#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
is_mpath() {
local _dev=$1
[ -e /sys/dev/block/$_dev/dm/uuid ] || return 1
[[ $(cat /sys/dev/block/$_dev/dm/uuid) =~ mpath- ]] && return 0
return 1
}
majmin_to_mpath_dev() {
local _dev
for i in /dev/mapper/*; do
[[ $i == /dev/mapper/control ]] && continue
_dev=$(get_maj_min $i)
if [ "$_dev" = "$1" ]; then
echo $i
return
fi
done
}
check() {
local _rootdev
# if there's no multipath binary, no go.
require_binaries multipath || return 1
[[ $hostonly ]] || [[ $mount_needs ]] && {
for_each_host_dev_and_slaves is_mpath || return 255
}
return 0
}
depends() {
echo rootfs-block
echo dm
return 0
}
installkernel() {
local _ret
local _arch=$(uname -m)
mp_mod_filter() {
local _funcs='scsi_register_device_handler|dm_dirty_log_type_register|dm_register_path_selector|dm_register_target'
# subfunctions inherit following FDs
local _merge=8 _side2=9
function bmf1() {
local _f
while read _f; do
case "$_f" in
*.ko) [[ $(< $_f) =~ $_funcs ]] && echo "$_f" ;;
*.ko.gz) [[ $(gzip -dc <$_f) =~ $_funcs ]] && echo "$_f" ;;
*.ko.xz) [[ $(xz -dc <$_f) =~ $_funcs ]] && echo "$_f" ;;
esac
done
return 0
}
function rotor() {
local _f1 _f2
while read _f1; do
echo "$_f1"
if read _f2; then
echo "$_f2" 1>&${_side2}
fi
done | bmf1 1>&${_merge}
return 0
}
# Use two parallel streams to filter alternating modules.
set +x
eval "( ( rotor ) ${_side2}>&1 | bmf1 ) ${_merge}>&1"
[[ $debug ]] && set -x
return 0
}
( find_kernel_modules_by_path drivers/scsi; if [ "$_arch" = "s390" -o "$_arch" = "s390x" ]; then find_kernel_modules_by_path drivers/s390/scsi; fi;
find_kernel_modules_by_path drivers/md ) | mp_mod_filter | hostonly='' instmods
}
install() {
local _f _allow
add_hostonly_mpath_conf() {
is_mpath $1 && {
local _dev
_dev=$(majmin_to_mpath_dev $1)
[ -z "$_dev" ] && return
strstr "$_allow" "$_dev" && return
_allow="$_allow --allow $_dev"
}
}
inst_multiple -o \
dmsetup \
kpartx \
mpath_wait \
multipath \
multipathd \
mpathpersist \
xdrgetuid \
xdrgetprio \
/etc/xdrdevices.conf \
/etc/multipath.conf \
/etc/multipath/*
[[ $hostonly ]] && [[ $hostonly_mode = "strict" ]] && {
for_each_host_dev_and_slaves_all add_hostonly_mpath_conf
[ -n "$_allow" ] && mpathconf $_allow --outfile ${initdir}/etc/multipath.conf
}
inst $(command -v partx) /sbin/partx
inst_libdir_file "libmultipath*" "multipath/*"
if dracut_module_included "systemd"; then
inst_multiple \
$systemdsystemunitdir/multipathd.service
mkdir -p "${initdir}${systemdsystemconfdir}/sysinit.target.wants"
ln -rfs "${initdir}${systemdsystemunitdir}/multipathd.service" "${initdir}${systemdsystemconfdir}/sysinit.target.wants/multipathd.service"
else
inst_hook pre-trigger 02 "$moddir/multipathd.sh"
inst_hook cleanup 02 "$moddir/multipathd-stop.sh"
fi
inst_hook cleanup 80 "$moddir/multipathd-needshutdown.sh"
inst_rules 40-multipath.rules 62-multipath.rules 65-multipath.rules 66-kpartx.rules
}