Joseph Fannin wrote:
>
> I don't understand what you are trying to explain. Do you mean a
> union mount, or a variation thereof?
>
> I thought Al Viro was going to do union mount support for 2.5, but
> I haven't heard about it in a while. Maybe it went in and no one noticed?
>
Hi Joseph
I'm not familiar with the phrase 'union mount' and although google gives
wads of hits, I can't find a good description of it
What I mean is (contrived example with made-up mount option --overlay)
mkdir a
echo "a/x" > a/x
echo "a/y" > a/y
echo "a/z" > a/z
mkdir b
echo "b/y" > b/y
mkdir c
echo "c/z" > c/z
mkdir d
mount --bind a d
mount --bind --overlay b d
mount --bind --overlay c d
cat d/x
"a/x"
cat d/y
"b/x"
cat d/z
"c/z"
This would be *really* useful and nice. I currently emulate this
behavior with a bash script which creates hard or soft links, but the
mounting system would be much nicer, easier to unwind etc.
I assume this isn't possible now (man mount gives no hint), but how
feasible is it? Has anybody tried to implement this? If yes and No
perhaps I could (with some initial guidance) have a look at implementing
this.
I don't use HD's much anymore, so it would need to work for tmpfs.
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This archive was generated by hypermail 2b29 : Sun Dec 15 2002 - 22:00:30 EST