Don't use a off the shelf database. They are overkill for this.
This only needs a very single table key->value store where every transaction is only a single access. I would just map it to a hash table mapped directly to the raw disk. Doesn't need transactions with a log if done right.
The hash spreads out the allocation, no information leaks for the allocation. If you don't have a log there are no time stamps.
Modern disks are big enough that you dont need to worry about resizing the hash table. And the random salt makes collisions unlikely enough.
This only needs a very single table key->value store where every transaction is only a single access. I would just map it to a hash table mapped directly to the raw disk. Doesn't need transactions with a log if done right.
The hash spreads out the allocation, no information leaks for the allocation. If you don't have a log there are no time stamps.
Modern disks are big enough that you dont need to worry about resizing the hash table. And the random salt makes collisions unlikely enough.