openmediavault-writecache

OverlayFS-based write reduction plugin for openmediavault 7

Highlights

• 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=volatile option 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.

Manual CLI

sudo /usr/sbin/omv-writecache mount
sudo /usr/sbin/omv-writecache flush
sudo /usr/sbin/omv-writecache unmount
sudo /usr/sbin/omv-writecache status