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Date: Mon, 04 May 2015 21:05:27 +0200
From: Milan Broz <gmazyland@gmail.com>
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Subject: Re: [dm-crypt] cryptsetup 1.6.2 hands on "waiting for zero"
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To: Mrukant Popat <mrukant@gmail.com>
Cc: dm-crypt <dm-crypt@saout.de>

On 05/04/2015 08:56 PM, Mrukant Popat wrote:
> Dear All,
> 
> I am using cryptsetup 1.6.2 on a freescale imx6 processor. However when I run "cryptsetup -v --debug luksFormat /dev/sdb1" it hangs. Below is the output.

...
> 
> # Udev cookie 0xd4d2ea2 (semid 0) decremented to 1
> 
> # Udev cookie 0xd4d2ea2 (semid 0) waiting for zero


In fact this has nothing to do with cryptsetup itself, it is device-mapper library internals.

Usually it means misconfiguration of libdevmapper installation or wrong or missing device-mapper udev rules.

Do you compile it yourself? What distro is it?

Milan