How to backup to a tapedrive on a Sun? rdump?

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4 total messages Started by Dick Silbar Wed, 02 Sep 1992 04:00

#894

Author: Dick Silbar
Date: Wed, 02 Sep 1992 04:00

27 lines
1774 bytes

The Sun is on an ethernet with my NeXT, and we just got this nice 4mm
tapedrive.  At the moment I am doing backups to the optical disk on my 
cube, but who knows how long that situation can last...?  So, it is
desirable to back up to the tape, if possible.

It looked pretty simple, we thought: use 'rdump ...', making sure that
root on the NeXT has root login privileges on the Sun.  It even seemed
to work, when we tried it, at least as far as the console on the NeXT
was concerned.

Not so, at the Sun.  The tape was badly written.  We then found in the
man page for rdump that the utility (in 2.1) apparently only works
between NeXTs.  Bummer.

Is that problem with rdump fixed in 3.0?

If not, is there a way to set up the crontab to write a tar file to
the Sun's tapedrive?  It seems it might be tricky (or impossible?) to
NFS mount the tapedrive so it is visible to the NeXT.  [An alternative
might be to NFS mount the NeXT disk on the Sun and run the backup through
the Sun's cron, but that seems kludgy and also shifts the chore of backing
up _my_ machine to my colleague, who doesn't want that responsibility.]

Clearly this is not the first time people have faced this problem.  Any
help here would be much appreciated.

   Dick Silbar

Re: How to backup to a tapedrive on a Sun? rdump?

#929

Author: Dirk Van Gelder
Date: Wed, 02 Sep 1992 22:12

29 lines
1841 bytes

silbar@mpx2.lampf.lanl.gov (Dick Silbar) writes:

>The Sun is on an ethernet with my NeXT, and we just got this nice 4mm
>tapedrive.  At the moment I am doing backups to the optical disk on my 
>cube, but who knows how long that situation can last...?  So, it is
>desirable to back up to the tape, if possible.

>It looked pretty simple, we thought: use 'rdump ...', making sure that
>root on the NeXT has root login privileges on the Sun.  It even seemed
>to work, when we tried it, at least as far as the console on the NeXT
>was concerned.

>Not so, at the Sun.  The tape was badly written.  We then found in the
>man page for rdump that the utility (in 2.1) apparently only works
>between NeXTs.  Bummer.

Actually, the tape was correctly written. The man pages on dump state that dumps
made with the dump supplied by Next are not compatible with restore programs from
other vendors. Supposedly the rdump.old in /usr/etc should work with restore programs
from other vendors but has not worked in my experience (which is limited). To restore
files from the dump tape on the sun use /etc/rrestore on the NeXT. To do this you have
to be root on the NeXT and have the NeXT included in the .rhosts file on the sun. 

By the way, how come the man pages state that rdump only works with other NeXT machines?

Dirk Van Gelder
(gelderd@acf3.nyu.edu)

Re: How to backup to a tapedrive on a Sun? rdump?

#1118

Author: Sherwood Botsford
Date: Tue, 15 Sep 1992 00:18

14 lines
948 bytes

Dick Silbar writes
[rdump woes deleted.]
> 
> If not, is there a way to set up the crontab to write a  
tar file to
> the Sun's tapedrive? 

Run to your nearest archive site, and get gnutar.  It  
allows things like:
gnutar -cf sunflower:/dev/rmt12 ...

The receiving host must have rmt. (also provided in the  
gnutar distribution)  Compiling is straight forward.   
Latest release I know of is 1.10.

Re: How to backup to a tapedrive on a Sun? rdump?

#1126

Author: Art Isbell
Date: Tue, 15 Sep 1992 05:59

13 lines
1165 bytes

In article <1992Sep15.001822.22867@kakwa.ucs.ualberta.ca> sherwood@fenris.space.ualberta.ca (Sherwood Botsford) writes:
>Run to your nearest archive site, and get gnutar.  It  
>allows things like:
>gnutar -cf sunflower:/dev/rmt12 ...

In 3.0 PR2, gnutar 1.10 is in /usr/bin, so I assume it is in the 3.0 release.
-- 

Art Isbell                                                      Cubic Solutions
NeXT Registered Developer #745         NeXT software development and consulting
Email: isbell@cats.UCSC.EDU                                Voice: (408)335-1154
USmail: 95018-9442                                           Fax: (408)335-2515

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