Image removed by snapshot restore still shown as attached in media manager

[chrfranke]

Longstanding bug:

Steps to reproduce:

• select a VM with an empty virtual optical drive,
• create a snapshot of this VM,
• attach some new ISO image to the optical drive,
• restore the snapshot (do not create one for current state),
• check "Attached to" status of ISO image in virtual media manager.

Observed: ISO image is still reported as "Attached to: Name_of_VM". As a consequence, "Remove" button is disabled.

Expected: ISO image should be reported as "Not Attached".

Workaround: Re-add ISO image, and then remove it manually before restoring the snapshot.

[Klaus Espenlaub]

Please attach an affected .vbox config. We can't reproduce so there must be some config specific misbehavior.

[chrfranke]

.vbox file from 3rd step (snapshot taken, iso image attached)

[chrfranke]

Results from further investigation:

• The workaround is more easy if no other VMs are running: Close VBox UI and wait until VBoxSVC.exe exits. After restarting VBox UI virtual media manager reports "Not Attached". So I guess some sync is missing between VM settings and the table used by virtual media manager.

• A snapshot restore does not always set the optical drive back to "Empty" state. This is apparently at least the case if the very first snapshot is restored.