volume type extra specs. horizon/cinder enhancements

Create Volume Type Enhancement

Get Volume Backend Names

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Volume Type Extra Specs Enhancement

Get Supported Extra Specs

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Scenario 1: no backend name

Option A – offers no keys (current)Option B – offers keys from all drivers (future)

After: option A

After: option B

Scenario 2: one backend name

[group1]volume_backend_name = foovolume_driver = cinder.volume.drivers.san.hp .hp_3par_fc.HP3PARFCDriver

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Scenario 3: shared one backend name

[group1]volume_backend_name = foovolume_driver = cinder.volume.drivers.san.hp .hp_3par_fc.HP3PARFCDriver

[group2]volume_backend_name = foovolume_driver = cinder.volume.drivers.san.hp .hp_3par_iscsi.HP3PARISCSIDriver

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Scenario 4: two backend names[group1]

volume_backend_name = foovolume_driver = cinder.volume.drivers.san.hp .hp_3par_fc.HP3PARFCDriver

[group2]volume_backend_name = foovolume_driver = cinder.volume.drivers.san.hp .hp_3par_iscsi.HP3PARISCSIDriver

[group3]volume_backend_name = barvolume_driver = cinder.volume.drivers.san.hp .hp_lefthand_iscsi.HPLeftHandISCSIDriver

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