On Mon, 28 Oct 2019 13:27:32 -0700 Marc MERLIN <marc@xxxxxxxxxxx> wrote: > Out of desperation, I ran hdrecover /dev/sdx on all my drives. It reads the > whole drive block by block, allowing to re-read a block many times to try > and rescue data from it, or just re-write it with 0's. > That one again, ran fine, no error. It is weird that this succeeds, usually a "pending sector" means it's unreadable until overwritten. One possibility is that your RAID card either sets up a HPA at the end of each drive to store metadata there, or just presents them as somewhat smaller than their actual size to the OS. If the pending sectors happen to be in that walled off area, then no wonder that no OS tools can get to them. See `hdparm -N`, or if possible compare `blockdev --getsize64` with the same model drives which are not connected via a RAID controller. -- With respect, Roman
