I started with 5 drives. 1 has failed (i.e. fails to communicate anything) and 2 more are returning read errors. My plan is to use ddrescue to store the 4 working drives to iso files.
After this I can map the iso's to virtual devices, however, how do I force mdadm to scrub the bits even if
No md superblock detected on a particular iso file to a seprate drive without attempting recovery of the originals (since the iso's are mounted readonly)?
I have saved the output of
mdadm -E for three of the devices, so I know the 'chunk-size' and 'layout'.