[rhn-users] file size problems

[Chuck Campbell]

On Sun, Mar 06, 2005 at 04:57:30PM -0800, Geoff Sweet wrote:
> Well ext3 certainly has large file support.  I am trying to rack my
> brain if there is a max filesize limitation that can be set either from
> a user standpoint, or from an NFS standpoint.  Can you try creating a
> large file with something like
> 
> dd if=/dev/zero of=/NFS_MOUNT/bob.huge bs=1024k count=3000
> 
> on the NFS share, and then again on the local machine?  That might help
> determine if maybe NFS is limiting the file-size.  Just a thought for
> trouble shooting

This also fails at two GB (2147483647 bytes actually).

coreutils is at version 4.5.3.  Is there something newer?  Do I need to turn 
on large file support explicitly?  If so, how?

I tried:
dd if=/dev/zero of=/local_disk/big_file.tst bs=1024k count=3000
and it ran without error.

I also ran this:
dd if=/dev/zero of=/local_disk/big_file.tst bs=1024k count=3000
without failure as well.

I'm at a loss, because the ftp of 33GB succeeded, this must be an 
NFS limitation?  How do I fix this?

-chuck

> 
> -Geoff
> 
> -----Original Message-----
> From: rhn-users-bounces at redhat.com [mailto:rhn-users-bounces at redhat.com]
> On Behalf Of Chuck Campbell
> Sent: Sunday, March 06, 2005 9:57 AM
> To: rhn-users at redhat.com; taroon-list at redhat.com
> Subject: [rhn-users] file size problems
> 
> I just built two dual Opteron machines for a small cluster, with 4 GB of
> ram 
> each, a dedicated GB network layer 3 switch and about a TB of disk.
> 
> I put RHEL3 update 2, WS on the compute node and ES on the master.  All 
> filesystems are ext3.
> 
> I loaded a 33GB file vi a ftp from another machine onto the cluster, and
> 
> had no issues, but when I did a cp from the master node local disk to
> the
> slave node local disk (mounted via NFS), I only got 2 GB of data moved,
> and
> an error message saying "File size exceeded".
> 
> What am I doing wrong?  This is a 64 bit OS on 64 bit processors.  Where
> did 
> this 3 GB file limit come from?  Is it in cp, NFS, ????
> 
> any help is appreciated.
> 
> thanks,
> -chuck
> 
> 
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