[dm-crypt] ioctl missing

Milan Broz mbroz at redhat.com
Tue Jul 24 12:01:39 CEST 2012

On 07/24/2012 11:23 AM, Benoît 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.


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