Date: Fri, 05 Aug 2005 23:23:31 -0500 From: Eric Anderson <anderson@centtech.com> To: yfyoufeng@263.net Cc: freebsd-fs@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: Pointers for understanding vfs/buffer/filesystem architecture Message-ID: <42F43B43.9010205@centtech.com> In-Reply-To: <1122889920.2885.2.camel@localhost.localdomain> References: <42E9A0E7.40703@centtech.com> <42EB9005.8080200@gamersimpact.com> <1122889920.2885.2.camel@localhost.localdomain>
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yf-263 wrote: > =E5=9C=A8 2005-07-30=E5=85=AD=E7=9A=84 09:34 -0500=EF=BC=8CRyan Sommers= =E5=86=99=E9=81=93=EF=BC=9A >=20 >>Eric Anderson wrote: >> >>>I've very interested in learning about FreeBSD's implementation of=20 >>>vfs/buffer cache/fs archicture. I've read through mckusick@'s chapter= =20 >>>in the Design and Implmentation of FreeBSD book, and I've read the UNI= X=20 >>>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=20 >>>very very simple filesystem as a learning excercise. >>> >>>Can anyone give me some pointers? Would anyone be willing to guide me= =20 >>>along in my quest by answering questions (off list if preferred, or on= =20 >>>list), etc? >>> >>>Thanks in advance for the hints/input! >>>Eric >>> >>> >> >>Best place would be the source code itself. I think the nullfs=20 >>implementation would be a good place (src/sys/fs/nullfs). I thought I=20 >>also remembered some little article on writing an FS for freebsd,=20 >>finding it is eluding me though. >=20 >=20 > 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 hel= p > 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 --=20 ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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