Bug 1455124
| Summary: | VMs with legacy USB device will fail to start with "PCI slot duplicate error" if these VMs are not down while upgrading from 3.6 to 4.1 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Virtualization Manager | Reporter: | nijin ashok <nashok> |
| Component: | ovirt-engine | Assignee: | Nobody <nobody> |
| Status: | CLOSED DUPLICATE | QA Contact: | Israel Pinto <ipinto> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 4.1.1 | CC: | lsurette, nashok, rbalakri, Rhev-m-bugs, srevivo, tjelinek, ykaul |
| Target Milestone: | ovirt-4.1.3 | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-05-25 07:51:03 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | Virt | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Duplicate of bug 1443078 ? (In reply to Yaniv Kaul from comment #1) > Duplicate of bug 1443078 ? And if it is, see workaround at https://bugzilla.redhat.com/show_bug.cgi?id=1443078#c16 yes, a duplicate. @Nijin, can you please try to workaround? (In reply to Tomas Jelinek from comment #3) > yes, a duplicate. > > @Nijin, can you please try to workaround? I missed the other bug. It's the same issue. Yes, workaround works fine. Just disabling and enabling USB removed the legacy device from the database. Then the VM boot up fine. *** This bug has been marked as a duplicate of bug 1443078 *** |
Description of problem: If the VM is started with legacy USB device, it will create following entries in the database on 3.6 RHEV-M. engine=# select device_id,spec_params from vm_device where vm_id = '4d000ed5-d371-41a6-b347-c29f0f9c45b4' and device='usb'; device_id | spec_params --------------------------------------+------------- f62d59d2-cbf2-4677-a5e3-2cb7fea5c66e | { } (1 row) The same entry will be there in the database for these VMs after upgrading to 4.0 . Now change the cluster compatibility of the cluster to 4.0 and then Upgrade RHV-M to 4.1. If we shutdown the VM at this state, it will create devices for both legacy and native USB device in the database. device_id | spec_params --------------------------------------+-------------------------- f62d59d2-cbf2-4677-a5e3-2cb7fea5c66e | { } 81d8f783-84c5-43ec-8b0c-a6d6abaf82a3 | { + | "index" : "0", + | "model" : "ich9-uhci2"+ | } ced4809e-59ec-42ef-98a7-134531a26cc4 | { + | "index" : "0", + | "model" : "ich9-uhci3"+ | } 4b54563e-a2a6-4e10-a518-274ac73a31df | { + | "index" : "0", + | "model" : "ich9-uhci1"+ | } 4f4649a8-f772-41e6-bf1b-89d1a573abcb | { + | "index" : "0", + | "model" : "ich9-ehci1"+ | } Because of the presence of the legacy device, VM will fail to start with below errors with duplicate PCI slot error. 2017-05-24 09:35:19,138+0530 ERROR (vm/4d000ed5) [virt.vm] (vmId='4d000ed5-d371-41a6-b347-c29f0f9c45b4') The vm start process failed (vm:617) Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 553, in _startUnderlyingVm self._run() File "/usr/share/vdsm/virt/vm.py", line 2006, in _run self._connection.createXML(domxml, flags), File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 123, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 941, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3777, in createXML if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) libvirtError: internal error: Attempted double use of PCI slot 0000:00:01.0 (may need "multifunction='on'" for device on function 0) To resolve the issue, we have to manually remove the legacy USB device from the vm_device table ( f62d59d2-cbf2-4677-a5e3-2cb7fea5c66e ). Version-Release number of selected component (if applicable): Version after upgrade: rhevm-4.1.1.8-0.1.el7.noarch ovirt-engine-4.1.1.8-0.1.el7.noarch Before upgrade: rhevm-3.6.11.1-0.1.el6.noarch Host version: vdsm-4.19.10.1-1.el7ev.x86_64 libvirt-daemon-2.0.0-10.el7_3.5.x86_64 How reproducible: 100% Steps to Reproduce: 1. create a 3.6 RHV-M environment with 4.1 host. 2. Start a VM in this environment with USB device as legacy. This should create a USB device for the VM in the database. 3. Upgrade RHV-M to 4.0 by keeping the VM as up. 4. Change the cluster compatibility to 4.0 . Don't shutdown the VM. 5. Upgrade the RHV-M to 4.1 . 6. Shutdown the VM . Check the vm_device table if it now contains both legacy and native USB devices. 7. Start the VM. It will fail with error "Attempted double use of PCI slot" Actual results: VM is not able to start with PCI slot error Expected results: VM should be able to start without any error. Additional info: Issue is not reproduced if, [1] VM is down while migrating to 4.0. [2] VM is made down before upgrading to 4.1.