Hmm this is weird, what actually requests the vfat module on your system? Can you please check your dracut configuration and the installed modules?

This must have spaces:
add_dracutmodules+=" uefi-lib "

uefi-lib though is only needed by "fcoe-uefi". So, unless you have a root on FCoE and need the UEFI configuration, "uefi-lib" is _not_ needed.


Regarding:
> dracut module 'vfat' cannot be found or installed.
There is no vfat dracut module! Only a kernel module. This looks like a configuration error.

What is the output of:

# egrep . -r /lib/dracut/dracut.conf.d/ /etc/dracut.conf.d

I agree, there is no vfat module, only the fat module, but adding that to the add_dracutmodules line has no effect.

I suspect, based on the error, that is has to do with the UEFI partition needing to be FAT32 for Hyper-V.

Here is the output:

[root@localhost 100.0.0.199 ~]# egrep . -r /lib/dracut/dracut.conf.d/ /etc/dracut.conf.d
/lib/dracut/dracut.conf.d/50-nss-softokn.conf:# turn on nss-softokn module
/lib/dracut/dracut.conf.d/50-nss-softokn.conf:add_dracutmodules+=" nss-softokn "
/lib/dracut/dracut.conf.d/01-dist.conf:# dracut config file customized for RedHat/Fedora.
/lib/dracut/dracut.conf.d/01-dist.conf:# i18n
/lib/dracut/dracut.conf.d/01-dist.conf:i18n_vars="/etc/sysconfig/keyboard:KEYTABLE-KEYMAP /etc/sysconfig/i18n:SYSFONT-FONT,FONTACM-FONT_MAP,FONT_UNIMAP"
/lib/dracut/dracut.conf.d/01-dist.conf:i18n_default_font="latarcyrheb-sun16"
/lib/dracut/dracut.conf.d/01-dist.conf:i18n_install_all="yes"
/lib/dracut/dracut.conf.d/01-dist.conf:stdloglvl=3
/lib/dracut/dracut.conf.d/01-dist.conf:sysloglvl=5
/lib/dracut/dracut.conf.d/01-dist.conf:install_optional_items+=" vi /etc/virc ps grep cat rm "
/lib/dracut/dracut.conf.d/01-dist.conf:prefix="/"
/lib/dracut/dracut.conf.d/01-dist.conf:systemdutildir=/usr/lib/systemd
/lib/dracut/dracut.conf.d/01-dist.conf:systemdsystemunitdir=/usr/lib/systemd/system
/lib/dracut/dracut.conf.d/01-dist.conf:systemdsystemconfdir=/etc/systemd/system
/lib/dracut/dracut.conf.d/01-dist.conf:udevdir=/usr/lib/udev
/lib/dracut/dracut.conf.d/01-dist.conf:hostonly="yes"
/lib/dracut/dracut.conf.d/01-dist.conf:hostonly_cmdline="no"
/lib/dracut/dracut.conf.d/01-dist.conf:early_microcode="yes"
/lib/dracut/dracut.conf.d/76-phys-port-name.conf:install_items+=" /usr/lib/udev/phys-port-name-gen "
/lib/dracut/dracut.conf.d/76-phys-port-name.conf:install_items+=" /usr/lib/udev/rules.d/76-phys-port-name.rules "
/lib/dracut/dracut.conf.d/01-microcode.conf:early_microcode="yes"
/lib/dracut/dracut.conf.d/02-rescue.conf:dracut_rescue_image="yes"

> I agree, there is no vfat module, only the fat module, but adding that to the
> add_dracutmodules line has no effect.

Oh, there _is_ a vfat kernel module.

$ modinfo vfat
filename:       /lib/modules/3.10.0-850.el7.x86_64/kernel/fs/fat/vfat.ko.xz
author:         Gordon Chaffee
description:    VFAT filesystem support
license:        GPL
alias:          fs-vfat

_But_ vfat is a _kernel_ module.. not a _dracut_ module. So it would be
add_drivers+=" <kernel_module> "
and _not_:
add_dracutmodules+=" <kernel_module> "

So, if you had in the past:
add_dracutmodules+=" vfat "
that would explain the error message:
dracut module 'vfat' cannot be found or installed.

Because it should have been
add_drivers+=" vfat "


What is your /etc/dracut.conf then?

The stock version of the dracut config on the Hyper-V Gen2 UEFI box is below:

[root@localhost ~]# cat /etc/dracut.conf
# PUT YOUR CONFIG HERE OR IN separate files named *.conf
# in /etc/dracut.conf.d
# SEE man dracut.conf(5)

# Sample dracut config file

#logfile=/var/log/dracut.log
#fileloglvl=6

# Exact list of dracut modules to use.  Modules not listed here are not going
# to be included.  If you only want to add some optional modules use
# add_dracutmodules option instead.
#dracutmodules+=""

# dracut modules to omit
#omit_dracutmodules+=""

# dracut modules to add to the default
#add_dracutmodules+=""

# additional kernel modules to the default
#add_drivers+=""

# list of kernel filesystem modules to be included in the generic initramfs
#filesystems+=""

# build initrd only to boot current hardware
#hostonly="yes"
#

# install local /etc/mdadm.conf
#mdadmconf="no"

# install local /etc/lvm/lvm.conf
#lvmconf="no"

# A list of fsck tools to install. If it's not specified, module's hardcoded
# default is used, currently: "umount mount /sbin/fsck* xfs_db xfs_check
# xfs_repair e2fsck jfs_fsck reiserfsck btrfsck". The installation is
# opportunistic, so non-existing tools are just ignored.
#fscks=""

# inhibit installation of any fsck tools
#nofscks="yes"

# mount / and /usr read-only by default
#ro_mnt="no"

# set the directory for temporary files
# default: /var/tmp
#tmpdir=/tmp


***********************************************************************

As you can see, neither the uefi-libs module, nor the vfat driver is added by the default configuration. As a result, unless modified manually in advance, the kernel upgrade will result in a dracut failure, and subsequently a failure to boot, unless the older kernel is selected.

What is in your /etc/kdump.conf ?

And the output of:

# journalctl -t dracut
# grep dracut /var/log/messages

[root@localhost ~]# cat /etc/kdump.conf
# This file contains a series of commands to perform (in order) in the kdump
# kernel after a kernel crash in the crash kernel(1st kernel) has happened.
#
# Directives in this file are only applicable to the kdump initramfs, and have
# no effect once the root filesystem is mounted and the normal init scripts are
# processed.
#
# Currently, only one dump target and path can be specified.  If the dumping to
# the configured target fails, the default action which can be configured via
# the "default" directive will be performed.
#
# Supported options:
#
# raw <partition>
#           - Will dd /proc/vmcore into <partition>.
#             Use persistent device names for partition devices,
#             such as /dev/vg/<devname>.
#
# nfs <nfs mount>
#           - Will mount nfs to <mnt>, and copy /proc/vmcore to
#             <mnt>/<path>/%HOST-%DATE/, supports DNS.
#
# ssh <user@server>
#           - Will scp /proc/vmcore to <user@server>:<path>/%HOST-%DATE/,
#             supports DNS.
#             NOTE: make sure the user has write permissions on the server.
#
# sshkey <path>
#           - Will use the sshkey to do ssh dump.
#             Specify the path of the ssh key to use when dumping
#             via ssh. The default value is /root/.ssh/kdump_id_rsa.
#
# <fs type> <partition>
#           - Will mount -t <fs type> <partition> <mnt>, and copy
#             /proc/vmcore to <mnt>/<path>/%DATE/.
#             NOTE: <partition> can be a device node, label or uuid.
#             It's recommended to use persistent device names
#             such as /dev/vg/<devname>.
#             Otherwise it's suggested to use label or uuid.
#
# path <path>
#           - "path" represents the file system path in which vmcore
#             will be saved.  If a dump target is specified in
#             kdump.conf, then "path" is relative to the specified
#             dump target.
#
#             Interpretation of "path" changes a bit if the user didn't
#             specify any dump target explicitly in kdump.conf.  In this
#             case, "path" represents the absolute path from root. The
#             dump target and adjusted path are arrived at automatically
#             depending on what's mounted in the current system.
#
#             Ignored for raw device dumps.  If unset, will use the default
#             "/var/crash".
#
# core_collector <command> <options>
#           - This allows you to specify the command to copy
#             the vmcore.  The default is makedumpfile, which on
#             some architectures can drastically reduce vmcore size.
#             See /sbin/makedumpfile --help for a list of options.
#             Note that the -i and -g options are not needed here,
#             as the initrd will automatically be populated with a
#             config file appropriate for the running kernel.
#             The default core_collector for raw/ssh dump is:
#             "makedumpfile -F -l --message-level 1 -d 31".
#             The default core_collector for other targets is:
#             "makedumpfile -l --message-level 1 -d 31".
#
#             "makedumpfile -F" will create a flattened vmcore.
#             You need to use "makedumpfile -R" to rearrange the dump data to
#             a normal dumpfile readable with analysis tools.  For example:
#             "makedumpfile -R vmcore < vmcore.flat".
#
#             For core_collector format details, you can refer to
#             kexec-kdump-howto.txt or kdump.conf manpage.
#
# kdump_post <binary | script>
#           - This directive allows you to run a executable binary
#             or script after the vmcore dump process terminates.
#             The exit status of the current dump process is fed to
#             the executable binary or script as its first argument.
#
# kdump_pre <binary | script>
#           - Works like the "kdump_post" directive, but instead of running
#             after the dump process, runs immediately before it.
#             Exit status of this binary is interpreted as follows:
#             0 - continue with dump process as usual
#             non 0 - reboot the system
#
# extra_bins <binaries | shell scripts>
#           - This directive allows you to specify additional binaries or
#             shell scripts to be included in the kdump initrd.
#             Generally they are useful in conjunction with a kdump_post
#             or kdump_pre binary or script which depends on these extra_bins.
#
# extra_modules <module(s)>
#           - This directive allows you to specify extra kernel modules
#             that you want to be loaded in the kdump initrd.
#             Multiple modules can be listed, separated by spaces, and any
#             dependent modules will automatically be included.
#
# default <reboot | halt | poweroff | shell | dump_to_rootfs>
#           - Action to perform in case dumping fails.
#             reboot:   Reboot the system.
#             halt:     Halt the system.
#             poweroff: Power down the system.
#             shell:    Drop to a bash shell.
#                       Exiting the shell reboots the system.
#             dump_to_rootfs:  Dump vmcore to rootfs from initramfs context and
#                       reboot. Useful when non-root dump target is specified.
#             The default option is "reboot".
#
# force_rebuild <0 | 1>
#           - By default, kdump initrd will only be rebuilt when necessary.
#             Specify 1 to force rebuilding kdump initrd every time when kdump
#             service starts.
#
# force_no_rebuild <0 | 1>
#           - By default, kdump initrd will be rebuilt when necessary.
#             Specify 1 to bypass rebuilding of kdump initrd.
#
#             force_no_rebuild and force_rebuild options are mutually
#             exclusive and they should not be set to 1 simultaneously.
#
# override_resettable <0 | 1>
#           - Usually an unresettable block device can't be a dump target.
#             Specifying 1 when you want to dump even though the block
#             target is unresettable
#             By default, it is 0, which will not try dumping destined to fail.
#
# dracut_args <arg(s)>
#           - Pass extra dracut options when rebuilding kdump initrd.
#
# fence_kdump_args <arg(s)>
#           - Command line arguments for fence_kdump_send (it can contain
#             all valid arguments except hosts to send notification to).
#
# fence_kdump_nodes <node(s)>
#           - List of cluster node(s) except localhost, separated by spaces,
#             to send fence_kdump notifications to.
#             (this option is mandatory to enable fence_kdump).
#

#raw /dev/vg/lv_kdump
#ext4 /dev/vg/lv_kdump
#ext4 LABEL=/boot
#ext4 UUID=03138356-5e61-4ab3-b58e-27507ac41937
#nfs my.server.com:/export/tmp
#ssh user.com
#sshkey /root/.ssh/kdump_id_rsa
path /var/crash
core_collector makedumpfile -l --message-level 1 -d 31
#core_collector scp
#kdump_post /var/crash/scripts/kdump-post.sh
#kdump_pre /var/crash/scripts/kdump-pre.sh
#extra_bins /usr/bin/lftp
#extra_modules gfs2
#default shell
#force_rebuild 1
#force_no_rebuild 1
#dracut_args --omit-drivers "cfg80211 snd" --add-drivers "ext2 ext3"
#fence_kdump_args -p 7410 -f auto -c 0 -i 10
#fence_kdump_nodes node1 node2

Give me a few, I need to go back to an un-patched system and do the kernel upgrade again to grab the other logs you asked for.

[root@localhost ~]# grep dracut /var/log/messages
Feb 14 13:40:06 localhost systemd[1]: Starting dracut cmdline hook...
Feb 14 13:40:06 localhost systemd: Started dracut cmdline hook.
Feb 14 13:40:06 localhost systemd: Starting dracut pre-udev hook...
Feb 14 13:40:06 localhost systemd: Started dracut pre-udev hook.
Feb 14 13:40:06 localhost systemd: Starting dracut initqueue hook...
Feb 14 13:40:07 localhost systemd: Started dracut initqueue hook.
Feb 14 13:40:07 localhost systemd: Starting dracut pre-pivot and cleanup hook...
Feb 14 13:40:07 localhost systemd: Started dracut pre-pivot and cleanup hook.
Feb 14 13:40:07 localhost systemd: Stopped dracut pre-pivot and cleanup hook.
Feb 14 13:40:07 localhost systemd: Stopping dracut pre-pivot and cleanup hook...
Feb 14 13:40:07 localhost systemd: Stopped dracut initqueue hook.
Feb 14 13:40:07 localhost systemd: Stopping dracut initqueue hook...
Feb 14 13:40:07 localhost systemd: Stopped dracut pre-udev hook.
Feb 14 13:40:07 localhost systemd: Stopping dracut pre-udev hook...
Feb 14 13:40:07 localhost systemd: Stopped dracut cmdline hook.
Feb 14 13:40:07 localhost systemd: Stopping dracut cmdline hook...
Feb 14 13:40:20 localhost dracut: dracut-
Feb 14 13:40:20 localhost dracut: Executing: /usr/sbin/dracut --hostonly --hostonly-cmdline --hostonly-i18n -o "plymouth dash resume ifcfg" -f /boot/initramfs-3.10.0-693.el7.x86_64kdump.img 3.10.0-693.el7.x86_64
Feb 14 13:40:21 localhost dracut: dracut module 'modsign' will not be installed, because command 'keyctl' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'busybox' will not be installed, because command 'busybox' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'ifcfg' will not be installed, because it's in the list to be omitted!
Feb 14 13:40:21 localhost dracut: dracut module 'plymouth' will not be installed, because it's in the list to be omitted!
Feb 14 13:40:21 localhost dracut: dracut module 'crypt' will not be installed, because command 'cryptsetup' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'dmraid' will not be installed, because command 'dmraid' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'mdraid' will not be installed, because command 'mdadm' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'multipath' will not be installed, because command 'multipath' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'cifs' will not be installed, because command 'mount.cifs' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsistart' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsi-iname' could not be found!
Feb 14 13:40:21 localhost dracut: 95nfs: Could not find any command of 'rpcbind portmap'!
Feb 14 13:40:21 localhost dracut: dracut module 'resume' will not be installed, because it's in the list to be omitted!
Feb 14 13:40:21 localhost dracut: dracut module 'modsign' will not be installed, because command 'keyctl' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'busybox' will not be installed, because command 'busybox' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'crypt' will not be installed, because command 'cryptsetup' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'dmraid' will not be installed, because command 'dmraid' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'mdraid' will not be installed, because command 'mdadm' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'multipath' will not be installed, because command 'multipath' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'cifs' will not be installed, because command 'mount.cifs' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsistart' could not be found!
Feb 14 13:40:21 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsi-iname' could not be found!
Feb 14 13:40:22 localhost dracut: 95nfs: Could not find any command of 'rpcbind portmap'!
Feb 14 13:40:22 localhost dracut: *** Including module: bash ***
Feb 14 13:40:22 localhost dracut: *** Including module: nss-softokn ***
Feb 14 13:40:22 localhost dracut: *** Including module: i18n ***
Feb 14 13:40:22 localhost dracut: *** Including module: network ***
Feb 14 13:40:22 localhost dracut: *** Including module: dm ***
Feb 14 13:40:22 localhost dracut: Skipping udev rule: 64-device-mapper.rules
Feb 14 13:40:22 localhost dracut: Skipping udev rule: 60-persistent-storage-dm.rules
Feb 14 13:40:22 localhost dracut: Skipping udev rule: 55-dm.rules
Feb 14 13:40:22 localhost dracut: *** Including module: kernel-modules ***
Feb 14 13:40:27 localhost dracut: *** Including module: lvm ***
Feb 14 13:40:27 localhost dracut: Skipping udev rule: 64-device-mapper.rules
Feb 14 13:40:27 localhost dracut: Skipping udev rule: 56-lvm.rules
Feb 14 13:40:27 localhost dracut: Skipping udev rule: 60-persistent-storage-lvm.rules
Feb 14 13:40:27 localhost dracut: *** Including module: rootfs-block ***
Feb 14 13:40:27 localhost dracut: *** Including module: terminfo ***
Feb 14 13:40:27 localhost dracut: *** Including module: udev-rules ***
Feb 14 13:40:27 localhost dracut: Skipping udev rule: 40-redhat-cpu-hotplug.rules
Feb 14 13:40:27 localhost dracut: Skipping udev rule: 91-permissions.rules
Feb 14 13:40:27 localhost dracut: *** Including module: biosdevname ***
Feb 14 13:40:27 localhost dracut: *** Including module: systemd ***
Feb 14 13:40:28 localhost dracut: *** Including module: usrmount ***
Feb 14 13:40:28 localhost dracut: *** Including module: base ***
Feb 14 13:40:28 localhost dracut: *** Including module: fs-lib ***
Feb 14 13:40:28 localhost dracut: *** Including module: kdumpbase ***
Feb 14 13:40:28 localhost dracut: *** Including module: shutdown ***
Feb 14 13:40:28 localhost dracut: *** Including modules done ***
Feb 14 13:40:28 localhost dracut: *** Installing kernel module dependencies and firmware ***
Feb 14 13:40:28 localhost dracut: *** Installing kernel module dependencies and firmware done ***
Feb 14 13:40:29 localhost dracut: *** Resolving executable dependencies ***
Feb 14 13:40:30 localhost dracut: *** Resolving executable dependencies done***
Feb 14 13:40:30 localhost dracut: *** Hardlinking files ***
Feb 14 13:40:30 localhost dracut: *** Hardlinking files done ***
Feb 14 13:40:30 localhost dracut: *** Stripping files ***
Feb 14 13:40:30 localhost dracut: *** Stripping files done ***
Feb 14 13:40:30 localhost dracut: *** Generating early-microcode cpio image contents ***
Feb 14 13:40:30 localhost dracut: *** Constructing GenuineIntel.bin ****
Feb 14 13:40:30 localhost dracut: *** Store current command line parameters ***
Feb 14 13:40:30 localhost dracut: *** Creating image file ***
Feb 14 13:40:30 localhost dracut: *** Creating microcode section ***
Feb 14 13:40:30 localhost dracut: *** Created microcode section ***
Feb 14 13:40:38 localhost dracut: *** Creating image file done ***
Feb 14 13:40:41 localhost dracut: *** Creating initramfs image file '/boot/initramfs-3.10.0-693.el7.x86_64kdump.img' done ***
Feb 14 14:16:05 localhost dracut: dracut-
Feb 14 14:16:05 localhost dracut: Executing: /sbin/dracut -f /boot/initramfs-3.10.0-693.17.1.el7.x86_64.img 3.10.0-693.17.1.el7.x86_64
Feb 14 14:16:05 localhost dracut: dracut module 'modsign' will not be installed, because command 'keyctl' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'busybox' will not be installed, because command 'busybox' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'crypt' will not be installed, because command 'cryptsetup' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'dmraid' will not be installed, because command 'dmraid' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'mdraid' will not be installed, because command 'mdadm' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'multipath' will not be installed, because command 'multipath' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'cifs' will not be installed, because command 'mount.cifs' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsistart' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsi-iname' could not be found!
Feb 14 14:16:05 localhost dracut: 95nfs: Could not find any command of 'rpcbind portmap'!
Feb 14 14:16:05 localhost dracut: dracut module 'modsign' will not be installed, because command 'keyctl' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'busybox' will not be installed, because command 'busybox' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'crypt' will not be installed, because command 'cryptsetup' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'dmraid' will not be installed, because command 'dmraid' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'mdraid' will not be installed, because command 'mdadm' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'multipath' will not be installed, because command 'multipath' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'cifs' will not be installed, because command 'mount.cifs' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsistart' could not be found!
Feb 14 14:16:05 localhost dracut: dracut module 'iscsi' will not be installed, because command 'iscsi-iname' could not be found!
Feb 14 14:16:05 localhost dracut: 95nfs: Could not find any command of 'rpcbind portmap'!
Feb 14 14:16:06 localhost dracut: *** Including module: bash ***
Feb 14 14:16:06 localhost dracut: *** Including module: nss-softokn ***
Feb 14 14:16:06 localhost dracut: *** Including module: i18n ***
Feb 14 14:16:06 localhost dracut: *** Including module: network ***
Feb 14 14:16:06 localhost dracut: *** Including module: ifcfg ***
Feb 14 14:16:06 localhost dracut: *** Including module: drm ***
Feb 14 14:16:07 localhost dracut: *** Including module: plymouth ***
Feb 14 14:16:08 localhost dracut: *** Including module: dm ***
Feb 14 14:16:08 localhost dracut: Skipping udev rule: 64-device-mapper.rules
Feb 14 14:16:08 localhost dracut: Skipping udev rule: 60-persistent-storage-dm.rules
Feb 14 14:16:08 localhost dracut: Skipping udev rule: 55-dm.rules
Feb 14 14:16:08 localhost dracut: *** Including module: kernel-modules ***
Feb 14 14:16:11 localhost dracut: *** Including module: lvm ***
Feb 14 14:16:11 localhost dracut: Skipping udev rule: 64-device-mapper.rules
Feb 14 14:16:11 localhost dracut: Skipping udev rule: 56-lvm.rules
Feb 14 14:16:11 localhost dracut: Skipping udev rule: 60-persistent-storage-lvm.rules
Feb 14 14:16:11 localhost dracut: *** Including module: resume ***
Feb 14 14:16:11 localhost dracut: *** Including module: rootfs-block ***
Feb 14 14:16:11 localhost dracut: *** Including module: terminfo ***
Feb 14 14:16:11 localhost dracut: *** Including module: udev-rules ***
Feb 14 14:16:11 localhost dracut: Skipping udev rule: 40-redhat-cpu-hotplug.rules
Feb 14 14:16:12 localhost dracut: Skipping udev rule: 91-permissions.rules
Feb 14 14:16:12 localhost dracut: *** Including module: biosdevname ***
Feb 14 14:16:12 localhost dracut: *** Including module: systemd ***
Feb 14 14:16:12 localhost dracut: *** Including module: usrmount ***
Feb 14 14:16:12 localhost dracut: *** Including module: base ***
Feb 14 14:16:12 localhost dracut: *** Including module: fs-lib ***
Feb 14 14:16:12 localhost dracut: *** Including module: shutdown ***
Feb 14 14:16:12 localhost dracut: *** Including modules done ***
Feb 14 14:16:12 localhost dracut: *** Installing kernel module dependencies and firmware ***
Feb 14 14:16:12 localhost dracut: *** Installing kernel module dependencies and firmware done ***
Feb 14 14:16:12 localhost dracut: *** Resolving executable dependencies ***
Feb 14 14:16:13 localhost dracut: *** Resolving executable dependencies done***
Feb 14 14:16:13 localhost dracut: *** Hardlinking files ***
Feb 14 14:16:13 localhost dracut: *** Hardlinking files done ***
Feb 14 14:16:13 localhost dracut: *** Stripping files ***
Feb 14 14:16:13 localhost dracut: *** Stripping files done ***
Feb 14 14:16:13 localhost dracut: *** Generating early-microcode cpio image contents ***
Feb 14 14:16:13 localhost dracut: *** Constructing GenuineIntel.bin ****
Feb 14 14:16:13 localhost dracut: *** Store current command line parameters ***
Feb 14 14:16:13 localhost dracut: *** Creating image file ***
Feb 14 14:16:13 localhost dracut: *** Creating microcode section ***
Feb 14 14:16:13 localhost dracut: *** Created microcode section ***
Feb 14 14:16:21 localhost dracut: *** Creating image file done ***
Feb 14 14:16:26 localhost dracut: *** Creating initramfs image file '/boot/initramfs-3.10.0-693.17.1.el7.x86_64.img' done ***

Created attachment 1396119 [details]
journalctl -t dracut

Output of "journalctl -t dracut" attached.

And of course it works now.....

OK, really not sure why it was failing in the past, but works now with the 3.10.0-693.17.1.el7.x86_64 kernel...

For sure, adding the uefi-libs module corrected it... Not sure what happened differently this time.

If it happens again, post the /var/log/messages and journalctl logs along with all the mentioned configuration files.