Verified on CFME-5.7.0.11 & RHV-4.0.5: VM down ======= Remove bootable, single disk (Delete Backing = Yes) + Add bootable disk - Work OK: Request on CFME side end successfully, and on RHV side, bootable disk was removed, and a new bootable disk was added. Detach bootable, single disk (Delete Backing = No) + Add bootable disk - Work OK: Request on CFME side end successfully, and on RHV side, bootable disk was detached, and a new bootable disk was added. VM up ===== Remove bootable, single disk (Delete Backing = Yes) + Add bootable disk - Fail on: "Error: Fault reason is "Operation Failed". Fault detail is "[Cannot remove Virtual Disk. At least one of the VMs is not down.]". HTTP response code is 409." Detach bootable, single disk (Delete Backing = No) + Add bootable disk - Fail on: "Error: Fault reason is "Operation Failed". Fault detail is "[Cannot detach Virtual Disk. The disk is already configured in a snapshot. In order to detach it, remove the disk's snapshots.]". HTTP response code is 409."
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2017-0012.html