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Re: [linux-lvm] RFC: DM encryption target?



On Fri, Sep 26 '03 at 15:04, Christophe Saout wrote:
> Am Fr, den 26.09.2003 schrieb jon+lvm silicide dk um 14:48:
> 
> > > I don't know, but couldn't the use of a one-sector block slow things
> > > down because of alignment issues? Perhaps using a 4k block would be more
> > > useful or storing the sector at the end of the device (like the linux
> > > raid info sector).
> > 
> > maybe, but does it matter? 
> 
> No, I meant the following: Let's assume you are using crypto on a raid
> 0/5 device or something. Usually the filesystem uses 4k blocks. 
> [ ... ] A lot of harddisks these days use internal blocks that are
> larger than 512 bytes so there are also alignment issues.
While I don't have any idea how harddisks work internaly thise days,
I've no problem to loose 4k or even 16k if it improves anything. 
But I would still like to get it to the beginning of the
partition/drive/device.

Mainly to be able to do

less -f $DEVICE

to figure out what it's all about. I do this more often than not and
hate it if all i get back is just binary garbage. 

Everyfile should tell me what is is for/from in plain text. 
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