Re: Want to clone/make backup cds for FC3 working system

[John Summerfied <debian@xxxxxxxxxxxxxxxxxxxxxx>]

Jeff Vian wrote:
> On Sun, 2005-05-08 at 21:44 -0700, Rick Lim wrote:
>
> > I want to either clone or make a "ghost" style image on cdr to copy a
> > working system to a new disk.
> >
> > > From searching it appears that Norton ghost cannot do FC3, I tried g4l and
> > it seems to have problems with LVM, mondo/mindi does not work with FC3.
> >
> > Any suggestions????
>
> A current version of Mondo does work with FC3.  I and others use it
> regularly.
Some years ago (about the time of Valhalla, maybe earlier) I took a look 
at the source code of mondo & mindi and saw lots of security problems - 
they stood out like dog's jewels.

The principal author didn't care, said it is "a disaster recovery tool," 
not "a backup tool."

Probably, there is some discussion of those concerns on one of the RH 
lists of the time.

More recently, I took a fresh look. It's much improved, but there are 
still some serious problems.

Basically, the problems I saw fall into the category "doesn't check 
user-supplied data."

It is capable of segfaulting through buffer overruns and probably also 
has problems with bad shell characters (such as ";", "&") and so on.

_I_ won't use it.

There is also DAR which can be found at sf.net.

I have my own script which creates a compessed ISO image using sfdisk, 
tar, mkzftree and mkisofs.


#!/bin/bash -xe
[ -d /mnt/backup ] || mkdir /mnt/backup
Image=/var/tmp/backup.img
umount /mnt/backup || :
rm -fr ${Image} /var/tmp/backup
dd if=/dev/zero of=${Image} count=0 bs=1024 \
        seek=$((3*1024*1024))
ls -shog ${Image}
mke2fs -Fq ${Image}
mount -o loop ${Image} /mnt/backup/
sfdisk >/etc/disktab -d /dev/hda
tar clC / --exclude=backup.img --exclude=/tmp --exclude=/mnt\/* 
--exclude=/var/lock --exclude=swapfil\* \
        --exclude=/var/autofs --exclude=lost+found --exclude=/var/tmp 
--exclude=/var/local --exclude=squid-cache \
        / /boot /home  /var \
        | buffer -m $((2*1024*1024)) -p 75\
        | tar xpC /mnt/backup
ls -go /mnt/backup
rm ${Image}
mkzftree --one-filesystem /mnt/backup/ /var/tmp/backup
umount /mnt/backup/
mkisofs -R -z -quiet -nobak -o /var/tmp/backup-${HOSTNAME}.iso 
/var/tmp/backup
rm -rf  /var/tmp/backup
ls -hog /var/tmp/backup*
scp -p /var/tmp/backup-${HOSTNAME}.iso backup.office.lan:/var/local/backups


Note that I create a filesystem image (to overcome limitations in 
mkzftree) and delete it before I've finished with it (to overcome 
limitations in mkzftree).



--

Cheers
John

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