I am testing out a iSCSI SAN solution in my vSphere environment and have been adding/removing LUNs on the SAN host while some were left connected on ESXi hosts. I had enabled Storage I/O Control on the datastores and now I cannot remove them. The errors received is:
Call "HostDatastoreSystem.RemoveDatastore" for object "datastoreSystem-580" on vCenter Server "VCENTER1" failed. Cannot remove datastore 'ramdisk' because Storage I/O Control is enabled on it. Correct it and re-try the operation
I cannot disable Storage I/O Control since I cannot right click on the datastore and get to the Properties option. There is a KB article for removing inaccessible NFS datastores:
But this doesn't seem to apply to iSCSI datastores. I no longer have the LUN available to represent.
I have also tried unlclaiming the storage device and get an error that it is still busy:
~ # esxcli corestorage claiming unclaim -t device -d naa.600144f0a4a4450000004d7ae2dd0002 Errors: Unable to perform unclaim. Error message was : Unable to unclaim all requested paths. Some paths were busy or were the last path to an in use device. See VMkernel logs for more information.
How can I remove the iSCSI datastore that is missing the LUN?