modules.d/90lvm/module-setup.sh

   1 #!/bin/bash
   2
   3 # called by dracut
   4 check() {
   5     # No point trying to support lvm if the binaries are missing
   6     require_binaries lvm || return 1
   7
   8     [[ $hostonly ]] || [[ $mount_needs ]] && {
   9         for fs in "${host_fs_types[@]}"; do
  10             [[ $fs = LVM*_member ]] && return 0
  11         done
  12         return 255
  13     }
  14
  15     return 0
  16 }
  17
  18 # called by dracut
  19 depends() {
  20     # We depend on dm_mod being loaded
  21     echo rootfs-block dm
  22     return 0
  23 }
  24
  25 # called by dracut
  26 cmdline() {
  27     local _activated
  28     declare -A _activated
  29
  30     for dev in "${!host_fs_types[@]}"; do
  31         [ -e /sys/block/${dev#/dev/}/dm/name ] || continue
  32         [ -e /sys/block/${dev#/dev/}/dm/uuid ] || continue
  33         uuid=$(</sys/block/${dev#/dev/}/dm/uuid)
  34         [[ "${uuid#LVM-}" == "$uuid" ]] && continue
  35         dev=$(</sys/block/${dev#/dev/}/dm/name)
  36         eval $(dmsetup splitname --nameprefixes --noheadings --rows "$dev" 2>/dev/null)
  37         [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || return 1
  38         if ! [[ ${_activated[${DM_VG_NAME}/${DM_LV_NAME}]} ]]; then
  39             printf " rd.lvm.lv=%s\n" "${DM_VG_NAME}/${DM_LV_NAME} "
  40             _activated["${DM_VG_NAME}/${DM_LV_NAME}"]=1
  41         fi
  42     done
  43 }
  44
  45 installkernel() {
  46     instmods dm-snapshot
  47 }
  48
  49 # called by dracut
  50 install() {
  51     local _i
  52
  53     inst lvm
  54
  55     if [[ $hostonly_cmdline == "yes" ]]; then
  56         local _lvmconf=$(cmdline)
  57         [[ $_lvmconf ]] && printf "%s\n" "$_lvmconf" >> "${initdir}/etc/cmdline.d/90lvm.conf"
  58     fi
  59
  60     inst_rules "$moddir/64-lvm.rules"
  61
  62     if [[ $hostonly ]] || [[ $lvmconf = "yes" ]]; then
  63         if [ -f /etc/lvm/lvm.conf ]; then
  64             inst_simple -H /etc/lvm/lvm.conf
  65             # FIXME: near-term hack to establish read-only locking;
  66             # use command-line lvm.conf editor once it is available
  67             sed -i -e 's/\(^[[:space:]]*\)locking_type[[:space:]]*=[[:space:]]*[[:digit:]]/\1locking_type = 4/' ${initdir}/etc/lvm/lvm.conf
  68             sed -i -e 's/\(^[[:space:]]*\)use_lvmetad[[:space:]]*=[[:space:]]*[[:digit:]]/\1use_lvmetad = 0/' ${initdir}/etc/lvm/lvm.conf
  69         fi
  70
  71         export LVM_SUPPRESS_FD_WARNINGS=1
  72         # Also install any files needed for LVM system id support.
  73         if [ -f /etc/lvm/lvmlocal.conf ]; then
  74             inst_simple -H /etc/lvm/lvmlocal.conf
  75         fi
  76         eval $(lvm dumpconfig global/system_id_source)
  77         if [ "$system_id_source" == "file" ]; then
  78             eval $(lvm dumpconfig global/system_id_file)
  79             if [ -f "$system_id_file" ]; then
  80                 inst_simple -H $system_id_file
  81             fi
  82         fi
  83         unset LVM_SUPPRESS_FD_WARNINGS
  84     fi
  85
  86     if ! [[ -e ${initdir}/etc/lvm/lvm.conf ]]; then
  87         mkdir -p "${initdir}/etc/lvm"
  88         {
  89             echo 'global {'
  90             echo 'locking_type = 4'
  91             echo 'use_lvmetad = 0'
  92             echo '}'
  93         } > "${initdir}/etc/lvm/lvm.conf"
  94     fi
  95
  96     inst_rules 11-dm-lvm.rules 69-dm-lvm-metad.rules
  97
  98     # Do not run lvmetad update via pvscan in udev rule  - lvmetad is not running yet in dracut!
  99     if [[ -f ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules ]]; then
 100         if grep -q SYSTEMD_WANTS ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules; then
 101             sed -i -e 's/^ENV{SYSTEMD_ALIAS}=.*/# No LVM pvscan in dracut - lvmetad is not running yet/' \
 102                 ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules
 103             sed -i -e 's/^ENV{ID_MODEL}=.*//' ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules
 104             sed -i -e 's/^ENV{SYSTEMD_WANTS}=.*//' ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules
 105         else
 106             sed -i -e 's/.*lvm pvscan.*/# No LVM pvscan for in dracut - lvmetad is not running yet/' \
 107                 ${initdir}/lib/udev/rules.d/69-dm-lvm-metad.rules
 108         fi
 109     fi
 110
 111     # Gentoo ebuild for LVM2 prior to 2.02.63-r1 doesn't install above rules
 112     # files, but provides the one below:
 113     inst_rules 64-device-mapper.rules
 114     # debian udev rules
 115     inst_rules 56-lvm.rules 60-persistent-storage-lvm.rules
 116
 117     inst_script "$moddir/lvm_scan.sh" /sbin/lvm_scan
 118     inst_hook cmdline 30 "$moddir/parse-lvm.sh"
 119
 120     inst_libdir_file "libdevmapper-event-lvm*.so"
 121
 122     if [[ $hostonly ]] && type -P lvs &>/dev/null; then
 123         for dev in "${!host_fs_types[@]}"; do
 124             [ -e /sys/block/${dev#/dev/}/dm/name ] || continue
 125             dev=$(</sys/block/${dev#/dev/}/dm/name)
 126             eval $(dmsetup splitname --nameprefixes --noheadings --rows "$dev" 2>/dev/null)
 127             [[ ${DM_VG_NAME} ]] && [[ ${DM_LV_NAME} ]] || continue
 128             case "$(lvs --noheadings -o segtype ${DM_VG_NAME} 2>/dev/null)" in
 129                 *thin*|*cache*|*era*)
 130                     inst_multiple -o thin_dump thin_restore thin_check thin_repair \
 131                                   cache_dump cache_restore cache_check cache_repair \
 132                                   era_check era_dump era_invalidate era_restore
 133                     break;;
 134             esac
 135         done
 136     fi
 137
 138     if ! [[ $hostonly ]]; then
 139         inst_multiple -o thin_dump thin_restore thin_check thin_repair \
 140                       cache_dump cache_restore cache_check cache_repair \
 141                       era_check era_dump era_invalidate era_restore
 142     fi
 143
 144     dracut_need_initqueue
 145 }