[Linux-decnet-user] Re: Back-up VMS Linux

[Larry B. <ba...@us...>]

Re: Back-up VMS  LinuxOpenVMS documentation is available online from =
DEC/Compaq/HP.  I have found it is simplest to first go to =
http://www.compaq.com/openvms.  This will redirect you to an HP web site =
(there is no http://www.hp.com/openvms).  From there, you can access a =
link to the OpenVMS documentation home page.  There is a search window.  =
Enter BACKUP, and you will be given a list of many documents that =
contain a reference to OpenVMS BACKUP.  Choose the link to the OpenVMS =
System Manager's Manual.  Chapter 10 is Using BACKUP.  Start there.

Larry Baker
US Geological Survey

  ----- Original Message -----=20
  From: Daniel Carrere=20
  To: Larry Baker=20
  Sent: Tuesday, May 27, 2003 11:22 PM
  Subject: Re: [Linux-decnet-user] Re: Back-up VMS Linux



  HI, Larry,=20

  Thank-you very much for these informations:=20
  it is possible, and where I can find the other informations.=20

  If I succeed, I'll tell you=20

  Daniel=20



  Le mar 27/05/2003 =E0 20:30, Larry Baker a =E9crit :=20
    >From any OpenVMS system, you can type HELP BACKUP to obtain =
detailed information on the BACKUP program options.  Some options only =
apply to tapes (like /REWIND or /NOREWIND), some only apply to the input =
disk (like /IGNORE=3DINTERLOCK), some only apply to the output disk for =
disk-to-disk or restore operations (like /OWNER=3DORIGINAL).=20

    I always ANALYZE/DISK before doing a backup and correct any problems =
with the file system first.  I also only make backups on my system when =
no one else is logged on.  The system manager of our timesharing OpenVMS =
system does backups while people are logged on, which means he has to =
use /IGNORE=3DINTERLOCK.=20

    To make an image backup across DECnet of any disk but the system =
(boot) disk, the command is BACKUP/VERIFY/IMAGE disk-name: =
DECnet-node::remote-disk:[remote-directory]save-set-name/SAVE_SET.  This =
assumes you use DECnet proxy logins.  If not, you have to replace =
DECnet-node:: with DECnet-node"userid password"::.  The disk must be =
mounted, but it can be mounted /NOWRITE.=20

    To make an image backup of the system disk, change disk-name: to =
system-disk-name:/IGNORE=3DINTERLOCK.=20

    I haven't done any OpenVMS backups of my disks yet using =
linux-decnet; just the test of my personal directory tree.  So, my =
instructions may have to be slightly modified.  Also, my systems are =
dedicated for my projects, so I only do full backups.  The system =
manager of our timesharing OpenVMS system does both full and incremental =
backups.=20

    I set up the fal server on my Red Hat 8.0 Linux system to use the =
.fal hidden directory to store OpenVMS file attribute information: in =
/etc/dnetd.conf, change the fal command to fal -m, then (re)start =
decnet.  In that case, I don't have to use any special file name suffix =
for a BACKUP save set.  There are other options for fal which may affect =
you.  Look them over and try it out first.  And, ALWAYS use the /VERIFY =
option!=20

    To use NFS for backups, it is the same as a local disk-to-disk =
backup.  Your NFS client package on OpenVMS should create a mounted disk =
volume, which you can use like any other local disk, except for the =
differences between Unix and OpenVMS file system semantics, such as =
version numbers, RMS, etc.  Look at the manuals that came with your =
TCP/IP package for that kind of information.  We use Process Software =
MultiNet V4.4; OpenVMS usually comes bundled with TCP/IP Services for =
OpenVMS.=20

    OpenVMS save sets are not compressed, and have extra XOR blocks =
added for data recovery.  So, a 2 GB disk will take more than 2 GB to =
backup.  If your NFS client/server combination supports only NFS version =
2, you will not be able to create a save set larger than 2 GB.  You'll =
have to try it with your setup to see what works.  And, ALWAYS use the =
/VERIFY option!=20

    Larry Baker=20
    US Geological Survey=20



    on 5/26/03 12:57 AM, Daniel Carrere at d.c...@me... =
wrote:=20


      Hi Larry,=20

      Sorry for my question, I didn't see the other message.=20

      I wanted to replace my tapes by an IDE disk on a Linux box;=20

      Here is my command to save on tape=20

      $ BACKUP/IMAGE /NOREWIND /LOG /IGNORE=3D(INTERLOCK,LABEL) DKA200:  =
MKA600:DKA200.BCK   /SAVE_SET /MEDIA_FORMAT=3DCOMPACTION /OWNER=3DORIGIN =


      As I am not a VMS programer, how can modify it to save by NFS ( my =
disk is only 2 Go   Vas 3100-95 )=20

      Thanks a lot,=20

      Daniel=20


    --=20