Bug#748805: Possible cause found

[Tristan Seligmann <mithrandi@mithrandi.net>]

I observed the following:

mithrandi@gondolin:~> grep btrfs /lib/modules/3.13-1-amd64/modules.dep
kernel/fs/btrfs/btrfs.ko: kernel/lib/raid6/raid6_pq.ko
kernel/lib/libcrc32c.ko kernel/crypto/xor.ko
mithrandi@gondolin:~> grep btrfs /lib/modules/3.14-1-amd64/modules.dep
kernel/fs/btrfs/btrfs.ko: kernel/lib/raid6/raid6_pq.ko kernel/crypto/xor.ko

I added "libcrc32c" to /etc/initramfs-tools/modules and reran
update-initramfs; this seems to have solved the problem.
-- 
mithrandi, i Ainil en-Balandor, a faer Ambar