Switch logic. logrotate is active at /var/log.hdd if we use it. Compression happens only there. Truncate script (if /var/log is over 75%) saves logs, run logrotate on log.hdd and truncate logs. ZRAM partition was switched back to EXT4 since there are many troubles with older kernels. Image size was reduced due to lack of swap creation.

lib/debootstrap-ng.sh

@@ -344,13 +344,12 @@ prepare_partitions()
 				local sdsize=$(bc -l <<< "scale=0; (($imagesize * 0.8) / 4 + 1) * 4")
 				;;
 			*)
-				# Hardcoded overhead +40% and +128MB for ext4 is needed for desktop images,
-				# for CLI it could be lower. Also add extra 128 MiB for the emergency swap
-				# file creation and align the size up to 4MiB
+				# Hardcoded overhead +25% is needed for desktop images,
+				# for CLI it could be lower. Align the size up to 4MiB
 				if [[ $BUILD_DESKTOP == yes ]]; then
-					local sdsize=$(bc -l <<< "scale=0; ((($imagesize * 1.4) / 1 + 128) / 4 + 1) * 4")
+					local sdsize=$(bc -l <<< "scale=0; ((($imagesize * 1.25) / 1 + 0) / 4 + 1) * 4")
 				else
-					local sdsize=$(bc -l <<< "scale=0; ((($imagesize * 1.2) / 1 + 128) / 4 + 1) * 4")
+					local sdsize=$(bc -l <<< "scale=0; ((($imagesize * 1.15) / 1 + 0) / 4 + 1) * 4")
 				fi
 				;;
 		esac

packages/bsp/common/etc/default/armbian-zram-config.dpkg-dist

@@ -4,5 +4,4 @@
 ENABLED=true
 #
 # size of the partition for ramlog in megabytes
-# 50 is minimum allowed size for BTRFS partition
 SIZE=50

packages/bsp/common/usr/lib/armbian/armbian-hardware-optimization

@@ -41,22 +41,19 @@ set_io_scheduler() {
 
 prepare_board() {
 
-	# prevent logrotate from compressing rotated logs when /var/log lives on compressed fs
 	CheckDevice=$(for i in /var/log /var / ; do findmnt -n -o SOURCE $i && break ; done)
-	#[ -n "${CheckDevice}" ] && grep "^${CheckDevice}" /etc/mtab | grep -q compress && \
-	# need better implemenation, now fixed to our zram0
-	[[ "${CheckDevice}" == "/dev/zram0" ]] &&
-	for ConfigFile in /etc/logrotate.d/* ; do
-		sed -i -e "s/^\s\+compress/\t# compress/" \
-		-e "s/^\s\+delaycompress/\t# delaycompress/" "${ConfigFile}"
-	done
+	# adjust logrotate configs
+	if [[ "${CheckDevice}" == "/dev/zram0" || "${CheckDevice}" == "armbian-ramlog" ]]; then
+		for ConfigFile in /etc/logrotate.d/* ; do sed -i -e "s/log\//log.hdd\//" "${ConfigFile}"; done
+		sed -i "s/log\//log.hdd\//" /etc/logrotate.conf
+	else
+		for ConfigFile in /etc/logrotate.d/* ; do sed -i -e "s/log.hdd\//log\//" "${ConfigFile}"; done
+		sed -i "s/log.hdd\//log\//" /etc/logrotate.conf 
+	fi
 
-	# remove compression from general config
-	sed -i 's/^compress/#compress/' /etc/logrotate.conf
-
-	# fix permissions in all logrotate configs
-	find /etc/logrotate.d/. -type f | xargs grep -H -c 'su root' | grep 0$ | cut -d':' -f1 | \
-	xargs -L1 sed -i '/{/ a su root syslog' 2> /dev/null
+	# enable compression where not exists
+	find /etc/logrotate.d/. -type f | xargs grep -H -c 'compress' | grep 0$ | cut -d':' -f1 | xargs -L1 sed -i '/{/ a compress'
+	sed -i "s/#compress/compress/" /etc/logrotate.conf
 
 	# tweak ondemand cpufreq governor settings to increase cpufreq with IO load
 	grep -q ondemand /etc/default/cpufrequtils

packages/bsp/common/usr/lib/armbian/armbian-ramlog

@@ -55,12 +55,9 @@ case "$1" in
 	  mount --make-private $HDD_LOG
       rm -f $LOG2RAM_LOG
 	  # zram type
-      if [ "$(blkid -s TYPE /dev/zram0 | awk ' { print $2 } ' | grep btrfs)" ]; then
+      if [ "$(blkid -s TYPE /dev/zram0 | awk ' { print $2 } ' | grep ext4)" ]; then
 		mount /dev/zram0 $RAM_LOG | $LOG_OUTPUT
-		# workaround for older kernel/btrfs driver versions
-		if [ $? -eq 1 ]; then mkfs.btrfs -f -O ^extref -s 1024 -L armbian-ramlog /dev/zram0; mount /dev/zram0 $RAM_LOG | $LOG_OUTPUT; fi
       else
-
 		mount -t tmpfs -o nosuid,noexec,nodev,mode=0755,size=$SIZE armbian-ramlog $RAM_LOG | $LOG_OUTPUT
       fi
       syncFromDisk
@@ -79,4 +76,4 @@ case "$1" in
       echo "Usage: log2ram {start|stop|write}" >&2
       exit 1
       ;;
-esac
+esac

packages/bsp/common/usr/lib/armbian/armbian-truncate-logs

@@ -12,14 +12,15 @@
 treshold=75 # %
 logusage=$(df /var/log/ --output=pcent | tail -1 |cut -d "%" -f 1)
 if [ $logusage -ge $treshold ]; then
-
-		logrotate --force /etc/logrotate.d/
 		# write to SD
-		/usr/sbin/armbian/armbian-ram-logging write >/dev/null 2>&1
+                /usr/sbin/armbian/armbian-ramlog write >/dev/null 2>&1
+                # rotate logs on "disk"
+                chown root.root -R /var/log.hdd
+                logrotate --force /etc/logrotate.d/
 		# truncate
-        /usr/bin/find /var/log -name '*.log' -or -name '*.xz' -or -name 'lastlog' -or -name 'messages' -or -name 'debug' -or -name 'syslog' | xargs truncate --size 0
-		/usr/bin/find /var/log -name 'btmp' -or -name 'wtmp' | xargs truncate --size 0
+	        /usr/bin/find /var/log -name '*.log' -or -name '*.xz' -or -name 'lastlog' -or -name 'messages' -or -name 'debug' -or -name 'syslog' | xargs truncate --size 0
+		/usr/bin/find /var/log -name 'btmp' -or -name 'wtmp' -or -name 'faillog' | xargs truncate --size 0
 		# remove
-		/usr/bin/find /var/log -name '*.[0-9]' -or -name '*.gz' | xargs rm
+		/usr/bin/find /var/log -name '*.[0-9]' -or -name '*.gz' | xargs rm >/dev/null 2>&1
 
-fi
+fi

packages/bsp/common/usr/lib/armbian/armbian-zram-config

@@ -50,7 +50,7 @@ activate_zram() {
 		echo ${algo} >/sys/block/zram0/comp_algorithm 2>/dev/null
 	done
 	echo -n $(($SIZE*1024*1024)) > /sys/block/zram0/disksize
-	mkfs.btrfs -s 1024 -L log2ram /dev/zram0
+	mkfs.ext4 -O ^has_journal -s 1024 -L log2ram /dev/zram0
 	read algo </sys/block/zram0/comp_algorithm
 	echo -e "### Activated Armbian ramlog partition with ${algo} compression\n" >>${Log}
 } # activate_zram