When trying to access vSAN iSCSI targets configuration page, this will display "Unable to extract requested data. Check vSphere Client logs for details."
When looking inside vCenter vsphere_client_virgo.log, this is seen below.
[2022-06-21T07:12:02.973-06:00] [INFO ] http-host com.vmware.vsan.client.util.Measure #####-#######) Gets iSCSI targets, LUNs and storage profiles (9.05 s):
[*---------------------------------* ] VsanIscsiTargetSystem.getIscsiTargetss (1765ms)
[* VsanIscsiTargetSystem.getIscsiLUNs ----------------------------------------------------------------------------------------------------------------------------------------------*] VsanIscsiTargetSystem.getIscsiLUNs (9046ms)
[* ] ProfileManager.retrieveContent (46ms)
[2022-06-21T07:12:02.975-06:00] [ERROR] http-host com.vmware.vsan.client.services.ProxygenController (#####-######-######) Service method encountered an error caused by: `Failed to extract target list data. Check vSphere Client logs for details.` com.vmware.vsan.client.services.VsanUiLocalizableException: Failed to extract target list data for cluster ManagedObjectReference: type = ClusterComputeResource, value = domain-c7, serverGuid =#######-###########-#########-########
at com.vmware.vsphere.client.vsan.iscsi.providers.VsanIscsiTargetPropertyProvider.getTargetListData(VsanIscsiTargetPropertyProvider.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.vmware.vsan.client.services.ProxygenController.invokeService(ProxygenController.java:146)
.....
.....
.....
Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: (vmodl.fault.SystemError) {
faultCause = null,
faultMessage = null,
reason = AttributeError("'NoneType' object has no attribute 'spbmProfileUuid'")
}
at com.vmware.vsan.client.util.retriever.VsanAsyncDataRetriever.getResult(VsanAsyncDataRetriever.java:955)
at com.vmware.vsan.client.util.retriever.VsanAsyncDataRetriever.getIscsiLuns(VsanAsyncDataRetriever.java:705)
at com.vmware.vsphere.client.vsan.iscsi.providers.VsanIscsiTargetPropertyProvider.getTargetListData(VsanIscsiTargetPropertyProvider.java:102)
... 211 common frames omitted
Caused by: java.util.concurrent.ExecutionException: (vmodl.fault.SystemError) {
faultCause = null,
faultMessage = null,
reason = AttributeError("'NoneType' object has no attribute 'spbmProfileUuid'")
vSAN 7.0
This problem occurs when the vSAN iSCSI service is unable to get vSAN object information, due to the backing object not being available anymore.
These objects are old offline iSCSI LUNs which are causing the "Unable to extract requested data. Check vSphere Client logs for details" message to appear on vSAN iSCSI configuration page.
Resolved in 7.0P09 and later