[gentoo-genkernel] RFC: aufs and modules support

[Rick \\\"Zero_Chaos\\\" Farina]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

It pains me to drop this patch in here, because it's like kicking a
child out of the house, but it's time to reintegrate into gentoo.

I've yet to test this exact version (takes a long time to build my
livecd). Please look over this code while I'm waiting to test, but I
know the aufs stuff works and I *believe* I fixed the modules support.

Let the abuse begin! :-)

Thanks!
Zero

diff --git a/defaults/initrd.defaults b/defaults/initrd.defaults
index 73fe4c9..aa265bc 100755
- --- a/defaults/initrd.defaults
+++ b/defaults/initrd.defaults
@@ -73,6 +73,7 @@ CDROOT_TYPE='auto'
 NEW_ROOT='/newroot'
 CDROOT_PATH='/mnt/cdrom'
 CONSOLE='/dev/console'
+MODULESD="mnt/cdrom"

 LOOPS='/livecd.loop /zisofs /livecd.squashfs /image.squashfs
/livecd.gcloop'

diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts
index 082d44d..e0de42f 100755
- --- a/defaults/initrd.scripts
+++ b/defaults/initrd.scripts
@@ -207,6 +207,192 @@ mount_sysfs() {
 	[ ${ret} -eq 0 ] || bad_msg "Failed to mount /sys!"
 }

+# Insert a directory tree $2 to an union specified by $1
+# Top-level read-write branch is specified by it's index 0
+# $1 = union absolute path (starting with /)
+# $2 = path to data directory
+#
+union_insert_dir() {
+	# Always mount it over the precedent (add:1:)
+	mount -n -o remount,add:1:$2=rr aufs $1
+	if [ $? = '0' ]
+	then
+		good_msg "Addition of $2 to $1 successful"
+	fi
+}
+
+# Insert all modules found in $1, usually mnt/cdrom
+# added to allow users to add their own apps.
+union_insert_modules() {
+	for module in `ls ${NEW_ROOT}/$1/modules/*.mo 2>/dev/null| sort`
+	do
+		mkdir -p ${MEMORY}/modules/`basename ${module} .mo`
+		union_insert_dir $UNION ${MEMORY}/modules/`basename ${module} .mo`
+	done
+	for module in `ls ${NEW_ROOT}/$1/modules/*.lzm 2>/dev/null| sort`
+	do
+		mkdir -p ${MEMORY}/modules/`basename ${module} .lzm`
+		mount -o loop,ro ${module} ${MEMORY}/modules/`basename ${module} .lzm`
+		union_insert_dir $UNION ${MEMORY}/modules/`basename ${module} .lzm`
+	done
+}
+
+# Function to create an ext2 fs on $CHANGESDEV, $CHANGESMNT mountpoint
+create_changefs() {
+	local size
+	while [ 1 ]
+	do
+		read -p '<< Size of file (Enter for default 256 Mb): ' size
+		if [ -z "$size" ]; then
+			let size=256
+		fi
+		let size="$size"
+		if [ $size -lt 16 ]
+		then
+			bad_msg "Please give a size of at least 16 Mb"
+		else
+			dd if=/dev/zero of=$CHANGESMNT/livecd.aufs bs=1M count=$size
+			if [ $? = '0' ]
+			then
+				good_msg "Creation of livecd.aufs, $size Mb on $CHANGESDEV
successful, formatting it ext2"
+				mke2fs -F $CHANGESMNT/livecd.aufs
+				break
+			else
+				rm -f $CHANGESMNT/livecd.aufs
+				bad_msg "Unable to create livecd.aufs on $CHANGESDEV of $size Mb"
+				bad_msg "Please give a size of at least 16 Mb"
+				bad_msg "Also check if your disk is full or read-only ?"
+				read -p '<< Type "a" to abort, anything else to continue : ' doabort
+				if [ "$doabort" = "a" ]; then
+					return 1
+				fi
+			fi
+		fi
+	done
+	return 0
+}
+
+setup_aufs() {
+	if [ "${USE_AUFS_NORMAL}" -eq '1' ]
+	then
+		# Directory used for rw changes in union mount filesystem
+		UNION=/union
+		MEMORY=/memory
+		# Mountpoint for the changesdev
+		CHANGESMNT=$NEW_ROOT/mnt/changesdev
+		if [ -z "$UID" ]
+		then
+			CHANGES=$MEMORY/aufs_changes/default
+		else
+			CHANGES=$MEMORY/aufs_changes/$UID
+		fi
+
+		mkdir -p ${MEMORY}
+		mkdir -p ${UNION}
+		mkdir -p ${CHANGESMNT}
+		for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd
mnt/gentoo sys
+		do
+			mkdir -p "${NEW_ROOT}/${i}"
+			chmod 755 "${NEW_ROOT}/${i}"
+		done
+		[ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
+		[ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console
c 5 1
+
+		bootstrapCD
+		if [ -n "${AUFS}" ]
+		then
+			if [ "${AUFS}" = "detect" ]
+			then
+				CHANGESMNT="${NEW_ROOT}/mnt/cdrom"
+				CHANGESDEV=${REAL_ROOT}
+			else
+				CHANGESDEV=${AUFS}
+				good_msg "mounting $CHANGESDEV to $MEMORY for aufs support"
+		#		mount -t auto $CHANGESDEV $MEMORY
+				mount -t auto $CHANGESDEV $CHANGESMNT
+				ret=$?
+				if [ "${ret}" -ne 0 ]
+				then
+					bad_msg "mount of $CHANGESDEV failed falling back to ramdisk based
aufs"
+					unset AUFS
+				fi
+			fi
+			# Check and attempt to create the changesfile
+			if [ ! -e $CHANGESMNT/livecd.aufs ] && [ -n "${AUFS}" ]
+			then
+				create_changefs
+				mount -t auto $CHANGESMNT/livecd.aufs $MEMORY
+			elif [ -n "${AUFS}" ]
+			then
+				local nbpass=0
+				while [ 1 ]
+				do
+					mount -t auto $CHANGESMNT/livecd.aufs $MEMORY
+					ret=$?
+					if [ "${ret}" -ne 0 ]
+					then
+						if [ $nbpass -eq 0 ]
+						then
+							bad_msg "mounting of changes file failed, Running e2fsck"
+							e2fsck $CHANGESMNT/livecd.aufs
+							nbpass=$(($nbpass + 1))
+						else
+							bad_msg "mount of $CHANGESDEV failed falling back to ramdisk
based aufs"
+							bad_msg "your livecd.aufs might be messed up, and I couldn't fix it"
+							bad_msg "moving livecd.aufs to livecd.aufs.bad"
+							mv $CHANGESMNT/livecd.aufs $CHANGESMNT/livecd.aufs.bad
+							bad_msg "try to fix it yourself with e2fsck later on, sorry for
disturbing"
+							break
+						fi
+					else
+						if [ $nbpass -eq 1 ]
+						then
+							good_msg "e2fsck seemed successful. Please check your files
after bootup"
+						fi
+						break
+					fi
+				done
+				if [ -f ${MEMORY}/.doclean.sh ]
+				then
+					good_msg "finishing the permanent changes cleanup"
+					. ${MEMORY}/.doclean.sh
+					rm ${MEMORY}/.doclean.sh
+				fi
+			fi
+			# mount tmpfs only in the case when changes= boot parameter was
+			# empty or we were not able to mount the storage device
+			if [ "${CDROOT}" -eq '1' -a ! -f ${CHANGESMNT}/livecd.aufs  ]
+			then
+				umount $MEMORY
+				bad_msg "failed to find livecd.aufs file on $CHANGESDEV"
+				bad_msg "create an ext2 livecd.aufs file on this device if you wish
to use it for aufs"
+				bad_msg "falling back to ramdisk based aufs for safety"
+				mount -t tmpfs tmpfs $MEMORY
+				XINO=$MEMORY
+			else
+				XINO=$MEMORY/xino
+				mkdir -p $XINO
+				mount -t tmpfs tmpfs $XINO
+			fi
+		else
+			good_msg "Mounting ramdisk to $MEMORY for aufs support..."
+			mount -t tmpfs tmpfs $MEMORY
+			XINO=$MEMORY
+		fi
+
+		mkdir -p $CHANGES
+		mount -t aufs -n -o
nowarn_perm,udba=none,xino=$XINO/.aufs.xino,br:$CHANGES=rw aufs ${UNION}
+		ret=$?
+		if [ "${ret}" -ne 0 ]
+		then
+			bad_msg "Can't setup union ${UNION} in directory!"
+			USE_AUFS_NORMAL=0
+		fi
+	else
+		USE_AUFS_NORMAL=0
+	fi
+}
+
 findnfsmount() {
 	if [ "${IP}" != '' ] || busybox udhcpc -n -T 15 -q
 	then
diff --git a/defaults/linuxrc b/defaults/linuxrc
index f434339..5e2d1b8 100755
- --- a/defaults/linuxrc
+++ b/defaults/linuxrc
@@ -229,6 +229,38 @@ do
 		aufs)
 			USE_AUFS_NORMAL=1
 		;;
+		aufs\=*)
+			USE_AUFS_NORMAL=1
+			CMD_AUFS=`parse_opt "${x}"`
+			echo ${CMD_AUFS}|grep , >/dev/null 2>&1
+			if [ "$?" -eq '0' ]
+			then
+				UID=`echo ${CMD_AUFS#*,}`
+				AUFS=`echo ${CMD_AUFS%,*}`
+			else
+				AUFS=${CMD_AUFS}
+			fi
+		;;
+		changes\=*)
+			USE_AUFS_NORMAL=1
+			CMD_AUFS=`parse_opt "${x}"`
+			echo ${CMD_AUFS}|grep , >/dev/null 2>&1
+			if [ "$?" -eq '0' ]
+			then
+				UID=`echo ${CMD_AUFS#*,}`
+				AUFS=`echo ${CMD_AUFS%,*}`
+			else
+				AUFS=${CMD_AUFS}
+			fi
+		;;
+		persistent)
+			USE_AUFS_NORMAL=1
+			AUFS="detect"
+		;;
+		# Allow user to specify the modules location
+		modules\=*)
+			MODULESD=`parse_opt "${x}"`
+		;;
 		unionfs)
 			if [ ! -x /sbin/unionfs ]
 			then
@@ -406,17 +438,23 @@ rundebugshell

 if [ "${CDROOT}" = '1' ]
 then
- -	good_msg "Making tmpfs for ${NEW_ROOT}"
- -	mount -n -t tmpfs tmpfs "${NEW_ROOT}"
+	setup_aufs
+	if [ "${USE_AUFS_NORMAL}" -eq '1' ]
+	then
+		CHROOT=${UNION}
+	else
+		CHROOT=${NEW_ROOT}
+		good_msg "Making tmpfs for ${NEW_ROOT}"
+		mount -t tmpfs tmpfs ${NEW_ROOT}

- -	for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
- -	do
- -		mkdir -p "${NEW_ROOT}/${i}"
- -		chmod 755 "${NEW_ROOT}/${i}"
- -	done
- -	[ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
- -	[ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
- -	[ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console
c 5 1
+		for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd
mnt/gentoo sys
+		do
+			mkdir -p "${NEW_ROOT}/${i}"
+			chmod 755 "${NEW_ROOT}/${i}"
+		done
+		[ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
+		[ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console
c 5 1
+	fi

 	# For SGI LiveCDs ...
 	if [ "${LOOPTYPE}" = "sgimips" ]
@@ -432,7 +470,7 @@ then
 		[ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 	fi

- -	if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
+	if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
&& [ "${USE_AUFS_NORMAL}" != '1' ]
 	then
 		bootstrapCD
 	fi
@@ -748,7 +786,23 @@ then
 		fi
 	fi

+	if [ "${USE_AUFS_NORMAL}" -eq '1' ]
+	then
+		union_insert_dir ${UNION} ${NEW_ROOT}/${FS_LOCATION}

+		# Make sure fstab notes livecd is mounted ro.  Makes system skip
remount which fails on aufs dirs.
+		sed -e 's|\(.*\s/\s*tmpfs\s*\)defaults\(.*\)|\1defaults,ro\2|'
/${UNION}/etc/fstab /${UNION}/etc/fstab.new
+		mv /${UNION}/etc/fstab.new /${UNION}/etc/fstab
+		warn_msg "Adding all modules in $MODULESD/modules/"
+		if [ "${MODULESD}" = "mnt/cdrom" ]
+		then
+			union_insert_modules mnt/cdrom
+		else
+			mkdir ${NEW_ROOT}/mnt/modulesd
+			mount "${MODULESD}" ${NEW_ROOT}/mnt/modulesd
+			union_insert_modules ${NEW_ROOT}/mnt/modulesd
+		fi
+	fi

 	# Unpacking additional packages from NFS mount
 	# This is useful for adding kernel modules to /lib
@@ -771,57 +825,57 @@ then
 	then
 		setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 		CHROOT=/union
- -	elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
- -
- -	good_msg "Copying read-write image contents to tmpfs"
- -	# Copy over stuff that should be writable
- -	(cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
|| {
- -		bad_msg "Copying failed, dropping into a shell."
- -		do_rundebugshell
- -	}
- -
- -	# Now we do the links.
- -	for x in ${ROOT_LINKS}
- -	do
- -		if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
+	else
+	#XXX this hunk confuses me more than a little and needs to be
rewritten sanely at some point
+		if [ ! "${USE_AUFS_NORMAL}" -eq '1' ]
 		then
- -			ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
- -		else
- -			# List all subdirectories of x
- -			find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while
read directory
- -			do
- -				# Strip the prefix of the FS_LOCATION
- -				directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
+			good_msg "Copying read-write image contents to tmpfs"
+			# Copy over stuff that should be writable
+			(cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")

- -				# Skip this directory if we already linked a parent directory
- -				if [ "${current_parent}" != '' ]; then
- -					var=$(echo "${directory}" | grep "^${current_parent}")
- -					if [ "${var}" != '' ]; then
- -						continue
- -					fi
- -				fi
- -				# Test if the directory exists already
- -				if [ -e "/${NEW_ROOT}/${directory}" ]
+			# Now we do the links.
+			for x in ${ROOT_LINKS}
+			do
+				if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 				then
- -					# It does exist, link all the individual files
- -					for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
+					ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
+				else
+					# List all subdirectories of x
+					find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while
read directory
 					do
- -					if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] &&
[ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
- -							ln -s "/${FS_LOCATION}/${directory}/${file}"
"${directory}/${file}" 2/dev/null
+						# Strip the prefix of the FS_LOCATION
+						directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
+
+						# Skip this directory if we already linked a parent directory
+						if [ "${current_parent}" != '' ]; then
+							var=`echo "${directory}" | grep "^${current_parent}"`
+							if [ "${var}" != '' ]; then
+								continue
+							fi
+						fi
+						# Test if the directory exists already
+						if [ -e "/${NEW_ROOT}/${directory}" ]
+						then
+							# It does exist, link all the individual files
+							for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
+							do
+								if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ]
&& [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
+									ln -s "/${FS_LOCATION}/${directory}/${file}"
"${directory}/${file}" 2/dev/null
+								fi
+							done
+						else
+							# It does not exist, make a link to the livecd
+							ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
+							current_parent="${directory}"
 						fi
 					done
- -				else
- -					# It does not exist, make a link to the livecd
- -					ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
- -					current_parent="${directory}"
 				fi
 			done
- -		fi
- -	done
- -
- -	mkdir initramfs proc tmp sys run 2>/dev/null
- -	chmod 1777 tmp
+			mkdir initramfs proc tmp sys 2>/dev/null
+			chmod 1777 tmp

+		fi
+	#XXX: end extremely confusing hunk
 	fi

 	#UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
@@ -842,13 +896,18 @@ else
 		setup_unionfs /union_changes ${NEW_ROOT}
 		mkdir -p ${UNION}/tmp/.initrd
 	fi
+	if [ "${USE_AUFS_NORMAL}" -eq '1' ]
+	then
+		union_insert_dir ${UNION} ${NEW_ROOT}
+		mkdir -p ${UNION}/tmp/.initrd
+	fi
 fi

 # Mount the additional things as required by udev & systemd
 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 	fslist=$(get_mounts_list)
 else
- -	fslist="/usr"
+	fslist="/usr"
 fi

 for fs in $fslist; do
@@ -886,6 +945,35 @@ fi

 verbose_kmsg

+if [ "${USE_AUFS_NORMAL}" -eq '1' ]
+then
+	mkdir -p /${CHROOT}/.unions/memory 2>/dev/null
+	mount -o move /memory /${CHROOT}/.unions/memory || echo '*: Failed to
move aufs /memory into the system root!'
+	for i in tmp var/tmp mnt/gentoo mnt/livecd
+	do
+		mkdir -p ${CHROOT}/$i
+		chmod 755 ${CHROOT}/$i
+	done
+	# This will prevent from putting junk on the CHANGESDEV
+	mkdir -p ${CHROOT}/usr/portage/distfiles
+	mount -t tmpfs tmpfs ${CHROOT}/var/tmp
+	mount -t tmpfs tmpfs ${CHROOT}/tmp
+	mount -t tmpfs tmpfs ${CHROOT}/usr/portage/distfiles
+	warn_msg "/tmp /var/tmp /usr/portage/distfiles are mounted in ram"
+	warn_msg "consider saving important files elsewhere..."
+	read -t 3 UNUSEDVAL
+	mount -o bind ${NEW_ROOT}/mnt/cdrom ${CHROOT}/mnt/cdrom
+	mount -o bind ${NEW_ROOT}/mnt/livecd ${CHROOT}/mnt/livecd
+	if [ -e $MEMORY/keyboard -a "${CDROOT}" -eq '1' ]
+	then
+		cp $MEMORY/keyboard ${CHROOT}/etc/sysconfig/keyboard
+	elif [ -e /etc/sysconfig/keyboard -a "${CDROOT}" -eq '1' ]
+	then
+		mkdir -p ${NEW_ROOT}/etc/sysconfig/
+		cp /etc/sysconfig/keyboard ${CHROOT}/etc/sysconfig/keyboard
+	fi
+fi
+
 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"

 cd "${CHROOT}"
diff --git a/gen_compile.sh b/gen_compile.sh
index cbd3432..cdd4643 100755
- --- a/gen_compile.sh
+++ b/gen_compile.sh
@@ -565,6 +565,58 @@ compile_device_mapper() {
 	compile_lvm
 }

+compile_e2fstools() {
+	if [ -f "${E2FSPROGS_BINCACHE}" ]
+	then
+		print_info 1 "e2fstools: >Using cache"
+	else
+		[ ! -f "${E2FSPROGS_SRCTAR}" ] &&
+			gen_die "Could not find e2fsprogs source tarball:
${E2FSPROGS_SRCTAR}. Please place it there, or place another version,
changing /etc/genkernel.conf as necessary!"
+		cd "${TEMP}"
+		rm -rf "${E2FSPROGS_DIR}"
+		tar -zxpf "${E2FSPROGS_SRCTAR}"
+		[ ! -d "${E2FSPROGS_DIR}" ] &&
+			gen_die "e2fsprogs directory ${E2FSPROGS_DIR} invalid"
+		cd "${E2FSPROGS_DIR}"
+		print_info 1 'e2fsprogs: >Configuring...'
+		LDFLAGS="-static" ./configure >${LOGFILE} 2>&1 ||
+			gen_die 'Configuring e2fsprogs failed!'
+		print_info 1 'e2fsprogs: >Compiling libs...'
+		#MAKE=${UTILS_MAKE} compile_generic "" ""
+		make libs >${LOGFILE} 2>&1 ||
+			gen_die 'Compiling e2fsprogs libs failed!'
+		print_info 1 'e2fsprogs: >Compiling e2fsck...'
+		cd "${TEMP}/${E2FSPROGS_DIR}/e2fsck"
+		make e2fsck.static >${LOGFILE} 2>&1 ||
+			gen_die 'Compiling static e2fsck failed!'
+		cd "${TEMP}/${E2FSPROGS_DIR}/misc"
+		print_info 1 'e2fsprogs: >Compiling mke2fs...'
+		make mke2fs.static >${LOGFILE} 2>&1 ||
+			gen_die 'Compiling static mke2fs failed!'
+		cd "${TEMP}/${E2FSPROGS_DIR}"
+		print_info 1 'e2fsprogs: >Copying to cache...'
+		[ -f "${TEMP}/${E2FSPROGS_DIR}/misc/mke2fs.static" ] ||
+			gen_die 'mke2fs executable does not exist!'
+		[ -f "${TEMP}/${E2FSPROGS_DIR}/e2fsck/e2fsck.static" ] ||
+			gen_die 'e2fsck executable does not exist!'
+		strip "${TEMP}/${E2FSPROGS_DIR}/misc/mke2fs.static"
"${TEMP}/${E2FSPROGS_DIR}/e2fsck/e2fsck.static" ||
+			gen_die 'Could not strip e2fs binaries!'
+
+		mkdir "${TEMP}/e2fsprogs"
+		mkdir "${TEMP}/e2fsprogs/sbin"
+		install -m 0755 -s misc/mke2fs.static "${TEMP}/e2fsprogs/sbin/mke2fs"
+		install -m 0755 -s e2fsck/e2fsck.static "${TEMP}/e2fsprogs/sbin/e2fsck"
+		print_info 1 '      >Copying to bincache...'
+		cd "${TEMP}/e2fsprogs"
+		/bin/tar -cjf "${E2FSPROGS_BINCACHE}" sbin/ ||
+			gen_die 'Could not create binary cache'
+
+		cd "${TEMP}"
+		rm -rf "${TEMP}/e2fsprogs" /dev/null
+		rm -rf "${E2FSPROGS_DIR}" /dev/null
+	fi
+}
+
 compile_fuse() {
 	if [ ! -f "${FUSE_BINCACHE}" ]
 	then
diff --git a/gen_determineargs.sh b/gen_determineargs.sh
index 7f352f8..a0563fd 100755
- --- a/gen_determineargs.sh
+++ b/gen_determineargs.sh
@@ -144,6 +144,7 @@ determine_real_args() {
 	MDADM_BINCACHE=`cache_replace "${MDADM_BINCACHE}"`
 	DMRAID_BINCACHE=`cache_replace "${DMRAID_BINCACHE}"`
 	ISCSI_BINCACHE=`cache_replace "${ISCSI_BINCACHE}"`
+	E2FSPROGS_BINCACHE=`cache_replace "${E2FSPROGS_BINCACHE}"`
 	BLKID_BINCACHE=`cache_replace "${BLKID_BINCACHE}"`
 	FUSE_BINCACHE=`cache_replace "${FUSE_BINCACHE}"`
 	UNIONFS_FUSE_BINCACHE=`cache_replace "${UNIONFS_FUSE_BINCACHE}"`
diff --git a/gen_initramfs.sh b/gen_initramfs.sh
index ac90830..75bb47f 100755
- --- a/gen_initramfs.sh
+++ b/gen_initramfs.sh
@@ -127,6 +127,26 @@ append_busybox() {
 	rm -rf "${TEMP}/initramfs-busybox-temp" /dev/null
 }

+# Used to add e2fs file making inside initramfs for aufs changes saving
+append_e2fstools(){
+	if [ -d "${TEMP}/initramfs-e2fsprogs-temp" ]
+	then
+		rm -r "${TEMP}/initramfs-e2fsprogs-temp/"
+	fi
+	#print_info 1 'E2FSTOOLS: Adding support (compiling binaries)...'
+	# Using different name for blkid compatibility
+	#compile_e2fstools
+	cd ${TEMP}
+	mkdir -p "${TEMP}/initramfs-e2fsprogs-temp/"
+	#XXX: do we want to add an if statement here or just include it? I say
include it...
+	copy_binaries "${TEMP}"/initramfs-e2fsprogs-temp/ /sbin/{e2fsck,mke2fs}
+	#/bin/tar -jxpf "${E2FSPROGS_BINCACHE}" -C
"${TEMP}/initramfs-e2fsprogs-temp/" ||
+	#	gen_die "Could not extract e2fsprogs binary cache!"
+	cd "${TEMP}/initramfs-e2fsprogs-temp/"
+	find . -print | cpio ${CPIO_ARGS} --append -F "${CPIO}"
+	rm -rf "${TEMP}/initramfs-e2fsprogs-temp" /dev/null
+}
+
 append_blkid(){
 	if [ -d "${TEMP}/initramfs-blkid-temp" ]
 	then
@@ -741,6 +762,7 @@ create_initramfs() {
 	append_data 'base_layout'
 	append_data 'auxilary' "${BUSYBOX}"
 	append_data 'busybox' "${BUSYBOX}"
+	append_data 'e2fstools'
 	append_data 'lvm' "${LVM}"
 	append_data 'dmraid' "${DMRAID}"
 	append_data 'iscsi' "${ISCSI}"
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