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Re: [Clusters_sig] RE: [Linux-cluster] Re: [Ocfs2-devel] [RFC] nodemanager, ocfs2, dlm

On 2005-07-20T11:39:38, Joel Becker <Joel Becker oracle com> wrote:

> 	In turn, let me clarify a little where configfs fits in to
> things.  Configfs is merely a convenient and transparent method to
> communicate configuration to kernel objects.  It's not a place for
> uevents, for netlink sockets, or for fancy communication.  It allows
> userspace to create an in-kernel object and set/get values on that
> object.  It also allows userspace and kernelspace to share the same
> representation of that object and its values.
> 	For more complex interaction, sysfs and procfs are often more
> appropriate.  While you might "configure" all known nodes in configfs,
> the node up/down state might live in sysfs.  A netlink socket for
> up/down events might live in procfs.  And so on.

Right. Thanks for the clarification and elaboration, for I am sure
not entirely clear as to how all these mechanisms relate in detail and
what is appropriate just where, and when to use something more classic
like ioctl etc... ;-)

FWIW, we didn't mean to get uevents out via configfs of course.

    Lars Marowsky-Brée <lmb suse de>

High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business	 -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"

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