# Re: Problem with XOR Engine

- From: NeilBrown \<hidden\>
- Date: 2015-08-11 21:05:29 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2015/08/6630223
- Thread: https://ratatoskr.run/linux-raid/2015/08/6630223/t.md

```text
On Mon, 10 Aug 2015 23:49:46 +0000 (GMT) Tarak Ramgopal Anumolu
[ref] wrote:

> Samsung Enterprise Portal mySingle
> 
> Hi
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> My name is Tarak.
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> I got some problem with the XOR engine while creating the RAID array.
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> The parity data is getting corrupted and my system is not able to recognize it and some how we are getting the hard disk error.
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> I found the above issue is happening when I  enable  CONFIG_RAID_ZERO_COPY=y in my Linux configuration.

My Linux doesn't contain a CONFIG_RAID_ZERO_COPY config option.
Maybe you are using a different Linux.

NeilBrown


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> Without this option everything is working fine.
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> Following are the version details
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> Linux : 3.0.34
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> GCC : 4.6.2 (GCC) ) 
> mdadm : v3.2.5
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> I want to know the way to fix the RAID parity error.
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> Please help me on this.
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> Tarak Ramgopal Anumolu 
> 
> Security Solution Division
> 
> SAMSUNG TECHWIN CO.,LTD
> 
> Phone : +82-70-7147-8396
> 
> Mobile: +82-10-7249-8396
> 
> E-mail : tarak.a@samsung.com
> 
>  
> 

```