It should be possible, in theory, to rebase the disk so that the backing file is removed in the destination on the exception ImageNotFound from glance client.
source node:
disk (qcow2) -> _base/backing_file
destination node:
disk (qcow2) - But no backing file
This would ensure that this particular instance would keep running and migrate again.
Not having a backing file in _base is acceptable in this case since there isn't going to be another instance off this rootdisk again.
It should be possible, in theory, to rebase the disk so that the backing file is removed in the destination on the exception ImageNotFound from glance client.
source node:
disk (qcow2) -> _base/backing_file
destination node:
disk (qcow2) - But no backing file
This would ensure that this particular instance would keep running and migrate again.
Not having a backing file in _base is acceptable in this case since there isn't going to be another instance off this rootdisk again.