Re: [gentoo-user] LUKS

["Boyd Stephen Smith Jr." <bss03@volumehost.com>]

On Monday 09 January 2006 10:57, Cláudio Henrique 
<rapaduraatomica@gmail.com> wrote about '[gentoo-user] LUKS':

> has anybody here used LUKS?

I haven't, but when I next create an encrypted pv/lv, I will be.

> If I used on any of my HDs, will I be able to update them?

What do you mean by update?  LUKS does allow you to change the key.

> What if the 
> data of some file gets corrupted, will I loose the whole HD?

Depends on how the corruption occurs.  There are a least to ways for this 
to happen:
1) Hardware.  For one reason or another, a bit gets swapped on the HD.  In 
this case what you lose will depend on your cypher, key size, and key 
schedule.  It may be as small as 8 bytes on disk or as large as a full 512 
byte sector.  Of course, if this happens in the fs superblock (or other 
critial area, like the LUKS header) this could be enough to render the 
disk inaccessible, but even a single bit being swapped in the superblock 
can do that.
2) Software.  In particular misbehaving software that accesses the HD via 
LUKS.  In this case the read data will be exactly what is written; LUKS 
can't magically fix errors, but it's not going (supposed) to introduce 
them either.

-- 
Boyd Stephen Smith Jr.
bss03@volumehost.com
ICQ: 514984 YM/AIM: DaTwinkDaddy

-- 
gentoo-user@gentoo.org mailing list