Re: XFS information leak during crash

[Theodore Ts'o]

On Thu, Nov 03, 2005 at 12:45:49PM +0000, Alan Cox wrote:
> On Iau, 2005-11-03 at 11:11 +1100, Nathan Scott wrote:
> > On Thu, Nov 03, 2005 at 01:03:17AM +0100, Jan Kasprzak wrote:
> > > : it would only ever be uninitialised, previously-free space.
> > > 
> > > 	Yes, but an old data from previously deleted files
> > > (sendmail's temporary files, vim save files, etc) may contain
> > > a sensitive information.
> > 
> > Indeed.  But this is a generic issue affecting most filesystems;
> > its not specific to XFS as your original mail claimed.
> 
> Very true. You can use ext3 in data journalling mode if this is a
> concern but that guarantee has a performance cost

The default ordered journalling mode solves this problem at a much
lower cost.

						- Ted
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