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post(devops): it reported success, nothing had changed (EN+ZH) + og/banner

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Three silent failures on a network-mounted share: a 403 MB upload that wrote 12.5 MB and returned OK
(the timeout toast arrived minutes later, asynchronously), an os.replace() that never landed while
getsize()/mtime served cached metadata (the destination was still the original H.264 file), and a
byte-count source check that agreed with a length-preserving bad copy. Adds read-back hashing at all
three boundaries (source copy, upload, install) and records the metric traps that hid them: a clean
decode test on wrong pictures, SSIM on near-flat frames, input-seek decoding of open-GOP sources,
stream-copy slices dropping frames, and fixed-name scratch files colliding across concurrent runs.
Audit after the fix: reported=30 landed=29 not-landed=0.
This commit is contained in:
hoelee
2026-10-08 05:04:54 +08:00
parent e6476e1d15
commit 0b523f40d6
6 changed files with 296 additions and 0 deletions
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scripts/banner-gen/generate.mjs
+18
View File
@@ -1167,6 +1167,24 @@ BANNERS['every-player-stuttered-the-file-was-fine'] = {
],
};
BANNERS['it-reported-success-nothing-had-changed'] = {
titlebar: "root@nas - reported success",
lines: [
{ t: 'prompt', text: "$" }, { t: 'cmd', text: "convert-batch --tier x265" },
{ t: 'dim', text: "stage: 403,448,100 bytes written" }, { t: 'err', text: "remote: 12,582,912 bytes - reported OK" },
{ t: 'prompt', text: "$" }, { t: 'cmd', text: "read-back hash -> mismatch, re-upload" },
{ t: 'ok', text: "hash match - replacing" }, { t: 'hl', text: "verify at every boundary" },
{ t: 'dim', text: "reported=30 landed=29 not-landed=0" }, { t: 'dim', text: "one writer, zero silent failures" },
],
flow: [
{ n: '1', label: "stage" },
{ n: '2', label: "upload" },
{ n: '3', label: "re-read" },
{ n: '4', label: "hash" },
{ n: '5', label: "replace" },
],
};
// ---------- read frontmatter ----------
const postPath = join(ROOT, 'src', 'content', 'posts', `${slug}.md`);
let category = 'devops';
scripts/og-gen/generate.mjs
+6
View File
@@ -355,6 +355,12 @@ TERMINALS['every-player-stuttered-the-file-was-fine'] = `
<div class="line"><span class="prompt">$</span><span class="cmd">-c:v av1_cuvid -> -hwaccel cuda -c:v av1</span></div>
<div class="line"><span class="prompt">&nbsp;</span><span class="cmd">0 wrong frames SSIM 1.000000</span><span class="fix">-> fixed</span></div>`;
TERMINALS['it-reported-success-nothing-had-changed'] = `
<div class="line"><span class="prompt">$</span><span class="cmd">upload show.mp4 -> "ok"</span></div>
<div class="line"><span class="prompt">&nbsp;</span><span class="err">local 403,448,100 B / remote 12,582,912 B</span></div>
<div class="line"><span class="prompt">$</span><span class="cmd">read-back hash -> mismatch</span></div>
<div class="line"><span class="prompt">&nbsp;</span><span class="cmd">re-upload -> hash match</span><span class="fix">-> verified</span></div>`;
// ---------- read frontmatter ----------
const postPath = join(ROOT, 'src', 'content', 'posts', `${slug}.md`);
if (!existsSync(postPath)) {