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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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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