Hi
Rob Owens wrote:
I thought about something similar a while back. I never got anywhere
with it, but the plan was to use Knoppix or Knoppix-like technology to
have all the hardware automatically detected and configured at boot.
That way the hard drive could be installed in any machine and it would
work.
This info may be outdated: Knoppix has 3 configuration options for a
hard drive installation. The one you would want is called "Knoppix",
and it basically runs the live cd system on a hard drive. All the live
cd startup scripts run, so hardware is detected automatically.
I don't think Knoppix would be the best distro to use, due to its
mish-mash of repositories, but maybe a Debian live cd or Ubuntu live cd
would do the trick for you. I'm just not sure how to install them to
the hard drive in "Knoppix" mode.
The approach I am proposing is a little simpler than that, I only want
to have a bootable usb system which is equal to the backuppc system, and
which could easily replace it. Of course I will not have all the
hardware detection that the liveCDs do, so maybe somethings will still
be done "by hand".
Let me tell you what happened in my tests.
After 33 hours dd'ing the pool to the usb disk, it finally ended, so
I am really considering a eSata case, there is no way to wait 33 hours
each time I want to sync the server with the usb case.
My experience in booting the usb disk was successful, I had some
problems with grub and fstab, which I guess are not easy to avoid.
Depending on how many disks I have on the machine the device is
recognized as sdb, sdd, etc, so I should, at least, dinamically generate
the fstab file, which I am not willing to do right now. By now I could
live with this kind of manual operation.
Below you will find the script I made for doing the sync operation, this
is a very simple script which only solves my problem, but maybe this can
help others and maybe you could help improving it. Sorry for some
portuguese comments...
Rodrigo
#!/bin/bash
/etc/init.d/backuppc stop || exit
umount /var/lib/backuppc || exit
echo "Fazendo backup do /boot"
mount /dev/sdd1 /mnt/sdd1 || exit
time rsync -a --delete-after /boot/* /mnt/sdd1/
umount /mnt/sdd1
echo "Fazendo backup do barra"
mount /dev/sdd2 /mnt/sdd2 || exit
time rsync -ax --delete-after --exclude=/proc --exclude=/dev
--exclude=/sys --exclude=/mnt --exclude=/var/lib/backuppc --exclude=/tmp
/* /mnt/sdd2/
mkdir /mnt/sdd2/proc /mnt/sdd2/dev /mnt/sdd2/sys /mnt/sdd2/mnt
/mnt/sdd2/tmp /mnt/sdd2/var/lib/backuppc
chmod 777 /mnt/sdd2/tmp
chmod o+t /mnt/sdd2/tmp
## acertando o fstab
cat <<EOF > /mnt/sdd2/etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/sdb2 / reiserfs defaults 0 1
#/dev/sdb1 /boot reiserfs notail 0 2
/dev/sdb3 /var/lib/backuppc reiserfs defaults 0 2
/dev/sdb4 none swap sw,pri=1 0 0
/dev/hda /media/cdrom0 udf,iso9660 user,noauto 0 0
EOF
umount /mnt/sdd2
echo "Fazendo backup da area de dados do backuppc"
lvcreate -L1G -s -n bkp_snapshot /dev/vg/backup || exit
time dd if=/dev/vg/bkp_snapshot of=/dev/sdd3
lvremove -f /dev/vg/bkp_snapshot
mount /var/lib/backuppc
/etc/init.d/backuppc start
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