-----Original Message----- From: H. Peter Anvin [mailto:hpa@xxxxxxxxx] Sent: Wednesday, April 21, 2010 6:01 PM To: Tirumala Reddy Marri Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: RAID-6 polynomial On 04/19/2010 04:44 PM, Tirumala Reddy Marri wrote: > What is the default polynomial to calculate RAID-6 syndrome in > async_pq.c? Is it 0x11d ? > >Yes. > > -hpa > ---- Is there a reason for hard coding 0x11d as polynomial ? The problem I ran into was when I was trying disk fail test there was issue in recovering the data. Then it turned out to be ADMA was using polynomial 0x14d and SW algorithm was using 0x11d. This was because syndrome calculated using DMA engine and recovery done using SW api. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
