ZFS Experts, I am looking for some answers:
1. How does dmu_tx_hold_*() routines calculate amount of space required to modify? As actual object modification are done after calls to dmu_tx_hold_*() routines, how does one know the amount of space required? 2. Are dmu_tx_hold_*() routines act independent of type of object? 3. Is it possible to calculate transaction size or even start a transaction without knowing the objects to modify? 4. Is it possible to add operations to transaction after calling dmu_tx_assign()? Thanks in advance. Cheers, -Atul -- Atul Vidwansa Cluster File Systems Inc. http://www.clusterfs.com
