point-in-time copypoint-in-time copy (snapshop software)?

Do you ever actually try and research these questions yourself? You come on here post some vague, often one line question without any context, and it seems like you have not even heard of things like Google. One of the whole things with Linux and open source is that you should actually look into these things yourself a bit.

In answer to your question; you should be able to LVM snapshots with most modern Linux OSes and it's not that difficult to script up something to do it as well.
 
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