hello, it is unclear to me from the docs and man page whether is is possible to have a rw aufs file system with a ro "first (upper-most) branch. the man page says "The default branch permission for the first branch is ârwâ, and the rest is âro.â" and "When you mount or remount your union without âo ro common mount option and without writable branch, aufs will warn you that the first branch should be writable." but i cannot find any more info regarding this.
what i want to do is this: mount -t aufs -o br:one=ro:two=rw none base this works, but when i try to write to base i cannot (ro file system). i am not sure why aufs will not simply write to "two" if this is not possible, what is the best solution for keeping "one" at the top of the stack? i thought of making a dummy empty directory an mounting it like this: mount -t aufs -o br:dummy=rw:one=ro:two=rw none base is this the recommended way? sincerely, proctor
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