Github user borisstoyanov commented on the issue:
https://github.com/apache/cloudstack/pull/1813
Hi @priyankparihar,
I've set the vmware.root.disk.controller to iscsi, and got the following:
```
2017-03-10 12:07:47,630 DEBUG [c.c.a.m.DirectAgentAttache]
(DirectAgent-1:ctx-fa3e95c6) (logid:1d1dda75) Seq 1-2727211049349545996:
Executing request
2017-03-10 12:07:47,631 INFO [c.c.h.v.r.VmwareResource]
(DirectAgent-1:ctx-fa3e95c6 10.2.2.23, job-66/job-67, cmd: StartCommand)
(logid:3be8ee6e) Executing resource StartCommand:
{"vm":{"id":15,"name":"i-2-15-VM","bootloader":"HVM","type":"User","cpus":1,"minSpeed":250,"maxSpeed":500,"minRam":536870912,"maxRam":536870912,"hostName":"VM-ec57ee69-4604-4eb8-8460-2d9152216239","arch":"x86_64","os":"CentOS
5.3
(64-bit)","platformEmulator":"centos64Guest","bootArgs":"","enableHA":false,"limitCpuUse":false,"enableDynamicallyScaleVm":false,"vncPassword":"UcWxqITdc_kGyQEoT76Nog","params":{"deployvm":"true","dataDiskController":"osdefault","memoryOvercommitRatio":"1.0","nestedVirtualizationFlag":"false","cpuOvercommitRatio":"2.0","vmware.reserve.mem":"false","vmware.reserve.cpu":"false","nicAdapter":"E1000","rootDiskController":"iscsi"},"uuid":"ec57ee69-4604-4eb8-8460-2d9152216239","disks":[{"data":{"org.apache.cloudstack.storage.to.VolumeObjectTO":{"uuid":"4943afe9-a45b-4d28-8c46-b11b9bb
6369a","volumeType":"ROOT","dataStore":{"org.apache.cloudstack.storage.to.PrimaryDataStoreTO":{"uuid":"45c46701-09f6-3ae1-b322-192709c67bf8","id":1,"poolType":"NetworkFilesystem","host":"10.2.0.16","path":"/acs/primary/pr1813-t948-vmware-55u3/pr1813-t948-vmware-55u3-esxi-pri1","port":2049,"url":"NetworkFilesystem://10.2.0.16/acs/primary/pr1813-t948-vmware-55u3/pr1813-t948-vmware-55u3-esxi-pri1/?ROLE=Primary&STOREUUID=45c46701-09f6-3ae1-b322-192709c67bf8","isManaged":false}},"name":"ROOT-15","size":2147483648,"path":"ROOT-15-000001","volumeId":11,"vmName":"i-2-15-VM","accountId":2,"format":"OVA","provisioningType":"THIN","id":11,"deviceId":0,"bytesReadRate":0,"bytesWriteRate":0,"iopsReadRate":0,"iopsWriteRate":0,"hypervisorType":"VMware"}},"diskSeq":0,"path":"ROOT-15-000001","type":"ROOT","_details":{"storageHost":"10.2.0.16","managed":"false","storagePort":"2049","volumeSize":"2147483648"}},{"data":{"org.apache.cloudstack.storage.to.TemplateObjectTO":{"id":0,"format":"ISO","accountI
d":0,"hvm":false}},"diskSeq":3,"type":"ISO"}],"nics":[{"deviceId":0,"networkRateMbps":200,"defaultNic":true,"pxeDisable":false,"nicUuid":"8a911398-8512-4d3d-8c79-2fee06faf5a5","uuid":"9b2c0464-d6b4-4fe2-a9c4-433dcc3ada3c","ip":"10.1.1.22","netmask":"255.255.255.0","gateway":"10.1.1.1","mac":"02:00:39:d2:00:03","dns1":"8.8.8.8","dns2":"8.8.4.4","broadcastType":"Vlan","type":"Guest","broadcastUri":"vlan://976","isolationUri":"vlan://976","isSecurityGroupEnabled":false,"name":"vSwitch1,,vmwaresvs"}]},"hostIp":"10.2.2.23","executeInSequence":true,"wait":0}
2017-03-10 12:07:47,632 WARN [c.c.a.m.DirectAgentAttache]
(DirectAgent-1:ctx-fa3e95c6) (logid:3be8ee6e) Seq 1-2727211049349545996:
Throwable caught while executing command
com.cloud.utils.exception.CloudRuntimeException: Invalid root disk
controller detected : none
at
com.cloud.hypervisor.vmware.resource.VmwareResource.execute(VmwareResource.java:1539)
at
com.cloud.hypervisor.vmware.resource.VmwareResource.executeRequest(VmwareResource.java:467)
at
com.cloud.agent.manager.DirectAgentAttache$Task.runInContext(DirectAgentAttache.java:315)
at
org.apache.cloudstack.managed.context.ManagedContextRunnable$1.run(ManagedContextRunnable.java:49)
at
org.apache.cloudstack.managed.context.impl.DefaultManagedContext$1.call(DefaultManagedContext.java:56)
at
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.callWithContext(DefaultManagedContext.java:103)
at
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.runWithContext(DefaultManagedContext.java:53)
at
org.apache.cloudstack.managed.context.ManagedContextRunnable.run(ManagedContextRunnable.java:46)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
```
This looks like code issue since we can see it passed the StartCommand with
`"rootDiskController":"iscsi"` but then exception appears: `Invalid root disk
controller detected : none`
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