Re: Pointers for understanding vfs/buffer/filesystem architecture

From: Eric Anderson (anderson_at_centtech.com)
Date: 08/06/05

  • Next message: Doug Barton: "FreeBSD-* files in non-HEAD branches" 
    Date: Fri, 05 Aug 2005 23:23:31 -0500
To: yfyoufeng@263.net

    yf-263 wrote:
    > 在 2005-07-30六的 09:34 -0500，Ryan Sommers写道：
    >
    >>Eric Anderson wrote:
    >>
    >>>I've very interested in learning about FreeBSD's implementation of
    >>>vfs/buffer cache/fs archicture. I've read through mckusick@'s chapter
    >>>in the Design and Implmentation of FreeBSD book, and I've read the UNIX
    >>>Filesystems book cover to cover.
    >>>
    >>>What I'd like to see/read/understand, is how FreeBSD in particular is
    >>>put together in this regard, and then I'd like to go about writing a
    >>>very very simple filesystem as a learning excercise.
    >>>
    >>>Can anyone give me some pointers? Would anyone be willing to guide me
    >>>along in my quest by answering questions (off list if preferred, or on
    >>>list), etc?
    >>>
    >>>Thanks in advance for the hints/input!
    >>>Eric
    >>>
    >>>
    >>
    >>Best place would be the source code itself. I think the nullfs
    >>implementation would be a good place (src/sys/fs/nullfs). I thought I
    >>also remembered some little article on writing an FS for freebsd,
    >>finding it is eluding me though.
    >
    >
    > I'm also doing the same work. Now I'm working on port our data access
    > library into the FreeBSD kernel space as a vnode hooks. Hope we can help
    > each others :)

    Excellent! I'm looking forward to seeing some alpha code to play with :)

    I'm still in the R&D mode myself.

    Eric 

    -- 
------------------------------------------------------------------------
Eric Anderson        Sr. Systems Administrator        Centaur Technology
Anything that works is better than anything that doesn't.
------------------------------------------------------------------------
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