[libvirt] [PATCH v3] conf: Generate address for scsi host device automatically

[Osier Yang]

On 31/05/13 22:09, Eric Blake wrote:
> On 05/31/2013 04:09 AM, Osier Yang wrote:
>> With unknown good reasons, the attribute "bus" of scsi device
>> address is always set to 0, same for attribute "target". (See
>> virDomainDiskDefAssignAddress).
>>
>> Though we might need to change the algorithm to honor "bus"
>> and "target" too, that's a different issue. The address generator
>> for scsi host device in this patch just follows the unknown
>> good reasons, only considering the "controller" and "unit".
>> It walks through all scsi controllers and their units, to see
>> if the address $controller:0:0:$unit can be used (if not used
>> by any disk or scsi host device yet), if found one, it sits on
>> it, otherwise, it creates a new controller (actually the controller
>> is implicitly created by someone else), and sits on
>> $new_controller:0:0:0 instead.
> ACK.
>
>>   src/conf/domain_conf.c                             | 202 ++++++++++++++++++---
>>   .../qemuxml2argv-hostdev-scsi-autogen-address.xml  |  95 ++++++++++
>>   ...qemuxml2xmlout-hostdev-scsi-autogen-address.xml | 106 +++++++++++
>>   tests/qemuxml2xmltest.c                            |   2 +
>>   4 files changed, 375 insertions(+), 30 deletions(-)
>>   create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-autogen-address.xml
>>   create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-hostdev-scsi-autogen-address.xml
> Relatively big to be pushing this late after freeze, but it can be
> argued that this is a bug fix and worth including in 1.0.6.
>
I hope it could be included in 1.0.6. The scsi host device can work without
it, but the address should be specified manually, which is not quite good,
and better to have them together in one release.

Osier