Created attachment 594013 [details]
log

Description of problem:

we need to add object lock on attach of direct lun to a vm since we currently have a race. 
since UI does not refresh the quesy fast enough we are able to attach the same lun to morethan one vm when the lun does not have the share tag. 

we get an sql duplicate key violation error in log. 

Version-Release number of selected component (if applicable):

si6

How reproducible:

100%

Steps to Reproduce:
1. create a few direct luns
2. attach all of the luns to a vm
3. attach as many as you can from the luns to a second vm 
  
Actual results:

we are able to connect to same luns from different vms 

Expected results:

we should not be able to connect to the same lun from different vms unless it has the share tag. 

Additional info: full log

tachDiskToVmCommand] (pool-3-thread-47) [e3d11d4] Command org.ovirt.engine.core.bll.AttachDiskToVmCommand throw exception: org.springframework.dao.DataIntegrityViolationException: CallableStatementCallback; SQL [{call insertvmdevice(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)}]; ERROR: duplicate key value violates unique constraint "pk_vm_device"
  Where: SQL statement "INSERT INTO vm_device( device_id, vm_id , device , type, address , boot_order , spec_params, is_managed, is_plugged, is_readonly, alias) VALUES(  $1  ,  $2  ,  $3  ,  $4  ,  $5  ,  $6  ,  $7 ,  $8 ,  $9 ,  $10 ,  $11 )"
PL/pgSQL function "insertvmdevice" line 2 at SQL statement; nested exception is org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "pk_vm_device"
  Where: SQL statement "INSERT INTO vm_device( device_id, vm_id , device , type, address , boot_order , spec_params, is_managed, is_plugged, is_readonly, alias) VALUES(  $1  ,  $2  ,  $3  ,  $4  ,  $5  ,  $6  ,  $7 ,  $8 ,  $9 ,  $10 ,  $11 )"
PL/pgSQL function "insertvmdevice" line 2 at SQL statement
        at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:228) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:952) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.core.JdbcTemplate.call(JdbcTemplate.java:985) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.core.simple.AbstractJdbcCall.executeCallInternal(AbstractJdbcCall.java:368) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.core.simple.AbstractJdbcCall.doExecute(AbstractJdbcCall.java:342) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.springframework.jdbc.core.simple.SimpleJdbcCall.execute(SimpleJdbcCall.java:164) [spring-jdbc-2.5.6.SEC03.jar:2.5.6.SEC03]
        at org.ovirt.engine.core.dal.dbbroker.SimpleJdbcCallsHandler.executeImpl(SimpleJdbcCallsHandler.java:124) [engine-dal.jar:]
        at org.ovirt.engine.core.dal.dbbroker.SimpleJdbcCallsHandler.executeModification(SimpleJdbcCallsHandler.java:37) [engine-dal.jar:]
        at org.ovirt.engine.core.dao.DefaultGenericDaoDbFacade.save(DefaultGenericDaoDbFacade.java:93) [engine-dal.jar:]
        at org.ovirt.engine.core.bll.AttachDiskToVmCommand.ExecuteVmCommand(AttachDiskToVmCommand.java:87) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.VmCommand.executeCommand(VmCommand.java:100) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.ExecuteWithoutTransaction(CommandBase.java:757) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.executeActionInTransactionScope(CommandBase.java:849) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.runInTransaction(CommandBase.java:1149) [engine-bll.jar:]
        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInNewTransaction(TransactionSupport.java:204) [engine-utils.jar:]
        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInRequired(TransactionSupport.java:142) [engine-utils.jar:]
        at org.ovirt.engine.core.utils.transaction.TransactionSupport.executeInScope(TransactionSupport.java:109) [engine-utils.jar:]
        at org.ovirt.engine.core.bll.CommandBase.Execute(CommandBase.java:864) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.ExecuteAction(CommandBase.java:269) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.MultipleActionsRunner.executeValidatedCommands(MultipleActionsRunner.java:182) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.MultipleActionsRunner.RunCommands(MultipleActionsRunner.java:162) [engine-bll.jar:]
        at org.ovirt.engine.core.bll.MultipleActionsRunner$1.run(MultipleActionsRunner.java:84) [engine-bll.jar:]
        at org.ovirt.engine.core.utils.threadpool.ThreadPoolUtil$InternalWrapperRunnable.run(ThreadPoolUtil.java:64) [engine-utils.jar:]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.6.0_24]
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.6.0_24]
        at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.6.0_24]
        at java.lang.Thread.run(Thread.java:679) [rt.jar:1.6.0_24]
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "pk_vm_device"
  Where: SQL statement "INSERT INTO vm_device( device_id, vm_id , device , type