From: Robert Nichols <rnicholsNOSPAM@comcast.net>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] cryptsetup luksFormat with the size option
Date: Sat, 01 Feb 2014 17:33:27 -0600 [thread overview]
Message-ID: <lck07r$93q$1@ger.gmane.org> (raw)
In-Reply-To: <20140201213444.GA6778@tansi.org>
On 02/01/2014 03:34 PM, Arno Wagner wrote:
> 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.
I submit that for the luksFormat action, the --size option does _nothing_!
The size is not recorded in the LUKS header, and luksFormat does not open
the encrypted device, so there is neither a temporary nor a persistent
effect from that option. In fact, there is not even a check that the
requested size is within the limits of the underlying device.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
next prev parent reply other threads:[~2014-02-01 23:33 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
2014-02-01 23:33 ` Robert Nichols [this message]
2014-02-02 0:18 ` Arno Wagner
2014-02-02 0:35 ` Robert Nichols
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