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Date: Tue, 14 Jan 2014 15:51:54 +0100
From: Konrad <conrad.francois.artus@googlemail.com>
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Subject: [dm-crypt] Closing LUKS lvm partition times out on shutdown
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To: dm-crypt@saout.de

There are two LUKS containers - one SSD (lvm: root btrfs+swap 
patrtition) and one HDD (lvm: three btrfs data partitions).

When I shutdown, system stalls for a good minute because it can't 
unmount or close LUKS containers or both.
Here is what I can see:
http://postimg.org/image/tmojo19zx/
http://postimg.org/image/ty600sqfx/

And here's the log from the moment systemd reboot command is issued:
http://justpaste.it/e3cn

This is causing about a minute of delay upon shutdown.

What is wrong? Before moving to LUKS and LVM I didn't have that issue.