rsync - Aug 2003 - Broken pipe error in local copy mode

I get an error when copying a specific directory using rsync. It works for a lot
of smaller files, but when it comes to a 1.2 GB file, it always fails with the
following error:

  rsync: writefd_unbuffered failed to write 4 bytes: phase "unknown":
Broken pipe
  rsync error: error in rsync protocol data stream (code 12) at io.c(515)

I've read at several places that this is an error which seems to occur for
more users in connection with network transfer and full hard disks. But in my
case, this is a local-to-local copy (no remote paths involved), where there is
plenty of space (approx. 10 times of the amount I want to copy) on the target
disk.

I use rsync 2.5.6 on a RH8 based Linux 2.4.21 system.
The command options I've been using are the following:
  rsync --archive --one-file-system /export1/ /export2/
where /export1 and /export2 are separate hard disks with plenty of space on
/export2

Can anyone give me a hint what the problem could be here?

Thanks,
Steve

Oops, sorry - this was a stupid beginner's mistake.

Just found out that when I was issuing the commands I never had the target disk
mounted, so the copied files went to the mount directory on the root filesystem
instead, where there was not enough space - ouch :(

Regards,
Steve