Backing up data to span multiple CDs K3B 0.11.23 cd-record 1.2? Fedora 4 kernel 2.6.12 – reposted from September

Hi,

Is it possible to use K3B to back up data that is
over 700MB in size so that it spans multiple backup
CDs? I remember zip used to be able to span backups
across multiple floppy disks.

Thanks

Clive

[John Summerfield]

Clive at Rational wrote:
> Hi,
>
> Is it possible to use K3B to back up data that is
> over 700MB in size so that it spans multiple backup
> CDs? I remember zip used to be able to span backups
> across multiple floppy disks.

I don't know: I don't use K3B.

I do use mkzftree to make a compressed tree of files and then mkisofs to 
create an ISO image. Typically, that gets well over 700 Mb to a CD which 
is directly readable on Linux but not other systems (they need to 
manually decompress the files), but only postpones the problem.

DVDs are a good alternative to CDs: bigger and (according to the specs 
on the side of my box) four times as fast. They (and the media) are 
cheap, maybe for your volumes of data cheaper than CD, but again, they 
only postpone the problem.

DAR (see sf.net) can create multivolume archives.
So can mondo, but the code's still pretty terrible and I have doubts 
about its safety if there are "bad" filenames around.

I quite like external USB2 drives: I can back up my whole 80 Gb drive in 
my laptop at 14 Mbyte/sec. Tarballs, ISO images or whatever of ones 
valuables on an external laptop drive has to be pretty convenient, or 
you can go for the largest ATA drive you can find and put that in an 
enclosure.

[Mike McCarty]

Clive at Rational wrote:
> Hi,
>
> Is it possible to use K3B to back up data that is
> over 700MB in size so that it spans multiple backup
> CDs? I remember zip used to be able to span backups
> across multiple floppy disks.

Umm, PKZIP can do that. If that's what you really
want, then you can try running DOSBOX or DOSEMU.

Another possibility is zip + zipsplit.

Mike

[John Summerfield]

Mike McCarty wrote:
> Clive at Rational wrote:
> > Hi,
> >
> > Is it possible to use K3B to back up data that is
> > over 700MB in size so that it spans multiple backup
> > CDs? I remember zip used to be able to span backups
> > across multiple floppy disks.
>
> Umm, PKZIP can do that. If that's what you really
> want, then you can try running DOSBOX or DOSEMU.
>
> Another possibility is zip + zipsplit.
>
> Mike

Come to think of it, tar an other archive utilities can do it: you need 
to specify the size of the "tape volume" and maybe use a script to do 
stuff with the files it creates it.

It doesn't (or didn't when I looked years ago) hand compressed output 
well as the size you provide relates to input sizes.

afio (not a standard component) is better as it can create compresses 
archives sized on the output size.

[Jeff Vian]

On Fri, 2005-12-30 at 09:42 +0800, John Summerfied wrote:
> Mike McCarty wrote:
> > Clive at Rational wrote:
> > > Hi,
> > >
> > > Is it possible to use K3B to back up data that is
> > > over 700MB in size so that it spans multiple backup
> > > CDs? I remember zip used to be able to span backups
> > > across multiple floppy disks.
> >
> > Umm, PKZIP can do that. If that's what you really
> > want, then you can try running DOSBOX or DOSEMU.
> >
> > Another possibility is zip + zipsplit.
> >
> > Mike

Mondorescue is a great tool for doing backups of specified size (CD,
DVD, Tape, etc.).

http://mondorescue.berlios.de/ is the current site for downloads.  
http://www.mondorescue.org/ was the original site and has some
information on it.
> Come to think of it, tar an other archive utilities can do it: you need 
> to specify the size of the "tape volume" and maybe use a script to do 
> stuff with the files it creates it.
>
> It doesn't (or didn't when I looked years ago) hand compressed output 
> well as the size you provide relates to input sizes.
>
> afio (not a standard component) is better as it can create compresses 
> archives sized on the output size.
>
> --
>
> Cheers
> John
>
> -- spambait
> [e-mail]  [e-mail]
> Tourist pics http://portgeographe.environmentaldisasters.cds.merseine.nu/
>
> do not reply off-list

[Chasecreek Systemhouse]

On 12/29/05, Jeff Vian  wrote:
> http://www.mondorescue.org/ was the original site and has

Also, in a crunch, use mke2fs and specify the filesystem size to be a
CD or a DVD (or a 40GB DAT, etc etc...)

Plenty of backup options under Linux...

Historically you only need to backup /etc /home and related -- backing
up the whole filesystem daily or weekly is not recommended.  The only
time I make a complete partition backup is immediately after system
build to blue print the installed drive and I use BING
(http://www.terabyteunlimited.com/) for that.

--
WC -Sx- Jones | http://ccsh.us/ | Open Source Consulting

[Mike McCarty]

Chasecreek Systemhouse wrote:
> On 12/29/05, Jeff Vian  wrote:
> > http://www.mondorescue.org/ was the original site and has
>
> Also, in a crunch, use mke2fs and specify the filesystem size to be a
> CD or a DVD (or a 40GB DAT, etc etc...)
>
> Plenty of backup options under Linux...

Too many, IMO, and none of them quite adequate for all use.
> Historically you only need to backup /etc /home and related -- backing

Hmm. I include /usr/opt, /usr/local and /var (at least parts of /var,
anyway).

[snip]

Mike