Is there an existing issue for this?

• There is no existing issue for this feature

What are you currently unable to do

When the guest asks to eject a disk, it is still present in the instance configuration. This causes problems with some installation medias that should be ejected before reboot.

What do you think would need to be added

We could add an ejected (volatile?) key to indicate that a disk was ejected from the guest, and attach the disk only when it’s not set to yes. Care must be taken when modifying this (volatile) key if we support live modification (no/(absent)->yes sends a QMP eject, which may fail).
If the feature looks ok, I’d be happy to work on it.

The UI may need features to reinsert an ejected disk, and even eject one without detaching the drive.