Re: Implementing Encryption and Decryption in Raid Device Driver.

Hello Everybody,

Actually I forgot to mention the kernel I'am working
on, it is Montavista Kernel 2.4.19. In 2.4.19 there is
not support for dm_crypt i.e CONFIG_DM_CRYPT.

Hence for encryption/decryption , the hooks
raid5_make_request and raid5_end_read_request are
suggestable or not.

Please  suggest an approach.

Thanks & Regards
Chaitanya.

--- Luca Berra <bluca@comedia.it> wrote:

On Tue, Sep 13, 2005 at 10:14:47PM -0700, vinnakota
chaitanya wrote:

quoted

Hello Friends,

I'am working on a "RAID 5 Controller" device to

which

quoted

4 SATA hard drives are connected each of size 80GB.

My requirement is implementing encryption &
decrpyption for the device. As we don't have any
filesystem on the target, we are falling on raid
device driver . The first thing I want to ask is 

1. Whether this approach is recommendable or not.

why do you want to implement encryption in the raid
engine,
we already have more than one implementation that
plugs nicely over the
raid (dm-crypt or loop-AES), imho we don't need
anither one, and it does
not belong in the raid driver anyway, it is better
to stack multiple
components that do their job well, instead 

-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
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