This is a good question, accordingly @jammerdan, the folder selection which would start to be deleted is random or, more like, the latest one, but the folders inside deleted in an ordered way, see
This is true for Linux and ext4. Windows behave differently, their system calls sorting the output by default. So - from oldest to newest, but I can confirm (or at least I noted that), that the folders inside the folders with the date names are deleted in the alphabetical order, too.
I found an easy way:
$ sudo ls -1Rltu /mnt/x/storagenode2/storage/trash/pmw6tvzmf2jv6giyybmmvl4o2ahqlaldsaeha4yx74n5aaaaaaaa/ | head
/mnt/x/storagenode2/storage/trash/pmw6tvzmf2jv6giyybmmvl4o2ahqlaldsaeha4yx74n5aaaaaaaa/:
total 0
drwx------ 1 root root 4096 Sep 5 10:09 2024-08-29
drwx------ 1 root root 4096 Sep 5 09:52 2024-08-26
drwx------ 1 root root 4096 Sep 5 09:50 2024-09-02
/mnt/x/storagenode2/storage/trash/pmw6tvzmf2jv6giyybmmvl4o2ahqlaldsaeha4yx74n5aaaaaaaa/2024-08-29:
total 0
drwx------ 1 root root 4096 Sep 3 15:27 v3
drwx------ 1 root root 4096 Sep 3 15:18 v2
If you would add a date folder to the satellite’s subfolder path, you would see a progress If you have atime enabled, otherwise, the u option can be removed.
And to do not extend this with a discussing the sorting, you may refer the linked thread, thanks.