[linux-lvm] exposing snapshot block device

[Gionatan Danti]

On 23/10/19 15:05, Zdenek Kabelac wrote:
> Yep - we are recommending to disable zeroing as soon as chunksize >512K.
> 
> But for 'security' reason the option it's up to users to select what 
> fits the needs in the best way - there is no  'one solution fits them 
> all' in this case.

Sure, but again: if writing a block larger than the underlying chunk, 
zeroing can (and should) skipped. Yet I seem to remember that the new 
block is zeroed in any case, even if it is going to be rewritten entirely.

Do I remember wrongly?

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Danti Gionatan
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