snapshots, which order to delete

So you have several iterations of snapshots under each other.
And you want to only keep the current version.
What to do?















As you can see veeam didn’t remove the snapshot like it should have and now we have several change disks.
So we have Parent disk, snap1, snap2, snap3, and current snap






DELETE ALL: is a nono
According to yellow bricks, http://www.yellow-bricks.com/2008/01/07/delete-all-snapshots/, you DON’T want to hit the "delete all".
Why?
" Snapshot 3 is merged into Snapshot 2, Snapshot 2 is merged into Snapshot 1, Snapshot 1 is merged into the original flat.vmdk and afterwards all snapshot files are deleted." Pasted from <http://www.yellow-bricks.com/2008/01/07/delete-all-snapshots/> "


Meaning: : if you do delete all,
current snap is merged into snap3,
current +snap3 is merged in snap2, and
current +snap3 +snap2 I merged into parent.
But
Untill all is merged nothing is deleted.
So
disk  space needed because very high.


tips
"Oinkmaster is right, the nicer way to remove several snapshots is to remove the nearest to the Base Disk repeatedly. This doesn’t require additional space."
Pasted from <http://www.yellow-bricks.com/2008/01/07/delete-all-snapshots/>






So how do we do this?
Delete snap3, then snap2, then snap1 and we should be good.