
Previous VNX driver implemented all array operations in driver, which complicated the drive logic. In this patch, we leverage a library named storops to interact with VNX array. New changes below: * Consolidate VNX driver entry, both FC and iSCSI driver use the same entry name: volume_driver = cinder.volume.drivers.emc.vnx.driver.EMCVNXDriver * A new driver option is introduced: storage_protocol = <fc|iscsi> * some existing bugs no longer existed. Co-authored-By: Tang Tina <tina.tang@emc.com> Co-authored-By: Liang Ryan <ryan.liang@emc.com> DocImpact Implements: blueprint new-vnx-driver Closes-bug: #1569245 Closes-bug: #1524160 Closes-bug: #1589338 Change-Id: I9f31db708b022b16debaa4f6c5a87d95e5ac2a4f
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