--- On Thu, 28/1/10, Goswin von Brederlow <goswin-v-b@xxxxxx> wrote: > From: Goswin von Brederlow <goswin-v-b@xxxxxx> > Subject: Re: Why does one get mismatches? > To: linux-raid@xxxxxxxxxxxxxxx > Date: Thursday, 28 January, 2010, 20:24 > "Tirumala Reddy Marri" <tmarri@xxxxxxxx> > writes: > > > I just tried and miss-match count is zero. > Interesting, is XOR engine > > doing something wrong ? . Then I ran a test where I > raw-write the file > > to /dev/md0. Then did the raw-read for the same size. > In this case XOR > > matched as expected. Then I failed a drive using > "mdadm -f /dev/md0 > > /dev/sda". Then I read the same size data again from > /dev/md0. And > > checksum matches too. > > What is this mean XOR engine is doing right thing. But > "chec/repair" > > test is not functioning properly with XOR-engine ? > > > > Or is this something to do with how the buffers > are handled ? may they > > are cached ? > > > > > > -Marri > > No idea. But if everything works without the XOR engine and > gives > mismatches with then I would think there is a software or > hardware error > there and not in the cable or disks. > > MfG > Goswin > -- > 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 > i think my RAM is fecked - does that sound like a possible cause? memtest86 gives PAGES of red errors when run but the POST gives nothing and the machine boots.... it has 512MB i have some more on order as a speculative.. -- 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
