Named Disks using a Shared Controller fail to connect to a particular bus:unit combination even though the slot is available
book
Article ID: 325537
calendar_today
Updated On:
Products
VMware Cloud Director
Issue/Introduction
Symptoms:
Named Disks using a Shared Controller fail to connect to a particular bus:unit combination even though the slot is available
(bus:unit) is not available error message is observed when connecting a Named Disk
Environment
VMware Cloud Director 10.x
Cause
This issue occurs only with powered on VMs. When the Named Disk is first mounted a chosen bus:unit is decided upon. This same bus:unit value is then used for all subsequent VMs, meaning if a VM does not have this slot free, the mounting will fail.
Note: You will also see the above error if the slot is free for the VM, but the Controller is not shared.
Resolution
This is a Known Issue affecting Cloud Director 10.3.
Workaround:
Change the bus:unit number, on the existing attached VMs.
Detach the disk from the VM.
Attach the disk specifying the required bus:unit slot.
Recreate the Controller
Remove all the disks on the bus which shared disk is currently using.