[Zope] Re: ZEO and 2gb max limit for linux .. not for solaris etc.

[Zope]

If you don't wan't to run Sun or HP-UX you could always look
at one of the open *BSD clones. As I can recall both OpenBSD 
and FreeBSD have filsystems that manage >2GB files.
/Johan



> Sven Hohage wrote:
> > 
> > Hallo Jorgen,
> > I write you cause I've got a question about Zope.
> > You've posted on the mailing list on my question with the filesize of
> > the data.fs or in ZEO ZSS.
> > My problem is that I'd like to know which Unix - versions don't have
> > this filesize limitations and if there is a linux version without that
> > limit.
> > Or do you know another way to solve this problem??
> >                                          Many thanks
> >                                                          Sven
> 
> Hmm.. well .. I can tell you what I know as of today. Linux
> has this limitation as of today. At least all the variants I 
> have come over (mostly Red Hat and Suse). The limitation is in
> the filesystem implementation itself; meaning that the number
> of "references" that can be created cannot exceed the address
> limit of 2gb. 
> 
> Solaris does not have this limitation and neither does Hp-Ux
> or SGI Irix. I know previous versions of SunOS (v4.x) had the
> same limitation as linux is experiencing today.
> 
> Though.. there are ways "around" the problem. Though; all different
> over the variuos unix versions as of today. When running Zope
> you really don't have much choice on linux. When you hit the
> 2gb barrier .. you have problems. I have not tried it .. but 
> as I can recall there was a product for Zope that made it possible
> to "mount" several databases at once .. though it was beta.
> 
> .. this might solve a problem .. and would from my point of view
> be a nice way to go. This way; the administrator of the system
> also have some choices as to where he want to put his data. 
> Then you can move certain object databases to fast storage .. 
> and so forth.
> 
> .. so; if you have those problems; get Solaris v7/v8 for Intel
> (or if you can afford it-> sparc!) .. and run Zope of that.
> 
> I do so .. but then again; I am not near the 2gb barrier that
> many people have come over. ;) 
> 
> .. on the other hand; I am not aware of the various "beta"
> filesystem implementations and kernel "to-do"'s for linux, 
> but I suspect that it will not be long before that problem
> is solved.
> 
> .. oh! When I think of it.. SGI has ported their XFS to linux.
> Not sure how far that implementation has gone yet.. but the
> link to check out is;
> 
> http://oss.sgi.com/projects/xfs/
> 
> Looks promising.. and a "production" like filesystem for linux
> is a "must" as far as I can see. ;) Just read the brief here;
> 
>   Sub-second filesystem recovery after crashes or power
>   failures (never wait for long fscks again)
> 
>   64-bit scalability: millions of terabytes, millions of files,
>   and a million files per directory (no more 2 GB limits)
> 
>   High reliability and performance from journaling and other
>   advanced algorithms
> 
> Hope that helped a bit??
> 
> .. just shoot if there's more I can help with! ;) 
> 
> -- 
> 
> 
> Med vennlig hilsen,
> Jørgen Skogstad
> 
> 
>       /\        System Specialist
>      \\ \       
>     \ \\ /      Sun Microsystems AS
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> 
> BTW; Opinions formed by myself in informal mailings are 
>      mine and not of my employer.
> 
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