#
# persistent links for device-mapper devices
# only hardware-backed device-mapper devices (ie multipath, dmraid,
# and kpartx) have meaningful persistent device names
#

KERNEL!="dm-*", GOTO="kpartx_end"
ACTION!="add|change", GOTO="kpartx_end"
ENV{DM_UUID}!="?*", GOTO="kpartx_end"
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="kpartx_end"

# Create dm tables for partitions on multipath devices.
ENV{DM_UUID}!="mpath-?*", GOTO="mpath_kpartx_end"

# DM_SUBSYSTEM_UDEV_FLAG1 is the "skip_kpartx" flag.
# For events not generated by libdevmapper, we need to fetch it from db:
# - "change" events with DM_ACTIVATION!="1" (e.g. partition table changes)
# - "add" events for which rules are not disabled ("coldplug" case)
ENV{DM_ACTIVATION}!="1", IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
ACTION=="add", IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
ENV{DM_SUBSYSTEM_UDEV_FLAG1}=="1", GOTO="mpath_kpartx_end"

# 11-dm-mpath.rules sets MPATH_UNCHANGED for events that can be ignored.
ENV{MPATH_UNCHANGED}=="1", GOTO="mpath_kpartx_end"

# Don't run kpartx now if we know it will fail or hang.
ENV{DM_SUSPENDED}=="1", GOTO="mpath_kpartx_end"
ENV{DM_NOSCAN}=="1", GOTO="mpath_kpartx_end"

# Run kpartx
GOTO="run_kpartx"
LABEL="mpath_kpartx_end"

## Code for other subsystems (non-multipath) could be placed here ##

GOTO="kpartx_end"

LABEL="run_kpartx"
RUN+="/sbin/kpartx -un /dev/$name"

LABEL="kpartx_end"
