25 Nov
1998
25 Nov
'98
3:35 p.m.
Andrew Bond wrote:
For the oldest snapshot, you can tell how much space it'll free up by looking at the cumulative for all snapshots before it, and the cumulative for it. The difference is what will get freed up. (Does this make sense? You won't get the full amount reported for that snapshots individually, because others will be referencing many of the same blocks.)
So why doesn't the command do the math and show us this? To quote the talking Barbie doll, "Math is hard!" :-)
It think it would be reasonable to add a column to the output called "Delete Guess" which would be a VERY loose guess at how much space would be recovered if that snapshot was deleted (out of order).