Subject: bug#27242: Fail to load LUKS encrypted rootfs, attempts to open luks device before it's ready.

From: Adam Van Ymeren <[email-masked]>
Date: Sun, 04 Jun 2017 18:06:15 -0400

On my machine when booting GuixSD, it fails to find the rootfs from the
initramfs.  It errors out attempting to find the luks device node.
Shortly after it errors is when I see the kernel dmesg output of the
nvme0 device becomining ready.

It looks like we need to wait for the device node to become ready, or
poll/sleep a few times if we fail to locate the device.

Thanks!
-Adam