Comment 4 for bug 1723285

@martin3000 IIRC the default partition scheme is for /home to be in the root partition. Not saying you had that setup, just musing.

With the default partition scheme, taking a snapshot of essentially the entire disk without notifying the user means the user's normal activity can blow out the snapshot. E.g. the user deletes 100 GiB of old videos and copies on some new ones while the upgrade is in progress. This really should be an option during the upgrade.