Merge pull request #5885 from szczepax/add_fstab_mount

FEAT: permanent mounting of PMem in ansible script

utils/ansible/configure-pmem.yml

@@ -29,11 +29,18 @@
  vars:
  newRegions: false
  testUser: pmdkuser
+ mountPoint: /mnt/pmem0
 
  tasks:
  - name: "Test if ndctl is installed"
  shell: which ndctl
 
+ - name: "Remove fstab entry if it exist"
+ ansible.posix.mount:
+ path: "{{ mountPoint }}"
+ state: absent_from_fstab
+ backup: true
+
  - name: "Unmount namespaces if they exist"
  shell: sudo umount /dev/pmem* || true
 
@@ -64,7 +71,6 @@
  #!/usr/bin/env bash
  DEV_DAX_R=0x0000
  FS_DAX_R=0x0001
- MOUNT_POINT="/mnt/pmem0"
 
  function check_alignment() {
  local size=$1
@@ -118,13 +124,13 @@
 
  pmem_name=$(create_fsdax)
 
- if [ ! -d "${MOUNT_POINT}" ]; then
- sudo mkdir ${MOUNT_POINT}
+ if [ ! -d "{{ mountPoint }}" ]; then
+ sudo mkdir {{ mountPoint }}
  fi
 
  sudo mkfs.ext4 -F /dev/${pmem_name}
- sudo mount -o dax /dev/${pmem_name} ${MOUNT_POINT}
- sudo chown -R {{ testUser }} ${MOUNT_POINT}
+ sudo mount -o dax=always /dev/${pmem_name} {{ mountPoint }}
+ sudo chown -R {{ testUser }} {{ mountPoint }}
 
  sudo chmod 777 /dev/dax* || true
  sudo chmod a+rw /sys/bus/nd/devices/region*/deep_flush
@@ -133,3 +139,17 @@
  register: script
 
  - debug: var=script
+
+ - name: "Get PMEM device name for {{ mountPoint }} mount point"
+ shell: |
+ mount | sed -nr "s/^.*(\/dev\/\S+) on \/mnt\/pmem0.*$/\1/p"
+ register: pmem_name
+
+ - name: "Add /etc/fstab entry for PMEM"
+ ansible.posix.mount:
+ path: "{{ mountPoint }}"
+ src: "{{ pmem_name.stdout }}"
+ fstype: ext4
+ opts: rw,relatime,dax=always
+ state: present
+ backup: true