> Are you sure you're not running:
>
> pg_dump -Ft prod > prod.dump.tar
You are correct- I mis-typed the command in my message.
> Maybe a file size limit on that box is being hit?
No, the text dump is creating a larger file successfully, so I don't think
that is the cause. There's plenty of disk space, and the file is well under
1GB when the dump quits. The file size limit on the OS is 2GB in our case.
Thanks for the correction & idea.
-Nick