(In reply to Stefan Hundhammer from comment #7) > OK, so this could be fixed with a one-liner in the FakeDeviceFactory: If the > requested size for an LV is 'unlimited' (-1), use a huge size instead like > 16 EiB. > > I guess that only works because somewhere in libstorage-ng this is limited > by the available size for that LV, right? No, the volume group is overcommitted in that case. Maybe the result is not really needed in the testcases.