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[Jose Phillips <1949224@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

===========
When you use cinder volume-type to limit iops on the frontend work as expected when you create a instance however if you resize the volume the IOPS limit is not updating on the instance.

Steps to reproduce
==================
1.Create a Volume-type with Associated QoS Spec
2.Create a Qos Spec with frontend and specs total_iops_sec_per_gb=3
3.associate this QoS to Volume Type
4.Create a new instance with a 100GB volume these new volume type you will notice in KVM the following configuration.
      <iotune>
        <total_iops_sec>300</total_iops_sec>
      </iotune>

5.stop the instance
6.cinder extend <Volume> 300
7.start the instance


Expected result
===============
After the instance is started KVM should update the total_iops_sec to <total_iops_sec>900</total_iops_sec>

Actual result
=============
the total_iops_sec keeps with the original configuration when the computer was provisioned.

Environment
===========
1.Openstack Train
2.KVM
2. NFS

** Affects: nova
     Importance: Undecided
         Status: New

-- 
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https://bugs.launchpad.net/bugs/1949224

Title:
  Nova is not updating IOPS configuration if you perform a volume resize
  on cinder

Status in OpenStack Compute (nova):
  New

Bug description:
  ===========
  When you use cinder volume-type to limit iops on the frontend work as expected when you create a instance however if you resize the volume the IOPS limit is not updating on the instance.

  Steps to reproduce
  ==================
  1.Create a Volume-type with Associated QoS Spec
  2.Create a Qos Spec with frontend and specs total_iops_sec_per_gb=3
  3.associate this QoS to Volume Type
  4.Create a new instance with a 100GB volume these new volume type you will notice in KVM the following configuration.
        <iotune>
          <total_iops_sec>300</total_iops_sec>
        </iotune>

  5.stop the instance
  6.cinder extend <Volume> 300
  7.start the instance


  Expected result
  ===============
  After the instance is started KVM should update the total_iops_sec to <total_iops_sec>900</total_iops_sec>

  Actual result
  =============
  the total_iops_sec keeps with the original configuration when the computer was provisioned.

  Environment
  ===========
  1.Openstack Train
  2.KVM
  2. NFS

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