zfs.install


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post_install() {
    dkms add zfs/${1%%[-_]*}
    cat << EOF
==> To build and install your modules run: dkms install zfs/${1%%[_-]*} -k [KERNEL]
==> To do this automatically at startup run: systemctl enable dkms.service
EOF
    check_initramfs "install"
}

pre_upgrade() {
    pre_remove "$2"
}

post_upgrade() {
    post_install "$1"
}

pre_remove() {
    [ -n "${1%%[-_]*}" ] && dkms remove zfs/${1%%[-_]*} --all &>/dev/null || true
}

post_remove() {
    check_initramfs "remove"
}

check_initramfs() {
    if grep -v '#' /etc/mkinitcpio.conf | grep zfs >/dev/null; then
        if [[ $1 == 'remove' ]]; then
            echo '==> The ZFS packages have been removed, but "zfs" remains in the "hooks"'
            echo '==> list in mkinitcpio.conf! You will need to remove "zfs" from the '
            echo '==> "hooks" list and then regenerate the initial ramdisk.'
        elif grep -v '#' /etc/mkinitcpio.conf | grep dkms >/dev/null; then
            echo '==> Generating initial ramdisk automatically (mkinitcpio-dkms found)'
            for preset in /etc/mkinitcpio.d/*.preset; do
                mkinitcpio -p "$(basename "$preset" .preset)"
            done
        else
            echo '==> The ZFS packages are installed/updated, you need to (re)generate initial ramdisk yourself'
            echo '==> After modules are built and installed, run: mkinitcpio -p [PRESET]'
            echo '==> To do it automatically, you can also install mkinitcpio-dkms package'
            echo '==> and add "dkms" to HOOKSs (before zfs)'
        fi
    fi
}