From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] cryptsetup luksFormat with the size option
Date: Sat, 1 Feb 2014 22:34:44 +0100 [thread overview]
Message-ID: <20140201213444.GA6778@tansi.org> (raw)
In-Reply-To: <52ED5E0B.3090300@mthode.org>
On Sat, Feb 01, 2014 at 21:50:19 CET, Matthew Thode wrote:
> Am I correct in stating that setting --size=8 will make the sectors 4k
> in size? Also, how can I check what existing luks volumes are set to?
>
> --
> -- Matthew Thode
>
No, you are not. As the man-page clearly states, this sets the
size of the underlying device as multiple of 512B sectors.
As item 2.17 of the FAQ states, LUKS does not have any issue
with 4k sectors, as it does not split or re-arrange requests.
I would strongly advise to read the documentation before
trying to set up a LUKS volume. There are a number of less
obvious pitfalls.
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name
GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718
----
A good decision is based on knowledge and not on numbers. - Plato
next prev parent reply other threads:[~2014-02-01 21:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-01 20:50 [dm-crypt] cryptsetup luksFormat with the size option Matthew Thode
2014-02-01 21:34 ` Arno Wagner [this message]
2014-02-01 23:33 ` Robert Nichols
2014-02-02 0:18 ` Arno Wagner
2014-02-02 0:35 ` Robert Nichols
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