OpenVZ backup container to a single file while it's running using "vzdump" -
OpenVZ backup container to a single file while it's running using "vzdump"
Proxmox has made this free utility to backup running OpenVZ containers. It's a great program which is actually just a PERL script but gets the job done. This program is not 100% required because all it really does is cp -a from your container's path as far as I know but it is still good to have uniformity to how you backup your containers.
For RPM distros such as Centos/RHEL/Fedora etc.. download and install this:
wget http://www.proxmox.com/cms_proxmox/cms/upload/vzdump/vzdump-1.1-2.noarch.rpm; rpm -ivh vzdump-1.1-2.noarch.rpm
For Debian based distros like Ubuntu etc.. download and install this:
wget http://www.proxmox.com/cms_proxmox/cms/upload/vzdump/vzdump_1.1-2_all.deb; dpkg -i vzdump_1.1-2_all.deb
Unknown option: help
usage: /usr/sbin/vzdump OPTIONS [--all | VPSID]
--exclude VPSID exclude VPSID (assumes --all)
--exclude-path REGEX exclude certain files/directories
--stdexcludes exclude temorary files and logs
--compress compress dump file (gzip)
--dumpdir DIR store resulting files in DIR
--tmpdir DIR store temporary files in DIR
--mailto EMAIL send notification mail to EMAIL.
--quiet be quiet.
--stop stop/start VPS if running
--suspend suspend/resume VPS when running
--snapshot use LVM snapshot when running
--size MB LVM snapshot size
--node CID only run on pve cluster node CID
--lockwait MINUTES maximal time to wait for the global lock
--stopwait MINUTES maximal time to wait until a VM is stopped
--bwlimit KBPS limit I/O bandwidth; KBytes per second
--restore FILENAME restore FILENAME
Real Life Usage To Dump/Backup an OpenVZ Container
*note that since I chose --compress (why not compress right?) that the file will actually be:
vzdump --compress 5000
INFO: Starting new backup job - vzdump --compress 5000
INFO: Starting Backup of VM 2000 (openvz)
INFO: status = CTID 5000 exist mounted running
WARN: online backup without stop/suspend/snapshot
WARN: this can lead to inconsistent data
INFO: creating archive '/vz/dump/vzdump-5000.dat' (/vz/private/5000)
To Restore The OpenVZ Backup
vzrestore /vz/dump/vzdump-5000.tgz 5000
*note that if you specify something different eg. 10000 as the VPSID it will restore to that container.