Re: union mounts

[James Carter <james@cs.york.ac.uk> writes:]

>i've not been able to find an answer in the available documentation ( i
>admit i haven't looked at the source).
>does vsta support plan9-like union mounts?

Yes. See vsta/src/lib/open.c, the "struct mntent" data structure.

From the shell, just "mount <thing> /<path>" to put more than one <thing>
into the /<path>.

>i find that almost as useful as per-process namespace.

That's the claim I heard from Plan 9 in particular, but in practice I've
never used it much at all. For instance, Plan 9's shell only looks at /bin,
and you're expected to union things into it. But in practice, all shells
(even the freeware "rc" clone) use a PATH concept. Still, it's there, and
works (delta any bit rot).

                                                        Andy Valencia
Received on Fri Nov 6 13:22:41 1998