Messages in this thread | | | From | Mirian Crzig Lennox <> | Subject | Re: autofs vs. Sun automount -- new fs proposal | Date | 20 Dec 1998 15:59:48 -0500 |
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Richard Gooch <rgooch@atnf.csiro.au> writes: > > This is the way the BSD "null" file system works (having talked to > > the author). It does not impose a significant penalty, as there is > > almost nothing to do! But you have to do it often, once for each > > method, slightly differently each time. > > Oh, yeah. Just what do the "nullfs" and "deadfs" filesystems in BSD > do, anyway?
nullfs implements a loopback filesystem.
deadfs, as its name implies, implements a "dead" filesystem where all operations except close() fail. The reason for its existence is that in BSD a vnode can be disassociated from the underlying physical object it refers to. When this happens, an object from the deadfs takes the place of the previous "live" fs object.
-- Mirian Crzig Lennox Systems Anarchist "There's a New World Order coming every minute. Make mine extra cheese."
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