Re: [PATCH 00/14] Pramfs: Persistent and protected ram filesystem

From: Pavel Machek
Date: Mon Jun 22 2009 - 16:41:00 EST

On Mon 2009-06-22 20:07:06, Marco wrote:
> Pavel Machek wrote:
> > On Mon 2009-06-22 10:31:28, Tim Bird wrote:
> >> Pavel Machek wrote:
> >>>>> How do you handle hard-links, then?
> >>>> Indeed hard-links are not supported :) Due to the design of this fs
> >>>> there are some limitations explained in the documentation as not
> >>>> hard-link, only private memory mapping and so on. However this
> >>>> limitations don't limit the fs itself because you must consider the
> >>>> special goal of this fs.
> >>> I did not see that in the changelog. If it is not general purpose
> >>> filesystem, it is lot less interesting.
> >> PRAMFS is not a general purpose filesystem. Please read
> >> the introductory post to this thread, or look at
> >> for more information.
> >
> > Yeah, I seen that. It directly contradicts what you say.
> >
> I don't think, I think it's very clear:
> "In summary, PRAMFS is a light-weight, full-featured, and
> space-efficient special filesystem that is ideal for systems with a

Except that it is not full-featured. No hardlinks. (What about ACLs, etc?)

> block of fast non-volatile RAM that need to access data on it using a
> standard filesytem interface."

Turns a block of fast RAM into 13MB/sec disk. Hmm. I believe you are
better with ext2.

(cesky, pictures)
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