On 17.07.19 г. 2:24 ч., Ulli Horlacher wrote: > I thought, I can recognize a snapshot when it has a Parent UUID, but this > is not true for snapshots of toplevel subvolumes: As you have asked this before - in my testing this is not true. Looking at the code it also seems snapshots get a parent. Alternatively you have to parse the root tree - the ROOT_ITEM's offset member should be 0 for well-known trees/ordinary subvolume or the transaction id when the snapshot was created.
