Re: Cloning A Hard Disk Over The Network Using Ultrix

[Jay Jaeger via cctalk]

On 10/21/2017 5:40 AM, Rob Jarratt via cctech wrote:
> I have a couple of hard disks I want to make dd copies of. I have Ultrix
> running on my DECstation 5000/240 with the disk I want to clone attached to
> it. The trouble is that I don't have enough disk space on the machine to
> clone the disk and then grab the image using FTP. I have been trying to find
> a way to pipe the dd output over the network to a SIMH Ultrix machine that
> has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem
> to take input from standard input. I have looked at cpio, but that too
> appears not to accept input from standard input.
> 
>  
> 
> Unix is not my strong point. Are there any other ways I could pipe the dd
> output across the network to a machine that has enough disk space?
> 
>  
> 
> Thanks
> 
>  
> 
> Rob
> 
> 

One way would be to attach the drive to an x86 machine that supports the
disk drives, and use clonezilla.

Another way, which I have used, is to use perl or Python to do the job.
They are relatively small, so I just included mine here.

I had trouble with the perl version under Linux at some point, so now on
the Linux side, I use a Python version.  NOTE:  I am not very fluent in
Python.  Also, I don't use the Python server version.


#!/usr/bin/perl
#
#   Simple program for piping output (such as tar) from one system to 
another.
#   Contains client and server in the same script.
#
#   Usage: tcppipe [ -c server [-i file] ] | [ -s [-o file] ] [-p port]
#
#   The client reads standard input by default and sends it to "server" on
"port".
#   The server writes standard output by default.
#
#   Port defaults to 1025
#
#   JRJ  12/95
#

use Getopt::Std;
use Socket;

$debug=1;

$PROGRAM='tcppipe';
$VERSION='V1.0';
$PORT = 4097;

$MTU=65536;
$AF_INET=2;
$SOCK_STREAM=1;
$PF_INET=2;

$sockaddr='S n a4 x8';

#
#   Get and validate options.
#

getopts('c:si:o:p:') || usage();

if(($opt_c && $opt_s) || (!$opt_c && !$opt_s) ||
   ($opt_c && $opt_o) || ($opt_s && $opt_i)) {
usage();
}

if(!$opt_p) {
$opt_p = $PORT;
}

#
#   Call the client or server piece, as appropriate.
#

if($opt_c) {
return(pipe_client($opt_c,$opt_p,$opt_i));
}
else {
return(pipe_server($opt_p,$opt_o));
}

#
#   Client piece
#

sub pipe_client {
local($server,$client_port,$infile) = @_;

if($infile && ! -f $infile) {
die "$0: $infile is not a valid file.\n";
}

#
#   Open the file.  In binary, if you please...
#

if($infile) {
open(INFILE,$infile) || die "$0: Can't open file $infile: $!";
$fd = INFILE;
}
else {
$fd = STDIN;
}
binmode $fd;

if($debug) {
print "Server: $server \n";
}

#
#   Do some work to prepare the socket data structures
#
($pname, $paliases, $proto) = getprotobyname('tcp');
($hname, $haliases, $htype, $hlen, $hip) = gethostbyname($server);
if(!defined($hip)) {
die "$0: Unknown host: $server : $! ";
}
if($debug) {
@nip = unpack('C4',$hip);
print "Host address for $server: @nip \n";
}
$netaddr = pack($sockaddr, $AF_INET, $client_port, $hip);
socket(SERVER,$PF_INET,$SOCK_STREAM,$proto) ||
die "Can't create socket: $!";

#
#   Open the connection to the server.
#
connect(SERVER,$netaddr) || die "Can't connect to server: $!";
select(SERVER); $|=1; select(stdout);
if($debug) {
print "Connected to $server\n";
}

#
#   Server indicates it's name and version
#
$_=;
if($debug) {
print "Server: $_";
}
/^220 $PROGRAM $VERSION\n$/ ||
die "$0: Unexpected server response: $_";

#
#   Send the file.
#
while(read($fd,$buf,$MTU)) {
if($debug) {
print "Read in " . length($buf) . " bytes.\n";
}
print SERVER $buf ||
die "Can't send data to server: $!";
if($debug) {
print "Sent...\n";
}
}

#
#   All done
#
close(SERVER);
close($fd);
print "Transfer completed.\n";
exit 0;
}

#
#   Server piece
#
sub pipe_server {
local($server_port,$outfile) = @_;

#
#   Open the file.  In binary, if you please...
#

if($outfile) {
open(OUTFILE,">$outfile") || die "$0: Can't open file $infile: 
$!";
$fd = OUTFILE;
}
else {
$fd = STDOUT;
}
binmode $fd;

#
#   Do some work to prepare the 

RE: Cloning A Hard Disk Over The Network Using Ultrix

[Rob Jarratt via cctalk]

The rsh solution worked for me actually. I used this:

 

dd if=/dev/rrz1c conv=noerror,sync | rsh ult1 dd of=/usr/rz1.dd

 

Where “ult1” was the remote node

 

Thanks

 

Rob

 

From: Huw Davies [mailto:huw.dav...@kerberos.davies.net.au] 
Sent: 23 October 2017 09:32
To: r...@jarratt.me.uk; Rob Jarratt <robert.jarr...@ntlworld.com>; General 
Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>
Subject: Re: Cloning A Hard Disk Over The Network Using Ultrix

 

 





On 21 Oct 2017, at 21:40, Rob Jarratt via cctalk <cctalk@classiccmp.org 
<mailto:cctalk@classiccmp.org> > wrote:

 

I have a couple of hard disks I want to make dd copies of. I have Ultrix
running on my DECstation 5000/240 with the disk I want to clone attached to
it. The trouble is that I don't have enough disk space on the machine to
clone the disk and then grab the image using FTP. I have been trying to find
a way to pipe the dd output over the network to a SIMH Ultrix machine that
has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem
to take input from standard input. I have looked at cpio, but that too
appears not to accept input from standard input.



Unix is not my strong point. Are there any other ways I could pipe the dd
output across the network to a machine that has enough disk space?

 

netcat (nc) is the usual tool to do this on Unix type systems. Whether it’s 
available for Ultrix I don’t know but it may ‘just compile’.

 

If not, it’s not hard to write two simple programs to read from stdin and 
output to a TCP/IP socket on another host and the second to read from the 
socket and output to stdout.

 

If I had to write the programs I’d either google for an example to copy or have 
a read of Stevens “TCP/IP illustrated” book series - the only risk of reading 
them (there are 3 volumes) is that you can spend 6 months just learning and not 
doing :-)'

 

Huw Davies   | e-mail: huw.dav...@kerberos.davies.net.au 
<mailto:huw.dav...@kerberos.davies.net.au> 

Melbourne| "If soccer was meant to be played in the

Australia| air, the sky would be painted green" 

 

Re: Cloning A Hard Disk Over The Network Using Ultrix

[Christian Corti via cctalk]

On Sat, 21 Oct 2017, Rob Jarratt wrote:


I have a couple of hard disks I want to make dd copies of. I have Ultrix
running on my DECstation 5000/240 with the disk I want to clone attached to
it. The trouble is that I don't have enough disk space on the machine to
clone the disk and then grab the image using FTP. I have been trying to find
a way to pipe the dd output over the network to a SIMH Ultrix machine that
has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem
to take input from standard input. I have looked at cpio, but that too
appears not to accept input from standard input.


You don't use rcp but rsh (or ssh), for example:
# dd if=/dev/... bs=32768 conv=noerror,sync | rsh otherhost "cat >/dest/path"

You should use a bigger blocksize than the default of 512 bytes, otherwise 
reading will be quite slow...


Or (my preferred way under UNIX), just mount a remote filesystem via NFS 
;-)


Christian

Re: Cloning A Hard Disk Over The Network Using Ultrix

[Huw Davies via cctalk]

> On 21 Oct 2017, at 21:40, Rob Jarratt via cctalk  
> wrote:
> 
> I have a couple of hard disks I want to make dd copies of. I have Ultrix
> running on my DECstation 5000/240 with the disk I want to clone attached to
> it. The trouble is that I don't have enough disk space on the machine to
> clone the disk and then grab the image using FTP. I have been trying to find
> a way to pipe the dd output over the network to a SIMH Ultrix machine that
> has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem
> to take input from standard input. I have looked at cpio, but that too
> appears not to accept input from standard input.
> 
> 
> 
> Unix is not my strong point. Are there any other ways I could pipe the dd
> output across the network to a machine that has enough disk space?

netcat (nc) is the usual tool to do this on Unix type systems. Whether it’s 
available for Ultrix I don’t know but it may ‘just compile’.

If not, it’s not hard to write two simple programs to read from stdin and 
output to a TCP/IP socket on another host and the second to read from the 
socket and output to stdout.

If I had to write the programs I’d either google for an example to copy or have 
a read of Stevens “TCP/IP illustrated” book series - the only risk of reading 
them (there are 3 volumes) is that you can spend 6 months just learning and not 
doing :-)'

Huw Davies   | e-mail: huw.dav...@kerberos.davies.net.au
Melbourne| "If soccer was meant to be played in the
Australia| air, the sky would be painted green" 

Cloning A Hard Disk Over The Network Using Ultrix

[Rob Jarratt via cctalk]

I have a couple of hard disks I want to make dd copies of. I have Ultrix
running on my DECstation 5000/240 with the disk I want to clone attached to
it. The trouble is that I don't have enough disk space on the machine to
clone the disk and then grab the image using FTP. I have been trying to find
a way to pipe the dd output over the network to a SIMH Ultrix machine that
has plenty of disk space. I tried piping dd into rcp, but rcp doesn't seem
to take input from standard input. I have looked at cpio, but that too
appears not to accept input from standard input.

 

Unix is not my strong point. Are there any other ways I could pipe the dd
output across the network to a machine that has enough disk space?

 

Thanks

 

Rob