setup-storage does not create crypttab

[Andreas Heinlein]

I have defined encrypted swap and tmp like this

disk_config lvm
vg vg1 disk1.6
vg1-swap	swap:encrypt 	2048	swap	sw
vg1-tmp		/tmp:encrypt	1024	ext2	rw
...

This works during setup, two device-mapper devices crypt_dev_vg1_tmp and crypt_dev_vg1_swap are created and written to fstab, but no crypttab is generated. I am doing this now with a script, but from taking a look at setup-storage source it looks like it shoud create a correct crypttab, right?

Andreas