-1440.zip

[JorgeB]

Any unclean shutdown before this check? If not run another check and post new diags if more errors.

[riff.79]

49 minutes ago, johnnie.black said:

Any unclean shutdown before this check? If not run another check and post new diags if more errors.

No, that's the strange bit. Ill run a few more and see how it goes. The parity check I ran before this one found the exact same number of errors.

Edited August 13, 2020 by riff.79

[JorgeB]

37 minutes ago, riff.79 said:

The parity check I ran before this one found the exact same number of errors.

I assume that was a non correcting check?

[riff.79]

9 minutes ago, johnnie.black said:

I assume that was a non correcting check?

Nope was a correcting check. This is my backup unit btw, primary data is on another Unraid.

[JorgeB]

Not a good sign, still run another one so we can compare the affected blocks.

 

 

[riff.79]

11 minutes ago, johnnie.black said:

Not a good sign, still run another one so we can compare the affected blocks.

 

 

Will do! Thanks for your help so far. First issue since 2012 with parity, not a bad run! This machine is about 2 years old. 

Edited August 13, 2020 by riff.79

[riff.79]

17 hours ago, johnnie.black said:

Not a good sign, still run another one so we can compare the affected blocks.

 

 

No errors this time. Ill run a third just to be sure. Hope I have not wasted your time.