Update DB record during fill

[albireox]

Fixes #9

[codecov]

Codecov Report

Attention: Patch coverage is 19.04762% with 34 lines in your changes missing coverage. Please review.

Project coverage is 23.96%. Comparing base (7d4882c) to head (aad2f30).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/lvmcryo/tools.py	21.21%	26 Missing ⚠️
src/lvmcryo/handlers/ln2.py	11.11%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #10      +/-   ##
==========================================
- Coverage   24.19%   23.96%   -0.23%     
==========================================
  Files           8        8              
  Lines        1277     1310      +33     
  Branches      210      217       +7     
==========================================
+ Hits          309      314       +5     
- Misses        963      991      +28     
  Partials        5        5              

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