#!/usr/bin/bash

build() {
    local symlink

    # device mapper modules
    map add_module \
        'dm-mod' \
        'dm-snapshot?' \
        'dm-mirror?' \
        'dm-cache?' \
        'dm-cache-smq?' \
        'dm-writecache?' \
        'dm-thin-pool?' \
        'dm-raid?' \
        'raid0?' \
        'raid1?' \
        'raid10?' \
        'raid456?' \
        'dm-integrity?' \
        'dm-vdo?'

    # from thin-provisioning-tools
    add_binary 'pdata_tools'
    while IFS='' read -r -d '' symlink; do
        add_symlink "$symlink"
    done < <(LC_ALL=C.UTF-8 find -L /usr/bin/ -samefile "$(type -P pdata_tools)" -xtype l -print0)

    # udev rules and lvm configuration
    map add_udev_rule \
        '10-dm.rules' \
        '11-dm-lvm.rules' \
        '13-dm-disk.rules' \
        '95-dm-notify.rules'

    # this udev rule is specific for systemd and non-systemd systems
    if declare -F add_systemd_unit &>/dev/null; then
        add_udev_rule '69-dm-lvm.rules'
    else
        add_udev_rule '/usr/lib/initcpio/udev/69-dm-lvm.rules'
    fi

    # config file
    sed -e 's/^[[:space:]#]*monitoring = [[:digit:]]\+\s*$/\tmonitoring = 0/' \
        -e '/^$/d' -e '/^[[:space:]]*#/d' "/etc/lvm/lvm.conf" | add_file - '/etc/lvm/lvm.conf' 644
}

help() {
  cat <<HELPEOF
This hook enables all detected LVM2 volumes in initramfs.
HELPEOF
}