viktor/infra
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

nfs-mirror: weekly Mon 04:00 → daily 02:00

Browse source 
Steady-state delta runs in 10-20 min and the weekly cadence left a
real RPO gap: app data under /srv/nfs/<svc>/ that isn't a PVC
(captured by daily-backup) or a *-backup CronJob (captured daily by
the CronJob writing to /srv/nfs/<svc>-backup/) was on a 7-day worst
case for off-disk durability. Affected paths include nextcloud shared
files, audiobookshelf library, mailserver Maildir, calibre, servarr
metadata, real-estate-crawler scraped data, openclaw agent state.
Daily cadence drops their RPO to ~24h at negligible cost.

Slot: 02:00, 3h ahead of daily-backup (05:00) so the manifest is
populated before offsite-sync reads it at 06:00.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Viktor Barzin 2026-05-26 19:00:10 +00:00
parent 1eee56d0ba
commit 37d88ce50e
2 changed files with 17 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

10
scripts/nfs-mirror.timer
View file

@ -1,8 +1,14 @@
[Unit]
Description=Weekly local NFS mirror to /mnt/backup
Description=Daily local NFS mirror to /mnt/backup
[Timer]
OnCalendar=Mon *-*-* 04:00:00
# Daily 02:00 — runs 3h before daily-backup (05:00) so the .changed-files
# manifest is populated and offsite-sync (06:00) ships both legs' deltas.
# Switched from weekly Mon 04:00 → daily 2026-05-26: steady-state delta is
# 10-20 min of mostly-metadata rsync, so the IO cost is negligible and it
# cuts non-CronJob app-data RPO from 7d to ~24h (matters for nextcloud
# shared files, audiobookshelf library, mailserver Maildir, etc.).
OnCalendar=*-*-* 02:00:00
Persistent=true
RandomizedDelaySec=15min