Re: LSISAS1068E + WDC WD2002FYPS: I/O error & Sense Key

[James Bottomley <James.Bottomley@HansenPartnership.com>]

On Mon, 2009-08-03 at 12:06 -0400, Allan Wind wrote:
> On 2009-08-03T09:34:53, James Bottomley wrote:
> > On Mon, 2009-08-03 at 01:08 -0400, Allan Wind wrote:
> > >
> > > The above complains about sector 3907028974 which is exactly 
> > > 19566 sectors greater than the size of the raid array according 
> > > to parted.  In other words it appears to be an access to the last 
> > > sector of the array.
> > 
> > If it's a read beyond the end of a partition, then it's possible it got
> > rejected in the partition checking logic before ever reaching the I/O
> > controller (which would explain why no messages from the fusion in the
> > log).
> > 
> > However, I don't think the analysis is correct.  Parted says
> > 
> > 
> > > Number  Start   End          Size         File system  Name  Flags
> > >  1      34s     19565s       19532s                          bios_grub
> > >  2      19566s  3907029134s  3907009569s  ext3               raid
> > 
> > So the absolute sector number 3907028974 is within partition 2.
> 
> I was actually trying to make a different point.  Namely that it 
> was curious that the error message complains about sector
> 3907028974 which is exactly the size of the array + 19566, or in 
> other words 1 sector past the end of array:

That's where md stores its superblock ... but it's still within the
partition.

James