Hi guys,

I tried to play with the new rate-limiting feature however it doesn't work.
See below my setup.

root@openstack:~# uname -a
Linux openstack 3.8.0-33-generic #48~precise1-Ubuntu SMP Thu Oct 24 16:28:06 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

root@openstack:~# dpkg -l |grep -E 'nova|glance|cinder|libvirt'
ii  cinder-api                        1:2013.2-0ubuntu1~cloud0                            Cinder storage service - API server
ii  cinder-common                     1:2013.2-0ubuntu1~cloud0                            Cinder storage service - common files
ii  cinder-scheduler                  1:2013.2-0ubuntu1~cloud0                            Cinder storage service - Scheduler server
ii  cinder-volume                     1:2013.2-0ubuntu1~cloud0                            Cinder storage service - Volume server
ii  glance                            1:2013.2-0ubuntu1~cloud0                            OpenStack Image Registry and Delivery Service - Daemons
ii  glance-api                        1:2013.2-0ubuntu1~cloud0                            OpenStack Image Registry and Delivery Service - API
ii  glance-common                     1:2013.2-0ubuntu1~cloud0                            OpenStack Image Registry and Delivery Service - Common
ii  glance-registry                   1:2013.2-0ubuntu1~cloud0                            OpenStack Image Registry and Delivery Service - Registry
ii  libvirt-bin                       1.1.1-0ubuntu8~cloud2                               programs for the libvirt library
ii  libvirt0                          1.1.1-0ubuntu8~cloud2                               library for interfacing with different virtualization systems
ii  nova-api                          1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - API frontend
ii  nova-cert                         1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - certificate management
ii  nova-common                       1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - common files
ii  nova-compute                      1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - compute node
ii  nova-compute-kvm                  1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - compute node (KVM)
ii  nova-conductor                    1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - conductor service
ii  nova-consoleauth                  1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - Console Authenticator
ii  nova-network                      1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - Network manager
ii  nova-novncproxy                   1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - NoVNC proxy
ii  nova-scheduler                    1:2013.2-0ubuntu1~cloud0                            OpenStack Compute - virtual machine scheduler
ii  python-cinder                     1:2013.2-0ubuntu1~cloud0                            Cinder Python libraries
ii  python-cinderclient               1:1.0.6-0ubuntu1~cloud0                             python bindings to the OpenStack Volume API
ii  python-glance                     1:2013.2-0ubuntu1~cloud0                            OpenStack Image Registry and Delivery Service - Python library
ii  python-glanceclient               1:0.11.0-0ubuntu1~cloud0                            Client library for Openstack glance server.
ii  python-libvirt                    1.1.1-0ubuntu8~cloud2                               libvirt Python bindings
ii  python-nova                       1:2013.2-0ubuntu1~cloud0                            OpenStack Compute Python libraries
ii  python-novaclient                 1:2.15.0-0ubuntu1~cloud0                            client library for OpenStack Compute API

root@openstack:~# cinder qos-create high-read-low-write consumer="front-end" read_iops_sec=20 write_iops_sec=5
+----------+----------------------------------------------------+
| Property |                       Value                        |
+----------+----------------------------------------------------+
| consumer |                     front-end                      |
|    id    |        c5f2119e-3709-43c3-8eb3-4f90d9b3ea4a        |
|   name   |                high-read-low-write                 |
|  specs   | {u'write_iops_sec': u'5', u'read_iops_sec': u'20'} |
+----------+----------------------------------------------------+
root@openstack:~# cinder type-create slow
+--------------------------------------+------+
|                  ID                  | Name |
+--------------------------------------+------+
| d3080d3c-34d4-43af-8f05-b5921963537a | slow |
+--------------------------------------+------+
root@openstack:~# cinder qos-associate c5f2119e-3709-43c3-8eb3-4f90d9b3ea4a d3080d3c-34d4-43af-8f05-b5921963537a
root@openstack:~# cinder create --display-name slow --volume-type slow 1
+---------------------+--------------------------------------+
|       Property      |                Value                 |
+---------------------+--------------------------------------+
|     attachments     |                  []                  |
|  availability_zone  |                 nova                 |
|       bootable      |                false                 |
|      created_at     |      2013-12-11T10:18:55.463877      |
| display_description |                 None                 |
|     display_name    |                 slow                 |
|          id         | 58b47e19-0368-4c06-addc-a967760f4d60 |
|       metadata      |                  {}                  |
|         size        |                  1                   |
|     snapshot_id     |                 None                 |
|     source_volid    |                 None                 |
|        status       |               creating               |
|     volume_type     |                 slow                 |
+---------------------+--------------------------------------+

root@openstack:~# cinder create --display-name slow --volume-type slow 1
+---------------------+--------------------------------------+
|       Property      |                Value                 |
+---------------------+--------------------------------------+
|     attachments     |                  []                  |
|  availability_zone  |                 nova                 |
|       bootable      |                false                 |
|      created_at     |      2013-12-11T10:21:14.377581      |
| display_description |                 None                 |
|     display_name    |                 slow                 |
|          id         | 2e589abc-a008-4433-89ae-1bb142b139e3 |
|       metadata      |                  {}                  |
|         size        |                  1                   |
|     snapshot_id     |                 None                 |
|     source_volid    |                 None                 |
|        status       |               creating               |
|     volume_type     |                 slow                 |
+---------------------+--------------------------------------+

root@openstack:~# cinder list
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
|                  ID                  |   Status  | Display Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+
| 2e589abc-a008-4433-89ae-1bb142b139e3 | available |     slow     |  1   |     slow    |  false   |             |
+--------------------------------------+-----------+--------------+------+-------------+----------+-------------+

root@openstack:~# nova list
+--------------------------------------+------+--------+------------+-------------+----------------+
| ID                                   | Name | Status | Task State | Power State | Networks       |
+--------------------------------------+------+--------+------------+-------------+----------------+
| 4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322 | vm   | ACTIVE | None       | Running     | vmnet=10.0.0.2 |
+--------------------------------------+------+--------+------------+-------------+----------------+
root@openstack:~# nova volume-attach vm 2e589abc-a008-4433-89ae-1bb142b139e3 /dev/vdb
+----------+--------------------------------------+
| Property | Value                                |
+----------+--------------------------------------+
| device   | /dev/vdb                             |
| serverId | 4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322 |
| id       | 2e589abc-a008-4433-89ae-1bb142b139e3 |
| volumeId | 2e589abc-a008-4433-89ae-1bb142b139e3 |
+----------+--------------------------------------+

root@openstack:~# virsh list
 Id    Name                           State
----------------------------------------------------
 2     instance-00000002              running

root@openstack:~# virsh xmldump instance-00000002
error: unknown command: 'xmldump'
root@openstack:~# virsh dumpxml instance-00000002
<domain type='qemu' id='2'>
  <name>instance-00000002</name>
  <uuid>4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322</uuid>
  <memory unit='KiB'>131072</memory>
  <currentMemory unit='KiB'>131072</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>2013.2</entry>
      <entry name='serial'>a81b78b3-4044-4157-acd2-3b8c2939f915</entry>
      <entry name='uuid'>4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-1.5'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322/disk'/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <disk type='network' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <auth username='volumes'>
        <secret type='ceph' uuid='95c98032-ad65-5db8-f5d3-5bd09cd563ef'/>
      </auth>
      <source protocol='rbd' name='volumes/volume-2e589abc-a008-4433-89ae-1bb142b139e3'>
        <host name='192.168.251.100' port='6790'/>
      </source>
      <target dev='vdb' bus='virtio'/>
      <serial>2e589abc-a008-4433-89ae-1bb142b139e3</serial>
      <alias name='virtio-disk1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/var/lib/nova/instances/4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322/disk.config'/>
      <target dev='hdd' bus='ide'/>
      <readonly/>
      <alias name='ide0-1-1'/>
      <address type='drive' controller='0' bus='1' target='0' unit='1'/>
    </disk>
    <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'>
      <alias name='pci0'/>
    </controller>
    <controller type='ide' index='0'>
      <alias name='ide0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='bridge'>
      <mac address='fa:16:3e:d3:2e:90'/>
      <source bridge='br100'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <driver name='qemu'/>
      <filterref filter='nova-instance-instance-00000002-fa163ed32e90'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='file'>
      <source path='/var/lib/nova/instances/4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322/console.log'/>
      <target port='0'/>
      <alias name='serial0'/>
    </serial>
    <serial type='pty'>
      <source path='/dev/pts/3'/>
      <target port='1'/>
      <alias name='serial1'/>
    </serial>
    <console type='file'>
      <source path='/var/lib/nova/instances/4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322/console.log'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1' keymap='en-us'>
      <listen type='address' address='127.0.0.1'/>
    </graphics>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <alias name='video0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='dynamic' model='apparmor' relabel='yes'>
    <label>libvirt-4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322</label>
    <imagelabel>libvirt-4601cdd3-9cf9-4bd3-bf0c-0c95cb4a2322</imagelabel>
  </seclabel>
</domain>

This is a bit redundant but this is the nova's log:

2013-12-11 10:22:27.712 DEBUG nova.virt.libvirt.config [req-4f87e00d-8a8b-4e23-8652-055c28e399bb admin admin] Generated XML <disk type="network" device="disk">
  <driver name="qemu" type="raw" cache="none"/>
  <source protocol="rbd" name="volumes/volume-2e589abc-a008-4433-89ae-1bb142b139e3">
    <host name="192.168.251.100" port="6790"/>
  </source>
  <auth username="volumes">
    <secret type="ceph" uuid="95c98032-ad65-5db8-f5d3-5bd09cd563ef"/>
  </auth>
  <target bus="virtio" dev="vdb"/>
  <serial>2e589abc-a008-4433-89ae-1bb142b139e3</serial>
</disk>

After discussing and debugging this with winston-d, he found the bug.