Exadata Compute node System Backup using LVM Snapshots

Below is the sample shell script to backup compute nodes (system only) on Exadata. It’s not very dynamic so change tar location, snap volume names etc as per your environment.

#!/bin/ksh

SHOW_USAGE() {
   echo "Usage: lvmsnap_backup.sh <computenode> "
   exit 1
}


computenode=$1
export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

#Create snapshot
lvcreate -L2G -s -n root_snap /dev/VGExaDb/LVDbSys1
lvcreate -L10G -s -n u01_snap /dev/VGExaDb/LVDbOra1

#Mount Snap volumes
mkdir /mnt/snap
mkdir /mnt/snap/root
mkdir /mnt/snap/u01
mount /dev/VGExaDb/root_snap /mnt/snap/root
mount /dev/VGExaDb/u01_snap /mnt/snap/u01

#Backup Snapshots
cd /zfs/fhrestore01/restore01
tar -pjcvf /zfs/fhrestore01/restore01/${computenode}_system_backup_$(date +%m%d%y).tar.bz2 /mnt/snap/* /boot --exclude /zfs/fhrestore01/restore01/${computenode}_system_backup_$(date +%m%d%y).tar.bz2 >/zfs/fhrestore01/restore01/${computenode}_system_backup_$(date +%m%d%y).stdout 2> /zfs/fhrestore01/restore01/${computenode}_system_backup_$(date +%m%d%y).stderr



#Unmount and drop temporary partition
umount /mnt/snap/u01
rmdir  /mnt/snap/u01
umount /mnt/snap/root
rmdir  /mnt/snap/root
lvremove -f /dev/VGExaDb/root_snap
lvremove -f /dev/VGExaDb/u01_snap
rmdir /mnt/snap

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