topic Re: Setting File Attributes on a Remote Node in Operating System - OpenVMS

Setting File Attributes on a Remote Node

Kevin Atchley — Thu, 05 Oct 2006 12:33:32 GMT

Good Afternoon All,

I pose a question for you. I have a command procedure that copies a series of files from Node A to Node B. Once the files get copied to Node B, I would like the command procedure to set the file attributes to /NOBACKUP on those files. I do not want the attributes for the files on NODE A set to /NOBACKUP, so they must stay as is.

Is there an easy way to do this?

Thank you all,
-k

Re: Setting File Attributes on a Remote Node

Steven Schweda — Thu, 05 Oct 2006 12:57:37 GMT

"rsh"? Assuming that "copies" means COPY
using DECnet, you've probably noticed that
you can't use SET FILE /NOBACKUP on a
DECnet-remote file:

alp $ set file /nobackup alp::a_b.c
%SET-E-OPENIN, error opening ALP::ALP$DKA0:[SMS]A_B.C;1 as input
-SYSTEM-E-UNSUPPORTED, unsupported operation or function

A process running on the remote system can do
it. This can be arranged using a DECnet
remote task, or an IP "r" command (like
"rsh"), and probably some other (more exotic)
ways.

If the systems were clustered and the
destination disk were mounted locally, then
the problem would vanish, of course.

Re: Setting File Attributes on a Remote Node

Jim_McKinney — Thu, 05 Oct 2006 14:07:11 GMT

DECnet copy? Proxies enabled? A copy of this in the default directory on each system should work (you need to replace your nodeb nodename on the open command line). Make it more robust if you like...

$! NOBACKUP.COM
$ goto 'f$mode()'
$INTERACTIVE:
$BATCH:
$OTHER:
$ if p1 .eqs. "" then exit 852 ! %SYSTEM-F-IVMODE
$! open/read/write net swda"user password"::"task=nobackup" ! no proxy
$ open/read/write net nodeb::"task=nobackup" ! using proxy
$ write net p1
$ read net p1
$ close net
$ exit 'p1'
$ exit
$NETWORK:
$ open/read/write net sys$net
$ read net p1
$ set file/noback 'p1'
$ write net $status
$ close net
$ exit 1

Then just

$ @nobackup file.dat

or

$ @nobackup *.dat;*

etc...

Re: Setting File Attributes on a Remote Node

Steven Schweda — Thu, 05 Oct 2006 22:25:14 GMT

> $ exit 'p1'
> $ exit

Some might call that overkill.

Re: Setting File Attributes on a Remote Node

Jim_McKinney — Fri, 06 Oct 2006 06:59:28 GMT

> Some might call that overkill.

And, I'd be one of them. How did that get in there? Someone sure did a poor cut and paste job while writing this...

Re: Setting File Attributes on a Remote Node

Kevin Atchley — Wed, 01 Nov 2006 14:39:41 GMT

Thank you. After some minor tweaking for my own purposes this appears to have done the job I need. Thanks for all your help.