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Container, volume and block concepts

Question asked by mo_ on Sep 6, 2012
Latest reply on Sep 7, 2012 by Ted Dunning
I am trying to understand the basic concepts of Containers and it's difficult to find it anywhere.

1) What's the relationship between a volume and a container? Does one container have information about only one volume?

2) Is data container only used for configuration, but does it change if a node goes down? How is this handled since it looks like data container used mapping between master and replica nodes?

3) If I have a path /dir/vol1/vol2 and I take a snapshot on vol1 then does it also takes snapshot on vol2?

4) What's the best practice around creating volumes and subvolumes?