Manual changes made on `cephfs pools` are reverting back after stack update

Issue

• Changes made on cephfs pools manually by executing ceph commands are reverting back while performing stack update

  Note : In this document we are taking pg_autoscale mode of cephfs pools as an example.

• Let the names of cephfs pools be cephfs_data and cephfs_metadata

• Manually set the pg_autoscale mode of cephfs pools to true using below command

  # ceph osd pool set  cephfs_data  pg_autoscale_mode on
  # ceph osd pool set  cephfs_metadata  pg_autoscale_mode on
  

• The pg_autoscale_mode of cephfs pools set to on after executing above commands. The output will look like below,

  root@server1 ~]# ceph osd pool autoscale-status | grep cephfs
  POOL                  SIZE TARGET SIZE RATE RAW CAPACITY  RATIO TARGET RATIO EFFECTIVE RATIO BIAS PG_NUM NEW 
  PG_NUM AUTOSCALE
  
  cephfs_data          4590G              2.0       119.2T 0.0752                               1.0    512            
  on
  cephfs_metadata      9082M              2.0       119.2T 0.0001                               4.0     16            
  on
  

• On stack update, ceph changes made got reverted back to off

  [root@server1 ~]# ceph osd pool autoscale-status | grep cephfs
  POOL                  SIZE TARGET SIZE RATE RAW CAPACITY  RATIO TARGET RATIO EFFECTIVE RATIO BIAS PG_NUM NEW 
  PG_NUM AUTOSCALE
  
  cephfs_data          4590G              2.0       119.2T 0.0752                               1.0    512            
  off
  cephfs_metadata      9082M              2.0       119.2T 0.0001                               4.0     16            
  off