modules

local

• shells
• block devices
• filesystems
• utilities

Module	Description
base	Base module with required utilities
bash	bash (bash is preferred interpreter if there more of them available)
biosdevname	BIOS network device renaming
btrfs	btrfs
busybox	busybox
caps	drop capabilities before init
cms	mount z/VM CMS disks on s390
convertfs
crypt	encrypted LUKS filesystems and cryptsetup
crypt-gpg	GPG for crypto operations and SmartCards (may requires GPG keys)
crypt-loop	encrypted loopback devices (symmetric key)
dash	dash
debug	debug features
dm	device-mapper
dmraid	DMRAID arrays
dmsquash-live	SquashFS images
dmsquash-live-autooverlay
dmsquash-live-ntfs	SquashFS images located in NTFS filesystems
drm	kernel modules that provides DRM support
ecryptfs	ecryptfs
fips	Enforces FIPS security standard regulations
fs-lib	filesystem tools (including fsck.* and mount)
fstab-sys	Arranges for arbitrary partitions to be mounted before rootfs
i18n	Includes keymaps, console fonts, etc.
img-lib	Includes various tools for decompressing images
integrity	Extended Verification Module and ima-evm-utils
kernel-modules	kernel modules for root filesystems and other boot-time devices
kernel-modules-extra	extra out-of-tree kernel modules
lvm	LVM devices
lvmthinpool-monitor	Monitor LVM thinpool service
masterkey	masterkey that can be used to decrypt other keys and keyutils
mdraid	mdadm arrays
mksh	mksh
modsign	signing kernel modules, keyutils
multipath	multipath devices
nvdimm	non-volatile DIMM devices
overlayfs	overlayfs
ppcmac
qemu
lunmask	Masks LUN devices to select only ones which required to boot
plymouth	Includes boot splash support via plymouth
pollcdrom	Enables CD-ROM polling
rescue	Includes various utilities for rescue mode (such as ping, ssh, vi, fsck.*)
resume	Allows initramfs to resume from low-power state
rootfs-block	Arranges for the block device containing the rootfs to be mounted
securityfs	Arranges for the securityfs to be mounted early
selinux	selinux policy
shutdown	Sets up hooks to run on shutdown
syslog	Includes syslog capabilites
terminfo	Includes a terminfo file
udev-rules	Includes udev and some basic rules
uefi-lib	Includes UEFI tools
usrmount
virtfs	virtual filesystems (9p)
virtiofs	virtiofs
warpclock	Sets kernel's timezone and reset the system time if adjtime is set to LOCAL
watchdog	Includes watchdog devices management; works only if systemd not in use
watchdog-modules	Includes watchdog kernel modules to be loaded early in booting

network

• requires IP connectivity
• works with and without systemd

Module	Description
cifs	CIFS, cifs-utils
fcoe	Adds support for Fibre Channel over Ethernet (FCoE)
fcoe-uefi	Adds support for Fibre Channel over Ethernet (FCoE) in EFI mode
ifcfg	Includes /etc/sysconfig/network-scripts/* network scripts for network autogeneration
iscsi	Adds support for iSCSI devices
kernel-network-modules	Includes and loads kernel modules for network devices
livenet	Fetch live updates for SquashFS images
nbd	Network Block Device
network	Virtual module for network service providers
network-legacy	Includes legacy networking tools support
nfs	NFS, nfs-utils
nvmf	Adds support for NVMe over Fabrics devices
qemu-net	Includes network kernel modules for QEMU environment
ssh-client	Includes ssh and scp clients
url-lib	Includes curl and SSL certs

systemd

These modules would require including a version of systemd into initramfs.

Module	Description
bluetooth	Includes bluetooth devices support
dbus	Virtual module for dbus-broker or dbus-daemon
dbus-broker
dbus-daemon
dracut-systemd	INITRD_INTERFACE
fido2
lvmmerge	Merges lvm snapshots
memstrack	Includes memstrack for memory usage monitoring
pcsc	Adds support for PCSC Smart cards
pkcs11	Includes PKCS#11 libraries
rngd	Starts random generator serive on early boot
squash	Builds SquashFS initramfs
systemd	Adds systemd as early init initialization system
systemd-ac-power
systemd-ask-password
systemd-coredump
systemd-creds
systemd-hostnamed
systemd-initrd
systemd-integritysetup
systemd-journald
systemd-ldconfig
systemd-modules-load
systemd-pcrphase
systemd-portabled	PORTABLE_SERVICES
systemd-pstore
systemd-repart
systemd-resolved
systemd-sysctl
systemd-sysext
systemd-sysusers
systemd-timedated
systemd-timesyncd
systemd-tmpfiles
systemd-udevd
systemd-veritysetup
tpm2-tss	Adds support for TPM2 devices

systemd network

Module	Description
systemd-network-management	Adds network management for systemd
systemd-networkd
connman	connman
network-manager	NetworkManager

s390(x)

Module	Description
cio_ignore
cms
dasd
dasd_mod
dasd_rules
dcssblk
qeth_rules
zfcp	networking
zfcp_rules
zipl
znet	networking

test

Module	Description
test
test-makeroot
test-root