feature:TSG-17006:limit traffic-engine logs storage space.

ansible/roles/tsg-os-HAL/files/script/tsg-os-HAL.sh

@@ -24,6 +24,8 @@ MRZCPD_POLL_WAIT_THROTTLE=512
 MRZCPD_SZ_DATA=4096
 MRZCPD_SZ_TUNNEL=8192
 MRZCPD_CHECK_BUFFER_LEAK=1
+TRAFFIC_ENGINE_LOGS_VDISK_PATH="/data/vdisks"
+TRAFFIC_ENGINE_LOGS_VDISK_SIZE_BYTES=
 
 load_tsg_os_HAL_config()
 {
@@ -168,10 +170,61 @@ set_grub_cmdline()
     fi
 }
 
+build_and_mount_traffic_engine_logs_vdisk()
+{
+    local vdisk_path=${TRAFFIC_ENGINE_LOGS_VDISK_PATH}
+    local vdisk_file="vdisk-traffic-engine-logs.ext4"
+    local vdisk_size=${TRAFFIC_ENGINE_LOGS_VDISK_SIZE_BYTES}
+    local mount_path="/var/log/traffic-engine"
+    local present_vdisk_size=0
+    local is_new_vdisk=0
+    local loop_device=
+
+    mkdir -p ${vdisk_path}
+    mkdir -p ${mount_path}
+
+    #Read /dev/sda5 size and get vdisk_size.
+    if [ ! -n "${vdisk_size}" ]; then
+        dev_sda5_size=`lsblk -b -o SIZE /dev/sda5 | sed -n 2p | tr -d ' '`
+        vdisk_size=$((dev_sda5_size/2))
+    fi
+
+    #Read present vdisk size.
+    if [ -e "${vdisk_path}/${vdisk_file}" ]; then
+        present_vdisk_size=`stat -c "%s" ${vdisk_path}/${vdisk_file}`
+    fi
+
+    #Create volume file.
+    if [ ! -e "${vdisk_path}/${vdisk_file}" ]; then
+        dd of=${vdisk_path}/${vdisk_file} bs=${vdisk_size} seek=1 count=0
+        mkfs -t ext4 ${vdisk_path}/${vdisk_file}
+        is_new_vdisk=1
+    elif [ ${vdisk_size} -gt ${present_vdisk_size} ]; then
+        dd of=${vdisk_path}/${vdisk_file} bs=${vdisk_size} seek=1 count=0 oflag=append
+    fi
+
+    #mount volume on /var/log/traffic-engine or resize loop device
+    #condition 1: ${mount_path} not mounted.                      action: mount
+    #condition 2: ${mount_path} mounted and need mount new vdisk. action: umount and mount new disk.
+    #condition 3: ${mount_path} mounted and vdisk size changed.   action: resize loop device.
+    loop_device=`df | grep ${mount_path} | awk '{print $1}'`
+    if [ -z ${loop_device} ]; then
+        mount -o loop,rw ${vdisk_path}/${vdisk_file} ${mount_path}
+    elif [ ${is_new_vdisk} -eq 1 ]; then
+        umount ${mount_path}
+        mount -o loop,rw ${vdisk_path}/${vdisk_file} ${mount_path}
+    elif [ ${vdisk_size} -gt ${present_vdisk_size} ]; then
+        losetup -c ${loop_device}
+        resize2fs  ${loop_device}
+    fi
+}
+
+
 load_tsg_os_HAL_config
 mkdir -p /run/mrzcpd/hugepages
 mkdir -p /var/run/share
 
+build_and_mount_traffic_engine_logs_vdisk
 set_hugepages
 set_cpu_list
 set_grub_cmdline

ansible/roles/tsg-os-HAL/tasks/main.yml

@@ -56,3 +56,9 @@
   with_items:
     - tsg-os-HAL.conf
   when: runtime_env == 'TSG-X-P0906'
+
+- name: "enable fstrim.timer"
+  systemd:
+    name: fstrim.timer
+    enabled: yes
+  when: runtime_env == 'TSG-X-P0906'