On Wed, 2008-02-27 at 13:43 -0500, Kyle McDonald wrote:
> How was it MVFS could do this without any changes to the shells or any
> other programs?
>
> I ClearCase could 'grep FOO /dir1/dir2/file@@/main/*' to see which
> version of 'file' added FOO.
> (I think @@ was the special hidden key. It might have been something
> else though.)
When I last used clearcase (on the order of 12 years ago) foo@@/ only
worked within clearcase mvfs filesystems.
It behaved as if the filesystem created a "foo@@" virtual directory for
each real "foo" directory entry, but then filtered those names out of
directory listings.
Doing the same as an alternate "view" on snapshot space would be a
simple matter of programming within ZFS, though the magic token/suffix
to get you into version/snapshot space would likely not be POSIX
compliant..
- Bill
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