On Mon, 2009-08-03 at 12:06 -0400, Allan Wind wrote:

On 2009-08-03T09:34:53, James Bottomley wrote:

quoted

On Mon, 2009-08-03 at 01:08 -0400, Allan Wind wrote:

quoted

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

quoted

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