[Bug 1676115] [NEW] systemd-resolved spams the system log with useless “Processing query...” messages

[Anders Kaseorg]

Public bug reported:

If you are running ‘journalctl -f’ to try to debug some other problem,
you are constantly interrupted by zillions of these messages from
systemd-resolved:

Mar 26 00:53:27 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:27 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...

This was fixed upstream in v233 by downgrading this message from log_info to log_debug:
https://github.com/systemd/systemd/pull/5233

** Affects: systemd
     Importance: Unknown
         Status: Unknown

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

** Bug watch added: github.com/systemd/systemd/issues #5233
   https://github.com/systemd/systemd/issues/5233

** Also affects: systemd via
   https://github.com/systemd/systemd/issues/5233
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1676115

Title:
  systemd-resolved spams the system log with useless “Processing
  query...” messages

Status in systemd:
  Unknown
Status in systemd package in Ubuntu:
  New

Bug description:
  If you are running ‘journalctl -f’ to try to debug some other problem,
  you are constantly interrupted by zillions of these messages from
  systemd-resolved:

  Mar 26 00:53:27 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:27 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:30 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...
  Mar 26 00:53:31 change-mode systemd-resolved[1391]: Processing query...

  This was fixed upstream in v233 by downgrading this message from log_info to log_debug:
  https://github.com/systemd/systemd/pull/5233

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