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Date:      Mon, 27 Aug 2001 16:21:22 +0300
From:      Ruslan Ermilov <ru@FreeBSD.ORG>
To:        Bob Hall <rjhalljr@starpower.net>
Cc:        FreeBSD <freebsd-questions@FreeBSD.ORG>
Subject:   Re: Using dvd-ram for backup
Message-ID:  <20010827162122.B53928@sunbay.com>
In-Reply-To: <20010827085932.A211@starpower.net>; from rjhalljr@starpower.net on Mon, Aug 27, 2001 at 08:59:32AM -0400
References:  <20010827085932.A211@starpower.net>

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On Mon, Aug 27, 2001 at 08:59:32AM -0400, Bob Hall wrote:
> Has anyone used dvd-ram for backup? I've been searching the 
> FreeBSD site and my books for several days, and I haven't 
> been able to come up with the magic combination of keystrokes 
> that will persuade FreeBSD to write to a dvd-ram device.
> 
> My system is 4.3 release. I've tried using newfs to create 
> a Unix file system on the disk:
> 	# newfs -v /dev/rcd0c
> but I get an error message that it can't write the disk 
> label. I've tried using disklabel and received the save 
> message.
> 
I found this message to be harmless.  I.e., after newfs(8)
run, I can use the `c' partition of the DVD RAM media as I
would use it on my hard drive.  It was also my understanding
that for DVD RAM, FreeBSD constructs a fake disklabel, on
the fly, hence no need to write it to the media.

> I've tried 
> 	# dump -f /dev/rcd0c /usr
> but it tells me that I need 12 volumes. My entire file 
> system takes up less than half of one side of a dvd disk.
> 
Haven't tried to dump(8) to it yet.


Cheers,
-- 
Ruslan Ermilov		Oracle Developer/DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
http://www.oracle.com	Enabling The Information Age

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