On Thu, May 3, 2007 8:14 am, D. Karapiperis wrote:
> Hi there,
>
> I am using tar to backup the whole system (specific directorues
> usr,lib,sbin,etc,var,home,root).
> On bare metal recovery I install the minimal portion of the syetm and then
> I throw the tarballs.
>
> Any opinions?
I'm a fan of full system backups, cause it requires minimal thought
process and will cover for most types of failures. If your using LVM and
have a second hard drive, here is a script I made that's been tested to
full recovery. Can do many variations of it. Can even back up to an nfs
share, ftp/sftp it to a remote location, etc.
I automate daily full backups, completely hands off maintainance free. :)
script:
----------<snip>
#!/bin/sh
BKUPDISK="hdb1" #This is the 2nd hd for the backups to go
MAXDISKSPACE="75" # This is the variable of max acceptable disk
usage in whole percent value
mkdir /mnt/bkupfull
chmod 700 /mnt/bkupfull
mkdir /mnt/"$BKUPDISK"
chmod 700 /mnt/"$BKUPDISK"
lvcreate -L1G -s -n fullbkup /dev/VolGroup00/LogVol00
mount /dev/VolGroup00/fullbkup /mnt/bkupfull
mount /dev/"$BKUPDISK" /mnt/"$BKUPDISK"
DISKFULL="`df -h /dev/"$BKUPDISK" | tail -1 | awk '{print $5}' | awk -F
"%" '{print $1}'`" # The disk space of backup disk
# Keep deleting oldest 2 backups until backup disk disk space is under
specified used space
while [ $DISKFULL -gt $MAXDISKSPACE ]
do
rm -rf `ls -t /mnt/"$BKUPDISK"/*.dump | tail -2`
DISKFULL="`df -h /dev/"$BKUPDISK" | tail -1 | awk '{print $5}' |
awk -F "%" '{print $1}'`"
done
dump -h 0 -y -f /mnt/"$BKUPDISK"/`date '+%F''-%R'`_boot.dump /dev/hda1
dump -h 0 -y -f /mnt/"$BKUPDISK"/`date '+%F''-%R'`_full.dump
/dev/VolGroup00/fullbkup
chmod 600 /mnt/"$BKUPDISK"/*
umount /mnt/"$BKUPDISK"
umount /mnt/bkupfull
lvremove -f /dev/VolGroup00/fullbkup
------</snip>
SOP:
-----<snip>
FULL BACKUP:
lvcreate -L4G -s -n fullbkup /dev/VolGroup00/LogVol00
mount /dev/VolGroup00/fullbkup /mnt/bkupfull
mount /dev/hdb1 /mnt/hdb1
dump -h 0 -f /mnt/hdb1/fullbkup.dump /dev/VolGroup00/fullbkup
dump -h 0 -f /mnt/hdb1/boot.dump /dev/hda1
umount /mnt/hdb1
umount /mnt/bkupfull
lvremove /dev/VolGroup00/fullbkup
-------------
RESTORING
fdisk /dev/hda
# fdisk -l
Disk /dev/hda: 20.5 GB, 20576747520 bytes
255 heads, 63 sectors/track, 2501 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 1300 10337827+ 8e Linux LVM
/dev/hda3 1301 2501 9647032+ 83 Linux
mkfs -t ext3 /dev/hda1
mkfs -t ext3 /dev/hda3
pvcreate /dev/hda2
vgcreate VolGroup00 /dev/hda2
vgscan
vgchange -ay
lvcreate -L8G -n LogVol00 VolGroup00
lvcreate -L1.75G -n LogVol01 VolGroup00
lvresize -L +108M /dev/VolGroup00/LogVol00
mkswap /dev/VolGroup00/LogVol01
mkfs -t ext3 /dev/VolGroup00/LogVol00
restore -rf /mnt/hda3/boot.dump
restore -rf /mnt/hda3/bkupfull.dump
rm restoresymtable
e2label /dev/hda1 /boot
------
Tyep "grub"
root (hd0,0)
setup (hd0)
quit
reboot
------</snip>