Re: How come dd if=/dev/zero of=/nfs/dev/null does not send packets over the network?

[Christoph Hellwig]

On Wed, Jun 02, 2004 at 08:04:06AM -0400, Piszcz, Justin Michael wrote:
> root@jpiszcz:~# mkdir /p500/dev
> root@jpiszcz:~# mount 192.168.0.253:/dev /p500/dev
> root@jpiszcz:~# echo blah > /p500/dev/null
> root@jpiszcz:~# ls -l /p500/dev/null
> crw-rw-rw-  1 root sys 1, 3 Jul 17  1994 /p500/dev/null
> root@jpiszcz:~# dd if=/dev/zero of=/p500/dev/null
> 
> 6179737+0 records in
> 6179736+0 records out
> 
> Instead it treats it as a local block device?

character device actually.  Anyway, nfs never forwarded device files, the
protocol can't handle all the ioctl() variants anyway.

and how else would root on nfs work? :)

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