Created attachment 1198428 [details]
udev debug output from udev-147-2.73.el6_8.1

Description of problem:
udev-147-2.73.el6_8.1 seems to have introduced bug where rules from /etc/udev/rules.d/12-dm-permissions.rules (that set device ownership) stop working. Rolling back "udev" RPM to previous version (udev-147-2.73.el6) fixes the issue.

Version-Release number of selected component (if applicable):
udev-147-2.73.el6_8.1.x86_64

How reproducible:
Always (after installing/upgrading to udev-147-2.73.el6_8.1.x86_64.rpm) 

Steps to Reproduce:
1. Update/create /etc/udev/rules.d/12-dm-permission.rules to include rules setting custom ownershipt for specific LV devices. For example:
---
# Udev rules for device-mapper devices.
# For more info see: /usr/share/doc/device-mapper-1.02.53/12-dm-permissions.rules

ACTION!="add|change", GOTO="dm_end"
ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_end"

ENV{DM_VG_NAME}=="vg*", ENV{DM_LV_NAME}=="ifx*", OWNER:="informix", GROUP:="informix", MODE:="660"

LABEL="dm_end"
---

2. Create LV matching the custom rule (/dev/vg01/ifxtest for example)
3. Check permissions of the /dev/dm-?? that got created...

Actual results:

brw-rw----. 1 root disk 253, 38 Sep  6 13:42 /dev/dm-38

Expected results:

brw-rw----. 1 informix informix 253, 38 Sep  6 13:50 /dev/dm-38


Additional info:

Noticeable difference between the old udev versions (that work correctly) and the new version (that does not work correctly), is that old versions logged "set permissions" log entry like this:

Sep  6 13:50:13 qavm21 udevd-work[11467]: set permissions /dev/dm-38, 060660, uid=202, gid=202

While new version doesnt do this anymore (and likely thats why permissions dont get set correctly?).

Attached is log output from udev with the "broken" udev-147-2.73.el6_8.1 and "working" udev-147-2.73.el6, when issuing same command "lvcreate -L 1M -n ifxtest vg01".