Please create some unique message to be written by InnoDB into the server error log

which signals that InnoDB will stop its activity (processes and/or threads) immediate.

Such a message would be a significant advantage for QA when classifying suspicious effects.

One example of behaviour in 10.6

[Note] ... /bin/mysqld (initiated by: root[root] @ localhost [127.0.0.1]): Normal shutdown

...

Note] InnoDB: Starting shutdown...

[Note] InnoDB: Dumping buffer pool(s) to ... data/ib_buffer_pool

[Note] InnoDB: Buffer pool(s) dump completed at 201202 19:59:02

[Note] InnoDB: Shutdown completed; log sequence number 3153035; transaction id 4930

[Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"

[Note] ... bin/mysqld: Shutdown complete

I would prefer to have an order of InnoDB related messages like

  [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1" 

        or whatever InnoDB likes to tell

  [Note] InnoDB: Shutdown completed;  <and whatever extra info in the same line>

  < no line written by InnoDB because it has really finished its work>

  [Note] ... bin/mysqld: Shutdown complete

for all currently supported and future MariaDB versions