Installation steps of kvdo on Debian 11(.3) about kvdo HOT 1 OPEN

install_dependencies() {
    (( ${#} > 1 )) && {
        apt update && \
        apt install -y "$@"
    } || echo "No dependency to install"
}

clean_dependencies() {
    (( ${#} > 1 )) && {
        apt autoremove --purge -y "$@"
    } || echo "No dependency to remove"
}

clone_repo() {
    (( ${#} == 1 )) && {
        TEMPDIR=$(mktemp -d "/tmp/${1/*\/}.XXX") && \
        git clone "$1" "${TEMPDIR}" && \
        cd "$TEMPDIR" && \
        pwd -P
    }
}

# Usage: clean $WORK_DIRECTORY $DEPENDENCIES
clean() {
    (( ${#} >= 1 )) && {
        clean_dependencies "${*:2}" > /dev/null 2>&1 &
        rm -Rf "$1" &
        wait
    }
}

# First part : KVDO module
DEPENDENCIES="git make linux-headers-$(uname -r)"
install_dependencies $DEPENDENCIES > /dev/null 2>&1
WORK_DIR="$(clone_repo https://github.com/tigerblue77/kvdo.git)"
(
    cd "${WORK_DIR}" && \
    make -j"$(nproc)" -C "/usr/src/linux-headers-$(uname -r)" M="${WORK_DIR}"
) > kvdo_build.log 2>&1

cp "${WORK_DIR}/vdo/kvdo.ko" "${WORK_DIR}/uds/uds.ko" "/lib/modules/$(uname -r)"
clean "${WORK_DIR}" $DEPENDENCIES

depmod --quick
#update-initramfs -u
#echo uds >>/etc/modules && \
#echo kvdo >> /etc/modules
modprobe kvdo
modprobe uds