On 17.07.19 г. 12:11 ч., Ulli Horlacher wrote:
> On Wed 2019-07-17 (11:24), Nikolay Borisov wrote:
>>
>>
>> On 17.07.19 3. 2:24 G., 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.
>
> It is true on all my SUSE and Ubuntu systems, for all versions.
That's strange, as I've shown in the previous thread, using the latest
master doesn't exhibit this behavior.
>
>
>> 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.
>
> Where can I find this ROOT_ITEM offset member? Which command?
btrfs inspect-internal dump-tree -t 1 /dev/vdb
>
>
