# This file causes devicemapper devices to be assigned names by udev
# based on the name given to dmsetup.
# See udev(8) for syntax.

SUBSYSTEM!="block", GOTO="dmsetup_end"
KERNEL!="dm-*", GOTO="dmsetup_end"
ACTION!="add|change", GOTO="dmsetup_end"

# Obtain device status
IMPORT{program}="/sbin/dmsetup export -j%M -m%m"
ENV{DM_NAME}!="?*", GOTO="dmsetup_end"

# Make the device take the /dev/mapper name
OPTIONS+="string_escape=none", NAME="mapper/$env{DM_NAME}"
SYMLINK+="disk/by-id/dm-name-$env{DM_NAME}"
ENV{DM_UUID}=="?*", SYMLINK+="disk/by-id/dm-uuid-$env{DM_UUID}"

# Skip vol_id for suspended devices and those with empty or error tables
ENV{DM_STATE}=="SUSPENDED", GOTO="dmsetup_end"
ENV{DM_TARGET_TYPES}=="|*error*", GOTO="dmsetup_end"

# by-uuid and by-label symlinks
IMPORT{program}="vol_id --export $tempnode"
OPTIONS="link_priority=-100"
ENV{DM_TARGET_TYPES}=="*snapshot-origin*", OPTIONS="link_priority=-90"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", \
			SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", \
			SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

LABEL="dmsetup_end"