Robert Wotzlaw:
>    The script is a part of the Debian binary package pm-utils version
>    1.4.1-8. The script remounts ext3 file systems with the option
>    commit. It is triggered by a DBUS service. The service is called
>    during the GNOME Desktop session log in.

Ok, now it becomes clear that
- the journal-commit script remounts ext[34] *only*, but it executes the
  remount command for all mounted fs.
- every fs except ext[34] returns an error (or silently ignores) since
  the journal-commit script gives it an unknown option.
- in the error case, only aufs prints the message about the unknown
  option.


>    The script tries to remount bound etx3 partitions but the origins of
>    the bound do not exists in the chroot environment. An error is the
>    consequence.

I am afraid you don't fully describe the symptom.
The script tries remouting aufs giving an ext3 option.


>    The question is how can I avoid the above problems with the script
>    journal-commit:
>
>    - Sure, do not use it.
>    - Convince the developer to rewrite their script.
>    - Ignore the kernel message and the failed remount.
>      Desktop user can ignore the failed commit but batterie powered
>      computer should use a commit because the commit reduce the power
>      consumption.
>
>    Or have you another solution?

It totally depends upon how you think "what the problem is".
How do you think abount these?
- the journal-commit script should not remount fs other than ext[34].
- aufs should not print the message.


>    Maybe the bind mounts and a chroot environment based on AUFS are
>    more general problem.

For me, this is just a problem in the journal-commit script.


J. R. Okajima

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