Millions of Read Errors during Parity

[Waddle]

Hi,

 

https://imgur.com/a/Om7LDB2

I'm hoping somebody could help me to understand the diagnostics and why I'm getting millions of read errors during parity-sync. Current ETA is 10 days for the parity check to finish (took 10 hours when I first set up the array a few days ago).

I thought a bad PSU was the explanation but I've now swapped that out for a brand new Corsair model and still get errors (although fewer this time).

 

I've re-seated the cables multiple times but that also hasn't made much difference.
 

I'm using these cables:
https://www.amazon.co.uk/gp/product/B07MXWB6S2/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

LSI 9211-8i

i5-3570K CPU

and 16 GB RAM

 

I've tried running SMART checks but the short test doesn't seem to show anything obvious to my eye, and I don't think the longer test will actually run.

I would greatly appreciate any help anyone could offer!
 

 

 

Edited September 20, 2022 by Waddle

[trurl]

attach diagnostics to your NEXT post in this thread

[Waddle]

Sorry I completely missed the massive 'attach files' at the bottom, I was looking for it on the top toolbar!

Diagnostics attached properly this time!

beamish-nas-diagnostics-20220920-1555.zip

[JorgeB]

Formatted with type 1 protection

 

You need to remove this protection from the disks, more info below:

 

https://forums.unraid.net/topic/93432-parity-disk-read-errors/?do=findComment&comment=864078

https://forums.unraid.net/topic/110835-help-with-a-sas-drive/

[Waddle]

7 minutes ago, JorgeB said:

Formatted with type 1 protection

 

You need to remove this protection from the disks, more info below:

 

https://forums.unraid.net/topic/93432-parity-disk-read-errors/?do=findComment&comment=864078

https://forums.unraid.net/topic/110835-help-with-a-sas-drive/

Thank you!
Do you know if there is a way to remove the type1 protection without losing data?

[JorgeB]

AFAIK it requires re-formatting.

[Waddle]

Thanks again, I'll backup the files that are on there and try again with the Type 1 protection removed

[Waddle]

So far so good, I've run the following command for each SAS disk:
sg_format --format --fmtpinfo=0 /dev/sdb

Then they needed formatting from the Main tab

 

Halfway through Parity check with 0 errors! 

[Waddle]

All looks good now

Thanks again for your help!