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Date: Tue, 24 Jul 2012 12:01:39 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [dm-crypt] ioctl missing
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To: =?ISO-8859-1?Q?Beno=EEt_Kuhn?= <benoit.ku@gmail.com>
Cc: dm-crypt@saout.de

On 07/24/2012 11:23 AM, Beno=EEt Kuhn wrote:

> My problem is when I start my OS and try to launch the command
> "cryptsetup luksOpen /dev/devicename nameoflocation", it asks me the
> passphrase and after having enter anything (I mean whatever the
> password, if it is good or wrong), I have the following message
> "device-mapper: reload ioctl failde: No such file or directory".

Please add --debug and post output.

But I guess you have misconfigured libdevmapper library.
If compiled with udev support, it requires some udev rules to be installed,
other wise it cannnot create device node.

Milan