Unfortunately, the CentOS 5.5 final release and repositories do not support vzdump out of the box. However, some research and hints in other blogs finally led me to a running solutions.
wget http://download.openvz.org/contrib/utils/vzdump/vzdump-1.2-4.noarch.rpm
wget http://dag.wieers.com/rpm/packages/cstream/cstream-2.7.4-3.el4.rf.x8664.rpm
wget http://dag.wieers.com/rpm/packages/perl-LockFile-Simple/perl-LockFile-Simple-0.206-1.el5.rf.noarch.rpm
rpm -i cstream-2.7.4-3.el4.rf.x8664.rpm
rpm -i perl-LockFile-Simple-0.206-1.el5.rf.noarch.rpm
rpm -i vzdump-1.2-4.noarch.rpm
export PERL5LIB=/usr/share/perl5/
That’s it.
vzdump --suspend --compress --all --mailto cybr@haite.ch
INFO: Starting Backup of VM 103 (openvz)
INFO: CTID 103 exist mounted running
INFO: status = CTID 103 exist mounted running
INFO: backup mode: suspend
INFO: bandwidth limit: 10240 KB/s
INFO: starting first sync /vz/private/103/ to /vz/dump/vzdump-openvz-103-20100906-211257.tmp
...
CYBR's Blog 