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[sahid <sferdjao@xxxxxxxxxx>]

Public bug reported:

When using virtio-scsi we should be able to attach up to 256 devices but
because the XML device definition do not specify which controller to use
and place on that on that one, we are currently able to attach no more
than 6 disks.

step to reproduce the issue:

- glance image-update --property hw_scsi_model=virtio-scsi <image>" to creates the virtio-scsi controller
- glance image-update --property hw_disk_bus=scsi <image>" disks will be using scsi

Start instance with more than 6 disks/volumes

** Affects: nova
     Importance: Undecided
     Assignee: sahid (sahid-ferdjaoui)
         Status: In Progress


** Tags: libvirt

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https://bugs.launchpad.net/bugs/1686116

Title:
  domain xml not well defined when using virio-scsi disk bus

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  When using virtio-scsi we should be able to attach up to 256 devices
  but because the XML device definition do not specify which controller
  to use and place on that on that one, we are currently able to attach
  no more than 6 disks.

  step to reproduce the issue:

  - glance image-update --property hw_scsi_model=virtio-scsi <image>" to creates the virtio-scsi controller
  - glance image-update --property hw_disk_bus=scsi <image>" disks will be using scsi

  Start instance with more than 6 disks/volumes

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