Re: Announce loop-AES-v1.6e file/swap crypto package

[Harmon Seaver <hseaver@cybershamanix.com>]

    What about other journaling files systems like XFS? 

On Wed, Jun 19, 2002 at 11:54:13AM +0300, Jari Ruusu wrote:
> Dale Amon wrote:
> > On Tue, Jun 18, 2002 at 09:02:32PM +0300, Jari Ruusu wrote:
> > > Problem is that reiserfs guarantees only meta-data integrity but does not
> > > guarantee file-data integrity in system crash situation, yet it assumes that
> > > all lower layer devices do provide data integrity and ordered writes. When
> > > you put journaled fs on loop that can't provide data integrity and ordered
> > > writes all the way down to disk platters, you have problems.
> > >
> > 
> > Ah, so you've now explained the reason why I had the only fault I've
> > ever seen on cryptoapi. I had this on my laptop:
> > 
> > >     reiserfs -> loop -> reiserfs -> partition
>            #2                  #1
> 
> Here reiserfs #1 does not guarantee ordered writes, so fs corruption is
> possible on reiserfs #2.
> 
> > and I've had problems with corruption on occasion. However I've had
> > 
> > >     reiserfs -> loop -> raid1 -> partitions
> > 
> > and have had about 2 years of trouble free operation.
> 
> Here loop and raid1 provide ordered writes so no corruption.
> 
> Regards,
> Jari Ruusu <jari.ruusu@pp.inet.fi>
> 
> -
> Linux-crypto:  cryptography in and on the Linux system
> Archive:       http://mail.nl.linux.org/linux-crypto/

-- 
Harmon Seaver	
CyberShamanix
http://www.cybershamanix.com
-
Linux-crypto:  cryptography in and on the Linux system
Archive:       http://mail.nl.linux.org/linux-crypto/