setup-storage: preserve partitions until the layout changes

[Thomas Lange]

>>>>> On Thu, 24 Feb 2011 09:56:20 +0000, Michael Tautschnig <mt at debian.org> said:

    > setup-storage: the problem is the very very small differences in the semantics
    > of the various preserve* options, which make it prone to both subtle
    > implementation errors and misunderstandings on the user side. 
+1 from me.

-- 
regards Thomas