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122 lines
3.5 KiB
122 lines
3.5 KiB
#!/bin/bash |
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# called by dracut |
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check() { |
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local _rootdev |
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# if there's no multipath binary, no go. |
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require_binaries multipath || return 1 |
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is_mpath() { |
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local _dev=$1 |
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[ -e /sys/dev/block/$_dev/dm/uuid ] || return 1 |
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[[ $(cat /sys/dev/block/$_dev/dm/uuid) =~ mpath- ]] && return 0 |
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return 1 |
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} |
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[[ $hostonly ]] || [[ $mount_needs ]] && { |
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for_each_host_dev_and_slaves is_mpath || 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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echo rootfs-block |
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echo 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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for m in scsi_dh_alua scsi_dh_emc scsi_dh_rdac ; do |
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if module_is_host_only $m ; then |
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printf 'rd.driver.pre=%s ' "$m" |
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fi |
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done |
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} |
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# called by dracut |
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installkernel() { |
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local _ret |
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local _arch=$(uname -m) |
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mp_mod_filter() { |
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local _funcs='scsi_register_device_handler|dm_dirty_log_type_register|dm_register_path_selector|dm_register_target' |
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# subfunctions inherit following FDs |
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local _merge=8 _side2=9 |
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function bmf1() { |
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local _f |
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while read _f || [ -n "$_f" ]; do |
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case "$_f" in |
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*.ko) [[ $(< $_f) =~ $_funcs ]] && echo "$_f" ;; |
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*.ko.gz) [[ $(gzip -dc <$_f) =~ $_funcs ]] && echo "$_f" ;; |
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*.ko.xz) [[ $(xz -dc <$_f) =~ $_funcs ]] && echo "$_f" ;; |
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esac |
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done |
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return 0 |
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} |
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function rotor() { |
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local _f1 _f2 |
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while read _f1 || [ -n "$_f1" ]; do |
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echo "$_f1" |
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if read _f2; then |
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echo "$_f2" 1>&${_side2} |
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fi |
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done | bmf1 1>&${_merge} |
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return 0 |
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} |
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# Use two parallel streams to filter alternating modules. |
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set +x |
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eval "( ( rotor ) ${_side2}>&1 | bmf1 ) ${_merge}>&1" |
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[[ $debug ]] && set -x |
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return 0 |
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} |
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( find_kernel_modules_by_path drivers/scsi; if [ "$_arch" = "s390" -o "$_arch" = "s390x" ]; then find_kernel_modules_by_path drivers/s390/scsi; fi; |
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find_kernel_modules_by_path drivers/md ) | mp_mod_filter | instmods |
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} |
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# called by dracut |
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install() { |
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local _f |
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inst_multiple -o \ |
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dmsetup \ |
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kpartx \ |
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mpath_wait \ |
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multipath \ |
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multipathd \ |
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mpathpersist \ |
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xdrgetuid \ |
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xdrgetprio \ |
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/etc/xdrdevices.conf \ |
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/etc/multipath.conf \ |
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/etc/multipath/* |
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inst $(command -v partx) /sbin/partx |
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inst_libdir_file "libmultipath*" "multipath/*" |
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inst_libdir_file 'libgcc_s.so*' |
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if [[ $hostonly_cmdline ]] ; then |
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local _conf=$(cmdline) |
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[[ $_conf ]] && echo "$_conf" >> "${initdir}/etc/cmdline.d/90multipath.conf" |
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fi |
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if dracut_module_included "systemd"; then |
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inst_simple "${moddir}/multipathd.service" "${systemdsystemunitdir}/multipathd.service" |
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mkdir -p "${initdir}${systemdsystemunitdir}/sysinit.target.wants" |
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ln -rfs "${initdir}${systemdsystemunitdir}/multipathd.service" "${initdir}${systemdsystemunitdir}/sysinit.target.wants/multipathd.service" |
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else |
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inst_hook pre-trigger 02 "$moddir/multipathd.sh" |
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inst_hook cleanup 02 "$moddir/multipathd-stop.sh" |
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fi |
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inst_hook cleanup 80 "$moddir/multipathd-needshutdown.sh" |
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inst_rules 40-multipath.rules 56-multipath.rules \ |
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62-multipath.rules 65-multipath.rules \ |
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66-kpartx.rules 67-kpartx-compat.rules \ |
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11-dm-mpath.rules |
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} |
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