Patrick:
> logs etc. to ram .. but sometimes I need modifications to be done
> permanently, thus infact I would need that.
> But isnt there another way? e.g. copying / mount-moving/binding
> real_root to the union or something like that?
I think it depends on your initramfs.
As long as you use initramfs, you cannot see /real_root, can you?
If aufs introduces a new option which enables changeing permission mode
of a hidden branch, you cannot write to it directly.
But here is an idea, which might be rather complex operation.
- introduce some mount options,
+ idel:<branch index>
removes a branch specified by index, instead of path.
+ imod:<branch index>:<new permission>
modifies a permission mode of the branch specified by index, instead
of path.
+ imove:<old branch index>:<new branch index>
re-order the branches, from <old> to <new>. it might be dangerous.
+ coo
copyup on open
+ nocoo
disables coo
- mount -o remount,imod:1:rw,imove:1:0,imod:1:ro,coo /your/aufs
- head -1 /your/aufs/whatever/you/want/to/copyup
- mount -o remount,imod:1:rw,imove:1:0,imod:1:ro,nocoo /your/aufs
Is that what you need?
Junjiro Okajima
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
