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[Bug 1686999] [NEW] Instance with two attached volumes fails to start with error: Duplicate ID 'drive-ide0-0-0' for drive

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Saverio Proto <1686999@xxxxxxxxxxxxxxxxxx>
Date: Fri, 28 Apr 2017 11:10:15 -0000
Reply-to: Bug 1686999 <1686999@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

  
I imported into Openstack a Linux Centos machine. The instance does not have support for VirtIO. I had to import the boot disk as hda. Now I have this instance with two volumes attached, but when I try to boot the following XML is generated.

<disk type='network' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
  [..CUT...]
      <target dev='hda' bus='ide'/>
      <serial>c3841ee3-3f9a-457e-b504-d35e367a1193</serial>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='network' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
  [..CUT...]
      <target dev='vda' bus='ide'/>
      <serial>63e05c59-8de1-4908-a3dd-3f2261c82ea9</serial>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>

The machine does not boot, and in the nova-compute.log I find a
stacktrace.

2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     incoming.message))
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     result = func(ctxt, **new_args)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 110, in wrapped
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     payload)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 89, in wrapped
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return f(self, context, *args, **kw)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 359, in decorated_function
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     LOG.warning(msg, e, instance=instance)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 328, in decorated_function
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 409, in decorated_function
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 387, in decorated_function
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     kwargs['instance'], e, sys.exc_info())
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 375, in decorated_function
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2606, in start_instance
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._power_on(context, instance)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2579, in _power_on
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     block_device_info)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2623, in power_on
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._hard_reboot(context, instance, network_info, block_device_info)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2514, in _hard_reboot
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     vifs_already_plugged=True)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4926, in _create_domain_and_network
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     xml, pause=pause, power_on=power_on)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4857, in _create_domain
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     guest.launch(pause=pause)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 142, in launch
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._encoded_xml, errors='ignore')
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 137, in launch
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return self._domain.createWithFlags(flags)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     result = proxy_call(self._autowrap, f, *args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in proxy_call
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     rv = execute(f, *args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(c, e, tb)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     rv = meth(*args, **kwargs)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1065, in createWithFlags
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher libvirtError: internal error: process exited while connecting to monitor: [..CUT..] Duplicate ID 'drive-ide0-0-0' for drive

In liberty the two disked attached where marked as /dev/sda /dev/hdb,
and everything was working. In mitaka I see this behavior where the two
attachments are marked as /dev/sda and /dev/hda and the VM is not
booting.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1686999

Title:
  Instance with two attached volumes fails to start with error:
  Duplicate ID 'drive-ide0-0-0' for drive

Status in OpenStack Compute (nova):
  New

Bug description:
    
  I imported into Openstack a Linux Centos machine. The instance does not have support for VirtIO. I had to import the boot disk as hda. Now I have this instance with two volumes attached, but when I try to boot the following XML is generated.

  <disk type='network' device='disk'>
        <driver name='qemu' type='raw' cache='writeback'/>
    [..CUT...]
        <target dev='hda' bus='ide'/>
        <serial>c3841ee3-3f9a-457e-b504-d35e367a1193</serial>
        <address type='drive' controller='0' bus='0' target='0' unit='0'/>
      </disk>
      <disk type='network' device='disk'>
        <driver name='qemu' type='raw' cache='writeback'/>
    [..CUT...]
        <target dev='vda' bus='ide'/>
        <serial>63e05c59-8de1-4908-a3dd-3f2261c82ea9</serial>
        <address type='drive' controller='0' bus='0' target='0' unit='0'/>
      </disk>

  The machine does not boot, and in the nova-compute.log I find a
  stacktrace.

  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     incoming.message))
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     result = func(ctxt, **new_args)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 110, in wrapped
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     payload)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 89, in wrapped
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 359, in decorated_function
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     LOG.warning(msg, e, instance=instance)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 328, in decorated_function
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 409, in decorated_function
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 387, in decorated_function
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     kwargs['instance'], e, sys.exc_info())
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 375, in decorated_function
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2606, in start_instance
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._power_on(context, instance)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2579, in _power_on
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     block_device_info)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2623, in power_on
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._hard_reboot(context, instance, network_info, block_device_info)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2514, in _hard_reboot
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     vifs_already_plugged=True)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4926, in _create_domain_and_network
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     xml, pause=pause, power_on=power_on)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4857, in _create_domain
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     guest.launch(pause=pause)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 142, in launch
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self._encoded_xml, errors='ignore')
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     self.force_reraise()
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/guest.py", line 137, in launch
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     return self._domain.createWithFlags(flags)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 186, in doit
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 144, in proxy_call
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     rv = execute(f, *args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 125, in execute
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     six.reraise(c, e, tb)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 83, in tworker
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     rv = meth(*args, **kwargs)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1065, in createWithFlags
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
  2017-04-28 12:56:35.356 43378 ERROR oslo_messaging.rpc.dispatcher libvirtError: internal error: process exited while connecting to monitor: [..CUT..] Duplicate ID 'drive-ide0-0-0' for drive

  In liberty the two disked attached where marked as /dev/sda /dev/hdb,
  and everything was working. In mitaka I see this behavior where the
  two attachments are marked as /dev/sda and /dev/hda and the VM is not
  booting.

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Follow ups

[Bug 1686999] Re: Instance with two attached volumes fails to start with error: Duplicate ID 'drive-ide0-0-0' for drive
From: Sean Dague, 2017-07-28