27 Nov
2013
27 Nov
'13
5:23 p.m.
On 11/27/2013 4:24 AM, Martijn Grendelman wrote:
The problem with snapshot-based backups is, that they are usually only crash-consistent, meaning that they contain the state of a system's disks as they would be if you pulled the power plug on a server. If you restore a system from this type of backup, you would see file system recovery happening at the first boot, and you risk data loss from -for example- database servers.
The work-around for this is to SSH into the guest first, put the database into backup mode(maybe run sync a time or two to flush out as much from RAM as possible), take the snap shot, ssh back in to resume the database, backup the snap, delete the snap.