On 30/07/19 16:57, Christian Borntraeger wrote: > While this fixes the test (and the migration does work fine), it still > means that s390x overindicates the dirty bit for sparsely populated > 1M segments. It is just a performance issue, but maybe we should try > to get this fixed. Not sure what to do here to remember us about this, > adding this as expected fail? if it's only on the first access after enabling dirty logging, that shouldn't be that bad? Paolo