From: Alberto E. <al...@bi...> - 2010-10-04 16:42:44
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Hi, i'd like to announce the relase of a plugin for the backup of LVM partitions. I developed this scripts to handle the backup of my virtual servers. This is an extract of the documentation: While doing backups of virtual servers, there are typically two critical requirements: 1. to have almost zero downtime for the services running on the virtual machine (suppose that the machine is a web server or a database server); 2. the backup must be done syncing the file system in a consistent status; a typical example is a database server that must be copied when the processes are idle, the cache is flushed and there is no stale data around. These two requirements are conflicting: stopping the critical processes for the time required by the backup is likely to cause a long downtime of the services. This BackupPC add-on helps you in solving this problem, by leveraging on the snapshot features of LVM. The scripting framework will quickly take a snapshot of the virtual machines in idle status and, while the services become up again, the backup system can take a backup of the frozen snapshot system safely. At the end of the process we will have a backup of any virtual machine with a service downtime of the order of few seconds. I have been used this system over the past years so i can say that it works pretty well for my xen virtual machines. I'm waiting for the authorization to publish the documentation in the backuppc wiki; for now you can find all the informations about this product here: http://www.biodec.com/tools/software/backuppc-lvm Kind regards. Alberto Eusebi |