Sadly nothing positive:
In case there’s any use in it, I see the following in my index-v2 folder:
[localadmin@NAS-140 index-v2]$ ls -lah
total 1016M
drwxrwx--- 2 admin administrators 8 2025-08-29 00:02 ./
drwxrwx--- 6 admin administrators 30 2025-08-29 00:02 ../
-rw-r--r-- 1 admin administrators 1.1G 2025-08-29 00:38 folder.0001-mdyzme37.db
-rw-r--r-- 1 admin administrators 32K 2025-08-29 00:49 folder.0001-mdyzme37.db-shm
-rw-r--r-- 1 admin administrators 8.0M 2025-08-29 00:49 folder.0001-mdyzme37.db-wal
-rw-r--r-- 1 admin administrators 36K 2025-08-29 00:57 main.db
-rw-r--r-- 1 admin administrators 32K 2025-08-29 00:59 main.db-shm
-rw-r--r-- 1 admin administrators 4.0M 2025-08-29 00:59 main.db-wal
…and the following when I get the database stats (if I’ve found the right incantation):
[localadmin@NAS-140 syncthing]$ sudo ./syncthing debug database-statistics --home=/share/ZFS530_DATA/.qpkg/syncthing
Password:
DATABASE FOLDER ID TABLE SIZE FILL
======== ====== == ===== ==== ====
main.db - folders 4 KiB 1.2 %
main.db - folders_database_name 4 KiB 0.9 %
main.db - kv 4 KiB 23.1 %
main.db - schemamigrations 4 KiB 3.3 %
main.db - sqlite_autoindex_folders_1 4 KiB 0.6 %
main.db - sqlite_autoindex_kv_1 4 KiB 12.9 %
main.db - sqlite_schema 4 KiB 26.8 %
main.db - sqlite_sequence 4 KiB 0.5 %
main.db - sqlite_stat1 4 KiB 3.7 %
folder.0001-mdyzme37.db arrkq-wqckd blocklists 888048 KiB 97.5 %
folder.0001-mdyzme37.db arrkq-wqckd blocks 42728 KiB 99.5 %
folder.0001-mdyzme37.db arrkq-wqckd counts 4 KiB 5.2 %
folder.0001-mdyzme37.db arrkq-wqckd devices 4 KiB 3.7 %
folder.0001-mdyzme37.db arrkq-wqckd fileinfos 23188 KiB 96.7 %
folder.0001-mdyzme37.db arrkq-wqckd files 21932 KiB 96.9 %
folder.0001-mdyzme37.db arrkq-wqckd files_blocklist_hash_only 3464 KiB 89.4 %
folder.0001-mdyzme37.db arrkq-wqckd files_device_name 17996 KiB 80.2 %
folder.0001-mdyzme37.db arrkq-wqckd files_name_only 17624 KiB 80.9 %
folder.0001-mdyzme37.db arrkq-wqckd files_remote_sequence 1248 KiB 87.2 %
folder.0001-mdyzme37.db arrkq-wqckd indexids 4 KiB 1.5 %
folder.0001-mdyzme37.db arrkq-wqckd kv 4 KiB 0.8 %
folder.0001-mdyzme37.db arrkq-wqckd mtimes 4 KiB 0.2 %
folder.0001-mdyzme37.db arrkq-wqckd schemamigrations 4 KiB 3.3 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_autoindex_blocklists_1 2648 KiB 89.3 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_autoindex_blocks_1 43468 KiB 88.6 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_autoindex_devices_1 4 KiB 3.6 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_autoindex_kv_1 4 KiB 0.6 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_schema 12 KiB 44.8 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_sequence 4 KiB 1.0 %
folder.0001-mdyzme37.db arrkq-wqckd sqlite_stat1 4 KiB 10.9 %
folder.0001-mdyzme37.db arrkq-wqckd (total) 1062396 KiB 96.5 %
main.db + children - (total) 1062432 KiB 96.5 %