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DateSat, 5 Aug 2006 00:55:47 -0700
From"Avinash Ramanath" <>
SubjectRe: Zeroing data blocks
Hi,

As per your suggestion, if I write a file with zero bits, it would
remap to other pages, and I might not zero the real pages. So is there
any other way that I can access the pages that a file is using?

On 7/9/06, Arjan van de Ven <arjan@infradead.org> wrote:
> On Sat, 2006-07-08 at 18:56 -0700, Avinash Ramanath wrote:
> > I am trying to zero data blocks whenever an unlink is invoked as part
> > of a secure delete filesystem.> [> Hi,>> just a question... how secure do you want to be?> (just asking because zeros might not be the best pattern when protecting
> against government type use :)
I would be using zeroes multiple times followed by random bit patterns.


> > I tried to zero the file by writing a buffer (of file size) with
> > zeroes onto the file.>> that's not so nice since there is no guarantee that the filesystem or
> the disk won't remap the data blocks underneath you...
>>>
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