Ceph pool migration

ceph_pool_migration.sh

#!/bin/bash

src_pool_name=data
dest_pool_name=data_temp

crush_ruleset=1
pg_count=64

touch pool_migration.log
> pool_migration.log

error(){
echo "Error: $1"
echo "----Error: $1 ----" >> pool_migration.log
}

echo "----Creating destination Pool----" >> pool_migration.log
ceph osd pool create $dest_pool_name $pg_count $pg_count >> pool_migration.log

echo "----setting crush ruleset for destination pool----" >> pool_migration.log
ceph osd pool set $dest_pool_name crush_ruleset $crush_ruleset >> pool_migration.log

echo "----Snapshotting source pool----" >> pool_migration.log
rados -p $src_pool_name mksnap $src_pool_name'-'`date +"%d-%m-%Y-%H-%M-%S"` >> pool_migration.log

echo "----Copying source pool to destination pool----" >> pool_migration.log
rados cppool $src_pool_name $dest_pool_name  >> pool_migration.log

if [ $? -eq 0 ]; then
  echo "----Renaming source pool----" >> pool_migration.log
  ceph osd pool rename $src_pool_name $src_pool_name'_backup'
  ceph osd pool rename $dest_pool_name $src_pool_name
  if [ ! $? -eq 0 ]; then
    message="Unable to rename, pool already exists"
    error "$message"
  else
    echo "Pool migration successfully completed"
    echo "----Pool migration successfully completed----" >> pool_migration.log
  fi
else
  message="Unable to copy $src_poo_name pool contents to $dest_poo_name"
  error "$message"
fi