Date: Thu, 25 May 2006 15:15:14 -0500 From: Eric Anderson <anderson@centtech.com> To: "Zane C.B." <zanecb@midwest-connections.com> Cc: freebsd-fs@freebsd.org Subject: Re: Distributed file systems or the like. Message-ID: <44761052.5080006@centtech.com> In-Reply-To: <20060525142447.2685a14c@zerda> References: <20060525125227.65f4b1df@zerda> <4475EE6E.3090004@centtech.com> <20060525130319.21a19a0e@zerda> <4475FE21.9050604@centtech.com> <20060525142447.2685a14c@zerda>
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Zane C.B. wrote: > On Thu, 25 May 2006 13:57:37 -0500 > Eric Anderson <anderson@centtech.com> wrote: > >> Zane C.B. wrote: >>> On Thu, 25 May 2006 12:50:38 -0500 >>> Eric Anderson <anderson@centtech.com> wrote: >>> >>>> Zane C.B. wrote: >>>>> I am looking for something that will allow my to have multiple >>>>> servers each containing the same filesystem and it is kept up to >>>>> date in real time. Any one have any opinions on AFS or have any >>>>> other suggestions? >>>> NFS? >>> NFS is nice, but it does not help when it comes to keeping a >>> duplicate set of files on a second file server that is kept up to >>> date in real time. >> You could look at TDFS (Ivan's trivially distributed file system, >> based on fuse), or a ggated mirror (I've done some layout and >> tinkering with this, but no high-load testing). > > I am curious how is the ggated setup is working? > > I see the problem being it will have to be fscked if one of the > machines goes down, before the other can take it's place. Thats correct, and there's no way around that really, unless you have softupdates enabled and mount it dangerously and do a background fsck (although some will warn of impending doom here). There's a lot of ways to do this, but what you sound like you want is a shared block device, with a single reader/writer to that disk, with a 'spare' machine ready to take over that reader/writer role at a moments notice. Does that sound right? Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
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