Dmitry A. Kuminov wrote:

> Discarding a snapshot does just that: zaps one particular state, without 
> affecting other states. It means that all other snapshots as well as the 
> current machine state will remain intact. Technically (your assumption 
> is correct), this is achieved by combining (merging) delta 
> (differencing) VDIs of the snapshot being discarded with the VDIs of its 
> parent snapshot to preserve the consistency of the VDI chain.

Correction: the differencing VDI of the discarded snapshot gets merged 
with its child VDI of course, not with the parent.

-- 
Regards,
Dmitry A. Kuminov


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