Backups the old fashioned why

Backups the old fashioned why

[David Jackson]

Howdy --
Simple situation, how to back up servers across
a phone line (network):

I want to backup meatloaf to a tape drive attached
to gravy using a dialup connection. Can I specify
a hostname as part of the device? 

For instance on meatloaf:
find . -depth -print |cpio -o > gravy:/dev/rmt0

TIA,
David

Re: Backups the old fashioned why

[James]

On Tue, May 14, 2002 at 04:40:33PM -0600, David Jackson wrote:
| Howdy --
| Simple situation, how to back up servers across
| a phone line (network):
| 
| I want to backup meatloaf to a tape drive attached
| to gravy using a dialup connection. Can I specify
| a hostname as part of the device? 
| 
| For instance on meatloaf:
| find . -depth -print |cpio -o > gravy:/dev/rmt0

I assume TCP/IP is running between the two, so why not use SSH
(otherwise you're back to using Kermit or uucp). I think
you can (somehow) tunnel things through it. Somehow pipe the output
from cpio (or tar) into the tunnel, and it comes out the other end and
goes onto the tape.

A quick google turned this up: http://www.psychosis.com/datbkr/ maybe
it's useful?

I just hope you don't pay for your phone calls when backing up!

-- 
I will not burp in class  
 
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Re: Backups the old fashioned why

[Glynn Clements]

David Jackson wrote:

> Simple situation, how to back up servers across
> a phone line (network):
> 
> I want to backup meatloaf to a tape drive attached
> to gravy using a dialup connection. Can I specify
> a hostname as part of the device? 
> 
> For instance on meatloaf:
> find . -depth -print |cpio -o > gravy:/dev/rmt0

This won't work; the ">" operator is part of the shell, which doesn't
support the "host:path" syntax.

However, cpio itself (like tar) understands the "host:path" syntax
(this spawns "rsh" to connect to the specified host, so the remote
host needs to support rsh). So, you could use:

	find . -depth -print |cpio -o -O gravy:/dev/rmt0
or:
	find . -depth -print |cpio -o -O username@gravy:/dev/rmt0

-- 
Glynn Clements <glynn.clements@virgin.net>

Re: Backups the old fashioned why

[David Jackson]

Glynn --
Thanks for you reply, I new this was simple, I'm guessing dump would support a similar syntax ( man talks about rsh shell). Another question about dump,
is their a problem with dump and ext3 filesystems?

Thanks as always,
David


---------- Original Message ----------------------------------
From: Glynn Clements <glynn.clements@virgin.net>
Date: 	Tue, 14 May 2002 23:57:47 +0100

>
>David Jackson wrote:
>
>> Simple situation, how to back up servers across
>> a phone line (network):
>> 
>> I want to backup meatloaf to a tape drive attached
>> to gravy using a dialup connection. Can I specify
>> a hostname as part of the device? 
>> 
>> For instance on meatloaf:
>> find . -depth -print |cpio -o > gravy:/dev/rmt0
>
>This won't work; the ">" operator is part of the shell, which doesn't
>support the "host:path" syntax.
>
>However, cpio itself (like tar) understands the "host:path" syntax
>(this spawns "rsh" to connect to the specified host, so the remote
>host needs to support rsh). So, you could use:
>
>	find . -depth -print |cpio -o -O gravy:/dev/rmt0
>or:
>	find . -depth -print |cpio -o -O username@gravy:/dev/rmt0
>
>-- 
>Glynn Clements <glynn.clements@virgin.net>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: Backups the old fashioned why

[Glynn Clements]

David Jackson wrote:

> Thanks for you reply, I new this was simple, I'm guessing dump would
> support a similar syntax ( man talks about rsh shell). Another
> question about dump, is their a problem with dump and ext3
> filesystems?

I'm not sure. Certainly, dump is filesystem-specific. But, as ext3 is
so similar to ext2, it might not matter. I suggest trying to find
documentation which explicitly says whether dump works on ext3.

-- 
Glynn Clements <glynn.clements@virgin.net>