Bug 1575331 - debug in udev do not work with "udevadm control --log-priority=debug" command
Summary: debug in udev do not work with "udevadm control --log-priority=debug" command
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: udev
Version: 7.4
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Michal Sekletar
QA Contact: qe-baseos-daemons
Depends On:
TreeView+ depends on / blocked
Reported: 2018-05-06 02:56 UTC by Amey
Modified: 2018-10-26 12:29 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-10-26 12:29:02 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Amey 2018-05-06 02:56:40 UTC
Description of problem:
debug in udev do not work with "udevadm control --log-priority=debug" command

Version-Release number of selected component (if applicable):

How reproducible:
everytime when udev is set in debug mode

Steps to Reproduce:
execute below
1. udevadm control --log-priority=debug
2. udevadm control --reload
3. cat /var/log/messages

Actual results:
udev do not log in debug mode

Expected results:
udev should log in /var/log/messages with log priority = debug

Additional info:

Comment 3 Michal Sekletar 2018-10-26 12:29:02 UTC
udevadm control --log-priority=debug actually enables debug mode. Try running udevadm trigger afterward and check the system log. You will see a ton of debug output from udev. Also, you will see a message "udevd message (RELOAD) received" in journal which is logged at debug level.

It is just that --reload doesn't really do what you'd expect. Udev reloads configuration lazily. It kills all worker processes and drops the config loaded from rules in the past, however, it doesn't reload all the rules immediately. It does that when next uevent is received in the future.

Btw, I was checking in journal to rule out the possibility of misconfigured rsyslog.

Note You need to log in before you can comment on or make changes to this bug.