Subject: Re: > 4GB with NFS?
To: Nathan Parrish <email@example.com>
From: Alfred Perlstein <firstname.lastname@example.org>
Date: 01/25/2001 13:27:08
* Nathan Parrish <email@example.com> [010125 13:19] wrote:
> knowing NFS in general far better than *BSD in specific, I would guess the best
> thing to do (if you suspect server/client communication anomaly) is to grab a
> snoop/tcpdump of the failure. I'm trying to think of a clever way to cause the
> failure immediately, so you're not tracing 4GB of writes... mebbe dd's
> seek/skip? or just append to the existing 4GB file.
> also, what command are you using on the bsd's to write the 4GB file? I've
> definitely seen issues with VLF-capable OS's failing to write past 2/4GB due to
> VLF-incapable utilities. (on a related note, is there a need for
> vlfread()/vlfwrite() in the BSD's, or is VLF support native in the read/write
It has to do with the vm system casting values into 32bit variables,
it's been a long time since I looked at this, if I can find it again
I might be able to do something about it.
To answer your question about VLF (which I had to guess at) assuming
you mean Very Large Files:
1) yes some tools break on them, I don't have a list handy.
2) BSD has had native VLF support since 4.4-BSD. (off_t is 64bit)
-Alfred Perlstein - [firstname.lastname@example.orgemail@example.com]
"I have the heart of a child; I keep it in a jar on my desk."