diff --git a/CMakeLists.txt b/CMakeLists.txt
index e9ac967ded..38fe1d190a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -205,7 +205,7 @@ add_custom_target(tests)
 
 if(DEVELOPER_MODE)
 	add_flag(-Werror) # XXX: WX for windows
-	find_program(CLANG_FORMAT NAMES clang-format clang-format-8.0)
+	find_program(CLANG_FORMAT NAMES clang-format clang-format-8 clang-format-8.0)
 	set(CLANG_FORMAT_REQUIRED "8.0")
 	if(CLANG_FORMAT)
 		get_program_version(${CLANG_FORMAT} CLANG_FORMAT_VERSION)
diff --git a/doc/libpmemobj++.Doxyfile.in b/doc/libpmemobj++.Doxyfile.in
index db51627e58..bb8de1d952 100644
--- a/doc/libpmemobj++.Doxyfile.in
+++ b/doc/libpmemobj++.Doxyfile.in
@@ -73,7 +73,12 @@ HIDE_UNDOC_CLASSES = YES
 # standard output by doxygen. If QUIET is set to YES this implies that the
 # messages are off.
 
-QUIET = YES
+QUIET = NO
+
+# The COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
+# in which the alphabetical index list will be split.
+
+COLS_IN_ALPHA_INDEX = 1
 
 #---------------------------------------------------------------------------
 # Configuration options related to the input files
diff --git a/travis.yml b/travis.yml
index ef7d39221c..dba8b01e63 100644
--- a/travis.yml
+++ b/travis.yml
@@ -9,16 +9,16 @@ services:
 
 env:
   matrix:
-    - TYPE=debug OS=fedora OS_VER=30 PUSH_IMAGE=1 AUTO_DOC_UPDATE=1
-    - TYPE=debug OS=ubuntu OS_VER=19.04 PUSH_IMAGE=1
-    - TYPE=debug OS=ubuntu OS_VER=19.04 COVERAGE=1
-    - TYPE=release OS=fedora OS_VER=30
-    - TYPE=release OS=ubuntu OS_VER=19.04
-    - TYPE=valgrind OS=ubuntu OS_VER=19.04
-    - TYPE=memcheck_drd OS=ubuntu OS_VER=19.04
-    - TYPE=coverity OS=ubuntu OS_VER=19.04
-    - TYPE=package OS=ubuntu OS_VER=19.04
-    - TYPE=package OS=fedora OS_VER=30
+    - TYPE=debug OS=fedora OS_VER=32 PUSH_IMAGE=1 AUTO_DOC_UPDATE=1
+    - TYPE=debug OS=ubuntu OS_VER=20.04 PUSH_IMAGE=1
+    - TYPE=debug OS=ubuntu OS_VER=20.04 COVERAGE=1
+    - TYPE=release OS=fedora OS_VER=32
+    - TYPE=release OS=ubuntu OS_VER=20.04
+    - TYPE=valgrind OS=ubuntu OS_VER=20.04
+    - TYPE=memcheck_drd OS=ubuntu OS_VER=20.04
+    - TYPE=coverity OS=ubuntu OS_VER=20.04
+    - TYPE=package OS=ubuntu OS_VER=20.04
+    - TYPE=package OS=fedora OS_VER=32
 
 before_install:
   - echo $TRAVIS_COMMIT_RANGE
diff --git a/utils/docker/images/Dockerfile.fedora-30 b/utils/docker/images/Dockerfile.fedora-32
similarity index 95%
rename from utils/docker/images/Dockerfile.fedora-30
rename to utils/docker/images/Dockerfile.fedora-32
index 5475f4ae57..c8a16ff02e 100644
--- a/utils/docker/images/Dockerfile.fedora-30
+++ b/utils/docker/images/Dockerfile.fedora-32
@@ -35,7 +35,7 @@
 #
 
 # Pull base image
-FROM fedora:30
+FROM fedora:32
 MAINTAINER marcin.slusarz@intel.com
 
 # Additional parameters to build docker without building components
@@ -51,6 +51,7 @@ RUN dnf update -y \
 	bash-completion \
 	clang \
 	cmake \
+	daxctl-devel \
 	doxygen \
 	gcc \
 	gdb \
@@ -65,6 +66,7 @@ RUN dnf update -y \
 	make \
 	man \
 	ncurses-devel \
+	ndctl-devel \
 	open-sans-fonts \
 	passwd \
 	perl-Text-Diff \
@@ -80,10 +82,6 @@ RUN dnf update -y \
 	xmlto \
  && dnf clean all
 
-# Install libndctl
-COPY install-libndctl.sh install-libndctl.sh
-RUN ./install-libndctl.sh fedora
-
 # Install valgrind
 COPY install-valgrind.sh install-valgrind.sh
 RUN ./install-valgrind.sh
@@ -102,7 +100,7 @@ USER $USER
 
 # Set required environment variables
 ENV OS fedora
-ENV OS_VER 30
+ENV OS_VER 32
 ENV PACKAGE_MANAGER rpm
 ENV NOTTY 1
 
diff --git a/utils/docker/images/Dockerfile.ubuntu-19.04 b/utils/docker/images/Dockerfile.ubuntu-20.04
similarity index 95%
rename from utils/docker/images/Dockerfile.ubuntu-19.04
rename to utils/docker/images/Dockerfile.ubuntu-20.04
index b57b8c815e..2c12cf2a80 100644
--- a/utils/docker/images/Dockerfile.ubuntu-19.04
+++ b/utils/docker/images/Dockerfile.ubuntu-20.04
@@ -35,7 +35,7 @@
 #
 
 # Pull base image
-FROM ubuntu:19.04
+FROM ubuntu:20.04
 MAINTAINER marcin.slusarz@intel.com
 
 # Additional parameters to build docker without building components
@@ -50,7 +50,7 @@ RUN apt-get update \
 	asciidoc \
 	autoconf \
 	clang \
-	clang-format \
+	clang-format-8 \
 	cmake \
 	curl \
 	debhelper \
@@ -60,9 +60,11 @@ RUN apt-get update \
 	gdb \
 	git \
 	graphviz \
+	libdaxctl-dev \
 	libjson-c-dev \
 	libkmod-dev \
 	libncurses5-dev \
+	libndctl-dev \
 	libsfml-dev \
 	libtbb-dev \
 	libtext-diff-perl \
@@ -78,10 +80,6 @@ RUN apt-get update \
 	whois \
  && rm -rf /var/lib/apt/lists/*
 
-# Install libndctl
-COPY install-libndctl.sh install-libndctl.sh
-RUN ./install-libndctl.sh
-
 # Install valgrind
 COPY install-valgrind.sh install-valgrind.sh
 RUN ./install-valgrind.sh
@@ -98,6 +96,6 @@ USER $USER
 
 # Set required environment variables
 ENV OS ubuntu
-ENV OS_VER 19.04
+ENV OS_VER 20.04
 ENV PACKAGE_MANAGER deb
 ENV NOTTY 1
diff --git a/utils/docker/images/build-image.sh b/utils/docker/images/build-image.sh
index 7c6bec808e..f23155bf31 100755
--- a/utils/docker/images/build-image.sh
+++ b/utils/docker/images/build-image.sh
@@ -49,20 +49,20 @@ function usage {
 		"current directory."
 }
 
-# Check if the first and second argument is nonempty
-if [[ -z "$1" || -z "$2" ]]; then
+echo "Check if the first and second argument are nonempty: \"${1}\", \"${2}\""
+if [[ -z "${1}" || -z "${2}" ]]; then
 	usage
 	exit 1
 fi
 
-# Check if the file Dockerfile.OS-VER exists
+echo "Check if the file Dockerfile.${1}-${2} exists"
 if [[ ! -f "Dockerfile.$2" ]]; then
 	echo "ERROR: wrong argument."
 	usage
 	exit 1
 fi
 
-# Build a Docker image tagged with ${DOCKERHUB_REPO}:1.8-OS-VER
+echo "Build a Docker image tagged with ${DOCKERHUB_REPO}:1.8-${1}-${2}"
 docker build -t $1:1.8-$2 \
 	--build-arg http_proxy=$http_proxy \
 	--build-arg https_proxy=$https_proxy \
diff --git a/utils/docker/images/install-libndctl.sh b/utils/docker/images/install-libndctl.sh
deleted file mode 100755
index 5581f8cfab..0000000000
--- a/utils/docker/images/install-libndctl.sh
+++ /dev/null
@@ -1,92 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright 2018-2019, Intel Corporation
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-#     * Redistributions of source code must retain the above copyright
-#       notice, this list of conditions and the following disclaimer.
-#
-#     * Redistributions in binary form must reproduce the above copyright
-#       notice, this list of conditions and the following disclaimer in
-#       the documentation and/or other materials provided with the
-#       distribution.
-#
-#     * Neither the name of the copyright holder nor the names of its
-#       contributors may be used to endorse or promote products derived
-#       from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#
-# install-libndctl.sh - installs libndctl
-#
-
-set -e
-
-OS=$1
-
-echo "==== clone ndctl repo ===="
-git clone https://github.com/pmem/ndctl.git
-cd ndctl
-git checkout tags/v60.1
-
-if [ "$OS" = "fedora" ]; then
-
-echo "==== setup rpmbuild tree ===="
-rpmdev-setuptree
-
-RPMDIR=$HOME/rpmbuild/
-VERSION=$(./git-version)
-SPEC=./rhel/ndctl.spec
-
-echo "==== create source tarball ====="
-git archive --format=tar --prefix="ndctl-${VERSION}/" HEAD | gzip > "$RPMDIR/SOURCES/ndctl-${VERSION}.tar.gz"
-
-echo "==== build ndctl ===="
-./autogen.sh
-./configure
-make -j$(nproc)
-
-echo "==== update ndctl.spec ===="
-# XXX: pre-process ndctl.spec to remove dependency on libpmem
-# To be removed once ndctl v60 is available.
-sed -i -e "/pkgconfig(libpmem)/d" -e "s/--with-libpmem//g" $SPEC
-
-echo "==== build ndctl packages ===="
-rpmbuild -ba $SPEC
-
-echo "==== install ndctl packages ===="
-rpm -i $RPMDIR/RPMS/x86_64/*.rpm
-
-echo "==== cleanup ===="
-rm -rf $RPMDIR
-
-else
-
-echo "==== build ndctl ===="
-./autogen.sh
-./configure
-make -j$(nproc)
-
-echo "==== install ndctl ===="
-make -j$(nproc) install
-
-echo "==== cleanup ===="
-
-fi
-
-cd ..
-rm -rf ndctl
diff --git a/utils/docker/images/install-valgrind.sh b/utils/docker/images/install-valgrind.sh
index b9686c2cea..96124aedce 100755
--- a/utils/docker/images/install-valgrind.sh
+++ b/utils/docker/images/install-valgrind.sh
@@ -43,11 +43,12 @@ fi
 
 git clone --recursive https://github.com/pmem/valgrind.git
 cd valgrind
-# pmem-3.14: fix memcheck failure on Ubuntu-19.04
-git checkout 0965e35d7fd5c7941dc3f2a0c981cb8386c479d3
+# pmem-3.15: Merge pull request #81 from marcinslusarz/pmem-3.15
+git checkout 09f75f69683d862f8456f75484fcdc0dc5508900
+
 ./autogen.sh
 ./configure --prefix=/usr
 make -j$(nproc)
-make -j$(nproc) install
+sudo make -j$(nproc) install
 cd ..
 rm -rf valgrind
diff --git a/utils/docker/images/push-image.sh b/utils/docker/images/push-image.sh
index a4e63916cd..e4356c233c 100755
--- a/utils/docker/images/push-image.sh
+++ b/utils/docker/images/push-image.sh
@@ -49,14 +49,15 @@ function usage {
 		"locally."
 }
 
-# Check if the first argument is nonempty
-if [[ -z "$1" ]]; then
+OS__OS_VER=${1}
+echo "Check if the first argument (OS-VER) is nonempty: \"${OS__OS_VER}\""
+if [[ -z "${OS__OS_VER}" ]]; then
 	usage
 	exit 1
 fi
 
-# Check if the image tagged with ${DOCKERHUB_REPO}:1.8-OS-VER exists locally
-if [[ ! $(docker images -a | awk -v pattern="^${DOCKERHUB_REPO}:1.8-$1\$" \
+echo "Check if the image tagged with ${DOCKERHUB_REPO}:1.8-${OS__OS_VER} exists locally"
+if [[ ! $(docker images -a | awk -v pattern="^${DOCKERHUB_REPO}:1.8-${OS__OS_VER}\$" \
 	'$1":"$2 ~ pattern') ]]
 then
 	echo "ERROR: wrong argument."
@@ -64,8 +65,8 @@ then
 	exit 1
 fi
 
-# Log in to the Docker Hub
+echo "Log in to the Docker Hub"
 docker login -u="$DOCKERHUB_USER" -p="$DOCKERHUB_PASSWORD"
 
-# Push the image to the repository
-docker push ${DOCKERHUB_REPO}:1.8-$1
+echo "Push the image to the repository"
+docker push ${DOCKERHUB_REPO}:1.8-${OS__OS_VER}