systemd/etc/udev/suse/64-device-mapper.rules

# device mapper links hook into "online" event, when the dm table
# is available, while some table types must be ignored

KERNEL=="device-mapper", SYMLINK+="mapper/control"

KERNEL=="dm-*", ACTION=="add|change", GOTO="device_mapper_do"
GOTO="device_mapper_end"

LABEL="device_mapper_do"
PROGRAM!="/sbin/dmsetup status -j %M -m %m", GOTO="device_mapper_end"
RESULT=="|*snapshot*|*error*", GOTO="device_mapper_end"

IMPORT{program}="vol_id --export $tempnode"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID}"
ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_SAFE}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_SAFE}"

LABEL="device_mapper_end"