Session 0007: FTP Progress Callbacks & Upload Button Fix

Date: 2026-02-22 Status: Completed Origin: MDF Webseiten session 0038

Work Done

[x] Added FTP upload/download progress callbacks to offsite.py — prints every 5% with size info
[x] Increased FTP block size to 256KB for better throughput
[x] Added flush=True and sys.stdout.reconfigure(line_buffering=True) for SSE streaming compatibility
[x] Fixed Upload button — now passes exact filename through frontend → API (?name= param) → ops CLI; previously always uploaded the latest backup regardless of which row was clicked
[x] Added cache: 'no-store' to all fetch() calls in app.js to prevent stale UI state
[x] Added renderBackups() call after upload success and on upload modal close
[x] Added /etc/tmpfiles.d/mdf-cleanup.conf to auto-clean orphan /tmp/tmp* dirs older than 1 day
[x] Increased FTP data socket timeout to 300s for large transfers
[x] Verified via Playwright: LOCAL + OFFSITE badges display correctly, merge-by-filename works

sys.stdout.reconfigure(line_buffering=True) is required for progress output to stream through SSE — buffered stdout swallows output
The upload endpoint must accept a name= param; generic "upload latest" is wrong UX when user clicks a specific row
cache: 'no-store' on all fetches is necessary — stale backup list after upload is confusing
Corrupt backup (prod_backup_20260219_164913.tar.gz) failed FTP at ~5% consistently — safe to delete

Tags: #Session #OpsDashboard #Backups #FTP