dump and restore

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2 total messages Started by David K. Drum Fri, 20 Nov 1992 17:00

#3956

Author: David K. Drum
Date: Fri, 20 Nov 1992 17:00

27 lines
1478 bytes

Hello again,
 
The Powers That Be are going to erase our home directories between
semesters, and since I have about 60MB of files to backup I would
like to make this simple as possible.  I have perused the manuals
for dump and restore, and would like to ask all you really
knowledgable people if I have the commands right.  I will be dumping
to HD floppy disks:
 
dump 0Of 1.39 /dev/rfd0a
restore rjvf /dev/rfd0a
 
I have a few concerns.  One, should I use NeXT formatted disks, or
can I use DOS formatted disks?  I would like to use DOS because there
is less file system overhead.  If I should use NeXT, what would the
correct O parameter be?  1.3?  Two, since I am not root, how can I
know that dump is only backing up my home directory and not everything?
Three, I am guessing that dump does no sort of compression; therefore,
might I be better off making a .tar.Z and somehow dumping that file
only?
 
If there are any better ways to do this (Opener, maybe?) please clue
me in!
 
Regards,
 
David K. Drum

Re: dump and restore

#4036

Author: Sherwood Botsford
Date: Tue, 24 Nov 1992 00:00

41 lines
2463 bytes

David K. Drum (UC512052@mizzou1.missouri.edu) wrote:
: Hello again,
:  
: The Powers That Be are going to erase our home directories between
: semesters, and since I have about 60MB of files to backup I would
: like to make this simple as possible.  I have perused the manuals
: for dump and restore, and would like to ask all you really
: knowledgable people if I have the commands right.  I will be dumping
: to HD floppy disks:
:  
: dump 0Of 1.39 /dev/rfd0a
: restore rjvf /dev/rfd0a
:  
: I have a few concerns.  One, should I use NeXT formatted disks, or
: can I use DOS formatted disks?  I would like to use DOS because there
: is less file system overhead.  If I should use NeXT, what would the
: correct O parameter be?  1.3?  Two, since I am not root, how can I
: know that dump is only backing up my home directory and not everything?
: Three, I am guessing that dump does no sort of compression; therefore,
: might I be better off making a .tar.Z and somehow dumping that file
: only?
:  
: If there are any better ways to do this (Opener, maybe?) please clue
: me in!

1.  You don't want to use dump.  Dump will only dump full partitions.  It's
somewhat unlikely that you want the entire partition.  (I would be surprised
if you have permission to do so.) 


3.  You may prefer to use Zip, organize your stuff into chunks that zip into
sub floppy sized chunks, and keep it that way.  Would mean that you don't
have to spend forever inserting disks to get one file back.

4.  While there is some additional overhead for Next format vs Dos format, the
Next format is signficantly faster.  Many fewer yawns.

 
=> Sherwood Botsford                   sherwood@space.ualberta.ca <= 
=> University of Alberta         Lab Manager, Space Physics Group <=         
=> tel:403 492-3713                             fax: 403 492-4256 <=

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