Ok, even though this can be done with many other methods, I’ll explain mine. I’ll also provide youtube videos for the procedure and demonstration as well.
Unlike offline backups, online backups require minimalist suspend – save – resume actions (hopefully within small amount of time – which depends your modifications and RAM usage) while taking the snapshot. The requirement for this suspend has similar reasons to live migration –state is hold and saved then it continues to execute.
As described in our offline backups post, we could take internal or external backups. But in this post we’ll discuss external backups particularly to take backups.