[arch-releng] [PATCH] Mount tmpfs filesystems with mode=0755

Thomas Bächler thomas at archlinux.org
Fri Jul 9 03:13:55 EDT 2010

Am 09.07.2010 01:49, schrieb Gerardo Exequiel Pozzi:
> If I understand corretly, please fix me if I am wrong, but.the problem
> is that mounts will be overlapped(*) with aufs mount stack, so at least
> one mountpoint must be unreacheable, this is where sqfs images are
> mounted /tmpfs (and /tmpfs.sqfs if copytoram is used).
> (*) http://bugs.archlinux.org/task/17182
> "Aufs rejects the branch which is an ancestor or a descendant of another
> branch. It is called overlapped. When the branch is loopback-mounted
> directory, aufs also checks the source fs-image file of loopback device.
> If the source file is a descendant of another branch, it will be
> rejected too" http://aufs.sourceforge.net/aufs2/man.html

I don't think this is the case here. You are not mounting an aufs branch
inside another one, but you are moving an AUFS branch into the AUFS
mount point itself. To me, it seems like AUFS and the Linux VFS should
be able to handle that. I haven't tested it though.

What the bug report stated is different: You nested two branches into
each other - if AUFS uses the whole directory as a branch instead of
just the mount point, I can understand why that would fail.

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