Date: Wed, 28 Jul 1999 23:17:35 +0200 (CEST) From: Oliver Fromme <olli@dorifer.heim3.tu-clausthal.de> To: freebsd-stable@FreeBSD.ORG Subject: Re: Does freeBSD or any related freeBSDs support file larger than 2GB on 32bit x86 platforms Message-ID: <199907282117.XAA00574@dorifer.heim3.tu-clausthal.de>
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Greg Black wrote in list.freebsd-stable:
> Oliver Fromme writes:
>
> > olli@dao-lin-hay:/tmp> touch foobar
> > olli@dao-lin-hay:/tmp> truncate `echo "2^43 - 1" | bc` foobar
> > olli@dao-lin-hay:/tmp> ls -l foobar
> > -rw-r--r-- 1 olli wheel 8796093022207 Jul 27 23:55 foobar
> > olli@dao-lin-hay:/tmp>
> >
> > That's 8 Tbyte - 1. Impressive, isn't it? :)
>
> Depends on your concept of impressive. Look at this minor
> variation:
>
> $ df .
> Filesystem 1K-blocks Used Avail Capacity Mounted on
> mfs:36 63503 14 58409 0% /tmp
> $ touch foo
> $ truncate `echo "2^43 - 1" | bc` foo
> $ ls -ls foo
> 32 -rw-rw---- 1 gjb wheel 8796093022207 Jul 29 06:49 foo
> $ df .
> Filesystem 1K-blocks Used Avail Capacity Mounted on
> mfs:36 63503 46 58377 0% /tmp
>
> I suppose you could claim that fitting a Terabyte+ size file
> into a 64 Mbyte file system was impressive. But since the file
> really only uses 32 Kbytes (as shown by the ls(1) and df(1)
> output), I'd call it a bit of a scam ...
Well, _of course_ it is creating a sparse file, or did you
think that I've got 8 Tbyte of disk space? I wish I had. :-)
I meant that the number itself is impressive, and the fact
that FreeBSD does support files of that size, whether sparse
or not.
Regards
Oliver
--
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
(Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de)
"In jedem Stück Kohle wartet ein Diamant auf seine Geburt"
(Terry Pratchett)
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