The snapshot related commands that the vmsvc/ namespace has available are:

  snapshot.create
  snapshot.dumpoption
  snapshot.get
  snapshot.remove
  snapshot.removeall
  snapshot.revert
  snapshot.setoption
  get.snapshotinfo

Удалить все снапшоты всех VM на хосте:

vim-cmd vmsvc/getallvms|awk '{print $1}'|grep '^[0-9]\+'|while read line; do echo $line; vim-cmd vmsvc/snapshot.removeall $line; done