#!/bin/bash

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# called by dracut

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check() {

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# No point trying to support lvm if the binaries are missing

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require_binaries lvm || return 1

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[[ $hostonly ]] || [[ $mount_needs ]] && {

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for fs in "${host_fs_types[@]}"; do

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[[ $fs = LVM*_member ]] && return 0

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done

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return 255

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}

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return 0

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}

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# called by dracut

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depends() {

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# We depend on dm_mod being loaded

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echo rootfs-block dm

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return 0

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}

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# called by dracut

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cmdline() {

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local _activated

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declare -A _activated

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for dev in "${!host_fs_types[@]}"; do

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[ -e /sys/block/${dev#/dev/}/dm/name ] || continue

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[ -e /sys/block/${dev#/dev/}/dm/uuid ] || continue

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uuid=$(</sys/block/${dev#/dev/}/dm/uuid)

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[[ "${uuid#LVM-}" == "$uuid" ]] && continue

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dev=$(</sys/block/${dev#/dev/}/dm/name)

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eval $(dmsetup splitname --nameprefixes --noheadings --rows "$dev" 2>/dev/null)

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[[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 1

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if ! [[ ${_activated[${DM_VG_NAME}/${DM_LV_NAME}]} ]]; then

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printf " rd.lvm.lv=%s\n" "${DM_VG_NAME}/${DM_LV_NAME} "

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_activated["${DM_VG_NAME}/${DM_LV_NAME}"]=1

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fi

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done

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}

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installkernel() {

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hostonly='' instmods dm-snapshot

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}

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# called by dracut

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install() {

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local _i

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inst lvm

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if [[ $hostonly_cmdline == "yes" ]]; then

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local _lvmconf=$(cmdline)

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[[ $_lvmconf ]] && printf "%s\n" "$_lvmconf" >> "${initdir}/etc/cmdline.d/90lvm.conf"

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fi

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inst_rules "$moddir/64-lvm.rules"

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if [[ $hostonly ]] || [[ $lvmconf = "yes" ]]; then

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if [ -f /etc/lvm/lvm.conf ]; then

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inst_simple -H /etc/lvm/lvm.conf

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# FIXME: near-term hack to establish read-only locking;

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# use command-line lvm.conf editor once it is available

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sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type = 4/' ${initdir}/etc/lvm/lvm.conf

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sed -i -e 's/\(^[[:space:]]*\)use_lvmetad[[:space:]]*=[[:space:]]*[[:digit:]]/\1use_lvmetad = 0/' ${initdir}/etc/lvm/lvm.conf

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fi

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export LVM_SUPPRESS_FD_WARNINGS=1

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# Also install any files needed for LVM system id support.

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if [ -f /etc/lvm/lvmlocal.conf ]; then

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inst_simple -H /etc/lvm/lvmlocal.conf

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fi

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eval $(lvm dumpconfig global/system_id_source &>/dev/null)

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if [ "$system_id_source" == "file" ]; then

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eval $(lvm dumpconfig global/system_id_file)

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if [ -f "$system_id_file" ]; then

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inst_simple -H $system_id_file

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fi

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fi

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unset LVM_SUPPRESS_FD_WARNINGS

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fi

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if ! [[ -e ${initdir}/etc/lvm/lvm.conf ]]; then

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mkdir -p "${initdir}/etc/lvm"

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{

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echo 'global {'

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echo 'locking_type = 4'

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echo 'use_lvmetad = 0'

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echo '}'

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} > "${initdir}/etc/lvm/lvm.conf"

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fi

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inst_rules 11-dm-lvm.rules 69-dm-lvm-metad.rules

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# Do not run lvmetad update via pvscan in udev rule - lvmetad is not running yet in dracut!

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if [[ -f ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules ]]; then

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if grep -q SYSTEMD_WANTS ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules; then

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sed -i -e 's/^ENV{SYSTEMD_ALIAS}=.*/# No LVM pvscan in dracut - lvmetad is not running yet/' \

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${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules

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sed -i -e 's/^ENV{ID_MODEL}=.*//' ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules

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sed -i -e 's/^ENV{SYSTEMD_WANTS}=.*//' ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules

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else

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sed -i -e 's/.*lvm pvscan.*/# No LVM pvscan for in dracut - lvmetad is not running yet/' \

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${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules

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fi

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fi

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# Gentoo ebuild for LVM2 prior to 2.02.63-r1 doesn't install above rules

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# files, but provides the one below:

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inst_rules 64-device-mapper.rules

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# debian udev rules

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inst_rules 56-lvm.rules 60-persistent-storage-lvm.rules

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inst_script "$moddir/lvm_scan.sh" /sbin/lvm_scan

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inst_hook cmdline 30 "$moddir/parse-lvm.sh"

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inst_libdir_file "libdevmapper-event-lvm*.so"

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if [[ $hostonly ]] && find_binary lvs &>/dev/null; then

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for dev in "${!host_fs_types[@]}"; do

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[ -e /sys/block/${dev#/dev/}/dm/name ] || continue

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dev=$(</sys/block/${dev#/dev/}/dm/name)

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eval $(dmsetup splitname --nameprefixes --noheadings --rows "$dev" 2>/dev/null)

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[[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || continue

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case "$(lvs --noheadings -o segtype ${DM_VG_NAME} 2>/dev/null)" in

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*thin*|*cache*|*era*)

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inst_multiple -o thin_dump thin_restore thin_check thin_repair \

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cache_dump cache_restore cache_check cache_repair \

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era_check era_dump era_invalidate era_restore

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break;;

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esac

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done

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fi

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if ! [[ $hostonly ]]; then

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inst_multiple -o thin_dump thin_restore thin_check thin_repair \

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cache_dump cache_restore cache_check cache_repair \

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era_check era_dump era_invalidate era_restore

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fi

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dracut_need_initqueue

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}

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