b50b70a182
In Pike, we began setting disk unit values manually for the
'virtio-scsi' controller model in order to allow up to 256 devices [1].
We do this by setting the disk unit of the address tag manually for the
guest config. If we do not set the address tag manually, libvirt would
autogenerate it for us.
A problem occurs when a user has a SCSI disk that is a volume or isn't
using the 'virtio-scsi' controller model because we're not guarding our
manual setting of the address tag in the guest config by the disk unit,
in addition to the SCSI bus. This means that for a SCSI volume, we
generate an address tag like '<address type="drive" controller="0"/>'
for any SCSI volume, so a user with more than one device will get the
following error when they try to boot an instance:
Failed to start libvirt guest: libvirtError: unsupported
configuration: Found duplicate drive address for disk with target name
'sda' controller='0' bus='0' target='0' unit='0'
This updates the conditionals to only manually set the address tag if
the bus is SCSI _and_ the disk unit has been specified. Otherwise, let
libvirt autogenerate the address tag and take care of avoiding
collisions.
[1] https://bugs.launchpad.net/nova/+bug/1686116
Closes-Bug: #1792077
Conflicts:
nova/tests/unit/virt/libvirt/volume/test_volume.py
NOTE(melwitt): Conflict is due to not having change
Ibfa64f18bbd2fb70db7791330ed1a64fe61c1355 in Pike.
Change-Id: Iefab05e84ccc0bf8f15bdbbf515a290d282dbc5d
(cherry picked from commit
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| .. | ||
| functional | ||
| live_migration/hooks | ||
| unit | ||
| __init__.py | ||
| fixtures.py | ||
| uuidsentinel.py | ||