[Info-vax] Request description of UFS for VMS person

[ChrisQ]

Bill Gunshannon wrote:

> Are you saying that the blocks used by a file that has been deleted are
> not going to be reused?  Assuming a decent file allocation scheme I would
> expect the freed blocks to be in locations that were likely to be considered
> prime real estate for the next file that needed space.
> 
> bill
> 

I guess you could define an algorithm that ensured that the most 
recently deallocated blocks went to the back of a queue which defined 
which blocks were next allocated. A sort of disk block usage fifo 
scheme. On modern systems with sparsely used drives, it could provide a 
larger window for undelete operations.

Asuming that you keep backups though, undelete becomes more work than 
it's worth in system complexity terms...

Regards,

Chris