On 24/01/17 21:15, Salatiel Filho wrote:

I really think it is very unlikely that two different disks from two
different brands would have problems at exactly the same block.
I have a question, who populates the badblock list ? Is the check
action send to the /sys/block/md??/md/sync_action OR each read error
updates it ?

I think it's a known problem - nobody seems to know quite why it happens
but when a block is added to the badblocks list it seems to get added to
every device. Given that modern hard-drives are supposed to relocate bad
blocks and not need a badblock list, I think that's why it's not been
found, most people especially those in the know just tend to disable
os-level badblocks.

Cheers,
Wol