long waiting for get_volumes_by_pool request

[ArbelNathan]

our creation process takes a long time (about 45 sec, whereas in comparison it only takes about 5 sec via the SVC storage family)
we timed the get_volumes_by_pool command on dscli client vs pyds8k vs postman on pool with 240 vols and then on pool with 4 vols for comparison and fun.

results:
with 244 vols:
dscli client: 17s
pyds8k: 26s
postman: 24s

with 4 vols:
dscli client: 15s
pyds8k: 4.5s
postman: 4s

we can see that pyds8k is not giving us worst performance than the postman (which uses rest as well) so if there is a problem it's with the rest itself

[ArbelNathan]

we are using get_volumes_by_pool to find volumes by name
is there any other way to find volumes by name?

[ArbelNathan]

As the CSI work and get retries due to timeouts from k8s the waiting time for the command can reach over 2.5m.