Over the weekend I wrote virt-back, a backup utility for QEMU, KVM, XEN, or Virtualbox guests.
virt-back is a python application that uses the libvirt API to safely shutdown, gzip, and restart guests.
The backup process logs to syslog for auditing and virt-back works great with cron for scheduling outages. Virt-back is in active development so feel free to give suggestions or branch the source.
virt-back has been placed in the public domain and the latest version may be downloaded here: https://bitbucket.org/russellballestrini/virt-backInstallation:
The fastest way to install virt-back is to use pip or setuptools.
sudo pip install virt-back or
sudo easy_install virt-back
sudo wget https://bitbucket.org/russellballestrini/virt-back/raw/tip/virt-back -O /usr/local/bin/virt-back
sudo chmod 755 /usr/local/bin/virt-backTest installation:
virt-back --helpExample cronjob:
15 2 * * 1 /usr/local/bin/virt-back --quiet --backup sagat 15 23 * * 5 /usr/local/bin/virt-back --quiet --backup mbisonManual:
russell@host:~$ virt-back --help Usage: virt-back [options] Options: -h, --help show this help message and exit -q, --quiet prevent output to stdout -d, --date append date to tar filename [default: no date] -g, --no-gzip do not gzip or tar the resulting files -a amount, --retention=amount backups to retain [default: 3] -p 'PATH', --path='PATH' backup path [default: '/KVMBACK'] -u 'URI', --uri='URI' optional hypervisor uri Actions for info testing: These options display info or test a list of guests. -i, --info info/test a list of guests (space delimited dom names) --info-all attempt to show info on ALL guests Actions for a list of dom names: WARNING: These options WILL bring down guests! -b, --backup backup a list of guests (space delimited dom names) -r, --reboot reboot a list of guests (space delimited dom names) -s, --shutdown shutdown a list of guests (space delimited dom names) -c, --create start a list of guests (space delimited dom names) Actions for all doms: WARNING: These options WILL bring down ALL guests! --backup-all attempt to shutdown, backup, and start ALL guests --reboot-all attempt to shutdown and then start ALL guests --shutdown-all attempt to shutdown ALL guests --create-all attempt to start ALL guests