etc/udev/gentoo/64-device-mapper.rules

   1 # device mapper links hook into "change" events, when the dm table
   2 # becomes available; some table-types must be ignored
   3
   4 KERNEL=="device-mapper",        NAME="mapper/control"
   5
   6 KERNEL!="dm-*", GOTO="device_mapper_end"
   7 ACTION!="add|change", GOTO="device_mapper_end"
   8
   9 # lookup device name
  10 # use dmsetup, until devmap_name is provided by sys-fs/device-mapper
  11 PROGRAM=="/sbin/dmsetup -j %M -m %m --noopencount --noheadings -c -o name info",
  12         ENV{DM_NAME}="%c"
  13
  14 # do not do anything if dmsetup does not provide a name
  15 ENV{DM_NAME}=="", NAME="", OPTIONS="ignore_device"
  16
  17 # ignore luks crypt devices while not fully up
  18 ENV{DM_NAME}=="temporary-cryptsetup-*", NAME="", OPTIONS="ignore_device"
  19
  20 # use queried name
  21 ENV{DM_NAME}=="?*", NAME="mapper/$env{DM_NAME}"
  22
  23 SYMLINK+="disk/by-id/dm-name-$env{DM_NAME}"
  24
  25 PROGRAM!="/sbin/dmsetup status -j %M -m %m", GOTO="device_mapper_end"
  26 RESULT=="|*snapshot*|*error*", GOTO="device_mapper_end"
  27
  28 IMPORT{program}="vol_id --export $tempnode"
  29 OPTIONS="link_priority=50"
  30 ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_SAFE}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_SAFE}"
  31 ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_SAFE}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_SAFE}"
  32
  33 LABEL="device_mapper_end"