> I guess your script which will be executed periodically will be such
> like this (I didn't test it),
>
> mount -o remount,udba=inotify /aufs
> mv /rw/* /ro/*
> mount -o remount,udba=reval /aufs
This sample was rough or rude.
You may need to care about whiteout, and the possibility of another
process may modify aufs.
Here is a modified sample.
You still need to decide how to handle whiteouts.
----------------------------------------------------------------------
tmp=/rw/.wh..wh.$$
mount -o remount,udba=inotify /aufs
find /rw ! -name '.wh.*' \( -type d -fprintf $tmp.dir '%P\n' -o -fprintf
$tmp.nondir '%P\n' \)
cd /ro
xargs -r mkdir < $tmp.dir
xargs -ri mv /rw/\{\} \{\} < $tmp.nondir
rm $tmp.*
cd $OLDPWD
mount -o remount,udba=reval /aufs
----------------------------------------------------------------------
Ideally, this script should be executed with locking-out all other
processes.
Junjiro Okajima
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