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The scheduler will go through all the nodes as per
topology information and it will pick the node which has less
volume provisioned in the given pool.
lets say there are 2 nodes node1 and node2 with below pool configuration :-
So if application is using pool1 as shown in the below storage class, then ZFS driver will schedule it on node2 as it has one volume as compared to node1 which has 2 volumes in pool1.
So if application is using pool2 as shown in the below storage class, then ZFS driver will schedule it on node1 as it has one volume only as compared node2 which has 2 volumes in pool2.
In case of same number of volumes on all the nodes for the given pool, it can pick any node and schedule the PV on that.
Signed-off-by: Pawan pawan@mayadata.io