ERROR 4 Host db file not found on DS1525+ with DSM 7.2.2-72806 Update 5 (2025+ series)

[butunin]

Model: DS1525+ (x86_64)
DSM version: 7.2.2-72806 Update 5
Script version: 3.6.111 (fresh download from main branch, November 24 2025)
Disk: Seagate IronWolf ST8000VN004-3CP101 (SC60 firmware)

Problem:
The script always exits with ERROR 4 Host db file not found! even when the host db file exists and all possible symlinks are created.

Important note:
Everything worked perfectly on the same DS1525+ before updating to DSM 7.2.2-72806 Update 5. After this exact update the host db file simply disappeared and the script can no longer find/create it.

What I already tried (nothing helped):

• Fresh download of the script + syno_hdd_vendor_ids.txt is present

• Manually created /usr/syno/etc.defaults/ds1525+_host.db with correct CSV format

• Created every possible symlink:
  /usr/syno/etc.defaults/hdddb → ds1525+_host.db
  /usr/syno/etc.defaults/DS1525+_host.db → ds1525+_host.db
  /usr/syno/etc/hdddb → ds1525+_host.db
  /etc.defaults/hdddb → ds1525+_host.db
  /etc/hdddb → ds1525+_host.db

• Permissions 644, owner root

• Ran with every combination: -n -i -f -I --showedits, -n -i -f, -n, etc. → always ERROR 4

Expected behaviour:
The script should either find the existing ds1525+_host.db or create it automatically when missing (as it successfully does on older models and on DS1522+/DS1823xs+ in other issues).

Why this is critical for 2025+ series:
Starting exactly with DSM 7.2.2-72806 Update 5 on DS1525+ (and probably DS925+, DS1825+, etc.) Synology stopped creating the host db file at all - this is the new aggressive vendor-lock. The only 100 % working workaround right now is setting support_disk_compatibility=no in synoinfo.conf, but that defeats the whole purpose of the script.

Request:
Please add automatic creation of the host db file for 2025+ models (DS1525+, DS925+, DS1825+, etc.) when it is not found, or at least make the script log the exact path/name it expects for the DS1525+.
This regression appeared exactly with 72806-5 — previous DSM builds on the same NAS worked fine with the script.

Thank you so much for this life-saving script — it has helped thousands of people, and the 2025+ models just broke the old detection logic.

Best regards!

[007revad]

You don't need any symlinks.

The db files are in /var/lib/disk-compatibility

Error 4 occurs when the list of host db files is empty. What does the following return?

find /var/lib/disk-compatibility -maxdepth 1 -name "*_host*.db"

If that returns nothing then what does this return?

ls /var/lib/disk-compatibility/*_host*.db

Or

ls /var/lib/disk-compatibility/*.db