[systemd-devel] In what case will debugfs be mounted multi-times?

[cee1]

Hi all,

I'm running systemd v219 on a ARM board, and find following suspicious
log message:
"""
Jan 01 08:00:01 localhost unknown: c3 1 (systemd) systemd[1]: Mounting
Debug File System...

Jan 01 08:00:01 localhost unknown: c3 1 (systemd) systemd[1]: Starting
Remount Root and Kernel File Systems...

Jan 01 08:00:01 localhost unknown: c3 1 (systemd) systemd[1]: Starting
Foo Service...

Jan 01 08:00:01 localhost unknown: c3 1 (systemd) systemd[1]: Mounted
Debug File System.

Jan 01 08:00:01 localhost systemd[1]: foo.service: main process
exited, code=exited, status=127/n/a

Jan 01 08:00:02 localhost systemd[1]: foo.service holdoff time over,
scheduling restart.

Jan 01 08:00:02 localhost systemd[1]: Started Remount Root and Kernel
File Systems.

Jan 01 08:00:02 localhost systemd[1]: Reached target Local File Systems (Pre).

Jan 01 08:00:02 localhost systemd[1]: Starting Local File Systems (Pre).

Jan 01 08:00:02 localhost systemd[1]: sys-kernel-debug.mount:
Directory /sys/kernel/debug to mount over is not empty, mounting
anyway.

Jan 01 08:00:02 localhost systemd[1]: Mounting Debug File System...

Jan 01 08:00:02 localhost systemd[1]: sys-kernel-debug.mount mount
process exited, code=exited status=32

Jan 01 08:00:02 localhost systemd[1]: Failed to mount Debug File System.
"""


foo.service is a service with DefaultDependencies=no and Conflicts and
Before shutdown.target

So why the Debug File System is mounted multi-times here? Any idea?



-- 
Regards,

- cee1