Updating my old OpenSUSE 13.1 to Tumbleweed, I made the mistake of setting / as btrfs, as recommended. It quickly filled my partition to the point of not being able to do more updates. I have managed to disable all new snapshots, and remove the newer ones, but I am wondering whether it is safe to remove the following ones, still left:

Code:
Type   | # | Pre # | Date                             | User | Cleanup | Description           | Userdata     
-------+---+-------+----------------------------------+------+---------+-----------------------+--------------
single | 0 |       |                                  | root |         | current               |              
single | 1 |       | Mon 07 Aug 2017 04:07:50 PM CEST | root |         | first root filesystem |              
single | 2 |       | Mon 07 Aug 2017 04:50:55 PM CEST | root | number  | after installation    | important=yes

seafire:~ # du -hs /.snapshots/*
7.7G    /.snapshots/1
7.9G    /.snapshots/2
4.0K    /.snapshots/grub-snapshot.cfg

seafire:~ # df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda6        19G   14G  3.9G  79% /
Otherwise I will need to reinstall with ext4: right now I still don't have enough space left for an update.

Thank you!