oVirtBackup

This is a tool, written in Python, to make online fullbackup's of a VM which runs in an oVirt environment.

Requirements

It is necessery to install the oVirt Python-sdk.

http://www.ovirt.org/Python-sdk

Usage

backup.py -c config.cfg -d

-c ... Path to the config file
-d ... Debug flag

Configuration

Take a look at the example "config_example.cfg"

Workflow

• Create a snapshot
• Clone the snapshot into a new VM
• Delete the snapshot
• Export the VM to the NFS share
• Delete the VM

Useful tips

crontab

00  20  *   *   *   /home/backup/oVirtBackup.git/backup.py -c /home/backup/oVirtBackup.git/config_webserver.cfg -d >> /var/log/oVirtBackup/webserver.log 

Logrotate: /etc/logrotate.d/oVirtBackup

/var/log/oVirtBackup/* {
	daily
	rotate 14
	compress
	delaycompress
	missingok
	notifempty
}

Security

Set permissions to config.cfg only for the needed user (chmod 600 config.cfg).

TODO's

• When the ovirtsdk supports exporting a snapshot directly to a domain, the step of a VM creation can be removed to save some disk space during backup

Usefull links:

• http://www.ovirt.org/REST-Api
• http://www.ovirt.org/Python-sdk
• http://www.ovirt.org/Testing/PythonApi
• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.1/html-single/Developer_Guide/files/ovirtsdk.infrastructure.brokers.html#VMSnapshot