On Mon, Jun 29, 2015 at 5:35 PM, Nate Clark [off-list ref] wrote:

Hello,

I have encountered a strange error while reading from a raid 1 device.
If I read from the md device I encounter an I/O error, however if I
read from the underlying devices there is no issue.

It appears both drives in the array have identical bad blocks list. I
am not sure why any blocks were marked bad since I don't see any drive
I/O errors in the logs and the smart output from each drive shows they
are healthy.

Thanks,
-nate