Re: Data recovery (was: Re: SETI@home (ca. 2000) servers heading to salvage)

[Paul Koning via cctalk]

> On Apr 4, 2022, at 10:55 AM, Warner Losh via cctalk <cctalk@classiccmp.org> 
> wrote:
> 
> That's what a sanitize operation does. It forgets the key and reformats the
> metadata with a new key.

Yes, but the devil is in the details.  For example, for the SSD case, it is 
necessary verify that the flash block that previously held the key information 
has been explicitly erased (successfully) and not merely put on the free list.  
That's a detail I once pried out of a manufacturer, insisting they were 
required to answer in order to get the business.

        paul