Pete Wyckoff wrote:
It is possible to mount pvfs via the kernel interface read-only, but
I'm not sure if we have a way to do that via userspace apps, e.g.
pvfs2-ls, MPI. For a remote-mount metadata mirroring project we've
been doing, this would be handy.
I think the only feasible way to handle it is at the clients.
Servers don't keep any state about who has what mounted, and we
don't want to add some sort of "read-only export" capability to
servers. Maybe it could be argued that we should just run apps that
don't write.
You wouldn't have to add read-only export capability- its already there :)
Have a look at the "ReadOnly" option and comments that go with it in
src/common/misc/server-config.c. I've used it (and the associated
squashing options) a little bit and it seems to work fine. Would this
work for what you need?
-Phil
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