Problem with XOR Engine

Problem with XOR Engine

[Tarak]

Hi

My name is Tarak.

I got some problem with the XOR engine while creating the RAID array.

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.

I found the above issue is happening when I  enable  
CONFIG_RAID_ZERO_COPY=y in my Linux configuration.


Without this option everything is working fine.
 

Following are the version details

Linux : 3.0.34
GCC : 4.6.2 (GCC) ) 
mdadm : v3.2.5 
 

I want to know the way to fix the RAID parity error.

Please help me on this.

Thanks and Regards
Tarak

Problem with XOR Engine

[Tarak Anumolu]

Hi

My name is Tarak.

I got some problem with the XOR engine while creating the RAID array.

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.

I found the above issue is happening when I  enable  
CONFIG_RAID_ZERO_COPY=y in my Linux configuration.

Without this option everything is working fine.

Following are the version details

Linux : 3.0.34

GCC : 4.6.2 (GCC) ) 
mdadm : v3.2.5 


I want to know the way to fix the RAID parity error.

Please help me on this.



Thanks & Regards

 



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

Re: Problem with XOR Engine

[Carsten Aulbert]

Hi Tarak

On 11.08.2015 08:16, Tarak Anumolu wrote:
> I got some problem with the XOR engine while creating the RAID array.
> 

I doubt that you will get much (more) attention if you continue to spam
the list, also with people distributed around the world, expecting a
solid reply within less than 8 hours is at least a bit questionable,
don't you think so?

> 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.
> 
> I found the above issue is happening when I  enable  
> CONFIG_RAID_ZERO_COPY=y in my Linux configuration.
> 
> Without this option everything is working fine.
> 

I think (I'm only a user myself and no developer), without much more
extra information, it will be hard to help, i.e. more information what
kern.log/dmesg shows in both situations, /proc/mdstat output, mdadm
examine, ....

Cheers

Carsten

Re: Problem with XOR Engine

[NeilBrown]

On Mon, 10 Aug 2015 23:49:46 +0000 (GMT) Tarak Ramgopal Anumolu
<tarak.a@samsung.com> wrote:

> Samsung Enterprise Portal mySingle
> 
> Hi
> 
>  
> 
> My name is Tarak.
> 
>  
> 
> I got some problem with the XOR engine while creating the RAID array.
> 
>  
> 
> 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.
> 
>  
> 
> 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


> 
>  
> 
> Without this option everything is working fine.
> 
>  
> 
> Following are the version details
> 
> Linux : 3.0.34
> 
> GCC : 4.6.2 (GCC) ) 
> mdadm : v3.2.5
> 
>  
> 
> I want to know the way to fix the RAID parity error.
> 
>  
> 
> Please help me on this.
> 
>  
> 
>  
> 
>  
> 
> 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
> 
>  
>