Re: 1GB Limit on EXT2FS?

Dancer (dancer@brisnet.org.au)
Thu, 26 Mar 1998 10:09:54 +1000

Hmm. I seem to recall being in this territory before, when seek() became
lseek()...guess we're about to get llseek() at this rate.

D

Khimenko Victor wrote:
>
> 25-Mar-98 15:34 you wrote:
> > Hi Jacques.
> >
> > >>>> Is there a way around the 1GB File size limitation on Ext2?
> > >>>> I'm pulling a bunch of stuff of a tape from a mainframe, and
> > >>>> the files are about 3GB in size.
> >
> > >>> It's actually 2 GB, but the answer, for now, is unfortunately
> > >>> "no". Large file support for ext2 is supposed to go into 2.3.
> >
> > >> Something's got me puzzled here - I hadn't realised there was a
> > >> limit of either 1G or 2G on ext2 partitions - indeed, one of the
> > >> systems I use has an ext2 partition that's 3,952,477,184 bytes in
> > >> size, which is somewhere around 3.7G according to my calculations.
> > >> Perhaps somebody could advise what the actual situation is?
> >
> > > The size of the partition is not the problem here. This is the
> > > size of a file. For sure you can create 9gig partition with
> > > ext2 now without problem, but you can't create a 3gig file in
> > > it.
> >
> > Does that mean there will be an ext3 filesystem soon which is
> > basically ext2 with those limits expanded?
> >
> As far as I am know this is NOT ONLY ext2 filesystem problem. Really it's more
> deep problem. It's not kernel only problem even. On i386, for example, you
> have lseek call with long (31bit on i386!) parameter and bunch of other calls
> which will prevent from working with files > 2Gig. You must not only rewrite
> part of kernel, but also part of glibc and part of each and every program
> with support of large files. Without such revriting this support will be
> unusable :-(( On 64bit computers there are no such problems and perhaps support
> of > 2Gig files will be in 2.2 for them.
>
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