Outputs for udev exit failed rc=2

Output of cat -n /usr/share/initramfs-tools/scripts/init-bottom/udev:

 1    #!/bin/sh -e
 2
 3    PREREQS=""
 4
 5    prereqs() { echo "$PREREQS"; }
 6
 7    case "$1" in
 8        prereqs)
 9        prereqs
 10        exit 0
 11        ;;
 12    esac
 13
 14    # we cannot properly synthesize LVM LV change events with udevadm trigger, so
 15    # if we use LVM, we need to let it finish; otherwise we get missing LV symlinks
 16    # (LP #1185394)
 17    if [ -x /sbin/vgchange ]; then
 18        udevadm settle --timeout=121 || true
 19    fi
 20
 21    # Stop udevd, we'll miss a few events while we run init, but we catch up
 22    udevadm control --timeout=121 --exit || \
 23                echo "udev exit failed -- rc=$?"
 24
 25    # move the /dev tmpfs to the rootfs
 26    mount -n -o move /dev ${rootmnt}/dev
 27
 28    # create a temporary symlink to the final /dev for other initramfs scripts
 29    rm -rf /dev
 30    ln -s ${rootmnt}/dev /dev
 31

Output of lsb_release -a:

No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:    14.04
Codename:    trusty

Out of uname -a:

Linux ethanbmnz-pc 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux