>>>>> "n" == none  <[EMAIL PROTECTED]> writes:
>>>>> "rm" == Robert Milkowski <[EMAIL PROTECTED]> writes:

     n> eg, 
     n> zfs list-shared 
     n> SHARED COLLECTION                                        USED 
     n> (storage/fs, storage/[EMAIL PROTECTED], storage/[EMAIL PROTECTED]) 100G

    rm> how much space will I regain if I delete snapshot #2 #4 #7....

without dedup, I think any SHARED COLLECTION will be contiguous.
It'll always be ``if I delete #2, #3, #4''.  so if you have n
snapshots, you'll have up to

   n * n+1
   -------
      2

SHARED COLLECTION's.  kind of a lot, but not totally ridiculous.

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