Comment 2 for bug 1270825

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Loganathan Parthipan (parthipan) wrote :

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.