OverlayFS-based write reduction plugin for openmediavault 7
- Uses tmpfs + overlayfs for selected write-heavy system paths (e.g.,
/var/log, APT cache). - Safe defaults: caches dropped at reboot; optional flush on shutdown & daily timer.
- Journald
Storage=volatileoption to keep logs in RAM. - Salt-managed config at
/etc/omv-writecache/config.yaml. - Systemd oneshot units for mount/flush.
- Minimal web UI (Workbench YAML) under Services → Write Cache.
sudo /usr/sbin/omv-writecache mount
sudo /usr/sbin/omv-writecache flush
sudo /usr/sbin/omv-writecache unmount
sudo /usr/sbin/omv-writecache status