Created attachment 679615 [details]
## Logs vdsm, rhevm

Description of problem:
Reusing LUN that was previously used by Direct LUN disk and Storage Domain causes to GetLunsByVgIdQuery fail with Null Pointer Exception on FC DC environment

Version-Release number of selected component (if applicable):
RHEVM 3.2 - SF03 environment 

RHEVM: rhevm-3.2.0-4.el6ev.noarch 
VDSM: vdsm-4.10.2-3.0.el6ev.x86_64 
LIBVIRT: libvirt-0.10.2-13.el6.x86_64 
QEMU & KVM: qemu-kvm-rhev-0.12.1.2-2.348.el6.x86_64 
SANLOCK: sanlock-2.6-2.el6.x86_64

How reproducible:
100%

Based on BZ875909

Steps to Reproduce:
1. Create a new FC DC environment
2. Create Storage Domain with new LUN 
3. Create Direct LUN with same LUN (from previous step)
4. Remove Storage Domain
5. Remove Direct LUN
6. Create Storage Domain with same LUN (from previous step)
7. Activate Storage Domain
8. Edit Storage Domain

  
Actual results:
Get an error: Query GetLunsByVgIdQuery failed. Exception message is VdcBLLException: java.lang.NullPointerException

Expected results:
No exception should be found

Additional info:

/var/log/ovirt-engine/engine.log

2013-01-16 15:33:16,870 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.GetDeviceListVDSCommand] (ajp-/127.0.0.1:8702-11) START, GetDeviceListVDSCommand(HostName = green-vdsa.q
a.lab.tlv.redhat.com, HostId = 3a9f64c6-68ec-4dd6-83fa-461af22db043, storageType=FCP), log id: 2ea014d9
2013-01-16 15:33:16,890 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.GetDeviceListVDSCommand] (ajp-/127.0.0.1:8702-6) START, GetDeviceListVDSCommand(HostName = green-vdsa.qa
.lab.tlv.redhat.com, HostId = 3a9f64c6-68ec-4dd6-83fa-461af22db043, storageType=null), log id: 235d93db
2013-01-16 15:33:16,890 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.VdsBrokerCommand] (ajp-/127.0.0.1:8702-6) Failed in GetDeviceListVDS method, for vds: green-vdsa.qa.lab.
tlv.redhat.com; host: green-vdsa.qa.lab.tlv.redhat.com
2013-01-16 15:33:16,890 ERROR [org.ovirt.engine.core.vdsbroker.VDSCommandBase] (ajp-/127.0.0.1:8702-6) Command GetDeviceListVDS execution failed. Exception: NullPointerException
: 
2013-01-16 15:33:16,890 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.GetDeviceListVDSCommand] (ajp-/127.0.0.1:8702-6) FINISH, GetDeviceListVDSCommand, log id: 235d93db
2013-01-16 15:33:16,891 ERROR [org.ovirt.engine.core.bll.GetLunsByVgIdQuery] (ajp-/127.0.0.1:8702-6) Query GetLunsByVgIdQuery failed. Exception message is VdcBLLException: java.lang.NullPointerException
2013-01-16 15:33:31,250 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.GetDeviceListVDSCommand] (ajp-/127.0.0.1:8702-11) FINISH, GetDeviceListVDSCommand, return: [org.ovirt.engine.core.common.businessentities.LUNs@ec665cc5, org.ovirt.engine.core.common.businessentities.LUNs@789d965f, org.ovirt.engine.core.common.businessentities.LUNs@65132ee0, org.ovirt.engine.core.common.businessentities.LUNs@cfc471ae, org.ovirt.engine.core.common.businessentities.LUNs@1c1e060b, org.ovirt.engine.core.common.businessentities.LUNs@e2ac2d7b, org.ovirt.engine.core.common.businessentities.LUNs@c5099967, org.ovirt.engine.core.common.businessentities.LUNs@f10e9ac9], log id: 2ea014d9

/var/log/vdsm/vdsm.log