Added 2 configuration parameters to armbian-zram-config.
First paramter (SWAP=) can explicitely disable zram swap (while leaving log and tmp untouched).
Second parameter (TMP_SIZE) can be used to explicitely set tmp ramdisk size.
The behaviour of existing configurations is not changed.
New function activate_zram() to initialize zram devices and parameters.
Changed script to use zramctl to more flexibly establish zram devices to use for log and tmp.
This also fixes issues which result from both armbian-zram-config and armbian-ramlog being hardcoded to use zram0
When using a zram device mounted and formatted as ext4 it should be mounted using
the "discard" option so that the actual allocated memory is freed and returned to
the system when files are deleted (as opposed to just flagging the delete in the
metadata, and leaving the underlying memory still allocated).
* Basic armbian services RFC
- tested building and upgrade
- armbian-optimize-hardware and armbian-setup-hardware have still the same content
* fix permissions
* Forther renaming and small fixes
* Odroid C2 NEXT tiny config adjustement to remove errros from bootup and moving u-boot to 2018.05
* More cleanings
* permissions fix
* More cleanup ...
* permi
* Remove few Ubuntu related things, fix permissions
* Further mini improvements
* Fix logrotate compression and permission issues
* Bugfix
* Wrong services setup at package install. fixing
* RAM logging: workaround for older kernel/btrfs driver versions
* Renaming services, proper config for zram, few bugfixes.
* Various fixes
* Various fixes
* No $TMPFILE needed here
* Various fixes
* Lower this so boards with low memory can use it too
* Various fixes
* Adjust logfile to armbian-hardware-monitor.log
* Remove swap file creation
* Fix permissions in all logrotate configs if needed.
* Prevent loading parallel printer port drivers which we don't need here.
