Date: Wed, 20 Jul 2005 07:34:18 -0500 From: Eric Anderson <anderson@centtech.com> To: yfyoufeng@263.net Cc: freebsd-fs@freebsd.org Subject: Re: Cluster Filesystem for FreeBSD - any interest? Message-ID: <42DE44CA.7080503@centtech.com> In-Reply-To: <1121826946.2235.6.camel@localhost.localdomain> References: <200507020038.j620cO7F071025@gate.bitblocks.com> <42DDB3F2.7020000@centtech.com> <1121826946.2235.6.camel@localhost.localdomain>
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yf-263 wrote: > =E5=9C=A8 2005-07-19=E4=BA=8C=E7=9A=84 21:16 -0500=EF=BC=8CEric Anderso= n=E5=86=99=E9=81=93=EF=BC=9A >=20 >>Bakul Shah wrote: >>[..snip..] >> >>>>:) I understand. Any nudging in the right direction here would be >>>>appreciated. >>> >>> >>>I'd probably start with modelling a single filesystem and how >>>it maps to a sequence of disk blocks (*without* using any >>>code or worrying about details of formats but capturing the >>>essential elements). I'd describe various operations in >>>terms of preconditions and postconditions. Then, I'd extend >>>the model to deal with redundancy and so on. Then I'd model >>>various failure modes. etc. If you are interested _enough_ >>>we can take this offline and try to work something out. You >>>may even be able to use perl to create an `executable' >>>specification:-) >> >>I've done some research, and read some books/articles/white papers sinc= e=20 >>I started this thread. >> >>First, porting GFS might be a more universal effort, and might be=20 >>'easier'. However, that doesn't get us a clustered filesystem with BSD= =20 >>license (something that sounds good to me). >=20 >=20 > It has been said it would be a seven man-month efforts for a FS expert.= Then we need to get a small group together and get started.. >>Clustering UFS2 would be cool. Here's what I'm looking for: >=20 >=20 > It is exactly how "Lustre" doing its work, though it build itself on > Ext3, and Lustre targets at http://www.lustre.org/docs/SGSRFP.pdf . Yes, I've read about lustre. I like the GFS model much better. Eric --=20 ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology A lost ounce of gold may be found, a lost moment of time never. ------------------------------------------------------------------------
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