enable zram sync

[mstormi]

• [x] sync at intervals w/ OH running
• [x] remove /opt/zram from mirrored(rsynced) exclude list of dirs backup.bash#L456

run

SERVICE=1 /usr/local/sbin/zram-config sync

at regular intervals, e.g. through (ATTN: check if env var is passed !)

admin@mysmarthouse:/etc/systemd/system $ cat zsync.service
[Unit]
Description=Perform nightly zram sync to persistent storage
After=zram-config.service
Wants=zsync.timer
[Service]
Type=oneshot
ExecStart=/usr/local/sbin/zram-config "sync"
admin@mysmarthouse:/etc/systemd/system $ cat zsync.timer
[Unit]
Description=Perform nightly zram sync to persistent storage

[Timer]
Unit=zsync.service
OnCalendar=*-*-* 00:55
RandomizedDelaySec=10m
Persistent=true

[Install]
WantedBy=timers.target

[mstormi]

added