Change in ovirt-engine[ovirt-engine-4.1]: core: add support for more than one virtio scsi controller

[Code Review]

>From Tal Nisan <tnisan at redhat.com>:

Tal Nisan has submitted this change and it was merged.

Change subject: core: add support for more than one virtio scsi controller
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core: add support for more than one virtio scsi controller

Since every IO Thread has to have it's own virtio scsi controller and the
current code supported only one controller, this patch adds the support for
having more than one.

If the num of io threads of a VM is lowered, the controller Id is re-generated
for this disks.

If the num of io threads is enlarged, the existing disks which already have
addresses are not re-generated, only for the new disks will be assigned to
new controller.

Therefore, in order to enforce the rearrangement of the disks to io threads
which has already been given some address, the disks have to be de-activated
and activated again. The reason is to not to touch the assignement of the disks
to controllers since it influences the disk arrangement inside of the guest.

Change-Id: I5bc8d58237ae28901bf866a50f30e87ee852c980
Bug-Url: https://bugzilla.redhat.com/1422450
Signed-off-by: Tomas Jelinek <tjelinek at redhat.com>
---
M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/AddVmCommand.java
M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/storage/disk/AbstractDiskVmCommand.java
M backend/manager/modules/vdsbroker/src/main/java/org/ovirt/engine/core/vdsbroker/builder/vminfo/VmInfoBuildUtils.java
M backend/manager/modules/vdsbroker/src/main/java/org/ovirt/engine/core/vdsbroker/builder/vminfo/VmInfoBuilderImpl.java
4 files changed, 166 insertions(+), 30 deletions(-)

Approvals:
  Tomas Jelinek: Verified
  Shahar Havivi: Looks good to me, but someone else must approve
  Jenkins CI: Passed CI tests
  Arik Hadas: Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: I5bc8d58237ae28901bf866a50f30e87ee852c980
Gerrit-PatchSet: 4
Gerrit-Project: ovirt-engine
Gerrit-Branch: ovirt-engine-4.1
Gerrit-Owner: Tomas Jelinek <tjelinek at redhat.com>
Gerrit-Reviewer: Arik Hadas <ahadas at redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Shahar Havivi <shavivi at redhat.com>
Gerrit-Reviewer: Tal Nisan <tnisan at redhat.com>
Gerrit-Reviewer: Tomas Jelinek <tjelinek at redhat.com>
Gerrit-Reviewer: gerrit-hooks <automation at ovirt.org>