On 23.10.2019 17:40, Gionatan Danti wrote: > 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 At this case if we get reset before a full chunk written, the tail of the chunk will be a foreign old data (if meta data already written) - little security problem. We need firstly write a data to the disk and then give the fully written chunk to the volume. But I think it's 'little' complicate matters. > block is zeroed in any case, even if it is going to be rewritten entirely. > > Do I remember wrongly? >
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