https://tsvinc.dev/tags/process/ Recent content in Process on tsvinc Hugo en-us Sun, 18 Oct 2026 00:00:00 +0000 https://tsvinc.dev/posts/guard-rails-that-said-no/ Sun, 18 Oct 2026 00:00:00 +0000 https://tsvinc.dev/posts/guard-rails-that-said-no/ <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-text" data-lang="text"><span class="line"><span class="cl">Script Error: failure: mountpoint usb1-part1 is used by log-&gt;file:/blockylog.0.txt (/disk/set *0 = *0) (/disk/set; line 7) (:import; line 1) </span></span><span class="line"><span class="cl">ABORT: whole SSD still shared (smb/media entries: 2) </span></span></code></pre></div><p>That was the deploy script for the MQTT broker on the router, stopping itself at step 0. Nothing after that line ran: no router backup, no password file, no broker. The second line had been added to the script two minutes earlier.</p> <p>The project behind <a href="https://tsvinc.dev/posts/esp32-bluetti-ac180-bridge/">the power station bridge</a> hit several refusals like this one in a single day. Some came from scripts, one from a permission check in my tooling, one from a review note. Each one made the result better. The only expensive failure of the day came from a tool that didn't refuse at all.</p>