Parity-Check - P corrected, sector= [...] - same 5 sectors

[minority]

Hi!

 

After running with 2 x LSI SAS9217-8i cards flawlessly for some years, I decided to switch to some ASM1166/ASM1064 cards for better power consumption (save on my electricity bill 🙂).

 

It's 2 x ASM 1166 and 1 x ASM 1064 and then eight on-board SATA ports on a Gigabyte C246M-WU4. Unraid 6.9.2.

 

The problem is, now when I run a parity check, I get 5 errors... for some reason on the same sectors.

 

I'm running a second parity check now and the errors haven't come up yet, and I don't think they will.

So it seems like it only occurs on a fresh power up (parity check after a restart).

 

I used to have a similar issue with a AOC-SAS2LP-MV8 (at least similar in appearance to me), where errors would always come up on first parity check after powering on - but I'm not sure if with that card it's always the same sectors.

 

Sep 20 03:09:37 nas2015 kernel: md: recovery thread: P corrected, sector=2743151176
Sep 20 03:09:37 nas2015 kernel: md: recovery thread: P corrected, sector=2743151184
Sep 20 03:09:37 nas2015 kernel: md: recovery thread: P corrected, sector=2743151192
Sep 20 03:09:37 nas2015 kernel: md: recovery thread: P corrected, sector=2743151200
Sep 20 03:09:37 nas2015 kernel: md: recovery thread: P corrected, sector=2743151208

 

Nov 11 02:09:59 nas2015 kernel: md: recovery thread: P corrected, sector=2743151176
Nov 11 02:09:59 nas2015 kernel: md: recovery thread: P corrected, sector=2743151184
Nov 11 02:09:59 nas2015 kernel: md: recovery thread: P corrected, sector=2743151192
Nov 11 02:09:59 nas2015 kernel: md: recovery thread: P corrected, sector=2743151200
Nov 11 02:09:59 nas2015 kernel: md: recovery thread: P corrected, sector=2743151208

 

I have this feeling that if I switch back to the 9217-8i cards the problem will go away.

 

Diagnostics from both runs is attached.

 

Can someone help explain what is happening?

 

Thanks.

 

unraid-diagnostics-20221112-1319.zip unraid-diagnostics-20220920-1809.zip

[JorgeB]

11 minutes ago, minority said:

but I'm not sure if with that card it's always the same sectors.

They were also always the same sectors.

 

11 minutes ago, minority said:

I have this feeling that if I switch back to the 9217-8i cards the problem will go away.

Mostly likely, looks like a controller problem.

 

[minority]

Hello JorgeB!

 

Any tips to figure out which of the controllers it is acting up?

Everyone else reports great experiences with these controller cards.

 

Kind regards.

[JorgeB]

Easiest way would be to swap one of the with the LSI and test.

[Frank1940]

You can also read this thread:

 

        https://forums.unraid.net/topic/85085-solved-disk-errors/#comment-789393

 

I know that this is several years old now (and is based on an earlier thread that I can't access) but it is worth a try if you don't need IOMMU. 

[minority]

Thanks both for the reply. I will do some reading and some testing, I was hoping for a less manual way (less time consuming) of diagnosing what is causing the issue. Will post at some point once I get to the bottom of it. The second parity-check (without reboot) completed without finding any errors.