[TriLUG] tar-1.14 can't make large files

[Joseph Mack NA3T]

On Fri, 30 Jul 2004, Jeremy Portzer wrote:

> On Fri, 2004-07-30 at 12:03, Joseph Mack NA3T wrote:
> > On Fri, 30 Jul 2004, Jeremy Portzer wrote:
> >
> > > Try a test like this:
> > > 	dd if=/dev/zero of=file1 bs=1045876 count=1500
> >
> > hmm. it's not tar then. I can't even create a file of 1.5G, but can create
> > 750MB, and 1024MB. (I have plenty of free space, about 60G).

Had another bright idea.

I found another linux machine that can make 3G files with dd. It has
glibc-2.3.1 while my machine has glibc-2.3.2. Both machine have the same
mke2fs-1.32. I nfs mounted my disk onto the machine that can write large
files and now I can write a large file written onto my disk. So it isn't
the file system on my disk.

the only thing that dd does is open(0, O_LARGE_FILE) /dev/zero and
write(1, O_LARGE_FILE) file1.

I looked at /usr/include/limits.h and /usr/lib/gcc...../include/limits.h
and they look the same on both machines.

open and write have to be glibc, so did I do something funny on my
compile of glibc? my compile was

objdir:# ../configure --prefix=/usr --enable-add-ons

there aren't any LARGE_FILE options to glibc, so I can't imagine I've
turned it off. Anyhow I don't understand why I can't write files bigger
than 1G (rather than 2G, which is the small file limit)

Just incase anyone has any more ideas...

Thanks Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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