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Re: file modifications get lost due to FAT 2s time resolution

From: Martin Tomes <lists_at_tomes.org>
Date: 2004-07-19 19:43:40 CEST

kfogel@collab.net wrote:
> Martin Tomes <lists@tomes.org> writes:
>
>>The entries file time and the actual file timestamp may differ after
>>the precision on the file timestamp is lost so a status has to compare
>>the content of the file and the pristine copy in order to find out if
>>the file content has changed. If the time in the entries file and the
>>datestamp on the file match then there is no need to do the diff.
>>This user had copied from NTFS to FAT (memory stick) and then back to
>>NTFS.
>
> So it's not merely that FAT might not notice events within 2 seconds
> of each other, but it actually loses precision (i.e., *can't* store)
> timestamps too close to each other when copied from another file
> system? I hadn't realized that.
>
> By the way, have you done any experiments to confirm that this is the
> cause of the slower status? It might also just be that the memory
> stick is, you know, slower :-).

By then it has been copied back off the memory stick onto another
computer, so it's not the speed of the memory stick.

-- 
Martin
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Received on Mon Jul 19 19:43:55 2004

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